/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-file-item-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 00:36:31,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 00:36:31,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 00:36:31,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 00:36:31,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 00:36:31,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 00:36:31,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 00:36:31,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 00:36:31,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 00:36:31,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 00:36:31,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 00:36:31,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 00:36:31,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 00:36:31,455 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 00:36:31,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 00:36:31,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 00:36:31,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 00:36:31,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 00:36:31,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 00:36:31,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 00:36:31,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 00:36:31,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 00:36:31,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 00:36:31,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 00:36:31,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-19 00:36:31,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 00:36:31,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 00:36:31,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 00:36:31,493 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-01-19 00:36:31,515 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 00:36:31,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 00:36:31,516 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 00:36:31,516 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 00:36:31,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 00:36:31,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 00:36:31,516 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 00:36:31,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 00:36:31,517 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 00:36:31,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 00:36:31,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 00:36:31,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 00:36:31,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 00:36:31,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 00:36:31,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 00:36:31,518 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 00:36:31,518 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 00:36:31,518 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 00:36:31,518 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 00:36:31,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 00:36:31,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 00:36:31,518 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 00:36:31,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 00:36:31,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 00:36:31,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 00:36:31,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 00:36:31,519 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 00:36:31,520 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 00:36:31,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 00:36:31,520 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 00:36:31,520 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 00:36:31,520 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 00:36:31,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 00:36:31,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 00:36:31,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 00:36:31,686 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 00:36:31,687 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 00:36:31,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-file-item-symm.wvr.c [2022-01-19 00:36:31,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9ae0ff7e/fa29e751334348108c70fa4cf7e29425/FLAG079014991 [2022-01-19 00:36:32,041 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 00:36:32,041 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-file-item-symm.wvr.c [2022-01-19 00:36:32,046 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9ae0ff7e/fa29e751334348108c70fa4cf7e29425/FLAG079014991 [2022-01-19 00:36:32,471 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9ae0ff7e/fa29e751334348108c70fa4cf7e29425 [2022-01-19 00:36:32,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 00:36:32,474 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 00:36:32,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 00:36:32,475 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 00:36:32,477 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 00:36:32,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 12:36:32" (1/1) ... [2022-01-19 00:36:32,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cd1ac83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:36:32, skipping insertion in model container [2022-01-19 00:36:32,478 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 12:36:32" (1/1) ... [2022-01-19 00:36:32,482 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 00:36:32,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 00:36:32,659 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-file-item-symm.wvr.c[2495,2508] [2022-01-19 00:36:32,669 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 00:36:32,675 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 00:36:32,704 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-file-item-symm.wvr.c[2495,2508] [2022-01-19 00:36:32,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 00:36:32,714 INFO L208 MainTranslator]: Completed translation [2022-01-19 00:36:32,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:36:32 WrapperNode [2022-01-19 00:36:32,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 00:36:32,716 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 00:36:32,717 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 00:36:32,717 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 00:36:32,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:36:32" (1/1) ... [2022-01-19 00:36:32,733 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:36:32" (1/1) ... [2022-01-19 00:36:32,757 INFO L137 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 158 [2022-01-19 00:36:32,757 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 00:36:32,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 00:36:32,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 00:36:32,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 00:36:32,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:36:32" (1/1) ... [2022-01-19 00:36:32,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:36:32" (1/1) ... [2022-01-19 00:36:32,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:36:32" (1/1) ... [2022-01-19 00:36:32,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:36:32" (1/1) ... [2022-01-19 00:36:32,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:36:32" (1/1) ... [2022-01-19 00:36:32,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:36:32" (1/1) ... [2022-01-19 00:36:32,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:36:32" (1/1) ... [2022-01-19 00:36:32,783 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 00:36:32,784 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 00:36:32,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 00:36:32,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 00:36:32,790 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:36:32" (1/1) ... [2022-01-19 00:36:32,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 00:36:32,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 00:36:32,812 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-19 00:36:32,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-19 00:36:32,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 00:36:32,847 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 00:36:32,847 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 00:36:32,847 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 00:36:32,847 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 00:36:32,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 00:36:32,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 00:36:32,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 00:36:32,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 00:36:32,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 00:36:32,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 00:36:32,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 00:36:32,848 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 00:36:32,933 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 00:36:32,934 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 00:36:33,124 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 00:36:33,130 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 00:36:33,130 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 00:36:33,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 12:36:33 BoogieIcfgContainer [2022-01-19 00:36:33,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 00:36:33,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 00:36:33,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 00:36:33,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 00:36:33,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 12:36:32" (1/3) ... [2022-01-19 00:36:33,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c656f9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 12:36:33, skipping insertion in model container [2022-01-19 00:36:33,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:36:32" (2/3) ... [2022-01-19 00:36:33,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c656f9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 12:36:33, skipping insertion in model container [2022-01-19 00:36:33,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 12:36:33" (3/3) ... [2022-01-19 00:36:33,137 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-file-item-symm.wvr.c [2022-01-19 00:36:33,140 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 00:36:33,140 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 00:36:33,140 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 00:36:33,173 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,173 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,173 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,173 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,173 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,173 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,174 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,174 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,174 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,174 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,174 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,174 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,174 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,174 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,175 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,175 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,175 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,175 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,175 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,175 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,176 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,176 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,176 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,176 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,176 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,176 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,176 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,176 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,176 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,176 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,176 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,177 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,177 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,177 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,177 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,177 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,177 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,177 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,177 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,177 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,177 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,178 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,178 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,178 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,178 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,178 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,178 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,178 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,178 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,178 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,178 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,178 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,178 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,179 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,179 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,179 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,179 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,179 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,179 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,179 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,179 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,179 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,179 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,179 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,180 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,180 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,180 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,180 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,180 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,180 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,180 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,180 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,181 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,181 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,181 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,181 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,181 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,181 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,181 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,181 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,181 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,182 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,182 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,182 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,182 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,182 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,182 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,182 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,182 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,183 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,183 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,183 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,183 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,183 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,183 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,183 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,183 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,183 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,184 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,184 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,184 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,184 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,184 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,184 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,184 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,184 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,185 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,185 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,185 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,185 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,185 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,185 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,185 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,185 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,186 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,186 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,186 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,186 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,187 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,187 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,187 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,187 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,188 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,188 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,188 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,188 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,188 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,188 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,188 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,188 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,188 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,189 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,189 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,189 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,189 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,189 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,189 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,190 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,190 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,190 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,190 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,190 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,190 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,190 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,190 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,190 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,190 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,191 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,191 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,191 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,191 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,191 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,191 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,191 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,191 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,191 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,191 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,191 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,192 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,192 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,192 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,192 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,192 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,192 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,192 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,192 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,192 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,192 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,192 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,193 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,193 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,193 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,193 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,193 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,193 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,193 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,193 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,193 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,193 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,193 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,193 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,194 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,194 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,194 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,194 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,194 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,194 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,194 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,195 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,195 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,195 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,195 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,195 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,195 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,195 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,195 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,196 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,196 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,196 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,196 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,196 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,196 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,196 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,196 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,196 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,196 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,197 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,197 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,197 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,197 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,197 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,197 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,198 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,198 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,198 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,198 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,198 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,198 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,198 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,198 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,198 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,198 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,199 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,199 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,199 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,199 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,199 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,199 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,199 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,199 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,200 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,200 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,200 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,200 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,200 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,200 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,202 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,203 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,203 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,203 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,203 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,203 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,203 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,203 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,203 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,203 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,203 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,203 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,204 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,204 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,204 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,204 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,205 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,205 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,205 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,206 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,206 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,206 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,206 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,206 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,206 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,206 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,206 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,206 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,206 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,206 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,206 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,206 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:36:33,209 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-19 00:36:33,237 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 00:36:33,242 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 00:36:33,243 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-19 00:36:33,252 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 198 places, 210 transitions, 436 flow [2022-01-19 00:36:33,298 INFO L129 PetriNetUnfolder]: 19/208 cut-off events. [2022-01-19 00:36:33,298 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 00:36:33,307 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 208 events. 19/208 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 414 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 131. Up to 2 conditions per place. [2022-01-19 00:36:33,307 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 210 transitions, 436 flow [2022-01-19 00:36:33,312 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 199 transitions, 410 flow [2022-01-19 00:36:33,338 INFO L129 PetriNetUnfolder]: 19/198 cut-off events. [2022-01-19 00:36:33,338 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 00:36:33,338 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:33,339 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:33,339 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:33,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:33,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1054999512, now seen corresponding path program 1 times [2022-01-19 00:36:33,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:33,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301917472] [2022-01-19 00:36:33,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:33,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:33,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:33,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:33,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301917472] [2022-01-19 00:36:33,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301917472] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:33,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:33,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:33,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569077546] [2022-01-19 00:36:33,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:33,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:33,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:33,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:33,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:33,800 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:33,807 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 199 transitions, 410 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:33,807 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:33,807 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:33,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:34,242 INFO L129 PetriNetUnfolder]: 113/576 cut-off events. [2022-01-19 00:36:34,242 INFO L130 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2022-01-19 00:36:34,246 INFO L84 FinitePrefix]: Finished finitePrefix Result has 861 conditions, 576 events. 113/576 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2995 event pairs, 35 based on Foata normal form. 23/565 useless extension candidates. Maximal degree in co-relation 655. Up to 123 conditions per place. [2022-01-19 00:36:34,251 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 81 selfloop transitions, 5 changer transitions 44/287 dead transitions. [2022-01-19 00:36:34,251 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 287 transitions, 876 flow [2022-01-19 00:36:34,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-19 00:36:34,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-01-19 00:36:34,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 4328 transitions. [2022-01-19 00:36:34,271 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8243809523809524 [2022-01-19 00:36:34,272 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 4328 transitions. [2022-01-19 00:36:34,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 4328 transitions. [2022-01-19 00:36:34,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:34,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 4328 transitions. [2022-01-19 00:36:34,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 173.12) internal successors, (4328), 25 states have internal predecessors, (4328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:34,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 210.0) internal successors, (5460), 26 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:34,306 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 210.0) internal successors, (5460), 26 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:34,307 INFO L186 Difference]: Start difference. First operand has 187 places, 199 transitions, 410 flow. Second operand 25 states and 4328 transitions. [2022-01-19 00:36:34,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 287 transitions, 876 flow [2022-01-19 00:36:34,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 287 transitions, 848 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 00:36:34,316 INFO L242 Difference]: Finished difference. Result has 229 places, 193 transitions, 473 flow [2022-01-19 00:36:34,317 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=473, PETRI_PLACES=229, PETRI_TRANSITIONS=193} [2022-01-19 00:36:34,320 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 42 predicate places. [2022-01-19 00:36:34,320 INFO L470 AbstractCegarLoop]: Abstraction has has 229 places, 193 transitions, 473 flow [2022-01-19 00:36:34,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:34,321 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:34,321 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:34,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 00:36:34,321 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:34,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:34,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1250873480, now seen corresponding path program 1 times [2022-01-19 00:36:34,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:34,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664521645] [2022-01-19 00:36:34,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:34,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:34,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:34,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:34,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664521645] [2022-01-19 00:36:34,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664521645] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:34,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:34,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 00:36:34,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266601514] [2022-01-19 00:36:34,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:34,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 00:36:34,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:34,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 00:36:34,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 00:36:34,360 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-01-19 00:36:34,361 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 193 transitions, 473 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:34,361 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:34,361 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-01-19 00:36:34,361 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:34,429 INFO L129 PetriNetUnfolder]: 67/631 cut-off events. [2022-01-19 00:36:34,429 INFO L130 PetriNetUnfolder]: For 623/632 co-relation queries the response was YES. [2022-01-19 00:36:34,432 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1081 conditions, 631 events. 67/631 cut-off events. For 623/632 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3791 event pairs, 20 based on Foata normal form. 0/575 useless extension candidates. Maximal degree in co-relation 1026. Up to 32 conditions per place. [2022-01-19 00:36:34,434 INFO L132 encePairwiseOnDemand]: 204/210 looper letters, 15 selfloop transitions, 3 changer transitions 0/199 dead transitions. [2022-01-19 00:36:34,434 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 199 transitions, 524 flow [2022-01-19 00:36:34,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 00:36:34,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 00:36:34,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-01-19 00:36:34,436 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-01-19 00:36:34,436 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-01-19 00:36:34,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-01-19 00:36:34,437 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:34,437 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-01-19 00:36:34,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:34,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:34,439 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:34,439 INFO L186 Difference]: Start difference. First operand has 229 places, 193 transitions, 473 flow. Second operand 3 states and 591 transitions. [2022-01-19 00:36:34,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 199 transitions, 524 flow [2022-01-19 00:36:34,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 199 transitions, 505 flow, removed 9 selfloop flow, removed 10 redundant places. [2022-01-19 00:36:34,447 INFO L242 Difference]: Finished difference. Result has 202 places, 196 transitions, 484 flow [2022-01-19 00:36:34,447 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=484, PETRI_PLACES=202, PETRI_TRANSITIONS=196} [2022-01-19 00:36:34,448 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 15 predicate places. [2022-01-19 00:36:34,448 INFO L470 AbstractCegarLoop]: Abstraction has has 202 places, 196 transitions, 484 flow [2022-01-19 00:36:34,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:34,448 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:34,448 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:34,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 00:36:34,449 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:34,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:34,449 INFO L85 PathProgramCache]: Analyzing trace with hash 728210236, now seen corresponding path program 2 times [2022-01-19 00:36:34,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:34,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200339441] [2022-01-19 00:36:34,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:34,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:34,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:34,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:34,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200339441] [2022-01-19 00:36:34,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200339441] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:34,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:34,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 00:36:34,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337632938] [2022-01-19 00:36:34,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:34,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 00:36:34,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:34,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 00:36:34,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 00:36:34,483 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-01-19 00:36:34,484 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 196 transitions, 484 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:34,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:34,484 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-01-19 00:36:34,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:34,556 INFO L129 PetriNetUnfolder]: 53/565 cut-off events. [2022-01-19 00:36:34,556 INFO L130 PetriNetUnfolder]: For 363/386 co-relation queries the response was YES. [2022-01-19 00:36:34,558 INFO L84 FinitePrefix]: Finished finitePrefix Result has 892 conditions, 565 events. 53/565 cut-off events. For 363/386 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2971 event pairs, 24 based on Foata normal form. 8/533 useless extension candidates. Maximal degree in co-relation 798. Up to 23 conditions per place. [2022-01-19 00:36:34,560 INFO L132 encePairwiseOnDemand]: 202/210 looper letters, 16 selfloop transitions, 5 changer transitions 0/202 dead transitions. [2022-01-19 00:36:34,560 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 202 transitions, 547 flow [2022-01-19 00:36:34,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 00:36:34,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 00:36:34,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-01-19 00:36:34,562 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-01-19 00:36:34,562 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-01-19 00:36:34,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-01-19 00:36:34,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:34,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-01-19 00:36:34,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:34,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:34,565 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:34,565 INFO L186 Difference]: Start difference. First operand has 202 places, 196 transitions, 484 flow. Second operand 3 states and 591 transitions. [2022-01-19 00:36:34,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 202 transitions, 547 flow [2022-01-19 00:36:34,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 202 transitions, 544 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 00:36:34,570 INFO L242 Difference]: Finished difference. Result has 205 places, 199 transitions, 525 flow [2022-01-19 00:36:34,570 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=525, PETRI_PLACES=205, PETRI_TRANSITIONS=199} [2022-01-19 00:36:34,570 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 18 predicate places. [2022-01-19 00:36:34,571 INFO L470 AbstractCegarLoop]: Abstraction has has 205 places, 199 transitions, 525 flow [2022-01-19 00:36:34,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:34,571 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:34,571 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:34,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 00:36:34,572 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:34,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:34,572 INFO L85 PathProgramCache]: Analyzing trace with hash 22916530, now seen corresponding path program 1 times [2022-01-19 00:36:34,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:34,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777706641] [2022-01-19 00:36:34,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:34,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:34,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:34,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:34,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777706641] [2022-01-19 00:36:34,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777706641] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:34,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:34,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:34,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570222107] [2022-01-19 00:36:34,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:34,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:34,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:34,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:34,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:34,720 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:34,721 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 199 transitions, 525 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:34,721 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:34,721 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:34,721 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:35,010 INFO L129 PetriNetUnfolder]: 190/1098 cut-off events. [2022-01-19 00:36:35,010 INFO L130 PetriNetUnfolder]: For 873/892 co-relation queries the response was YES. [2022-01-19 00:36:35,014 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2166 conditions, 1098 events. 190/1098 cut-off events. For 873/892 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7984 event pairs, 101 based on Foata normal form. 6/1041 useless extension candidates. Maximal degree in co-relation 2021. Up to 271 conditions per place. [2022-01-19 00:36:35,018 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 80 selfloop transitions, 5 changer transitions 34/283 dead transitions. [2022-01-19 00:36:35,018 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 283 transitions, 1078 flow [2022-01-19 00:36:35,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 00:36:35,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 00:36:35,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4125 transitions. [2022-01-19 00:36:35,025 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8184523809523809 [2022-01-19 00:36:35,025 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4125 transitions. [2022-01-19 00:36:35,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4125 transitions. [2022-01-19 00:36:35,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:35,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4125 transitions. [2022-01-19 00:36:35,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 171.875) internal successors, (4125), 24 states have internal predecessors, (4125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:35,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:35,039 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:35,039 INFO L186 Difference]: Start difference. First operand has 205 places, 199 transitions, 525 flow. Second operand 24 states and 4125 transitions. [2022-01-19 00:36:35,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 283 transitions, 1078 flow [2022-01-19 00:36:35,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 283 transitions, 1062 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-01-19 00:36:35,046 INFO L242 Difference]: Finished difference. Result has 248 places, 203 transitions, 608 flow [2022-01-19 00:36:35,047 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=608, PETRI_PLACES=248, PETRI_TRANSITIONS=203} [2022-01-19 00:36:35,047 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 61 predicate places. [2022-01-19 00:36:35,048 INFO L470 AbstractCegarLoop]: Abstraction has has 248 places, 203 transitions, 608 flow [2022-01-19 00:36:35,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:35,048 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:35,048 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:35,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 00:36:35,049 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:35,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:35,049 INFO L85 PathProgramCache]: Analyzing trace with hash 356652588, now seen corresponding path program 2 times [2022-01-19 00:36:35,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:35,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563554354] [2022-01-19 00:36:35,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:35,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:35,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:35,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:35,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:35,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563554354] [2022-01-19 00:36:35,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563554354] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:35,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:35,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:35,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665929513] [2022-01-19 00:36:35,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:35,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:35,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:35,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:35,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:35,145 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:35,146 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 203 transitions, 608 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:35,146 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:35,146 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:35,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:35,443 INFO L129 PetriNetUnfolder]: 197/1065 cut-off events. [2022-01-19 00:36:35,443 INFO L130 PetriNetUnfolder]: For 3326/3336 co-relation queries the response was YES. [2022-01-19 00:36:35,448 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3070 conditions, 1065 events. 197/1065 cut-off events. For 3326/3336 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7573 event pairs, 112 based on Foata normal form. 5/1005 useless extension candidates. Maximal degree in co-relation 2930. Up to 314 conditions per place. [2022-01-19 00:36:35,452 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 55 selfloop transitions, 12 changer transitions 25/256 dead transitions. [2022-01-19 00:36:35,452 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 256 transitions, 1253 flow [2022-01-19 00:36:35,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 00:36:35,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 00:36:35,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3430 transitions. [2022-01-19 00:36:35,457 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2022-01-19 00:36:35,457 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3430 transitions. [2022-01-19 00:36:35,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3430 transitions. [2022-01-19 00:36:35,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:35,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3430 transitions. [2022-01-19 00:36:35,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.5) internal successors, (3430), 20 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:35,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:35,470 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:35,470 INFO L186 Difference]: Start difference. First operand has 248 places, 203 transitions, 608 flow. Second operand 20 states and 3430 transitions. [2022-01-19 00:36:35,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 256 transitions, 1253 flow [2022-01-19 00:36:35,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 256 transitions, 1182 flow, removed 35 selfloop flow, removed 11 redundant places. [2022-01-19 00:36:35,483 INFO L242 Difference]: Finished difference. Result has 256 places, 213 transitions, 744 flow [2022-01-19 00:36:35,483 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=585, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=744, PETRI_PLACES=256, PETRI_TRANSITIONS=213} [2022-01-19 00:36:35,484 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 69 predicate places. [2022-01-19 00:36:35,484 INFO L470 AbstractCegarLoop]: Abstraction has has 256 places, 213 transitions, 744 flow [2022-01-19 00:36:35,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:35,485 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:35,485 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:35,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 00:36:35,485 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:35,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:35,485 INFO L85 PathProgramCache]: Analyzing trace with hash -33887738, now seen corresponding path program 1 times [2022-01-19 00:36:35,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:35,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350000142] [2022-01-19 00:36:35,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:35,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:35,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:35,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:35,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:35,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350000142] [2022-01-19 00:36:35,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350000142] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:35,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:35,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:35,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722680662] [2022-01-19 00:36:35,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:35,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:35,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:35,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:35,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:35,564 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:35,565 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 213 transitions, 744 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:35,565 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:35,565 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:35,565 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:35,944 INFO L129 PetriNetUnfolder]: 293/1475 cut-off events. [2022-01-19 00:36:35,944 INFO L130 PetriNetUnfolder]: For 6248/6270 co-relation queries the response was YES. [2022-01-19 00:36:35,953 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4659 conditions, 1475 events. 293/1475 cut-off events. For 6248/6270 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 11375 event pairs, 159 based on Foata normal form. 10/1401 useless extension candidates. Maximal degree in co-relation 4491. Up to 428 conditions per place. [2022-01-19 00:36:35,958 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 68 selfloop transitions, 13 changer transitions 36/287 dead transitions. [2022-01-19 00:36:35,958 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 287 transitions, 1685 flow [2022-01-19 00:36:35,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 00:36:35,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 00:36:35,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3612 transitions. [2022-01-19 00:36:35,965 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.819047619047619 [2022-01-19 00:36:35,965 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3612 transitions. [2022-01-19 00:36:35,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3612 transitions. [2022-01-19 00:36:35,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:35,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3612 transitions. [2022-01-19 00:36:35,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 172.0) internal successors, (3612), 21 states have internal predecessors, (3612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:35,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:35,989 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:35,989 INFO L186 Difference]: Start difference. First operand has 256 places, 213 transitions, 744 flow. Second operand 21 states and 3612 transitions. [2022-01-19 00:36:35,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 287 transitions, 1685 flow [2022-01-19 00:36:36,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 287 transitions, 1556 flow, removed 61 selfloop flow, removed 10 redundant places. [2022-01-19 00:36:36,014 INFO L242 Difference]: Finished difference. Result has 270 places, 226 transitions, 905 flow [2022-01-19 00:36:36,015 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=693, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=905, PETRI_PLACES=270, PETRI_TRANSITIONS=226} [2022-01-19 00:36:36,017 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 83 predicate places. [2022-01-19 00:36:36,017 INFO L470 AbstractCegarLoop]: Abstraction has has 270 places, 226 transitions, 905 flow [2022-01-19 00:36:36,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:36,018 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:36,018 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:36,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 00:36:36,018 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:36,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:36,019 INFO L85 PathProgramCache]: Analyzing trace with hash 395916068, now seen corresponding path program 2 times [2022-01-19 00:36:36,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:36,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121003796] [2022-01-19 00:36:36,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:36,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:36,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:36,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:36,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:36,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121003796] [2022-01-19 00:36:36,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121003796] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:36,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:36,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:36,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34749036] [2022-01-19 00:36:36,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:36,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:36,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:36,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:36,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:36,134 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:36,135 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 226 transitions, 905 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:36,135 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:36,135 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:36,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:36,446 INFO L129 PetriNetUnfolder]: 281/1413 cut-off events. [2022-01-19 00:36:36,446 INFO L130 PetriNetUnfolder]: For 8049/8079 co-relation queries the response was YES. [2022-01-19 00:36:36,455 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4996 conditions, 1413 events. 281/1413 cut-off events. For 8049/8079 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 10820 event pairs, 94 based on Foata normal form. 15/1364 useless extension candidates. Maximal degree in co-relation 4917. Up to 293 conditions per place. [2022-01-19 00:36:36,459 INFO L132 encePairwiseOnDemand]: 195/210 looper letters, 82 selfloop transitions, 25 changer transitions 50/327 dead transitions. [2022-01-19 00:36:36,460 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 327 transitions, 2063 flow [2022-01-19 00:36:36,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 00:36:36,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 00:36:36,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2794 transitions. [2022-01-19 00:36:36,464 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8315476190476191 [2022-01-19 00:36:36,464 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2794 transitions. [2022-01-19 00:36:36,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2794 transitions. [2022-01-19 00:36:36,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:36,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2794 transitions. [2022-01-19 00:36:36,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 174.625) internal successors, (2794), 16 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:36,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:36,472 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:36,472 INFO L186 Difference]: Start difference. First operand has 270 places, 226 transitions, 905 flow. Second operand 16 states and 2794 transitions. [2022-01-19 00:36:36,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 327 transitions, 2063 flow [2022-01-19 00:36:36,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 327 transitions, 1815 flow, removed 124 selfloop flow, removed 11 redundant places. [2022-01-19 00:36:36,493 INFO L242 Difference]: Finished difference. Result has 272 places, 236 transitions, 1049 flow [2022-01-19 00:36:36,493 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=805, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1049, PETRI_PLACES=272, PETRI_TRANSITIONS=236} [2022-01-19 00:36:36,494 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 85 predicate places. [2022-01-19 00:36:36,494 INFO L470 AbstractCegarLoop]: Abstraction has has 272 places, 236 transitions, 1049 flow [2022-01-19 00:36:36,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:36,495 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:36,495 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:36,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 00:36:36,495 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:36,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:36,496 INFO L85 PathProgramCache]: Analyzing trace with hash 2081702646, now seen corresponding path program 1 times [2022-01-19 00:36:36,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:36,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809670695] [2022-01-19 00:36:36,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:36,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:36,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:36,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:36,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809670695] [2022-01-19 00:36:36,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809670695] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:36,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:36,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 00:36:36,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68295147] [2022-01-19 00:36:36,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:36,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 00:36:36,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:36,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 00:36:36,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 00:36:36,516 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-01-19 00:36:36,517 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 236 transitions, 1049 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:36,517 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:36,517 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-01-19 00:36:36,517 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:36,678 INFO L129 PetriNetUnfolder]: 155/1472 cut-off events. [2022-01-19 00:36:36,678 INFO L130 PetriNetUnfolder]: For 5249/5285 co-relation queries the response was YES. [2022-01-19 00:36:36,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3840 conditions, 1472 events. 155/1472 cut-off events. For 5249/5285 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 12102 event pairs, 74 based on Foata normal form. 19/1399 useless extension candidates. Maximal degree in co-relation 3761. Up to 78 conditions per place. [2022-01-19 00:36:36,689 INFO L132 encePairwiseOnDemand]: 202/210 looper letters, 13 selfloop transitions, 5 changer transitions 0/242 dead transitions. [2022-01-19 00:36:36,689 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 242 transitions, 1100 flow [2022-01-19 00:36:36,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 00:36:36,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 00:36:36,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-01-19 00:36:36,690 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-01-19 00:36:36,690 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-01-19 00:36:36,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-01-19 00:36:36,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:36,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-01-19 00:36:36,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:36,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:36,693 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:36,693 INFO L186 Difference]: Start difference. First operand has 272 places, 236 transitions, 1049 flow. Second operand 3 states and 591 transitions. [2022-01-19 00:36:36,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 242 transitions, 1100 flow [2022-01-19 00:36:36,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 242 transitions, 972 flow, removed 64 selfloop flow, removed 9 redundant places. [2022-01-19 00:36:36,710 INFO L242 Difference]: Finished difference. Result has 256 places, 239 transitions, 959 flow [2022-01-19 00:36:36,710 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=921, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=959, PETRI_PLACES=256, PETRI_TRANSITIONS=239} [2022-01-19 00:36:36,713 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 69 predicate places. [2022-01-19 00:36:36,713 INFO L470 AbstractCegarLoop]: Abstraction has has 256 places, 239 transitions, 959 flow [2022-01-19 00:36:36,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:36,713 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:36,713 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:36,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 00:36:36,714 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:36,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:36,714 INFO L85 PathProgramCache]: Analyzing trace with hash -281237278, now seen corresponding path program 2 times [2022-01-19 00:36:36,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:36,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961395055] [2022-01-19 00:36:36,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:36,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:36,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:36,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:36,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:36,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961395055] [2022-01-19 00:36:36,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961395055] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:36,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:36,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 00:36:36,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013424131] [2022-01-19 00:36:36,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:36,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 00:36:36,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:36,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 00:36:36,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 00:36:36,755 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-01-19 00:36:36,756 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 239 transitions, 959 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:36,756 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:36,756 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-01-19 00:36:36,756 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:36,848 INFO L129 PetriNetUnfolder]: 90/1008 cut-off events. [2022-01-19 00:36:36,848 INFO L130 PetriNetUnfolder]: For 2439/2461 co-relation queries the response was YES. [2022-01-19 00:36:36,853 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2403 conditions, 1008 events. 90/1008 cut-off events. For 2439/2461 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7363 event pairs, 46 based on Foata normal form. 18/974 useless extension candidates. Maximal degree in co-relation 2113. Up to 52 conditions per place. [2022-01-19 00:36:36,856 INFO L132 encePairwiseOnDemand]: 204/210 looper letters, 17 selfloop transitions, 2 changer transitions 13/234 dead transitions. [2022-01-19 00:36:36,856 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 234 transitions, 950 flow [2022-01-19 00:36:36,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 00:36:36,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 00:36:36,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-01-19 00:36:36,857 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-01-19 00:36:36,857 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-01-19 00:36:36,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-01-19 00:36:36,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:36,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-01-19 00:36:36,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:36,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:36,860 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:36,860 INFO L186 Difference]: Start difference. First operand has 256 places, 239 transitions, 959 flow. Second operand 3 states and 591 transitions. [2022-01-19 00:36:36,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 234 transitions, 950 flow [2022-01-19 00:36:36,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 234 transitions, 922 flow, removed 7 selfloop flow, removed 6 redundant places. [2022-01-19 00:36:36,872 INFO L242 Difference]: Finished difference. Result has 252 places, 218 transitions, 804 flow [2022-01-19 00:36:36,872 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=859, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=804, PETRI_PLACES=252, PETRI_TRANSITIONS=218} [2022-01-19 00:36:36,873 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 65 predicate places. [2022-01-19 00:36:36,873 INFO L470 AbstractCegarLoop]: Abstraction has has 252 places, 218 transitions, 804 flow [2022-01-19 00:36:36,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:36,873 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:36,873 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:36,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 00:36:36,874 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:36,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:36,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1395240836, now seen corresponding path program 2 times [2022-01-19 00:36:36,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:36,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702623512] [2022-01-19 00:36:36,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:36,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:36,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:36,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:36,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:36,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702623512] [2022-01-19 00:36:36,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702623512] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:36,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:36,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:36,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122575084] [2022-01-19 00:36:36,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:36,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:36,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:36,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:36,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:36,969 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:36,969 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 218 transitions, 804 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:36,969 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:36,969 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:36,970 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:37,287 INFO L129 PetriNetUnfolder]: 155/1045 cut-off events. [2022-01-19 00:36:37,287 INFO L130 PetriNetUnfolder]: For 3335/3362 co-relation queries the response was YES. [2022-01-19 00:36:37,293 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2985 conditions, 1045 events. 155/1045 cut-off events. For 3335/3362 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 7490 event pairs, 69 based on Foata normal form. 10/1008 useless extension candidates. Maximal degree in co-relation 2264. Up to 246 conditions per place. [2022-01-19 00:36:37,296 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 81 selfloop transitions, 6 changer transitions 41/300 dead transitions. [2022-01-19 00:36:37,296 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 300 transitions, 1524 flow [2022-01-19 00:36:37,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 00:36:37,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 00:36:37,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4122 transitions. [2022-01-19 00:36:37,300 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8178571428571428 [2022-01-19 00:36:37,300 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4122 transitions. [2022-01-19 00:36:37,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4122 transitions. [2022-01-19 00:36:37,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:37,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4122 transitions. [2022-01-19 00:36:37,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 171.75) internal successors, (4122), 24 states have internal predecessors, (4122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:37,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:37,311 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:37,311 INFO L186 Difference]: Start difference. First operand has 252 places, 218 transitions, 804 flow. Second operand 24 states and 4122 transitions. [2022-01-19 00:36:37,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 300 transitions, 1524 flow [2022-01-19 00:36:37,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 300 transitions, 1478 flow, removed 22 selfloop flow, removed 6 redundant places. [2022-01-19 00:36:37,324 INFO L242 Difference]: Finished difference. Result has 284 places, 222 transitions, 898 flow [2022-01-19 00:36:37,325 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=774, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=898, PETRI_PLACES=284, PETRI_TRANSITIONS=222} [2022-01-19 00:36:37,325 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 97 predicate places. [2022-01-19 00:36:37,326 INFO L470 AbstractCegarLoop]: Abstraction has has 284 places, 222 transitions, 898 flow [2022-01-19 00:36:37,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:37,326 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:37,326 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:37,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 00:36:37,326 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:37,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:37,327 INFO L85 PathProgramCache]: Analyzing trace with hash 386763716, now seen corresponding path program 3 times [2022-01-19 00:36:37,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:37,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831512778] [2022-01-19 00:36:37,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:37,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:37,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:37,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:37,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:37,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831512778] [2022-01-19 00:36:37,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831512778] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:37,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:37,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:37,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459990828] [2022-01-19 00:36:37,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:37,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:37,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:37,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:37,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:37,436 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:37,437 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 222 transitions, 898 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:37,437 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:37,437 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:37,437 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:37,705 INFO L129 PetriNetUnfolder]: 160/1084 cut-off events. [2022-01-19 00:36:37,706 INFO L130 PetriNetUnfolder]: For 4946/4970 co-relation queries the response was YES. [2022-01-19 00:36:37,711 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3443 conditions, 1084 events. 160/1084 cut-off events. For 4946/4970 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7871 event pairs, 73 based on Foata normal form. 10/1039 useless extension candidates. Maximal degree in co-relation 3336. Up to 285 conditions per place. [2022-01-19 00:36:37,714 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 64 selfloop transitions, 16 changer transitions 25/277 dead transitions. [2022-01-19 00:36:37,714 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 277 transitions, 1685 flow [2022-01-19 00:36:37,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:36:37,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:36:37,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3091 transitions. [2022-01-19 00:36:37,717 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8177248677248677 [2022-01-19 00:36:37,717 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3091 transitions. [2022-01-19 00:36:37,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3091 transitions. [2022-01-19 00:36:37,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:37,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3091 transitions. [2022-01-19 00:36:37,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.72222222222223) internal successors, (3091), 18 states have internal predecessors, (3091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:37,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:37,728 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:37,728 INFO L186 Difference]: Start difference. First operand has 284 places, 222 transitions, 898 flow. Second operand 18 states and 3091 transitions. [2022-01-19 00:36:37,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 277 transitions, 1685 flow [2022-01-19 00:36:37,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 277 transitions, 1398 flow, removed 142 selfloop flow, removed 14 redundant places. [2022-01-19 00:36:37,744 INFO L242 Difference]: Finished difference. Result has 280 places, 236 transitions, 1023 flow [2022-01-19 00:36:37,744 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=835, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1023, PETRI_PLACES=280, PETRI_TRANSITIONS=236} [2022-01-19 00:36:37,745 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 93 predicate places. [2022-01-19 00:36:37,745 INFO L470 AbstractCegarLoop]: Abstraction has has 280 places, 236 transitions, 1023 flow [2022-01-19 00:36:37,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:37,746 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:37,747 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:37,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-19 00:36:37,747 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:37,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:37,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1471582416, now seen corresponding path program 4 times [2022-01-19 00:36:37,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:37,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705584946] [2022-01-19 00:36:37,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:37,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:37,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:37,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:37,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705584946] [2022-01-19 00:36:37,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705584946] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:37,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:37,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:37,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575386760] [2022-01-19 00:36:37,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:37,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:37,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:37,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:37,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:37,849 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:37,849 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 236 transitions, 1023 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:37,849 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:37,849 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:37,849 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:38,107 INFO L129 PetriNetUnfolder]: 166/1064 cut-off events. [2022-01-19 00:36:38,108 INFO L130 PetriNetUnfolder]: For 3669/3692 co-relation queries the response was YES. [2022-01-19 00:36:38,114 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3282 conditions, 1064 events. 166/1064 cut-off events. For 3669/3692 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 7626 event pairs, 73 based on Foata normal form. 9/1015 useless extension candidates. Maximal degree in co-relation 3177. Up to 276 conditions per place. [2022-01-19 00:36:38,117 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 66 selfloop transitions, 23 changer transitions 26/287 dead transitions. [2022-01-19 00:36:38,118 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 287 transitions, 1668 flow [2022-01-19 00:36:38,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 00:36:38,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 00:36:38,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2756 transitions. [2022-01-19 00:36:38,120 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8202380952380952 [2022-01-19 00:36:38,120 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2756 transitions. [2022-01-19 00:36:38,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2756 transitions. [2022-01-19 00:36:38,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:38,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2756 transitions. [2022-01-19 00:36:38,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 172.25) internal successors, (2756), 16 states have internal predecessors, (2756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:38,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:38,126 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:38,126 INFO L186 Difference]: Start difference. First operand has 280 places, 236 transitions, 1023 flow. Second operand 16 states and 2756 transitions. [2022-01-19 00:36:38,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 287 transitions, 1668 flow [2022-01-19 00:36:38,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 287 transitions, 1596 flow, removed 32 selfloop flow, removed 14 redundant places. [2022-01-19 00:36:38,142 INFO L242 Difference]: Finished difference. Result has 283 places, 246 transitions, 1163 flow [2022-01-19 00:36:38,142 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=975, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1163, PETRI_PLACES=283, PETRI_TRANSITIONS=246} [2022-01-19 00:36:38,142 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 96 predicate places. [2022-01-19 00:36:38,142 INFO L470 AbstractCegarLoop]: Abstraction has has 283 places, 246 transitions, 1163 flow [2022-01-19 00:36:38,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:38,143 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:38,143 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:38,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-19 00:36:38,143 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:38,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:38,143 INFO L85 PathProgramCache]: Analyzing trace with hash -2116593152, now seen corresponding path program 5 times [2022-01-19 00:36:38,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:38,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713436220] [2022-01-19 00:36:38,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:38,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:38,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:38,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:38,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:38,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713436220] [2022-01-19 00:36:38,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713436220] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:38,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:38,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:38,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821596526] [2022-01-19 00:36:38,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:38,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:38,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:38,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:38,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:38,219 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:38,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 246 transitions, 1163 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:38,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:38,220 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:38,220 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:38,504 INFO L129 PetriNetUnfolder]: 181/1158 cut-off events. [2022-01-19 00:36:38,505 INFO L130 PetriNetUnfolder]: For 3961/3984 co-relation queries the response was YES. [2022-01-19 00:36:38,512 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3648 conditions, 1158 events. 181/1158 cut-off events. For 3961/3984 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 8538 event pairs, 82 based on Foata normal form. 10/1111 useless extension candidates. Maximal degree in co-relation 3545. Up to 297 conditions per place. [2022-01-19 00:36:38,515 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 82 selfloop transitions, 23 changer transitions 29/306 dead transitions. [2022-01-19 00:36:38,515 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 306 transitions, 2081 flow [2022-01-19 00:36:38,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 00:36:38,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 00:36:38,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3431 transitions. [2022-01-19 00:36:38,518 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8169047619047619 [2022-01-19 00:36:38,518 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3431 transitions. [2022-01-19 00:36:38,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3431 transitions. [2022-01-19 00:36:38,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:38,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3431 transitions. [2022-01-19 00:36:38,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.55) internal successors, (3431), 20 states have internal predecessors, (3431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:38,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:38,526 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:38,526 INFO L186 Difference]: Start difference. First operand has 283 places, 246 transitions, 1163 flow. Second operand 20 states and 3431 transitions. [2022-01-19 00:36:38,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 306 transitions, 2081 flow [2022-01-19 00:36:38,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 306 transitions, 1961 flow, removed 37 selfloop flow, removed 8 redundant places. [2022-01-19 00:36:38,576 INFO L242 Difference]: Finished difference. Result has 304 places, 258 transitions, 1368 flow [2022-01-19 00:36:38,576 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1368, PETRI_PLACES=304, PETRI_TRANSITIONS=258} [2022-01-19 00:36:38,577 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 117 predicate places. [2022-01-19 00:36:38,577 INFO L470 AbstractCegarLoop]: Abstraction has has 304 places, 258 transitions, 1368 flow [2022-01-19 00:36:38,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:38,577 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:38,577 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:38,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-19 00:36:38,578 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:38,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:38,578 INFO L85 PathProgramCache]: Analyzing trace with hash -105746794, now seen corresponding path program 6 times [2022-01-19 00:36:38,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:38,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033868087] [2022-01-19 00:36:38,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:38,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:38,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:38,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:38,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033868087] [2022-01-19 00:36:38,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033868087] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:38,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:38,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:38,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065551207] [2022-01-19 00:36:38,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:38,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:38,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:38,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:38,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:38,667 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:38,668 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 258 transitions, 1368 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:38,668 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:38,668 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:38,668 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:38,968 INFO L129 PetriNetUnfolder]: 184/1172 cut-off events. [2022-01-19 00:36:38,968 INFO L130 PetriNetUnfolder]: For 4910/4938 co-relation queries the response was YES. [2022-01-19 00:36:38,976 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3935 conditions, 1172 events. 184/1172 cut-off events. For 4910/4938 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 8770 event pairs, 81 based on Foata normal form. 9/1124 useless extension candidates. Maximal degree in co-relation 3821. Up to 285 conditions per place. [2022-01-19 00:36:38,982 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 90 selfloop transitions, 22 changer transitions 33/317 dead transitions. [2022-01-19 00:36:38,982 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 317 transitions, 2379 flow [2022-01-19 00:36:38,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 00:36:38,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 00:36:38,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3436 transitions. [2022-01-19 00:36:38,985 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8180952380952381 [2022-01-19 00:36:38,985 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3436 transitions. [2022-01-19 00:36:38,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3436 transitions. [2022-01-19 00:36:38,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:38,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3436 transitions. [2022-01-19 00:36:38,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.8) internal successors, (3436), 20 states have internal predecessors, (3436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:38,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:38,992 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:38,992 INFO L186 Difference]: Start difference. First operand has 304 places, 258 transitions, 1368 flow. Second operand 20 states and 3436 transitions. [2022-01-19 00:36:38,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 317 transitions, 2379 flow [2022-01-19 00:36:39,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 302 places, 317 transitions, 2267 flow, removed 48 selfloop flow, removed 9 redundant places. [2022-01-19 00:36:39,014 INFO L242 Difference]: Finished difference. Result has 319 places, 269 transitions, 1602 flow [2022-01-19 00:36:39,014 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1318, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1602, PETRI_PLACES=319, PETRI_TRANSITIONS=269} [2022-01-19 00:36:39,015 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 132 predicate places. [2022-01-19 00:36:39,015 INFO L470 AbstractCegarLoop]: Abstraction has has 319 places, 269 transitions, 1602 flow [2022-01-19 00:36:39,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:39,016 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:39,016 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:39,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-19 00:36:39,016 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:39,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:39,016 INFO L85 PathProgramCache]: Analyzing trace with hash 889201550, now seen corresponding path program 7 times [2022-01-19 00:36:39,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:39,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390611181] [2022-01-19 00:36:39,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:39,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:39,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:39,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:39,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:39,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390611181] [2022-01-19 00:36:39,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390611181] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:39,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:39,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:39,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978346064] [2022-01-19 00:36:39,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:39,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:39,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:39,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:39,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:39,117 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:39,118 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 269 transitions, 1602 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:39,118 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:39,118 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:39,118 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:39,435 INFO L129 PetriNetUnfolder]: 185/1224 cut-off events. [2022-01-19 00:36:39,435 INFO L130 PetriNetUnfolder]: For 5689/5720 co-relation queries the response was YES. [2022-01-19 00:36:39,444 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4158 conditions, 1224 events. 185/1224 cut-off events. For 5689/5720 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 9376 event pairs, 80 based on Foata normal form. 14/1182 useless extension candidates. Maximal degree in co-relation 4035. Up to 306 conditions per place. [2022-01-19 00:36:39,452 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 86 selfloop transitions, 28 changer transitions 35/321 dead transitions. [2022-01-19 00:36:39,452 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 321 transitions, 2491 flow [2022-01-19 00:36:39,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 00:36:39,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 00:36:39,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3767 transitions. [2022-01-19 00:36:39,455 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8153679653679654 [2022-01-19 00:36:39,455 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3767 transitions. [2022-01-19 00:36:39,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3767 transitions. [2022-01-19 00:36:39,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:39,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3767 transitions. [2022-01-19 00:36:39,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 171.22727272727272) internal successors, (3767), 22 states have internal predecessors, (3767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:39,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:39,463 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:39,463 INFO L186 Difference]: Start difference. First operand has 319 places, 269 transitions, 1602 flow. Second operand 22 states and 3767 transitions. [2022-01-19 00:36:39,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 321 transitions, 2491 flow [2022-01-19 00:36:39,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 321 transitions, 2353 flow, removed 60 selfloop flow, removed 12 redundant places. [2022-01-19 00:36:39,490 INFO L242 Difference]: Finished difference. Result has 331 places, 273 transitions, 1677 flow [2022-01-19 00:36:39,491 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1505, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1677, PETRI_PLACES=331, PETRI_TRANSITIONS=273} [2022-01-19 00:36:39,491 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 144 predicate places. [2022-01-19 00:36:39,491 INFO L470 AbstractCegarLoop]: Abstraction has has 331 places, 273 transitions, 1677 flow [2022-01-19 00:36:39,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:39,492 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:39,492 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:39,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-19 00:36:39,493 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:39,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:39,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1277585082, now seen corresponding path program 8 times [2022-01-19 00:36:39,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:39,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208320484] [2022-01-19 00:36:39,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:39,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:39,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:39,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:39,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208320484] [2022-01-19 00:36:39,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208320484] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:39,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:39,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:39,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176210913] [2022-01-19 00:36:39,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:39,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:39,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:39,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:39,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:39,599 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:39,600 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 273 transitions, 1677 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:39,600 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:39,600 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:39,600 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:39,943 INFO L129 PetriNetUnfolder]: 180/1222 cut-off events. [2022-01-19 00:36:39,943 INFO L130 PetriNetUnfolder]: For 5544/5575 co-relation queries the response was YES. [2022-01-19 00:36:39,953 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4119 conditions, 1222 events. 180/1222 cut-off events. For 5544/5575 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 9402 event pairs, 79 based on Foata normal form. 12/1181 useless extension candidates. Maximal degree in co-relation 3992. Up to 298 conditions per place. [2022-01-19 00:36:39,956 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 92 selfloop transitions, 25 changer transitions 36/325 dead transitions. [2022-01-19 00:36:39,956 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 325 transitions, 2655 flow [2022-01-19 00:36:39,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 00:36:39,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 00:36:39,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3605 transitions. [2022-01-19 00:36:39,964 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8174603174603174 [2022-01-19 00:36:39,965 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3605 transitions. [2022-01-19 00:36:39,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3605 transitions. [2022-01-19 00:36:39,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:39,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3605 transitions. [2022-01-19 00:36:39,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.66666666666666) internal successors, (3605), 21 states have internal predecessors, (3605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:39,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:39,976 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:39,976 INFO L186 Difference]: Start difference. First operand has 331 places, 273 transitions, 1677 flow. Second operand 21 states and 3605 transitions. [2022-01-19 00:36:39,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 325 transitions, 2655 flow [2022-01-19 00:36:40,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 325 transitions, 2495 flow, removed 62 selfloop flow, removed 14 redundant places. [2022-01-19 00:36:40,006 INFO L242 Difference]: Finished difference. Result has 339 places, 278 transitions, 1799 flow [2022-01-19 00:36:40,007 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1597, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1799, PETRI_PLACES=339, PETRI_TRANSITIONS=278} [2022-01-19 00:36:40,007 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 152 predicate places. [2022-01-19 00:36:40,008 INFO L470 AbstractCegarLoop]: Abstraction has has 339 places, 278 transitions, 1799 flow [2022-01-19 00:36:40,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:40,009 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:40,009 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:40,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-19 00:36:40,009 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:40,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:40,009 INFO L85 PathProgramCache]: Analyzing trace with hash 588377888, now seen corresponding path program 9 times [2022-01-19 00:36:40,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:40,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924910085] [2022-01-19 00:36:40,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:40,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:40,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:40,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:40,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924910085] [2022-01-19 00:36:40,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924910085] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:40,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:40,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:40,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486664076] [2022-01-19 00:36:40,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:40,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:40,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:40,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:40,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:40,090 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:40,091 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 278 transitions, 1799 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:40,091 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:40,091 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:40,091 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:40,360 INFO L129 PetriNetUnfolder]: 162/1131 cut-off events. [2022-01-19 00:36:40,361 INFO L130 PetriNetUnfolder]: For 4992/5018 co-relation queries the response was YES. [2022-01-19 00:36:40,370 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3730 conditions, 1131 events. 162/1131 cut-off events. For 4992/5018 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 8442 event pairs, 76 based on Foata normal form. 13/1089 useless extension candidates. Maximal degree in co-relation 3599. Up to 296 conditions per place. [2022-01-19 00:36:40,373 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 81 selfloop transitions, 18 changer transitions 31/302 dead transitions. [2022-01-19 00:36:40,373 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 302 transitions, 2300 flow [2022-01-19 00:36:40,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 00:36:40,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 00:36:40,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2745 transitions. [2022-01-19 00:36:40,375 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8169642857142857 [2022-01-19 00:36:40,375 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2745 transitions. [2022-01-19 00:36:40,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2745 transitions. [2022-01-19 00:36:40,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:40,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2745 transitions. [2022-01-19 00:36:40,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 171.5625) internal successors, (2745), 16 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:40,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:40,390 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:40,390 INFO L186 Difference]: Start difference. First operand has 339 places, 278 transitions, 1799 flow. Second operand 16 states and 2745 transitions. [2022-01-19 00:36:40,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 302 transitions, 2300 flow [2022-01-19 00:36:40,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 302 transitions, 2146 flow, removed 52 selfloop flow, removed 18 redundant places. [2022-01-19 00:36:40,418 INFO L242 Difference]: Finished difference. Result has 328 places, 262 transitions, 1486 flow [2022-01-19 00:36:40,418 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1671, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1486, PETRI_PLACES=328, PETRI_TRANSITIONS=262} [2022-01-19 00:36:40,419 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 141 predicate places. [2022-01-19 00:36:40,419 INFO L470 AbstractCegarLoop]: Abstraction has has 328 places, 262 transitions, 1486 flow [2022-01-19 00:36:40,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:40,419 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:40,419 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:40,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-19 00:36:40,420 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:40,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:40,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1044741156, now seen corresponding path program 10 times [2022-01-19 00:36:40,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:40,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061798260] [2022-01-19 00:36:40,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:40,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:40,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:40,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:40,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061798260] [2022-01-19 00:36:40,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061798260] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:40,489 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:40,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:40,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433497334] [2022-01-19 00:36:40,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:40,490 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:40,490 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:40,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:40,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:40,491 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:40,492 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 262 transitions, 1486 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:40,492 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:40,492 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:40,492 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:40,784 INFO L129 PetriNetUnfolder]: 166/1162 cut-off events. [2022-01-19 00:36:40,785 INFO L130 PetriNetUnfolder]: For 4414/4438 co-relation queries the response was YES. [2022-01-19 00:36:40,790 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3747 conditions, 1162 events. 166/1162 cut-off events. For 4414/4438 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 8740 event pairs, 80 based on Foata normal form. 9/1117 useless extension candidates. Maximal degree in co-relation 3672. Up to 298 conditions per place. [2022-01-19 00:36:40,792 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 81 selfloop transitions, 25 changer transitions 28/306 dead transitions. [2022-01-19 00:36:40,792 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 306 transitions, 2268 flow [2022-01-19 00:36:40,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 00:36:40,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 00:36:40,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2925 transitions. [2022-01-19 00:36:40,802 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.819327731092437 [2022-01-19 00:36:40,802 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2925 transitions. [2022-01-19 00:36:40,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2925 transitions. [2022-01-19 00:36:40,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:40,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2925 transitions. [2022-01-19 00:36:40,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 172.05882352941177) internal successors, (2925), 17 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:40,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:40,808 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:40,808 INFO L186 Difference]: Start difference. First operand has 328 places, 262 transitions, 1486 flow. Second operand 17 states and 2925 transitions. [2022-01-19 00:36:40,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 306 transitions, 2268 flow [2022-01-19 00:36:40,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 306 transitions, 2147 flow, removed 17 selfloop flow, removed 12 redundant places. [2022-01-19 00:36:40,832 INFO L242 Difference]: Finished difference. Result has 321 places, 270 transitions, 1610 flow [2022-01-19 00:36:40,832 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1406, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1610, PETRI_PLACES=321, PETRI_TRANSITIONS=270} [2022-01-19 00:36:40,833 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 134 predicate places. [2022-01-19 00:36:40,833 INFO L470 AbstractCegarLoop]: Abstraction has has 321 places, 270 transitions, 1610 flow [2022-01-19 00:36:40,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:40,833 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:40,833 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:40,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-19 00:36:40,834 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:40,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:40,835 INFO L85 PathProgramCache]: Analyzing trace with hash 811606530, now seen corresponding path program 11 times [2022-01-19 00:36:40,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:40,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749654307] [2022-01-19 00:36:40,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:40,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:40,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:40,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:40,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:40,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749654307] [2022-01-19 00:36:40,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749654307] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:40,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:40,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:40,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039108702] [2022-01-19 00:36:40,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:40,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:40,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:40,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:40,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:40,919 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:40,920 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 270 transitions, 1610 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:40,920 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:40,920 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:40,920 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:41,204 INFO L129 PetriNetUnfolder]: 165/1151 cut-off events. [2022-01-19 00:36:41,204 INFO L130 PetriNetUnfolder]: For 4451/4480 co-relation queries the response was YES. [2022-01-19 00:36:41,213 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3757 conditions, 1151 events. 165/1151 cut-off events. For 4451/4480 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 8647 event pairs, 80 based on Foata normal form. 11/1106 useless extension candidates. Maximal degree in co-relation 3680. Up to 300 conditions per place. [2022-01-19 00:36:41,215 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 82 selfloop transitions, 27 changer transitions 28/309 dead transitions. [2022-01-19 00:36:41,215 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 309 transitions, 2388 flow [2022-01-19 00:36:41,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 00:36:41,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 00:36:41,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2923 transitions. [2022-01-19 00:36:41,218 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8187675070028011 [2022-01-19 00:36:41,218 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2923 transitions. [2022-01-19 00:36:41,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2923 transitions. [2022-01-19 00:36:41,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:41,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2923 transitions. [2022-01-19 00:36:41,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.94117647058823) internal successors, (2923), 17 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:41,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:41,223 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:41,223 INFO L186 Difference]: Start difference. First operand has 321 places, 270 transitions, 1610 flow. Second operand 17 states and 2923 transitions. [2022-01-19 00:36:41,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 309 transitions, 2388 flow [2022-01-19 00:36:41,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 309 transitions, 2286 flow, removed 25 selfloop flow, removed 9 redundant places. [2022-01-19 00:36:41,247 INFO L242 Difference]: Finished difference. Result has 329 places, 277 transitions, 1767 flow [2022-01-19 00:36:41,248 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1544, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1767, PETRI_PLACES=329, PETRI_TRANSITIONS=277} [2022-01-19 00:36:41,248 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 142 predicate places. [2022-01-19 00:36:41,248 INFO L470 AbstractCegarLoop]: Abstraction has has 329 places, 277 transitions, 1767 flow [2022-01-19 00:36:41,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:41,249 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:41,249 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:41,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-19 00:36:41,249 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:41,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:41,250 INFO L85 PathProgramCache]: Analyzing trace with hash -247791936, now seen corresponding path program 12 times [2022-01-19 00:36:41,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:41,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004430540] [2022-01-19 00:36:41,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:41,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:41,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:41,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:41,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004430540] [2022-01-19 00:36:41,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004430540] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:41,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:41,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:41,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982957498] [2022-01-19 00:36:41,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:41,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:41,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:41,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:41,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:41,334 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:41,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 277 transitions, 1767 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:41,334 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:41,335 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:41,335 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:41,618 INFO L129 PetriNetUnfolder]: 156/1130 cut-off events. [2022-01-19 00:36:41,618 INFO L130 PetriNetUnfolder]: For 4076/4105 co-relation queries the response was YES. [2022-01-19 00:36:41,626 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3585 conditions, 1130 events. 156/1130 cut-off events. For 4076/4105 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8444 event pairs, 78 based on Foata normal form. 11/1088 useless extension candidates. Maximal degree in co-relation 3505. Up to 292 conditions per place. [2022-01-19 00:36:41,629 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 79 selfloop transitions, 16 changer transitions 34/301 dead transitions. [2022-01-19 00:36:41,629 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 301 transitions, 2223 flow [2022-01-19 00:36:41,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:36:41,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:36:41,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3088 transitions. [2022-01-19 00:36:41,631 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.816931216931217 [2022-01-19 00:36:41,631 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3088 transitions. [2022-01-19 00:36:41,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3088 transitions. [2022-01-19 00:36:41,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:41,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3088 transitions. [2022-01-19 00:36:41,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.55555555555554) internal successors, (3088), 18 states have internal predecessors, (3088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:41,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:41,637 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:41,637 INFO L186 Difference]: Start difference. First operand has 329 places, 277 transitions, 1767 flow. Second operand 18 states and 3088 transitions. [2022-01-19 00:36:41,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 301 transitions, 2223 flow [2022-01-19 00:36:41,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 301 transitions, 2131 flow, removed 29 selfloop flow, removed 8 redundant places. [2022-01-19 00:36:41,660 INFO L242 Difference]: Finished difference. Result has 335 places, 263 transitions, 1501 flow [2022-01-19 00:36:41,660 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1683, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1501, PETRI_PLACES=335, PETRI_TRANSITIONS=263} [2022-01-19 00:36:41,661 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 148 predicate places. [2022-01-19 00:36:41,661 INFO L470 AbstractCegarLoop]: Abstraction has has 335 places, 263 transitions, 1501 flow [2022-01-19 00:36:41,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:41,661 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:41,661 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:41,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-19 00:36:41,661 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:41,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:41,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1057827110, now seen corresponding path program 13 times [2022-01-19 00:36:41,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:41,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981918139] [2022-01-19 00:36:41,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:41,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:41,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:41,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:41,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981918139] [2022-01-19 00:36:41,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981918139] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:41,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:41,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:41,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908451390] [2022-01-19 00:36:41,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:41,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:41,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:41,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:41,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:41,754 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:41,755 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 263 transitions, 1501 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:41,755 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:41,755 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:41,755 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:42,017 INFO L129 PetriNetUnfolder]: 143/1038 cut-off events. [2022-01-19 00:36:42,018 INFO L130 PetriNetUnfolder]: For 3529/3553 co-relation queries the response was YES. [2022-01-19 00:36:42,024 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3209 conditions, 1038 events. 143/1038 cut-off events. For 3529/3553 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7469 event pairs, 75 based on Foata normal form. 9/996 useless extension candidates. Maximal degree in co-relation 3130. Up to 281 conditions per place. [2022-01-19 00:36:42,026 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 69 selfloop transitions, 5 changer transitions 33/279 dead transitions. [2022-01-19 00:36:42,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 279 transitions, 1835 flow [2022-01-19 00:36:42,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:36:42,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:36:42,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3077 transitions. [2022-01-19 00:36:42,029 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.814021164021164 [2022-01-19 00:36:42,029 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3077 transitions. [2022-01-19 00:36:42,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3077 transitions. [2022-01-19 00:36:42,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:42,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3077 transitions. [2022-01-19 00:36:42,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 170.94444444444446) internal successors, (3077), 18 states have internal predecessors, (3077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:42,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:42,035 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:42,035 INFO L186 Difference]: Start difference. First operand has 335 places, 263 transitions, 1501 flow. Second operand 18 states and 3077 transitions. [2022-01-19 00:36:42,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 279 transitions, 1835 flow [2022-01-19 00:36:42,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 279 transitions, 1735 flow, removed 19 selfloop flow, removed 17 redundant places. [2022-01-19 00:36:42,054 INFO L242 Difference]: Finished difference. Result has 323 places, 243 transitions, 1166 flow [2022-01-19 00:36:42,054 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1413, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1166, PETRI_PLACES=323, PETRI_TRANSITIONS=243} [2022-01-19 00:36:42,055 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 136 predicate places. [2022-01-19 00:36:42,055 INFO L470 AbstractCegarLoop]: Abstraction has has 323 places, 243 transitions, 1166 flow [2022-01-19 00:36:42,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:42,055 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:42,055 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:42,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-19 00:36:42,055 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:42,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:42,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1617177460, now seen corresponding path program 14 times [2022-01-19 00:36:42,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:42,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393668920] [2022-01-19 00:36:42,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:42,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:42,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:42,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:42,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393668920] [2022-01-19 00:36:42,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393668920] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:42,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:42,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:42,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570442100] [2022-01-19 00:36:42,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:42,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:42,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:42,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:42,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:42,133 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:42,134 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 243 transitions, 1166 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:42,134 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:42,134 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:42,134 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:42,435 INFO L129 PetriNetUnfolder]: 146/1060 cut-off events. [2022-01-19 00:36:42,435 INFO L130 PetriNetUnfolder]: For 3335/3357 co-relation queries the response was YES. [2022-01-19 00:36:42,442 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3208 conditions, 1060 events. 146/1060 cut-off events. For 3335/3357 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 7772 event pairs, 71 based on Foata normal form. 9/1017 useless extension candidates. Maximal degree in co-relation 3134. Up to 259 conditions per place. [2022-01-19 00:36:42,445 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 63 selfloop transitions, 23 changer transitions 34/292 dead transitions. [2022-01-19 00:36:42,445 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 292 transitions, 1942 flow [2022-01-19 00:36:42,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 00:36:42,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 00:36:42,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3765 transitions. [2022-01-19 00:36:42,449 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.814935064935065 [2022-01-19 00:36:42,449 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3765 transitions. [2022-01-19 00:36:42,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3765 transitions. [2022-01-19 00:36:42,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:42,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3765 transitions. [2022-01-19 00:36:42,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 171.13636363636363) internal successors, (3765), 22 states have internal predecessors, (3765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:42,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:42,455 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:42,455 INFO L186 Difference]: Start difference. First operand has 323 places, 243 transitions, 1166 flow. Second operand 22 states and 3765 transitions. [2022-01-19 00:36:42,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 292 transitions, 1942 flow [2022-01-19 00:36:42,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 292 transitions, 1796 flow, removed 34 selfloop flow, removed 21 redundant places. [2022-01-19 00:36:42,473 INFO L242 Difference]: Finished difference. Result has 309 places, 248 transitions, 1240 flow [2022-01-19 00:36:42,473 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1092, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1240, PETRI_PLACES=309, PETRI_TRANSITIONS=248} [2022-01-19 00:36:42,473 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 122 predicate places. [2022-01-19 00:36:42,473 INFO L470 AbstractCegarLoop]: Abstraction has has 309 places, 248 transitions, 1240 flow [2022-01-19 00:36:42,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:42,474 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:42,474 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:42,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-19 00:36:42,474 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:42,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:42,474 INFO L85 PathProgramCache]: Analyzing trace with hash 428836932, now seen corresponding path program 15 times [2022-01-19 00:36:42,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:42,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99275655] [2022-01-19 00:36:42,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:42,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:42,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:42,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:42,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99275655] [2022-01-19 00:36:42,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99275655] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:42,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:42,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:42,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552977078] [2022-01-19 00:36:42,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:42,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:42,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:42,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:42,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:42,547 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:42,547 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 248 transitions, 1240 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:42,547 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:42,547 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:42,547 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:42,838 INFO L129 PetriNetUnfolder]: 148/1086 cut-off events. [2022-01-19 00:36:42,839 INFO L130 PetriNetUnfolder]: For 3621/3643 co-relation queries the response was YES. [2022-01-19 00:36:42,845 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3325 conditions, 1086 events. 148/1086 cut-off events. For 3621/3643 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8049 event pairs, 71 based on Foata normal form. 11/1047 useless extension candidates. Maximal degree in co-relation 3254. Up to 265 conditions per place. [2022-01-19 00:36:42,848 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 64 selfloop transitions, 27 changer transitions 27/290 dead transitions. [2022-01-19 00:36:42,848 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 290 transitions, 1954 flow [2022-01-19 00:36:42,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 00:36:42,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 00:36:42,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2920 transitions. [2022-01-19 00:36:42,863 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8179271708683473 [2022-01-19 00:36:42,863 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2920 transitions. [2022-01-19 00:36:42,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2920 transitions. [2022-01-19 00:36:42,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:42,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2920 transitions. [2022-01-19 00:36:42,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.76470588235293) internal successors, (2920), 17 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:42,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:42,871 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:42,872 INFO L186 Difference]: Start difference. First operand has 309 places, 248 transitions, 1240 flow. Second operand 17 states and 2920 transitions. [2022-01-19 00:36:42,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 290 transitions, 1954 flow [2022-01-19 00:36:42,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 290 transitions, 1866 flow, removed 31 selfloop flow, removed 13 redundant places. [2022-01-19 00:36:42,889 INFO L242 Difference]: Finished difference. Result has 308 places, 256 transitions, 1409 flow [2022-01-19 00:36:42,890 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1191, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1409, PETRI_PLACES=308, PETRI_TRANSITIONS=256} [2022-01-19 00:36:42,890 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 121 predicate places. [2022-01-19 00:36:42,890 INFO L470 AbstractCegarLoop]: Abstraction has has 308 places, 256 transitions, 1409 flow [2022-01-19 00:36:42,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:42,890 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:42,890 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:42,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-19 00:36:42,891 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:42,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:42,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1915196226, now seen corresponding path program 16 times [2022-01-19 00:36:42,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:42,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282926440] [2022-01-19 00:36:42,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:42,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:42,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:42,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:42,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282926440] [2022-01-19 00:36:42,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282926440] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:42,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:42,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:42,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563232806] [2022-01-19 00:36:42,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:42,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:42,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:42,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:42,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:42,962 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:42,963 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 256 transitions, 1409 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:42,963 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:42,963 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:42,963 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:43,222 INFO L129 PetriNetUnfolder]: 138/1037 cut-off events. [2022-01-19 00:36:43,222 INFO L130 PetriNetUnfolder]: For 3304/3326 co-relation queries the response was YES. [2022-01-19 00:36:43,227 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3131 conditions, 1037 events. 138/1037 cut-off events. For 3304/3326 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 7508 event pairs, 71 based on Foata normal form. 9/995 useless extension candidates. Maximal degree in co-relation 3061. Up to 260 conditions per place. [2022-01-19 00:36:43,228 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 61 selfloop transitions, 14 changer transitions 33/280 dead transitions. [2022-01-19 00:36:43,228 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 280 transitions, 1849 flow [2022-01-19 00:36:43,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:36:43,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:36:43,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3083 transitions. [2022-01-19 00:36:43,231 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8156084656084656 [2022-01-19 00:36:43,231 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3083 transitions. [2022-01-19 00:36:43,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3083 transitions. [2022-01-19 00:36:43,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:43,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3083 transitions. [2022-01-19 00:36:43,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.27777777777777) internal successors, (3083), 18 states have internal predecessors, (3083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:43,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:43,235 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:43,235 INFO L186 Difference]: Start difference. First operand has 308 places, 256 transitions, 1409 flow. Second operand 18 states and 3083 transitions. [2022-01-19 00:36:43,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 280 transitions, 1849 flow [2022-01-19 00:36:43,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 280 transitions, 1745 flow, removed 30 selfloop flow, removed 9 redundant places. [2022-01-19 00:36:43,251 INFO L242 Difference]: Finished difference. Result has 315 places, 241 transitions, 1164 flow [2022-01-19 00:36:43,251 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1324, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1164, PETRI_PLACES=315, PETRI_TRANSITIONS=241} [2022-01-19 00:36:43,252 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 128 predicate places. [2022-01-19 00:36:43,252 INFO L470 AbstractCegarLoop]: Abstraction has has 315 places, 241 transitions, 1164 flow [2022-01-19 00:36:43,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:43,252 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:43,252 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:43,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-19 00:36:43,252 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:43,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:43,253 INFO L85 PathProgramCache]: Analyzing trace with hash 2072010770, now seen corresponding path program 17 times [2022-01-19 00:36:43,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:43,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810863788] [2022-01-19 00:36:43,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:43,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:43,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:43,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:43,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810863788] [2022-01-19 00:36:43,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810863788] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:43,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:43,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:43,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534110018] [2022-01-19 00:36:43,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:43,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:43,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:43,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:43,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:43,333 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:43,333 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 241 transitions, 1164 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:43,333 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:43,333 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:43,334 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:43,634 INFO L129 PetriNetUnfolder]: 138/1033 cut-off events. [2022-01-19 00:36:43,634 INFO L130 PetriNetUnfolder]: For 3545/3565 co-relation queries the response was YES. [2022-01-19 00:36:43,640 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3112 conditions, 1033 events. 138/1033 cut-off events. For 3545/3565 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 7476 event pairs, 70 based on Foata normal form. 9/992 useless extension candidates. Maximal degree in co-relation 3041. Up to 251 conditions per place. [2022-01-19 00:36:43,642 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 57 selfloop transitions, 20 changer transitions 34/283 dead transitions. [2022-01-19 00:36:43,643 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 283 transitions, 1927 flow [2022-01-19 00:36:43,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 00:36:43,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 00:36:43,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3594 transitions. [2022-01-19 00:36:43,645 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8149659863945579 [2022-01-19 00:36:43,645 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3594 transitions. [2022-01-19 00:36:43,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3594 transitions. [2022-01-19 00:36:43,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:43,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3594 transitions. [2022-01-19 00:36:43,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.14285714285714) internal successors, (3594), 21 states have internal predecessors, (3594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:43,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:43,650 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:43,650 INFO L186 Difference]: Start difference. First operand has 315 places, 241 transitions, 1164 flow. Second operand 21 states and 3594 transitions. [2022-01-19 00:36:43,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 283 transitions, 1927 flow [2022-01-19 00:36:43,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 283 transitions, 1749 flow, removed 49 selfloop flow, removed 18 redundant places. [2022-01-19 00:36:43,666 INFO L242 Difference]: Finished difference. Result has 307 places, 244 transitions, 1229 flow [2022-01-19 00:36:43,666 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1229, PETRI_PLACES=307, PETRI_TRANSITIONS=244} [2022-01-19 00:36:43,666 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 120 predicate places. [2022-01-19 00:36:43,667 INFO L470 AbstractCegarLoop]: Abstraction has has 307 places, 244 transitions, 1229 flow [2022-01-19 00:36:43,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:43,667 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:43,667 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:43,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-19 00:36:43,667 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:43,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:43,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1943238090, now seen corresponding path program 18 times [2022-01-19 00:36:43,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:43,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910656822] [2022-01-19 00:36:43,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:43,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:43,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:43,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:43,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910656822] [2022-01-19 00:36:43,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910656822] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:43,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:43,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:43,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953970407] [2022-01-19 00:36:43,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:43,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:43,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:43,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:43,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:43,752 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:43,752 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 244 transitions, 1229 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:43,752 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:43,752 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:43,752 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:44,021 INFO L129 PetriNetUnfolder]: 133/999 cut-off events. [2022-01-19 00:36:44,022 INFO L130 PetriNetUnfolder]: For 3165/3185 co-relation queries the response was YES. [2022-01-19 00:36:44,028 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2984 conditions, 999 events. 133/999 cut-off events. For 3165/3185 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7102 event pairs, 71 based on Foata normal form. 9/957 useless extension candidates. Maximal degree in co-relation 2913. Up to 255 conditions per place. [2022-01-19 00:36:44,030 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 53 selfloop transitions, 21 changer transitions 30/276 dead transitions. [2022-01-19 00:36:44,030 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 276 transitions, 1809 flow [2022-01-19 00:36:44,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:36:44,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:36:44,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3087 transitions. [2022-01-19 00:36:44,049 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2022-01-19 00:36:44,049 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3087 transitions. [2022-01-19 00:36:44,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3087 transitions. [2022-01-19 00:36:44,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:44,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3087 transitions. [2022-01-19 00:36:44,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.5) internal successors, (3087), 18 states have internal predecessors, (3087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:44,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:44,054 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:44,054 INFO L186 Difference]: Start difference. First operand has 307 places, 244 transitions, 1229 flow. Second operand 18 states and 3087 transitions. [2022-01-19 00:36:44,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 276 transitions, 1809 flow [2022-01-19 00:36:44,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 276 transitions, 1692 flow, removed 44 selfloop flow, removed 14 redundant places. [2022-01-19 00:36:44,070 INFO L242 Difference]: Finished difference. Result has 302 places, 244 transitions, 1239 flow [2022-01-19 00:36:44,071 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1239, PETRI_PLACES=302, PETRI_TRANSITIONS=244} [2022-01-19 00:36:44,071 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 115 predicate places. [2022-01-19 00:36:44,071 INFO L470 AbstractCegarLoop]: Abstraction has has 302 places, 244 transitions, 1239 flow [2022-01-19 00:36:44,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:44,072 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:44,072 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:44,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-19 00:36:44,072 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:44,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:44,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1724336444, now seen corresponding path program 19 times [2022-01-19 00:36:44,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:44,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981861030] [2022-01-19 00:36:44,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:44,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:44,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:44,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:44,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:44,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981861030] [2022-01-19 00:36:44,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981861030] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:44,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:44,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:44,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903888505] [2022-01-19 00:36:44,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:44,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:44,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:44,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:44,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:44,158 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:44,158 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 244 transitions, 1239 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:44,159 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:44,159 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:44,159 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:44,396 INFO L129 PetriNetUnfolder]: 129/984 cut-off events. [2022-01-19 00:36:44,396 INFO L130 PetriNetUnfolder]: For 2820/2840 co-relation queries the response was YES. [2022-01-19 00:36:44,400 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2834 conditions, 984 events. 129/984 cut-off events. For 2820/2840 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6951 event pairs, 71 based on Foata normal form. 9/943 useless extension candidates. Maximal degree in co-relation 2769. Up to 254 conditions per place. [2022-01-19 00:36:44,401 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 51 selfloop transitions, 13 changer transitions 32/268 dead transitions. [2022-01-19 00:36:44,401 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 268 transitions, 1607 flow [2022-01-19 00:36:44,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:36:44,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:36:44,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3084 transitions. [2022-01-19 00:36:44,403 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8158730158730159 [2022-01-19 00:36:44,403 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3084 transitions. [2022-01-19 00:36:44,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3084 transitions. [2022-01-19 00:36:44,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:44,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3084 transitions. [2022-01-19 00:36:44,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.33333333333334) internal successors, (3084), 18 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:44,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:44,408 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:44,408 INFO L186 Difference]: Start difference. First operand has 302 places, 244 transitions, 1239 flow. Second operand 18 states and 3084 transitions. [2022-01-19 00:36:44,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 268 transitions, 1607 flow [2022-01-19 00:36:44,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 268 transitions, 1479 flow, removed 26 selfloop flow, removed 15 redundant places. [2022-01-19 00:36:44,420 INFO L242 Difference]: Finished difference. Result has 303 places, 235 transitions, 1062 flow [2022-01-19 00:36:44,421 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1062, PETRI_PLACES=303, PETRI_TRANSITIONS=235} [2022-01-19 00:36:44,421 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 116 predicate places. [2022-01-19 00:36:44,421 INFO L470 AbstractCegarLoop]: Abstraction has has 303 places, 235 transitions, 1062 flow [2022-01-19 00:36:44,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:44,421 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:44,421 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:44,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-19 00:36:44,422 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:44,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:44,422 INFO L85 PathProgramCache]: Analyzing trace with hash -577054250, now seen corresponding path program 20 times [2022-01-19 00:36:44,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:44,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958930032] [2022-01-19 00:36:44,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:44,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:44,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:44,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:44,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958930032] [2022-01-19 00:36:44,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958930032] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:44,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:44,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:44,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576724129] [2022-01-19 00:36:44,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:44,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:44,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:44,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:44,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:44,499 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:44,499 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 235 transitions, 1062 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:44,499 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:44,499 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:44,499 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:44,753 INFO L129 PetriNetUnfolder]: 116/882 cut-off events. [2022-01-19 00:36:44,753 INFO L130 PetriNetUnfolder]: For 2289/2309 co-relation queries the response was YES. [2022-01-19 00:36:44,758 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2461 conditions, 882 events. 116/882 cut-off events. For 2289/2309 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5971 event pairs, 68 based on Foata normal form. 9/843 useless extension candidates. Maximal degree in co-relation 2398. Up to 234 conditions per place. [2022-01-19 00:36:44,760 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 38 selfloop transitions, 0 changer transitions 44/248 dead transitions. [2022-01-19 00:36:44,760 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 248 transitions, 1258 flow [2022-01-19 00:36:44,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 00:36:44,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 00:36:44,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2905 transitions. [2022-01-19 00:36:44,762 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8137254901960784 [2022-01-19 00:36:44,762 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2905 transitions. [2022-01-19 00:36:44,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2905 transitions. [2022-01-19 00:36:44,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:44,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2905 transitions. [2022-01-19 00:36:44,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 170.88235294117646) internal successors, (2905), 17 states have internal predecessors, (2905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:44,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:44,766 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:44,766 INFO L186 Difference]: Start difference. First operand has 303 places, 235 transitions, 1062 flow. Second operand 17 states and 2905 transitions. [2022-01-19 00:36:44,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 248 transitions, 1258 flow [2022-01-19 00:36:44,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 248 transitions, 1171 flow, removed 17 selfloop flow, removed 18 redundant places. [2022-01-19 00:36:44,777 INFO L242 Difference]: Finished difference. Result has 287 places, 204 transitions, 701 flow [2022-01-19 00:36:44,777 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=981, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=701, PETRI_PLACES=287, PETRI_TRANSITIONS=204} [2022-01-19 00:36:44,779 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 100 predicate places. [2022-01-19 00:36:44,780 INFO L470 AbstractCegarLoop]: Abstraction has has 287 places, 204 transitions, 701 flow [2022-01-19 00:36:44,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:44,780 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:44,780 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:44,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-19 00:36:44,780 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:44,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:44,780 INFO L85 PathProgramCache]: Analyzing trace with hash 613911462, now seen corresponding path program 3 times [2022-01-19 00:36:44,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:44,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645165472] [2022-01-19 00:36:44,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:44,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:44,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:44,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:44,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645165472] [2022-01-19 00:36:44,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645165472] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:44,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:44,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:44,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836281683] [2022-01-19 00:36:44,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:44,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:44,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:44,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:44,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:44,849 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:44,850 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 204 transitions, 701 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:44,850 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:44,850 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:44,850 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:45,082 INFO L129 PetriNetUnfolder]: 122/857 cut-off events. [2022-01-19 00:36:45,082 INFO L130 PetriNetUnfolder]: For 2280/2288 co-relation queries the response was YES. [2022-01-19 00:36:45,086 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2344 conditions, 857 events. 122/857 cut-off events. For 2280/2288 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5766 event pairs, 50 based on Foata normal form. 1/814 useless extension candidates. Maximal degree in co-relation 2291. Up to 156 conditions per place. [2022-01-19 00:36:45,088 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 65 selfloop transitions, 15 changer transitions 29/265 dead transitions. [2022-01-19 00:36:45,088 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 265 transitions, 1517 flow [2022-01-19 00:36:45,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 00:36:45,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 00:36:45,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3430 transitions. [2022-01-19 00:36:45,093 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2022-01-19 00:36:45,093 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3430 transitions. [2022-01-19 00:36:45,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3430 transitions. [2022-01-19 00:36:45,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:45,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3430 transitions. [2022-01-19 00:36:45,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.5) internal successors, (3430), 20 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:45,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:45,098 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:45,098 INFO L186 Difference]: Start difference. First operand has 287 places, 204 transitions, 701 flow. Second operand 20 states and 3430 transitions. [2022-01-19 00:36:45,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 265 transitions, 1517 flow [2022-01-19 00:36:45,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 265 transitions, 1440 flow, removed 34 selfloop flow, removed 12 redundant places. [2022-01-19 00:36:45,106 INFO L242 Difference]: Finished difference. Result has 266 places, 216 transitions, 910 flow [2022-01-19 00:36:45,106 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=910, PETRI_PLACES=266, PETRI_TRANSITIONS=216} [2022-01-19 00:36:45,108 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 79 predicate places. [2022-01-19 00:36:45,108 INFO L470 AbstractCegarLoop]: Abstraction has has 266 places, 216 transitions, 910 flow [2022-01-19 00:36:45,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:45,108 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:45,109 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:45,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-19 00:36:45,109 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:45,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:45,109 INFO L85 PathProgramCache]: Analyzing trace with hash -749731324, now seen corresponding path program 4 times [2022-01-19 00:36:45,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:45,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598867455] [2022-01-19 00:36:45,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:45,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:45,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:45,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:45,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:45,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598867455] [2022-01-19 00:36:45,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598867455] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:45,188 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:45,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:45,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837027247] [2022-01-19 00:36:45,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:45,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:45,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:45,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:45,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:45,190 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:45,191 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 216 transitions, 910 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:45,191 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:45,191 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:45,191 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:45,495 INFO L129 PetriNetUnfolder]: 121/853 cut-off events. [2022-01-19 00:36:45,495 INFO L130 PetriNetUnfolder]: For 3579/3588 co-relation queries the response was YES. [2022-01-19 00:36:45,499 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2584 conditions, 853 events. 121/853 cut-off events. For 3579/3588 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5747 event pairs, 43 based on Foata normal form. 1/812 useless extension candidates. Maximal degree in co-relation 2525. Up to 114 conditions per place. [2022-01-19 00:36:45,501 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 83 selfloop transitions, 17 changer transitions 38/294 dead transitions. [2022-01-19 00:36:45,501 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 294 transitions, 2066 flow [2022-01-19 00:36:45,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 00:36:45,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 00:36:45,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4114 transitions. [2022-01-19 00:36:45,504 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8162698412698413 [2022-01-19 00:36:45,504 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4114 transitions. [2022-01-19 00:36:45,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4114 transitions. [2022-01-19 00:36:45,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:45,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4114 transitions. [2022-01-19 00:36:45,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 171.41666666666666) internal successors, (4114), 24 states have internal predecessors, (4114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:45,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:45,509 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:45,510 INFO L186 Difference]: Start difference. First operand has 266 places, 216 transitions, 910 flow. Second operand 24 states and 4114 transitions. [2022-01-19 00:36:45,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 294 transitions, 2066 flow [2022-01-19 00:36:45,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 294 transitions, 1782 flow, removed 142 selfloop flow, removed 8 redundant places. [2022-01-19 00:36:45,522 INFO L242 Difference]: Finished difference. Result has 289 places, 219 transitions, 959 flow [2022-01-19 00:36:45,522 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=814, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=959, PETRI_PLACES=289, PETRI_TRANSITIONS=219} [2022-01-19 00:36:45,522 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 102 predicate places. [2022-01-19 00:36:45,522 INFO L470 AbstractCegarLoop]: Abstraction has has 289 places, 219 transitions, 959 flow [2022-01-19 00:36:45,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:45,523 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:45,523 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:45,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-19 00:36:45,524 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:45,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:45,524 INFO L85 PathProgramCache]: Analyzing trace with hash 726672324, now seen corresponding path program 5 times [2022-01-19 00:36:45,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:45,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248065086] [2022-01-19 00:36:45,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:45,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:45,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:45,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:45,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:45,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248065086] [2022-01-19 00:36:45,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248065086] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:45,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:45,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:45,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970672949] [2022-01-19 00:36:45,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:45,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:45,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:45,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:45,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:45,599 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:45,600 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 219 transitions, 959 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:45,600 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:45,600 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:45,600 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:45,907 INFO L129 PetriNetUnfolder]: 131/932 cut-off events. [2022-01-19 00:36:45,907 INFO L130 PetriNetUnfolder]: For 4052/4059 co-relation queries the response was YES. [2022-01-19 00:36:45,912 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2892 conditions, 932 events. 131/932 cut-off events. For 4052/4059 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6578 event pairs, 46 based on Foata normal form. 4/895 useless extension candidates. Maximal degree in co-relation 2820. Up to 165 conditions per place. [2022-01-19 00:36:45,914 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 74 selfloop transitions, 24 changer transitions 30/284 dead transitions. [2022-01-19 00:36:45,914 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 284 transitions, 1964 flow [2022-01-19 00:36:45,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 00:36:45,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 00:36:45,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3766 transitions. [2022-01-19 00:36:45,917 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8151515151515152 [2022-01-19 00:36:45,917 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3766 transitions. [2022-01-19 00:36:45,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3766 transitions. [2022-01-19 00:36:45,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:45,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3766 transitions. [2022-01-19 00:36:45,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 171.1818181818182) internal successors, (3766), 22 states have internal predecessors, (3766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:45,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:45,922 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:45,922 INFO L186 Difference]: Start difference. First operand has 289 places, 219 transitions, 959 flow. Second operand 22 states and 3766 transitions. [2022-01-19 00:36:45,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 284 transitions, 1964 flow [2022-01-19 00:36:45,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 284 transitions, 1841 flow, removed 54 selfloop flow, removed 19 redundant places. [2022-01-19 00:36:45,936 INFO L242 Difference]: Finished difference. Result has 289 places, 231 transitions, 1150 flow [2022-01-19 00:36:45,936 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=897, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1150, PETRI_PLACES=289, PETRI_TRANSITIONS=231} [2022-01-19 00:36:45,937 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 102 predicate places. [2022-01-19 00:36:45,937 INFO L470 AbstractCegarLoop]: Abstraction has has 289 places, 231 transitions, 1150 flow [2022-01-19 00:36:45,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:45,937 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:45,937 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:45,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-19 00:36:45,937 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:45,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:45,938 INFO L85 PathProgramCache]: Analyzing trace with hash 323320088, now seen corresponding path program 6 times [2022-01-19 00:36:45,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:45,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780656276] [2022-01-19 00:36:45,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:45,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:46,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:46,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:46,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780656276] [2022-01-19 00:36:46,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780656276] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:46,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:46,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:46,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765016986] [2022-01-19 00:36:46,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:46,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:46,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:46,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:46,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:46,012 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:46,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 231 transitions, 1150 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:46,013 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:46,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:46,013 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:46,290 INFO L129 PetriNetUnfolder]: 128/911 cut-off events. [2022-01-19 00:36:46,291 INFO L130 PetriNetUnfolder]: For 3777/3794 co-relation queries the response was YES. [2022-01-19 00:36:46,295 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2855 conditions, 911 events. 128/911 cut-off events. For 3777/3794 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6383 event pairs, 48 based on Foata normal form. 5/874 useless extension candidates. Maximal degree in co-relation 2785. Up to 161 conditions per place. [2022-01-19 00:36:46,297 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 70 selfloop transitions, 24 changer transitions 31/281 dead transitions. [2022-01-19 00:36:46,297 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 281 transitions, 2044 flow [2022-01-19 00:36:46,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 00:36:46,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 00:36:46,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3601 transitions. [2022-01-19 00:36:46,299 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8165532879818594 [2022-01-19 00:36:46,299 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3601 transitions. [2022-01-19 00:36:46,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3601 transitions. [2022-01-19 00:36:46,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:46,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3601 transitions. [2022-01-19 00:36:46,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.47619047619048) internal successors, (3601), 21 states have internal predecessors, (3601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:46,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:46,304 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:46,304 INFO L186 Difference]: Start difference. First operand has 289 places, 231 transitions, 1150 flow. Second operand 21 states and 3601 transitions. [2022-01-19 00:36:46,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 281 transitions, 2044 flow [2022-01-19 00:36:46,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 281 transitions, 1908 flow, removed 61 selfloop flow, removed 14 redundant places. [2022-01-19 00:36:46,318 INFO L242 Difference]: Finished difference. Result has 297 places, 235 transitions, 1270 flow [2022-01-19 00:36:46,318 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1086, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1270, PETRI_PLACES=297, PETRI_TRANSITIONS=235} [2022-01-19 00:36:46,318 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 110 predicate places. [2022-01-19 00:36:46,319 INFO L470 AbstractCegarLoop]: Abstraction has has 297 places, 235 transitions, 1270 flow [2022-01-19 00:36:46,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:46,319 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:46,319 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:46,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-19 00:36:46,319 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:46,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:46,319 INFO L85 PathProgramCache]: Analyzing trace with hash 2004422760, now seen corresponding path program 7 times [2022-01-19 00:36:46,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:46,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086282039] [2022-01-19 00:36:46,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:46,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:46,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:46,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:46,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086282039] [2022-01-19 00:36:46,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086282039] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:46,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:46,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:46,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531906960] [2022-01-19 00:36:46,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:46,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:46,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:46,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:46,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:46,388 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:46,389 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 235 transitions, 1270 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:46,389 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:46,389 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:46,389 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:46,622 INFO L129 PetriNetUnfolder]: 120/860 cut-off events. [2022-01-19 00:36:46,622 INFO L130 PetriNetUnfolder]: For 3763/3775 co-relation queries the response was YES. [2022-01-19 00:36:46,626 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2715 conditions, 860 events. 120/860 cut-off events. For 3763/3775 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5790 event pairs, 41 based on Foata normal form. 6/828 useless extension candidates. Maximal degree in co-relation 2642. Up to 165 conditions per place. [2022-01-19 00:36:46,628 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 72 selfloop transitions, 27 changer transitions 25/280 dead transitions. [2022-01-19 00:36:46,628 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 280 transitions, 2105 flow [2022-01-19 00:36:46,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:36:46,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:36:46,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3086 transitions. [2022-01-19 00:36:46,637 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8164021164021164 [2022-01-19 00:36:46,637 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3086 transitions. [2022-01-19 00:36:46,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3086 transitions. [2022-01-19 00:36:46,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:46,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3086 transitions. [2022-01-19 00:36:46,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.44444444444446) internal successors, (3086), 18 states have internal predecessors, (3086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:46,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:46,641 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:46,641 INFO L186 Difference]: Start difference. First operand has 297 places, 235 transitions, 1270 flow. Second operand 18 states and 3086 transitions. [2022-01-19 00:36:46,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 280 transitions, 2105 flow [2022-01-19 00:36:46,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 280 transitions, 1921 flow, removed 67 selfloop flow, removed 14 redundant places. [2022-01-19 00:36:46,655 INFO L242 Difference]: Finished difference. Result has 296 places, 241 transitions, 1350 flow [2022-01-19 00:36:46,655 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1160, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1350, PETRI_PLACES=296, PETRI_TRANSITIONS=241} [2022-01-19 00:36:46,655 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 109 predicate places. [2022-01-19 00:36:46,655 INFO L470 AbstractCegarLoop]: Abstraction has has 296 places, 241 transitions, 1350 flow [2022-01-19 00:36:46,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:46,656 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:46,656 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:46,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-19 00:36:46,656 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:46,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:46,656 INFO L85 PathProgramCache]: Analyzing trace with hash 754246134, now seen corresponding path program 8 times [2022-01-19 00:36:46,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:46,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610118306] [2022-01-19 00:36:46,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:46,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:46,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:46,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:46,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610118306] [2022-01-19 00:36:46,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610118306] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:46,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:46,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:46,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691125362] [2022-01-19 00:36:46,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:46,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:46,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:46,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:46,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:46,733 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:46,734 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 241 transitions, 1350 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:46,734 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:46,734 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:46,734 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:46,956 INFO L129 PetriNetUnfolder]: 108/811 cut-off events. [2022-01-19 00:36:46,956 INFO L130 PetriNetUnfolder]: For 2993/3016 co-relation queries the response was YES. [2022-01-19 00:36:46,961 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2456 conditions, 811 events. 108/811 cut-off events. For 2993/3016 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5311 event pairs, 42 based on Foata normal form. 10/783 useless extension candidates. Maximal degree in co-relation 2386. Up to 156 conditions per place. [2022-01-19 00:36:46,962 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 66 selfloop transitions, 14 changer transitions 27/263 dead transitions. [2022-01-19 00:36:46,963 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 263 transitions, 1805 flow [2022-01-19 00:36:46,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 00:36:46,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 00:36:46,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2741 transitions. [2022-01-19 00:36:46,964 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8157738095238095 [2022-01-19 00:36:46,964 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2741 transitions. [2022-01-19 00:36:46,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2741 transitions. [2022-01-19 00:36:46,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:46,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2741 transitions. [2022-01-19 00:36:46,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 171.3125) internal successors, (2741), 16 states have internal predecessors, (2741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:46,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:46,968 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:46,968 INFO L186 Difference]: Start difference. First operand has 296 places, 241 transitions, 1350 flow. Second operand 16 states and 2741 transitions. [2022-01-19 00:36:46,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 263 transitions, 1805 flow [2022-01-19 00:36:46,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 263 transitions, 1680 flow, removed 44 selfloop flow, removed 11 redundant places. [2022-01-19 00:36:46,982 INFO L242 Difference]: Finished difference. Result has 296 places, 225 transitions, 1071 flow [2022-01-19 00:36:46,983 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1071, PETRI_PLACES=296, PETRI_TRANSITIONS=225} [2022-01-19 00:36:46,983 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 109 predicate places. [2022-01-19 00:36:46,983 INFO L470 AbstractCegarLoop]: Abstraction has has 296 places, 225 transitions, 1071 flow [2022-01-19 00:36:46,983 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:46,983 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:46,983 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:46,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-19 00:36:46,984 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:46,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:46,984 INFO L85 PathProgramCache]: Analyzing trace with hash 260612428, now seen corresponding path program 9 times [2022-01-19 00:36:46,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:46,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594894463] [2022-01-19 00:36:46,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:46,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:47,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:47,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:47,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594894463] [2022-01-19 00:36:47,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594894463] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:47,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:47,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:47,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668237625] [2022-01-19 00:36:47,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:47,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:47,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:47,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:47,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:47,059 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:47,060 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 225 transitions, 1071 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:47,060 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:47,060 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:47,060 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:47,261 INFO L129 PetriNetUnfolder]: 113/835 cut-off events. [2022-01-19 00:36:47,261 INFO L130 PetriNetUnfolder]: For 3036/3052 co-relation queries the response was YES. [2022-01-19 00:36:47,265 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2498 conditions, 835 events. 113/835 cut-off events. For 3036/3052 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5550 event pairs, 44 based on Foata normal form. 4/799 useless extension candidates. Maximal degree in co-relation 2432. Up to 158 conditions per place. [2022-01-19 00:36:47,266 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 63 selfloop transitions, 23 changer transitions 24/266 dead transitions. [2022-01-19 00:36:47,267 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 266 transitions, 1809 flow [2022-01-19 00:36:47,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 00:36:47,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 00:36:47,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2921 transitions. [2022-01-19 00:36:47,268 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8182072829131652 [2022-01-19 00:36:47,268 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2921 transitions. [2022-01-19 00:36:47,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2921 transitions. [2022-01-19 00:36:47,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:47,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2921 transitions. [2022-01-19 00:36:47,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.8235294117647) internal successors, (2921), 17 states have internal predecessors, (2921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:47,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:47,272 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:47,272 INFO L186 Difference]: Start difference. First operand has 296 places, 225 transitions, 1071 flow. Second operand 17 states and 2921 transitions. [2022-01-19 00:36:47,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 266 transitions, 1809 flow [2022-01-19 00:36:47,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 266 transitions, 1700 flow, removed 17 selfloop flow, removed 14 redundant places. [2022-01-19 00:36:47,283 INFO L242 Difference]: Finished difference. Result has 287 places, 233 transitions, 1223 flow [2022-01-19 00:36:47,283 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1009, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1223, PETRI_PLACES=287, PETRI_TRANSITIONS=233} [2022-01-19 00:36:47,284 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 100 predicate places. [2022-01-19 00:36:47,284 INFO L470 AbstractCegarLoop]: Abstraction has has 287 places, 233 transitions, 1223 flow [2022-01-19 00:36:47,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:47,284 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:47,284 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:47,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-19 00:36:47,284 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:47,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:47,285 INFO L85 PathProgramCache]: Analyzing trace with hash -695288172, now seen corresponding path program 10 times [2022-01-19 00:36:47,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:47,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715558948] [2022-01-19 00:36:47,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:47,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:47,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:47,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:47,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:47,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715558948] [2022-01-19 00:36:47,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715558948] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:47,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:47,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:47,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995314500] [2022-01-19 00:36:47,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:47,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:47,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:47,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:47,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:47,352 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:47,352 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 233 transitions, 1223 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:47,352 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:47,352 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:47,353 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:47,578 INFO L129 PetriNetUnfolder]: 114/816 cut-off events. [2022-01-19 00:36:47,579 INFO L130 PetriNetUnfolder]: For 2994/3010 co-relation queries the response was YES. [2022-01-19 00:36:47,583 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2515 conditions, 816 events. 114/816 cut-off events. For 2994/3010 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5336 event pairs, 46 based on Foata normal form. 4/779 useless extension candidates. Maximal degree in co-relation 2449. Up to 161 conditions per place. [2022-01-19 00:36:47,584 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 64 selfloop transitions, 25 changer transitions 24/269 dead transitions. [2022-01-19 00:36:47,584 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 269 transitions, 1939 flow [2022-01-19 00:36:47,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 00:36:47,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 00:36:47,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2919 transitions. [2022-01-19 00:36:47,587 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8176470588235294 [2022-01-19 00:36:47,587 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2919 transitions. [2022-01-19 00:36:47,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2919 transitions. [2022-01-19 00:36:47,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:47,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2919 transitions. [2022-01-19 00:36:47,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.7058823529412) internal successors, (2919), 17 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:47,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:47,590 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:47,590 INFO L186 Difference]: Start difference. First operand has 287 places, 233 transitions, 1223 flow. Second operand 17 states and 2919 transitions. [2022-01-19 00:36:47,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 269 transitions, 1939 flow [2022-01-19 00:36:47,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 269 transitions, 1819 flow, removed 36 selfloop flow, removed 9 redundant places. [2022-01-19 00:36:47,603 INFO L242 Difference]: Finished difference. Result has 295 places, 240 transitions, 1341 flow [2022-01-19 00:36:47,604 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1341, PETRI_PLACES=295, PETRI_TRANSITIONS=240} [2022-01-19 00:36:47,604 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 108 predicate places. [2022-01-19 00:36:47,604 INFO L470 AbstractCegarLoop]: Abstraction has has 295 places, 240 transitions, 1341 flow [2022-01-19 00:36:47,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:47,604 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:47,604 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:47,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-19 00:36:47,605 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:47,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:47,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1027010308, now seen corresponding path program 11 times [2022-01-19 00:36:47,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:47,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731996887] [2022-01-19 00:36:47,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:47,605 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:47,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:47,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:47,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731996887] [2022-01-19 00:36:47,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731996887] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:47,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:47,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:47,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191081769] [2022-01-19 00:36:47,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:47,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:47,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:47,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:47,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:47,684 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:47,684 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 240 transitions, 1341 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:47,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:47,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:47,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:47,928 INFO L129 PetriNetUnfolder]: 103/800 cut-off events. [2022-01-19 00:36:47,928 INFO L130 PetriNetUnfolder]: For 2562/2578 co-relation queries the response was YES. [2022-01-19 00:36:47,932 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2313 conditions, 800 events. 103/800 cut-off events. For 2562/2578 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 5262 event pairs, 42 based on Foata normal form. 4/766 useless extension candidates. Maximal degree in co-relation 2244. Up to 154 conditions per place. [2022-01-19 00:36:47,934 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 61 selfloop transitions, 14 changer transitions 30/261 dead transitions. [2022-01-19 00:36:47,934 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 261 transitions, 1750 flow [2022-01-19 00:36:47,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:36:47,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:36:47,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3084 transitions. [2022-01-19 00:36:47,936 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8158730158730159 [2022-01-19 00:36:47,936 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3084 transitions. [2022-01-19 00:36:47,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3084 transitions. [2022-01-19 00:36:47,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:47,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3084 transitions. [2022-01-19 00:36:47,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.33333333333334) internal successors, (3084), 18 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:47,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:47,940 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:47,940 INFO L186 Difference]: Start difference. First operand has 295 places, 240 transitions, 1341 flow. Second operand 18 states and 3084 transitions. [2022-01-19 00:36:47,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 261 transitions, 1750 flow [2022-01-19 00:36:47,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 261 transitions, 1662 flow, removed 28 selfloop flow, removed 8 redundant places. [2022-01-19 00:36:47,953 INFO L242 Difference]: Finished difference. Result has 301 places, 226 transitions, 1085 flow [2022-01-19 00:36:47,954 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1263, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1085, PETRI_PLACES=301, PETRI_TRANSITIONS=226} [2022-01-19 00:36:47,954 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 114 predicate places. [2022-01-19 00:36:47,954 INFO L470 AbstractCegarLoop]: Abstraction has has 301 places, 226 transitions, 1085 flow [2022-01-19 00:36:47,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:47,954 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:47,954 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:47,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-19 00:36:47,954 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:47,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:47,955 INFO L85 PathProgramCache]: Analyzing trace with hash 863813416, now seen corresponding path program 12 times [2022-01-19 00:36:47,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:47,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605028285] [2022-01-19 00:36:47,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:47,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:48,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:48,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:48,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605028285] [2022-01-19 00:36:48,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605028285] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:48,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:48,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:48,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882512391] [2022-01-19 00:36:48,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:48,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:48,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:48,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:48,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:48,047 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:48,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 226 transitions, 1085 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:48,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:48,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:48,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:48,285 INFO L129 PetriNetUnfolder]: 89/716 cut-off events. [2022-01-19 00:36:48,285 INFO L130 PetriNetUnfolder]: For 2081/2097 co-relation queries the response was YES. [2022-01-19 00:36:48,289 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1964 conditions, 716 events. 89/716 cut-off events. For 2081/2097 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4429 event pairs, 42 based on Foata normal form. 4/683 useless extension candidates. Maximal degree in co-relation 1896. Up to 144 conditions per place. [2022-01-19 00:36:48,290 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 51 selfloop transitions, 3 changer transitions 29/239 dead transitions. [2022-01-19 00:36:48,290 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 239 transitions, 1372 flow [2022-01-19 00:36:48,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:36:48,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:36:48,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3073 transitions. [2022-01-19 00:36:48,292 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.812962962962963 [2022-01-19 00:36:48,292 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3073 transitions. [2022-01-19 00:36:48,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3073 transitions. [2022-01-19 00:36:48,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:48,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3073 transitions. [2022-01-19 00:36:48,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 170.72222222222223) internal successors, (3073), 18 states have internal predecessors, (3073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:48,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:48,296 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:48,296 INFO L186 Difference]: Start difference. First operand has 301 places, 226 transitions, 1085 flow. Second operand 18 states and 3073 transitions. [2022-01-19 00:36:48,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 239 transitions, 1372 flow [2022-01-19 00:36:48,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 239 transitions, 1255 flow, removed 19 selfloop flow, removed 19 redundant places. [2022-01-19 00:36:48,307 INFO L242 Difference]: Finished difference. Result has 287 places, 206 transitions, 762 flow [2022-01-19 00:36:48,307 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=984, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=762, PETRI_PLACES=287, PETRI_TRANSITIONS=206} [2022-01-19 00:36:48,307 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 100 predicate places. [2022-01-19 00:36:48,307 INFO L470 AbstractCegarLoop]: Abstraction has has 287 places, 206 transitions, 762 flow [2022-01-19 00:36:48,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:48,308 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:48,308 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:48,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-19 00:36:48,308 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:48,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:48,308 INFO L85 PathProgramCache]: Analyzing trace with hash -484428534, now seen corresponding path program 13 times [2022-01-19 00:36:48,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:48,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459395959] [2022-01-19 00:36:48,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:48,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:48,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:48,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:48,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459395959] [2022-01-19 00:36:48,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459395959] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:48,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:48,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:48,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455336362] [2022-01-19 00:36:48,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:48,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:48,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:48,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:48,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:48,392 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:48,393 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 206 transitions, 762 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:48,393 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:48,393 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:48,393 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:48,688 INFO L129 PetriNetUnfolder]: 104/809 cut-off events. [2022-01-19 00:36:48,689 INFO L130 PetriNetUnfolder]: For 2107/2110 co-relation queries the response was YES. [2022-01-19 00:36:48,693 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2177 conditions, 809 events. 104/809 cut-off events. For 2107/2110 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5324 event pairs, 39 based on Foata normal form. 1/775 useless extension candidates. Maximal degree in co-relation 2114. Up to 129 conditions per place. [2022-01-19 00:36:48,694 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 56 selfloop transitions, 20 changer transitions 29/261 dead transitions. [2022-01-19 00:36:48,694 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 261 transitions, 1591 flow [2022-01-19 00:36:48,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 00:36:48,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 00:36:48,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3762 transitions. [2022-01-19 00:36:48,697 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8142857142857143 [2022-01-19 00:36:48,697 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3762 transitions. [2022-01-19 00:36:48,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3762 transitions. [2022-01-19 00:36:48,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:48,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3762 transitions. [2022-01-19 00:36:48,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 171.0) internal successors, (3762), 22 states have internal predecessors, (3762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:48,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:48,702 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:48,702 INFO L186 Difference]: Start difference. First operand has 287 places, 206 transitions, 762 flow. Second operand 22 states and 3762 transitions. [2022-01-19 00:36:48,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 261 transitions, 1591 flow [2022-01-19 00:36:48,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 261 transitions, 1442 flow, removed 33 selfloop flow, removed 20 redundant places. [2022-01-19 00:36:48,710 INFO L242 Difference]: Finished difference. Result has 274 places, 218 transitions, 916 flow [2022-01-19 00:36:48,711 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=916, PETRI_PLACES=274, PETRI_TRANSITIONS=218} [2022-01-19 00:36:48,711 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 87 predicate places. [2022-01-19 00:36:48,711 INFO L470 AbstractCegarLoop]: Abstraction has has 274 places, 218 transitions, 916 flow [2022-01-19 00:36:48,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:48,711 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:48,711 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:48,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-19 00:36:48,711 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:48,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:48,712 INFO L85 PathProgramCache]: Analyzing trace with hash 375959954, now seen corresponding path program 14 times [2022-01-19 00:36:48,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:48,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124083537] [2022-01-19 00:36:48,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:48,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:48,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:48,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:48,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124083537] [2022-01-19 00:36:48,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124083537] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:48,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:48,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:48,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435040790] [2022-01-19 00:36:48,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:48,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:48,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:48,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:48,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:48,789 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:48,790 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 218 transitions, 916 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:48,790 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:48,790 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:48,790 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:49,033 INFO L129 PetriNetUnfolder]: 106/799 cut-off events. [2022-01-19 00:36:49,034 INFO L130 PetriNetUnfolder]: For 2143/2146 co-relation queries the response was YES. [2022-01-19 00:36:49,037 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2256 conditions, 799 events. 106/799 cut-off events. For 2143/2146 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5172 event pairs, 41 based on Foata normal form. 1/764 useless extension candidates. Maximal degree in co-relation 2195. Up to 139 conditions per place. [2022-01-19 00:36:49,039 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 54 selfloop transitions, 27 changer transitions 24/261 dead transitions. [2022-01-19 00:36:49,039 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 261 transitions, 1636 flow [2022-01-19 00:36:49,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 00:36:49,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 00:36:49,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2914 transitions. [2022-01-19 00:36:49,041 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8162464985994398 [2022-01-19 00:36:49,041 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2914 transitions. [2022-01-19 00:36:49,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2914 transitions. [2022-01-19 00:36:49,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:49,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2914 transitions. [2022-01-19 00:36:49,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.41176470588235) internal successors, (2914), 17 states have internal predecessors, (2914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:49,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:49,045 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:49,045 INFO L186 Difference]: Start difference. First operand has 274 places, 218 transitions, 916 flow. Second operand 17 states and 2914 transitions. [2022-01-19 00:36:49,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 261 transitions, 1636 flow [2022-01-19 00:36:49,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 261 transitions, 1553 flow, removed 35 selfloop flow, removed 11 redundant places. [2022-01-19 00:36:49,054 INFO L242 Difference]: Finished difference. Result has 275 places, 226 transitions, 1075 flow [2022-01-19 00:36:49,054 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1075, PETRI_PLACES=275, PETRI_TRANSITIONS=226} [2022-01-19 00:36:49,054 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 88 predicate places. [2022-01-19 00:36:49,054 INFO L470 AbstractCegarLoop]: Abstraction has has 275 places, 226 transitions, 1075 flow [2022-01-19 00:36:49,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:49,055 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:49,055 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:49,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-19 00:36:49,055 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:49,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:49,055 INFO L85 PathProgramCache]: Analyzing trace with hash -406108784, now seen corresponding path program 15 times [2022-01-19 00:36:49,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:49,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253574701] [2022-01-19 00:36:49,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:49,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:49,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:49,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:49,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253574701] [2022-01-19 00:36:49,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253574701] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:49,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:49,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:49,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438196451] [2022-01-19 00:36:49,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:49,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:49,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:49,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:49,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:49,134 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:49,135 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 226 transitions, 1075 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:49,135 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:49,135 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:49,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:49,336 INFO L129 PetriNetUnfolder]: 104/816 cut-off events. [2022-01-19 00:36:49,336 INFO L130 PetriNetUnfolder]: For 2435/2438 co-relation queries the response was YES. [2022-01-19 00:36:49,340 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2318 conditions, 816 events. 104/816 cut-off events. For 2435/2438 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5412 event pairs, 39 based on Foata normal form. 1/781 useless extension candidates. Maximal degree in co-relation 2257. Up to 140 conditions per place. [2022-01-19 00:36:49,341 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 56 selfloop transitions, 24 changer transitions 27/263 dead transitions. [2022-01-19 00:36:49,342 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 263 transitions, 1729 flow [2022-01-19 00:36:49,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 00:36:49,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 00:36:49,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2749 transitions. [2022-01-19 00:36:49,343 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8181547619047619 [2022-01-19 00:36:49,343 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2749 transitions. [2022-01-19 00:36:49,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2749 transitions. [2022-01-19 00:36:49,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:49,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2749 transitions. [2022-01-19 00:36:49,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 171.8125) internal successors, (2749), 16 states have internal predecessors, (2749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:49,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:49,347 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:49,347 INFO L186 Difference]: Start difference. First operand has 275 places, 226 transitions, 1075 flow. Second operand 16 states and 2749 transitions. [2022-01-19 00:36:49,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 263 transitions, 1729 flow [2022-01-19 00:36:49,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 263 transitions, 1623 flow, removed 26 selfloop flow, removed 9 redundant places. [2022-01-19 00:36:49,357 INFO L242 Difference]: Finished difference. Result has 281 places, 230 transitions, 1147 flow [2022-01-19 00:36:49,357 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=998, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1147, PETRI_PLACES=281, PETRI_TRANSITIONS=230} [2022-01-19 00:36:49,357 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 94 predicate places. [2022-01-19 00:36:49,357 INFO L470 AbstractCegarLoop]: Abstraction has has 281 places, 230 transitions, 1147 flow [2022-01-19 00:36:49,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:49,358 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:49,358 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:49,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-19 00:36:49,358 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:49,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:49,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1088777360, now seen corresponding path program 16 times [2022-01-19 00:36:49,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:49,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537783355] [2022-01-19 00:36:49,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:49,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:49,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:49,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:49,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537783355] [2022-01-19 00:36:49,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537783355] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:49,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:49,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:49,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147402450] [2022-01-19 00:36:49,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:49,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:49,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:49,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:49,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:49,431 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:49,432 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 230 transitions, 1147 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:49,432 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:49,432 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:49,432 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:49,670 INFO L129 PetriNetUnfolder]: 103/803 cut-off events. [2022-01-19 00:36:49,670 INFO L130 PetriNetUnfolder]: For 2500/2503 co-relation queries the response was YES. [2022-01-19 00:36:49,673 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2298 conditions, 803 events. 103/803 cut-off events. For 2500/2503 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5272 event pairs, 38 based on Foata normal form. 1/768 useless extension candidates. Maximal degree in co-relation 2235. Up to 127 conditions per place. [2022-01-19 00:36:49,675 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 61 selfloop transitions, 25 changer transitions 29/271 dead transitions. [2022-01-19 00:36:49,675 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 271 transitions, 1937 flow [2022-01-19 00:36:49,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 00:36:49,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 00:36:49,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3592 transitions. [2022-01-19 00:36:49,677 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8145124716553288 [2022-01-19 00:36:49,677 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3592 transitions. [2022-01-19 00:36:49,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3592 transitions. [2022-01-19 00:36:49,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:49,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3592 transitions. [2022-01-19 00:36:49,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.04761904761904) internal successors, (3592), 21 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:49,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:49,681 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:49,681 INFO L186 Difference]: Start difference. First operand has 281 places, 230 transitions, 1147 flow. Second operand 21 states and 3592 transitions. [2022-01-19 00:36:49,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 271 transitions, 1937 flow [2022-01-19 00:36:49,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 271 transitions, 1810 flow, removed 37 selfloop flow, removed 8 redundant places. [2022-01-19 00:36:49,692 INFO L242 Difference]: Finished difference. Result has 300 places, 233 transitions, 1223 flow [2022-01-19 00:36:49,692 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1223, PETRI_PLACES=300, PETRI_TRANSITIONS=233} [2022-01-19 00:36:49,692 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 113 predicate places. [2022-01-19 00:36:49,692 INFO L470 AbstractCegarLoop]: Abstraction has has 300 places, 233 transitions, 1223 flow [2022-01-19 00:36:49,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:49,693 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:49,693 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:49,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-19 00:36:49,693 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:49,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:49,693 INFO L85 PathProgramCache]: Analyzing trace with hash -714938564, now seen corresponding path program 17 times [2022-01-19 00:36:49,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:49,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140365452] [2022-01-19 00:36:49,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:49,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:49,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:49,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:49,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:49,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140365452] [2022-01-19 00:36:49,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140365452] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:49,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:49,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:49,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060062668] [2022-01-19 00:36:49,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:49,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:49,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:49,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:49,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:49,779 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:49,780 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 233 transitions, 1223 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:49,780 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:49,780 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:49,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:49,988 INFO L129 PetriNetUnfolder]: 88/727 cut-off events. [2022-01-19 00:36:49,989 INFO L130 PetriNetUnfolder]: For 2321/2324 co-relation queries the response was YES. [2022-01-19 00:36:49,992 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2036 conditions, 727 events. 88/727 cut-off events. For 2321/2324 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4538 event pairs, 35 based on Foata normal form. 1/693 useless extension candidates. Maximal degree in co-relation 1965. Up to 129 conditions per place. [2022-01-19 00:36:49,993 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 54 selfloop transitions, 13 changer transitions 29/252 dead transitions. [2022-01-19 00:36:49,994 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 252 transitions, 1616 flow [2022-01-19 00:36:49,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:36:49,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:36:49,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3077 transitions. [2022-01-19 00:36:49,995 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.814021164021164 [2022-01-19 00:36:49,995 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3077 transitions. [2022-01-19 00:36:49,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3077 transitions. [2022-01-19 00:36:49,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:49,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3077 transitions. [2022-01-19 00:36:49,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 170.94444444444446) internal successors, (3077), 18 states have internal predecessors, (3077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:49,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:49,999 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:49,999 INFO L186 Difference]: Start difference. First operand has 300 places, 233 transitions, 1223 flow. Second operand 18 states and 3077 transitions. [2022-01-19 00:36:49,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 252 transitions, 1616 flow [2022-01-19 00:36:50,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 252 transitions, 1502 flow, removed 37 selfloop flow, removed 16 redundant places. [2022-01-19 00:36:50,011 INFO L242 Difference]: Finished difference. Result has 295 places, 218 transitions, 983 flow [2022-01-19 00:36:50,011 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1138, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=983, PETRI_PLACES=295, PETRI_TRANSITIONS=218} [2022-01-19 00:36:50,011 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 108 predicate places. [2022-01-19 00:36:50,011 INFO L470 AbstractCegarLoop]: Abstraction has has 295 places, 218 transitions, 983 flow [2022-01-19 00:36:50,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:50,012 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:50,012 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:50,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-19 00:36:50,012 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:50,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:50,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1676233364, now seen corresponding path program 18 times [2022-01-19 00:36:50,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:50,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552361157] [2022-01-19 00:36:50,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:50,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:50,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:50,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:50,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:50,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552361157] [2022-01-19 00:36:50,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552361157] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:50,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:50,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:50,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226381442] [2022-01-19 00:36:50,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:50,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:50,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:50,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:50,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:50,092 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:50,093 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 218 transitions, 983 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:50,093 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:50,093 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:50,093 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:50,317 INFO L129 PetriNetUnfolder]: 84/702 cut-off events. [2022-01-19 00:36:50,318 INFO L130 PetriNetUnfolder]: For 2014/2017 co-relation queries the response was YES. [2022-01-19 00:36:50,320 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1905 conditions, 702 events. 84/702 cut-off events. For 2014/2017 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4293 event pairs, 37 based on Foata normal form. 1/667 useless extension candidates. Maximal degree in co-relation 1840. Up to 125 conditions per place. [2022-01-19 00:36:50,321 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 44 selfloop transitions, 21 changer transitions 26/247 dead transitions. [2022-01-19 00:36:50,321 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 247 transitions, 1551 flow [2022-01-19 00:36:50,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:36:50,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:36:50,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3082 transitions. [2022-01-19 00:36:50,324 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8153439153439154 [2022-01-19 00:36:50,325 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3082 transitions. [2022-01-19 00:36:50,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3082 transitions. [2022-01-19 00:36:50,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:50,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3082 transitions. [2022-01-19 00:36:50,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.22222222222223) internal successors, (3082), 18 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:50,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:50,328 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:50,329 INFO L186 Difference]: Start difference. First operand has 295 places, 218 transitions, 983 flow. Second operand 18 states and 3082 transitions. [2022-01-19 00:36:50,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 247 transitions, 1551 flow [2022-01-19 00:36:50,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 247 transitions, 1403 flow, removed 34 selfloop flow, removed 19 redundant places. [2022-01-19 00:36:50,337 INFO L242 Difference]: Finished difference. Result has 275 places, 219 transitions, 987 flow [2022-01-19 00:36:50,338 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=987, PETRI_PLACES=275, PETRI_TRANSITIONS=219} [2022-01-19 00:36:50,338 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 88 predicate places. [2022-01-19 00:36:50,338 INFO L470 AbstractCegarLoop]: Abstraction has has 275 places, 219 transitions, 987 flow [2022-01-19 00:36:50,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:50,338 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:50,338 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:50,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-19 00:36:50,338 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:50,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:50,339 INFO L85 PathProgramCache]: Analyzing trace with hash -287046144, now seen corresponding path program 19 times [2022-01-19 00:36:50,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:50,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565058849] [2022-01-19 00:36:50,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:50,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:50,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:50,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:50,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565058849] [2022-01-19 00:36:50,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565058849] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:50,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:50,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:50,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131730027] [2022-01-19 00:36:50,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:50,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:50,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:50,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:50,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:50,421 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:50,422 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 219 transitions, 987 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:50,422 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:50,422 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:50,422 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:50,629 INFO L129 PetriNetUnfolder]: 80/674 cut-off events. [2022-01-19 00:36:50,629 INFO L130 PetriNetUnfolder]: For 1330/1333 co-relation queries the response was YES. [2022-01-19 00:36:50,632 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1714 conditions, 674 events. 80/674 cut-off events. For 1330/1333 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4077 event pairs, 36 based on Foata normal form. 1/638 useless extension candidates. Maximal degree in co-relation 1657. Up to 124 conditions per place. [2022-01-19 00:36:50,633 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 43 selfloop transitions, 12 changer transitions 29/240 dead transitions. [2022-01-19 00:36:50,634 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 240 transitions, 1340 flow [2022-01-19 00:36:50,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 00:36:50,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 00:36:50,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2911 transitions. [2022-01-19 00:36:50,635 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.815406162464986 [2022-01-19 00:36:50,635 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2911 transitions. [2022-01-19 00:36:50,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2911 transitions. [2022-01-19 00:36:50,636 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:50,636 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2911 transitions. [2022-01-19 00:36:50,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.23529411764707) internal successors, (2911), 17 states have internal predecessors, (2911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:50,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:50,639 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:50,639 INFO L186 Difference]: Start difference. First operand has 275 places, 219 transitions, 987 flow. Second operand 17 states and 2911 transitions. [2022-01-19 00:36:50,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 240 transitions, 1340 flow [2022-01-19 00:36:50,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 240 transitions, 1212 flow, removed 31 selfloop flow, removed 11 redundant places. [2022-01-19 00:36:50,647 INFO L242 Difference]: Finished difference. Result has 278 places, 210 transitions, 812 flow [2022-01-19 00:36:50,647 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=890, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=812, PETRI_PLACES=278, PETRI_TRANSITIONS=210} [2022-01-19 00:36:50,647 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 91 predicate places. [2022-01-19 00:36:50,647 INFO L470 AbstractCegarLoop]: Abstraction has has 278 places, 210 transitions, 812 flow [2022-01-19 00:36:50,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:50,648 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:50,648 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:50,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-19 00:36:50,648 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:50,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:50,648 INFO L85 PathProgramCache]: Analyzing trace with hash -590390434, now seen corresponding path program 20 times [2022-01-19 00:36:50,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:50,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22437337] [2022-01-19 00:36:50,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:50,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:50,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:50,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:50,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22437337] [2022-01-19 00:36:50,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22437337] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:50,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:50,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:36:50,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246609319] [2022-01-19 00:36:50,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:50,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:36:50,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:50,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:36:50,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:36:50,726 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2022-01-19 00:36:50,727 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 210 transitions, 812 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:50,727 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:50,727 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2022-01-19 00:36:50,727 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:50,900 INFO L129 PetriNetUnfolder]: 66/586 cut-off events. [2022-01-19 00:36:50,900 INFO L130 PetriNetUnfolder]: For 820/823 co-relation queries the response was YES. [2022-01-19 00:36:50,903 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1342 conditions, 586 events. 66/586 cut-off events. For 820/823 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3388 event pairs, 33 based on Foata normal form. 1/552 useless extension candidates. Maximal degree in co-relation 1285. Up to 101 conditions per place. [2022-01-19 00:36:50,904 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 29 selfloop transitions, 0 changer transitions 41/220 dead transitions. [2022-01-19 00:36:50,904 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 220 transitions, 991 flow [2022-01-19 00:36:50,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:36:50,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:36:50,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3069 transitions. [2022-01-19 00:36:50,905 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8119047619047619 [2022-01-19 00:36:50,905 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3069 transitions. [2022-01-19 00:36:50,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3069 transitions. [2022-01-19 00:36:50,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:50,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3069 transitions. [2022-01-19 00:36:50,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 170.5) internal successors, (3069), 18 states have internal predecessors, (3069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:50,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:50,909 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:50,909 INFO L186 Difference]: Start difference. First operand has 278 places, 210 transitions, 812 flow. Second operand 18 states and 3069 transitions. [2022-01-19 00:36:50,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 220 transitions, 991 flow [2022-01-19 00:36:50,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 220 transitions, 914 flow, removed 16 selfloop flow, removed 17 redundant places. [2022-01-19 00:36:50,914 INFO L242 Difference]: Finished difference. Result has 265 places, 179 transitions, 472 flow [2022-01-19 00:36:50,915 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=472, PETRI_PLACES=265, PETRI_TRANSITIONS=179} [2022-01-19 00:36:50,915 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 78 predicate places. [2022-01-19 00:36:50,915 INFO L470 AbstractCegarLoop]: Abstraction has has 265 places, 179 transitions, 472 flow [2022-01-19 00:36:50,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:50,915 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:50,915 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:50,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-19 00:36:50,915 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:50,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:50,916 INFO L85 PathProgramCache]: Analyzing trace with hash 470272266, now seen corresponding path program 1 times [2022-01-19 00:36:50,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:50,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947368038] [2022-01-19 00:36:50,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:50,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:51,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:51,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:51,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947368038] [2022-01-19 00:36:51,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947368038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:51,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:51,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:36:51,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99597625] [2022-01-19 00:36:51,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:51,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:36:51,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:51,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:36:51,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:36:51,048 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:36:51,049 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 179 transitions, 472 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:51,049 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:51,049 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:36:51,049 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:51,553 INFO L129 PetriNetUnfolder]: 336/1137 cut-off events. [2022-01-19 00:36:51,553 INFO L130 PetriNetUnfolder]: For 2119/2120 co-relation queries the response was YES. [2022-01-19 00:36:51,558 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2965 conditions, 1137 events. 336/1137 cut-off events. For 2119/2120 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 7293 event pairs, 109 based on Foata normal form. 1/1077 useless extension candidates. Maximal degree in co-relation 2915. Up to 309 conditions per place. [2022-01-19 00:36:51,560 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 102 selfloop transitions, 30 changer transitions 43/312 dead transitions. [2022-01-19 00:36:51,560 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 312 transitions, 1656 flow [2022-01-19 00:36:51,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:36:51,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:36:51,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4659 transitions. [2022-01-19 00:36:51,563 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.765024630541872 [2022-01-19 00:36:51,563 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4659 transitions. [2022-01-19 00:36:51,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4659 transitions. [2022-01-19 00:36:51,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:51,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4659 transitions. [2022-01-19 00:36:51,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.6551724137931) internal successors, (4659), 29 states have internal predecessors, (4659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:51,568 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:51,569 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:51,569 INFO L186 Difference]: Start difference. First operand has 265 places, 179 transitions, 472 flow. Second operand 29 states and 4659 transitions. [2022-01-19 00:36:51,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 312 transitions, 1656 flow [2022-01-19 00:36:51,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 312 transitions, 1502 flow, removed 77 selfloop flow, removed 11 redundant places. [2022-01-19 00:36:51,575 INFO L242 Difference]: Finished difference. Result has 259 places, 211 transitions, 826 flow [2022-01-19 00:36:51,576 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=826, PETRI_PLACES=259, PETRI_TRANSITIONS=211} [2022-01-19 00:36:51,576 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 72 predicate places. [2022-01-19 00:36:51,576 INFO L470 AbstractCegarLoop]: Abstraction has has 259 places, 211 transitions, 826 flow [2022-01-19 00:36:51,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:51,576 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:51,576 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:51,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-19 00:36:51,577 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:51,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:51,577 INFO L85 PathProgramCache]: Analyzing trace with hash 238501890, now seen corresponding path program 2 times [2022-01-19 00:36:51,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:51,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507018691] [2022-01-19 00:36:51,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:51,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:51,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:51,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:51,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507018691] [2022-01-19 00:36:51,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507018691] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:51,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:51,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:36:51,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858249241] [2022-01-19 00:36:51,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:51,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:36:51,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:51,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:36:51,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:36:51,686 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:36:51,686 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 211 transitions, 826 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:51,687 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:51,687 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:36:51,687 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:52,171 INFO L129 PetriNetUnfolder]: 521/1512 cut-off events. [2022-01-19 00:36:52,171 INFO L130 PetriNetUnfolder]: For 5285/5285 co-relation queries the response was YES. [2022-01-19 00:36:52,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5360 conditions, 1512 events. 521/1512 cut-off events. For 5285/5285 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 10267 event pairs, 172 based on Foata normal form. 1/1440 useless extension candidates. Maximal degree in co-relation 5300. Up to 503 conditions per place. [2022-01-19 00:36:52,180 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 137 selfloop transitions, 43 changer transitions 43/360 dead transitions. [2022-01-19 00:36:52,180 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 360 transitions, 2389 flow [2022-01-19 00:36:52,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-19 00:36:52,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-01-19 00:36:52,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4191 transitions. [2022-01-19 00:36:52,183 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7675824175824176 [2022-01-19 00:36:52,183 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4191 transitions. [2022-01-19 00:36:52,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4191 transitions. [2022-01-19 00:36:52,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:52,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4191 transitions. [2022-01-19 00:36:52,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 161.19230769230768) internal successors, (4191), 26 states have internal predecessors, (4191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:52,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:52,188 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:52,188 INFO L186 Difference]: Start difference. First operand has 259 places, 211 transitions, 826 flow. Second operand 26 states and 4191 transitions. [2022-01-19 00:36:52,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 360 transitions, 2389 flow [2022-01-19 00:36:52,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 360 transitions, 2014 flow, removed 182 selfloop flow, removed 13 redundant places. [2022-01-19 00:36:52,202 INFO L242 Difference]: Finished difference. Result has 280 places, 239 transitions, 1102 flow [2022-01-19 00:36:52,202 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=679, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1102, PETRI_PLACES=280, PETRI_TRANSITIONS=239} [2022-01-19 00:36:52,203 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 93 predicate places. [2022-01-19 00:36:52,203 INFO L470 AbstractCegarLoop]: Abstraction has has 280 places, 239 transitions, 1102 flow [2022-01-19 00:36:52,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:52,203 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:52,203 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:52,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-19 00:36:52,203 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:52,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:52,204 INFO L85 PathProgramCache]: Analyzing trace with hash -750854726, now seen corresponding path program 3 times [2022-01-19 00:36:52,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:52,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546105543] [2022-01-19 00:36:52,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:52,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:52,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:52,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:52,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:52,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546105543] [2022-01-19 00:36:52,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546105543] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:52,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:52,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:36:52,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60417493] [2022-01-19 00:36:52,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:52,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:36:52,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:52,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:36:52,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:36:52,310 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:36:52,311 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 239 transitions, 1102 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:52,311 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:52,311 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:36:52,311 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:53,215 INFO L129 PetriNetUnfolder]: 553/1727 cut-off events. [2022-01-19 00:36:53,215 INFO L130 PetriNetUnfolder]: For 7207/7207 co-relation queries the response was YES. [2022-01-19 00:36:53,225 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6575 conditions, 1727 events. 553/1727 cut-off events. For 7207/7207 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 12651 event pairs, 191 based on Foata normal form. 1/1657 useless extension candidates. Maximal degree in co-relation 6504. Up to 494 conditions per place. [2022-01-19 00:36:53,229 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 271 selfloop transitions, 29 changer transitions 94/531 dead transitions. [2022-01-19 00:36:53,229 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 531 transitions, 4332 flow [2022-01-19 00:36:53,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-19 00:36:53,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-01-19 00:36:53,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 9250 transitions. [2022-01-19 00:36:53,234 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7594417077175698 [2022-01-19 00:36:53,234 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 9250 transitions. [2022-01-19 00:36:53,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 9250 transitions. [2022-01-19 00:36:53,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:53,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 9250 transitions. [2022-01-19 00:36:53,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 159.48275862068965) internal successors, (9250), 58 states have internal predecessors, (9250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:53,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:53,245 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:53,245 INFO L186 Difference]: Start difference. First operand has 280 places, 239 transitions, 1102 flow. Second operand 58 states and 9250 transitions. [2022-01-19 00:36:53,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 531 transitions, 4332 flow [2022-01-19 00:36:53,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 531 transitions, 3980 flow, removed 175 selfloop flow, removed 11 redundant places. [2022-01-19 00:36:53,268 INFO L242 Difference]: Finished difference. Result has 366 places, 243 transitions, 1265 flow [2022-01-19 00:36:53,268 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=1265, PETRI_PLACES=366, PETRI_TRANSITIONS=243} [2022-01-19 00:36:53,269 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 179 predicate places. [2022-01-19 00:36:53,269 INFO L470 AbstractCegarLoop]: Abstraction has has 366 places, 243 transitions, 1265 flow [2022-01-19 00:36:53,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:53,269 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:53,269 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:53,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-19 00:36:53,269 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:53,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:53,270 INFO L85 PathProgramCache]: Analyzing trace with hash 256393280, now seen corresponding path program 4 times [2022-01-19 00:36:53,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:53,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839672788] [2022-01-19 00:36:53,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:53,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:53,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:53,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:53,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839672788] [2022-01-19 00:36:53,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839672788] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:53,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:53,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:36:53,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521128525] [2022-01-19 00:36:53,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:53,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:36:53,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:53,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:36:53,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:36:53,376 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:36:53,377 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 243 transitions, 1265 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:53,377 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:53,377 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:36:53,377 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:54,021 INFO L129 PetriNetUnfolder]: 583/1732 cut-off events. [2022-01-19 00:36:54,021 INFO L130 PetriNetUnfolder]: For 15135/15135 co-relation queries the response was YES. [2022-01-19 00:36:54,033 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8169 conditions, 1732 events. 583/1732 cut-off events. For 15135/15135 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 12341 event pairs, 202 based on Foata normal form. 1/1653 useless extension candidates. Maximal degree in co-relation 8057. Up to 548 conditions per place. [2022-01-19 00:36:54,037 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 181 selfloop transitions, 38 changer transitions 44/400 dead transitions. [2022-01-19 00:36:54,037 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 400 transitions, 3587 flow [2022-01-19 00:36:54,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 00:36:54,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 00:36:54,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4354 transitions. [2022-01-19 00:36:54,039 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7679012345679013 [2022-01-19 00:36:54,040 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4354 transitions. [2022-01-19 00:36:54,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4354 transitions. [2022-01-19 00:36:54,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:54,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4354 transitions. [2022-01-19 00:36:54,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 161.25925925925927) internal successors, (4354), 27 states have internal predecessors, (4354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:54,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:54,045 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:54,045 INFO L186 Difference]: Start difference. First operand has 366 places, 243 transitions, 1265 flow. Second operand 27 states and 4354 transitions. [2022-01-19 00:36:54,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 400 transitions, 3587 flow [2022-01-19 00:36:54,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 400 transitions, 3296 flow, removed 143 selfloop flow, removed 40 redundant places. [2022-01-19 00:36:54,079 INFO L242 Difference]: Finished difference. Result has 325 places, 267 transitions, 1629 flow [2022-01-19 00:36:54,079 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1159, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1629, PETRI_PLACES=325, PETRI_TRANSITIONS=267} [2022-01-19 00:36:54,079 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 138 predicate places. [2022-01-19 00:36:54,079 INFO L470 AbstractCegarLoop]: Abstraction has has 325 places, 267 transitions, 1629 flow [2022-01-19 00:36:54,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:54,080 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:54,080 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:54,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-19 00:36:54,080 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:54,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:54,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1779093400, now seen corresponding path program 1 times [2022-01-19 00:36:54,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:54,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245503329] [2022-01-19 00:36:54,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:54,080 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:54,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:54,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:54,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245503329] [2022-01-19 00:36:54,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245503329] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:54,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:54,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 00:36:54,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756354801] [2022-01-19 00:36:54,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:54,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 00:36:54,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:54,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 00:36:54,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 00:36:54,105 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-01-19 00:36:54,105 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 267 transitions, 1629 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:54,105 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:54,105 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-01-19 00:36:54,105 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:54,271 INFO L129 PetriNetUnfolder]: 258/1465 cut-off events. [2022-01-19 00:36:54,271 INFO L130 PetriNetUnfolder]: For 9685/9778 co-relation queries the response was YES. [2022-01-19 00:36:54,282 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5398 conditions, 1465 events. 258/1465 cut-off events. For 9685/9778 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 10711 event pairs, 107 based on Foata normal form. 6/1389 useless extension candidates. Maximal degree in co-relation 5305. Up to 118 conditions per place. [2022-01-19 00:36:54,285 INFO L132 encePairwiseOnDemand]: 204/210 looper letters, 15 selfloop transitions, 3 changer transitions 0/273 dead transitions. [2022-01-19 00:36:54,285 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 273 transitions, 1680 flow [2022-01-19 00:36:54,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 00:36:54,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 00:36:54,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-01-19 00:36:54,287 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-01-19 00:36:54,287 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-01-19 00:36:54,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-01-19 00:36:54,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:54,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-01-19 00:36:54,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:54,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:54,288 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:54,288 INFO L186 Difference]: Start difference. First operand has 325 places, 267 transitions, 1629 flow. Second operand 3 states and 591 transitions. [2022-01-19 00:36:54,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 273 transitions, 1680 flow [2022-01-19 00:36:54,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 273 transitions, 1545 flow, removed 57 selfloop flow, removed 17 redundant places. [2022-01-19 00:36:54,313 INFO L242 Difference]: Finished difference. Result has 300 places, 270 transitions, 1524 flow [2022-01-19 00:36:54,314 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1494, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1524, PETRI_PLACES=300, PETRI_TRANSITIONS=270} [2022-01-19 00:36:54,314 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 113 predicate places. [2022-01-19 00:36:54,314 INFO L470 AbstractCegarLoop]: Abstraction has has 300 places, 270 transitions, 1524 flow [2022-01-19 00:36:54,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:54,314 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:54,314 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:54,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-19 00:36:54,315 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:54,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:54,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1934595890, now seen corresponding path program 5 times [2022-01-19 00:36:54,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:54,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749316142] [2022-01-19 00:36:54,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:54,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:54,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:54,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:54,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749316142] [2022-01-19 00:36:54,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749316142] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:54,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:54,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:36:54,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252620176] [2022-01-19 00:36:54,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:54,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:36:54,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:54,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:36:54,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:36:54,437 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:36:54,437 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 270 transitions, 1524 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:54,437 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:54,437 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:36:54,437 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:55,540 INFO L129 PetriNetUnfolder]: 964/2916 cut-off events. [2022-01-19 00:36:55,540 INFO L130 PetriNetUnfolder]: For 19450/19450 co-relation queries the response was YES. [2022-01-19 00:36:55,559 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12742 conditions, 2916 events. 964/2916 cut-off events. For 19450/19450 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 22377 event pairs, 402 based on Foata normal form. 1/2797 useless extension candidates. Maximal degree in co-relation 12662. Up to 1086 conditions per place. [2022-01-19 00:36:55,567 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 207 selfloop transitions, 43 changer transitions 84/474 dead transitions. [2022-01-19 00:36:55,567 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 474 transitions, 4619 flow [2022-01-19 00:36:55,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-19 00:36:55,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-01-19 00:36:55,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7971 transitions. [2022-01-19 00:36:55,570 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7591428571428571 [2022-01-19 00:36:55,570 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7971 transitions. [2022-01-19 00:36:55,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7971 transitions. [2022-01-19 00:36:55,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:55,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7971 transitions. [2022-01-19 00:36:55,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 159.42) internal successors, (7971), 50 states have internal predecessors, (7971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:55,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:55,581 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:55,581 INFO L186 Difference]: Start difference. First operand has 300 places, 270 transitions, 1524 flow. Second operand 50 states and 7971 transitions. [2022-01-19 00:36:55,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 474 transitions, 4619 flow [2022-01-19 00:36:55,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 474 transitions, 4616 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 00:36:55,628 INFO L242 Difference]: Finished difference. Result has 395 places, 289 transitions, 2040 flow [2022-01-19 00:36:55,629 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1521, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=2040, PETRI_PLACES=395, PETRI_TRANSITIONS=289} [2022-01-19 00:36:55,629 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 208 predicate places. [2022-01-19 00:36:55,629 INFO L470 AbstractCegarLoop]: Abstraction has has 395 places, 289 transitions, 2040 flow [2022-01-19 00:36:55,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:55,629 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:55,630 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:55,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-19 00:36:55,630 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:55,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:55,630 INFO L85 PathProgramCache]: Analyzing trace with hash 268855270, now seen corresponding path program 1 times [2022-01-19 00:36:55,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:55,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605075448] [2022-01-19 00:36:55,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:55,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:55,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:55,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:55,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:55,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605075448] [2022-01-19 00:36:55,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605075448] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:55,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:55,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 00:36:55,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591584363] [2022-01-19 00:36:55,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:55,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 00:36:55,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:55,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 00:36:55,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 00:36:55,651 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-01-19 00:36:55,652 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 289 transitions, 2040 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:55,652 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:55,652 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-01-19 00:36:55,652 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:55,841 INFO L129 PetriNetUnfolder]: 254/1361 cut-off events. [2022-01-19 00:36:55,841 INFO L130 PetriNetUnfolder]: For 17416/17554 co-relation queries the response was YES. [2022-01-19 00:36:55,853 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6245 conditions, 1361 events. 254/1361 cut-off events. For 17416/17554 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 9284 event pairs, 100 based on Foata normal form. 9/1307 useless extension candidates. Maximal degree in co-relation 6118. Up to 106 conditions per place. [2022-01-19 00:36:55,857 INFO L132 encePairwiseOnDemand]: 202/210 looper letters, 16 selfloop transitions, 5 changer transitions 0/295 dead transitions. [2022-01-19 00:36:55,857 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 295 transitions, 2103 flow [2022-01-19 00:36:55,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 00:36:55,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 00:36:55,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-01-19 00:36:55,858 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-01-19 00:36:55,858 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-01-19 00:36:55,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-01-19 00:36:55,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:55,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-01-19 00:36:55,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:55,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:55,859 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:55,859 INFO L186 Difference]: Start difference. First operand has 395 places, 289 transitions, 2040 flow. Second operand 3 states and 591 transitions. [2022-01-19 00:36:55,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 295 transitions, 2103 flow [2022-01-19 00:36:55,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 295 transitions, 1990 flow, removed 50 selfloop flow, removed 24 redundant places. [2022-01-19 00:36:55,910 INFO L242 Difference]: Finished difference. Result has 337 places, 292 transitions, 1971 flow [2022-01-19 00:36:55,910 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1927, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1971, PETRI_PLACES=337, PETRI_TRANSITIONS=292} [2022-01-19 00:36:55,910 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 150 predicate places. [2022-01-19 00:36:55,910 INFO L470 AbstractCegarLoop]: Abstraction has has 337 places, 292 transitions, 1971 flow [2022-01-19 00:36:55,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:55,910 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:55,911 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:55,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-19 00:36:55,911 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:55,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:55,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1698434106, now seen corresponding path program 6 times [2022-01-19 00:36:55,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:55,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334984457] [2022-01-19 00:36:55,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:55,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:55,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:56,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:56,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:56,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334984457] [2022-01-19 00:36:56,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334984457] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:56,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:56,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:36:56,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145530650] [2022-01-19 00:36:56,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:56,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:36:56,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:56,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:36:56,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:36:56,024 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:36:56,024 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 292 transitions, 1971 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:56,025 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:56,025 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:36:56,025 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:57,143 INFO L129 PetriNetUnfolder]: 787/2591 cut-off events. [2022-01-19 00:36:57,143 INFO L130 PetriNetUnfolder]: For 30444/30466 co-relation queries the response was YES. [2022-01-19 00:36:57,164 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13366 conditions, 2591 events. 787/2591 cut-off events. For 30444/30466 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 19430 event pairs, 367 based on Foata normal form. 4/2507 useless extension candidates. Maximal degree in co-relation 13261. Up to 841 conditions per place. [2022-01-19 00:36:57,171 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 217 selfloop transitions, 40 changer transitions 84/484 dead transitions. [2022-01-19 00:36:57,172 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 484 transitions, 5777 flow [2022-01-19 00:36:57,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-19 00:36:57,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-01-19 00:36:57,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 8287 transitions. [2022-01-19 00:36:57,175 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7588827838827839 [2022-01-19 00:36:57,175 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 8287 transitions. [2022-01-19 00:36:57,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 8287 transitions. [2022-01-19 00:36:57,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:57,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 8287 transitions. [2022-01-19 00:36:57,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 159.3653846153846) internal successors, (8287), 52 states have internal predecessors, (8287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:57,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:57,185 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:57,185 INFO L186 Difference]: Start difference. First operand has 337 places, 292 transitions, 1971 flow. Second operand 52 states and 8287 transitions. [2022-01-19 00:36:57,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 484 transitions, 5777 flow [2022-01-19 00:36:57,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 484 transitions, 5761 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-01-19 00:36:57,249 INFO L242 Difference]: Finished difference. Result has 430 places, 312 transitions, 2485 flow [2022-01-19 00:36:57,250 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1955, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=2485, PETRI_PLACES=430, PETRI_TRANSITIONS=312} [2022-01-19 00:36:57,250 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 243 predicate places. [2022-01-19 00:36:57,250 INFO L470 AbstractCegarLoop]: Abstraction has has 430 places, 312 transitions, 2485 flow [2022-01-19 00:36:57,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:57,250 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:57,250 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:57,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-19 00:36:57,251 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:57,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:57,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1987803174, now seen corresponding path program 7 times [2022-01-19 00:36:57,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:57,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097711413] [2022-01-19 00:36:57,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:57,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:57,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:57,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:57,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097711413] [2022-01-19 00:36:57,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097711413] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:57,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:57,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:36:57,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841502032] [2022-01-19 00:36:57,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:57,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:36:57,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:57,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:36:57,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:36:57,357 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:36:57,358 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 312 transitions, 2485 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:57,358 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:57,358 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:36:57,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:58,453 INFO L129 PetriNetUnfolder]: 798/2638 cut-off events. [2022-01-19 00:36:58,454 INFO L130 PetriNetUnfolder]: For 59883/59905 co-relation queries the response was YES. [2022-01-19 00:36:58,479 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16409 conditions, 2638 events. 798/2638 cut-off events. For 59883/59905 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 19934 event pairs, 424 based on Foata normal form. 1/2538 useless extension candidates. Maximal degree in co-relation 16260. Up to 871 conditions per place. [2022-01-19 00:36:58,487 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 225 selfloop transitions, 42 changer transitions 84/494 dead transitions. [2022-01-19 00:36:58,487 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 494 transitions, 7503 flow [2022-01-19 00:36:58,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-19 00:36:58,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-01-19 00:36:58,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 8132 transitions. [2022-01-19 00:36:58,491 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7592903828197946 [2022-01-19 00:36:58,491 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 8132 transitions. [2022-01-19 00:36:58,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 8132 transitions. [2022-01-19 00:36:58,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:58,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 8132 transitions. [2022-01-19 00:36:58,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 159.45098039215685) internal successors, (8132), 51 states have internal predecessors, (8132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:58,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 210.0) internal successors, (10920), 52 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:58,500 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 210.0) internal successors, (10920), 52 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:58,501 INFO L186 Difference]: Start difference. First operand has 430 places, 312 transitions, 2485 flow. Second operand 51 states and 8132 transitions. [2022-01-19 00:36:58,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 494 transitions, 7503 flow [2022-01-19 00:36:58,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 494 transitions, 6335 flow, removed 584 selfloop flow, removed 35 redundant places. [2022-01-19 00:36:58,618 INFO L242 Difference]: Finished difference. Result has 452 places, 330 transitions, 2951 flow [2022-01-19 00:36:58,618 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2353, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=2951, PETRI_PLACES=452, PETRI_TRANSITIONS=330} [2022-01-19 00:36:58,618 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 265 predicate places. [2022-01-19 00:36:58,618 INFO L470 AbstractCegarLoop]: Abstraction has has 452 places, 330 transitions, 2951 flow [2022-01-19 00:36:58,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:58,619 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:58,619 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:58,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-19 00:36:58,619 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:58,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:58,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1981189114, now seen corresponding path program 8 times [2022-01-19 00:36:58,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:58,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891049342] [2022-01-19 00:36:58,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:58,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:58,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:58,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:58,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891049342] [2022-01-19 00:36:58,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891049342] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:58,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:58,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:36:58,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059442755] [2022-01-19 00:36:58,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:58,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:36:58,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:58,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:36:58,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:36:58,730 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:36:58,731 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 330 transitions, 2951 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:58,731 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:58,731 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:36:58,731 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:59,875 INFO L129 PetriNetUnfolder]: 789/2620 cut-off events. [2022-01-19 00:36:59,875 INFO L130 PetriNetUnfolder]: For 62265/62287 co-relation queries the response was YES. [2022-01-19 00:36:59,903 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16651 conditions, 2620 events. 789/2620 cut-off events. For 62265/62287 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 19913 event pairs, 391 based on Foata normal form. 1/2518 useless extension candidates. Maximal degree in co-relation 16489. Up to 900 conditions per place. [2022-01-19 00:36:59,911 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 274 selfloop transitions, 74 changer transitions 87/578 dead transitions. [2022-01-19 00:36:59,911 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 578 transitions, 9606 flow [2022-01-19 00:36:59,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-19 00:36:59,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-01-19 00:36:59,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7962 transitions. [2022-01-19 00:36:59,914 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7582857142857143 [2022-01-19 00:36:59,914 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7962 transitions. [2022-01-19 00:36:59,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7962 transitions. [2022-01-19 00:36:59,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:59,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7962 transitions. [2022-01-19 00:36:59,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 159.24) internal successors, (7962), 50 states have internal predecessors, (7962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:59,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:59,924 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:59,924 INFO L186 Difference]: Start difference. First operand has 452 places, 330 transitions, 2951 flow. Second operand 50 states and 7962 transitions. [2022-01-19 00:36:59,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 578 transitions, 9606 flow [2022-01-19 00:37:00,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 578 transitions, 8511 flow, removed 532 selfloop flow, removed 38 redundant places. [2022-01-19 00:37:00,099 INFO L242 Difference]: Finished difference. Result has 469 places, 360 transitions, 3861 flow [2022-01-19 00:37:00,099 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2757, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=3861, PETRI_PLACES=469, PETRI_TRANSITIONS=360} [2022-01-19 00:37:00,099 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 282 predicate places. [2022-01-19 00:37:00,099 INFO L470 AbstractCegarLoop]: Abstraction has has 469 places, 360 transitions, 3861 flow [2022-01-19 00:37:00,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:00,100 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:00,100 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:00,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-19 00:37:00,100 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:00,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:00,100 INFO L85 PathProgramCache]: Analyzing trace with hash 254084890, now seen corresponding path program 9 times [2022-01-19 00:37:00,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:00,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518034324] [2022-01-19 00:37:00,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:00,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:00,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:00,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:00,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:00,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518034324] [2022-01-19 00:37:00,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518034324] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:00,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:00,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:00,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771842657] [2022-01-19 00:37:00,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:00,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:00,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:00,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:00,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:00,210 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:00,211 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 360 transitions, 3861 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:00,211 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:00,211 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:00,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:01,555 INFO L129 PetriNetUnfolder]: 840/2761 cut-off events. [2022-01-19 00:37:01,555 INFO L130 PetriNetUnfolder]: For 58838/58868 co-relation queries the response was YES. [2022-01-19 00:37:01,585 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17523 conditions, 2761 events. 840/2761 cut-off events. For 58838/58868 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 21386 event pairs, 331 based on Foata normal form. 13/2679 useless extension candidates. Maximal degree in co-relation 17353. Up to 898 conditions per place. [2022-01-19 00:37:01,594 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 270 selfloop transitions, 100 changer transitions 86/599 dead transitions. [2022-01-19 00:37:01,594 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 599 transitions, 9427 flow [2022-01-19 00:37:01,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-19 00:37:01,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-01-19 00:37:01,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 8596 transitions. [2022-01-19 00:37:01,598 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7580246913580246 [2022-01-19 00:37:01,598 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 8596 transitions. [2022-01-19 00:37:01,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 8596 transitions. [2022-01-19 00:37:01,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:01,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 8596 transitions. [2022-01-19 00:37:01,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 159.1851851851852) internal successors, (8596), 54 states have internal predecessors, (8596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:01,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 210.0) internal successors, (11550), 55 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:01,608 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 210.0) internal successors, (11550), 55 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:01,608 INFO L186 Difference]: Start difference. First operand has 469 places, 360 transitions, 3861 flow. Second operand 54 states and 8596 transitions. [2022-01-19 00:37:01,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 599 transitions, 9427 flow [2022-01-19 00:37:01,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 599 transitions, 8355 flow, removed 486 selfloop flow, removed 33 redundant places. [2022-01-19 00:37:01,794 INFO L242 Difference]: Finished difference. Result has 494 places, 383 transitions, 4122 flow [2022-01-19 00:37:01,795 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3365, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=4122, PETRI_PLACES=494, PETRI_TRANSITIONS=383} [2022-01-19 00:37:01,795 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 307 predicate places. [2022-01-19 00:37:01,795 INFO L470 AbstractCegarLoop]: Abstraction has has 494 places, 383 transitions, 4122 flow [2022-01-19 00:37:01,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:01,795 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:01,795 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:01,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-19 00:37:01,796 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:01,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:01,796 INFO L85 PathProgramCache]: Analyzing trace with hash -38496598, now seen corresponding path program 10 times [2022-01-19 00:37:01,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:01,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418186696] [2022-01-19 00:37:01,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:01,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:01,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:01,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:01,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418186696] [2022-01-19 00:37:01,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418186696] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:01,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:01,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:01,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529394557] [2022-01-19 00:37:01,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:01,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:01,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:01,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:01,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:01,907 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:01,908 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 383 transitions, 4122 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:01,908 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:01,908 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:01,908 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:03,274 INFO L129 PetriNetUnfolder]: 835/2749 cut-off events. [2022-01-19 00:37:03,274 INFO L130 PetriNetUnfolder]: For 55420/55459 co-relation queries the response was YES. [2022-01-19 00:37:03,306 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17415 conditions, 2749 events. 835/2749 cut-off events. For 55420/55459 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 21226 event pairs, 352 based on Foata normal form. 13/2662 useless extension candidates. Maximal degree in co-relation 17233. Up to 890 conditions per place. [2022-01-19 00:37:03,314 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 252 selfloop transitions, 94 changer transitions 87/576 dead transitions. [2022-01-19 00:37:03,315 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 504 places, 576 transitions, 8826 flow [2022-01-19 00:37:03,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-19 00:37:03,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-01-19 00:37:03,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 8442 transitions. [2022-01-19 00:37:03,318 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7584905660377359 [2022-01-19 00:37:03,318 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 8442 transitions. [2022-01-19 00:37:03,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 8442 transitions. [2022-01-19 00:37:03,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:03,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 8442 transitions. [2022-01-19 00:37:03,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 159.28301886792454) internal successors, (8442), 53 states have internal predecessors, (8442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:03,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 210.0) internal successors, (11340), 54 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:03,328 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 210.0) internal successors, (11340), 54 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:03,328 INFO L186 Difference]: Start difference. First operand has 494 places, 383 transitions, 4122 flow. Second operand 53 states and 8442 transitions. [2022-01-19 00:37:03,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 504 places, 576 transitions, 8826 flow [2022-01-19 00:37:03,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 576 transitions, 8197 flow, removed 293 selfloop flow, removed 43 redundant places. [2022-01-19 00:37:03,503 INFO L242 Difference]: Finished difference. Result has 504 places, 390 transitions, 4463 flow [2022-01-19 00:37:03,504 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3951, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=4463, PETRI_PLACES=504, PETRI_TRANSITIONS=390} [2022-01-19 00:37:03,504 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 317 predicate places. [2022-01-19 00:37:03,504 INFO L470 AbstractCegarLoop]: Abstraction has has 504 places, 390 transitions, 4463 flow [2022-01-19 00:37:03,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:03,504 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:03,505 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:03,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-19 00:37:03,505 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:03,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:03,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1573113274, now seen corresponding path program 11 times [2022-01-19 00:37:03,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:03,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367308815] [2022-01-19 00:37:03,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:03,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:03,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:03,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:03,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:03,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367308815] [2022-01-19 00:37:03,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367308815] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:03,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:03,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:03,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183472215] [2022-01-19 00:37:03,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:03,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:03,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:03,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:03,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:03,614 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:03,615 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 390 transitions, 4463 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:03,615 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:03,615 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:03,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:04,644 INFO L129 PetriNetUnfolder]: 818/2661 cut-off events. [2022-01-19 00:37:04,645 INFO L130 PetriNetUnfolder]: For 54849/54891 co-relation queries the response was YES. [2022-01-19 00:37:04,675 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17117 conditions, 2661 events. 818/2661 cut-off events. For 54849/54891 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 20252 event pairs, 349 based on Foata normal form. 13/2570 useless extension candidates. Maximal degree in co-relation 16934. Up to 920 conditions per place. [2022-01-19 00:37:04,684 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 239 selfloop transitions, 101 changer transitions 65/548 dead transitions. [2022-01-19 00:37:04,684 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 548 transitions, 8380 flow [2022-01-19 00:37:04,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-19 00:37:04,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-01-19 00:37:04,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5442 transitions. [2022-01-19 00:37:04,687 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7621848739495798 [2022-01-19 00:37:04,687 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5442 transitions. [2022-01-19 00:37:04,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5442 transitions. [2022-01-19 00:37:04,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:04,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5442 transitions. [2022-01-19 00:37:04,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 160.05882352941177) internal successors, (5442), 34 states have internal predecessors, (5442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:04,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:04,693 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:04,693 INFO L186 Difference]: Start difference. First operand has 504 places, 390 transitions, 4463 flow. Second operand 34 states and 5442 transitions. [2022-01-19 00:37:04,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 548 transitions, 8380 flow [2022-01-19 00:37:04,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 457 places, 548 transitions, 7727 flow, removed 280 selfloop flow, removed 39 redundant places. [2022-01-19 00:37:04,898 INFO L242 Difference]: Finished difference. Result has 476 places, 398 transitions, 4664 flow [2022-01-19 00:37:04,898 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4231, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=4664, PETRI_PLACES=476, PETRI_TRANSITIONS=398} [2022-01-19 00:37:04,899 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 289 predicate places. [2022-01-19 00:37:04,899 INFO L470 AbstractCegarLoop]: Abstraction has has 476 places, 398 transitions, 4664 flow [2022-01-19 00:37:04,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:04,899 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:04,899 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:04,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-19 00:37:04,899 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:04,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:04,900 INFO L85 PathProgramCache]: Analyzing trace with hash -2080920916, now seen corresponding path program 12 times [2022-01-19 00:37:04,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:04,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033539348] [2022-01-19 00:37:04,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:04,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:04,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:05,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:05,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:05,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033539348] [2022-01-19 00:37:05,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033539348] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:05,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:05,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:05,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669316856] [2022-01-19 00:37:05,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:05,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:05,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:05,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:05,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:05,024 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:05,025 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 398 transitions, 4664 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:05,025 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:05,025 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:05,025 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:06,223 INFO L129 PetriNetUnfolder]: 816/2636 cut-off events. [2022-01-19 00:37:06,224 INFO L130 PetriNetUnfolder]: For 49346/49379 co-relation queries the response was YES. [2022-01-19 00:37:06,255 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16751 conditions, 2636 events. 816/2636 cut-off events. For 49346/49379 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 20184 event pairs, 360 based on Foata normal form. 9/2539 useless extension candidates. Maximal degree in co-relation 16586. Up to 920 conditions per place. [2022-01-19 00:37:06,264 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 263 selfloop transitions, 110 changer transitions 78/594 dead transitions. [2022-01-19 00:37:06,265 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 594 transitions, 9738 flow [2022-01-19 00:37:06,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-19 00:37:06,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-01-19 00:37:06,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 6702 transitions. [2022-01-19 00:37:06,276 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7598639455782313 [2022-01-19 00:37:06,276 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 6702 transitions. [2022-01-19 00:37:06,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 6702 transitions. [2022-01-19 00:37:06,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:06,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 6702 transitions. [2022-01-19 00:37:06,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 159.57142857142858) internal successors, (6702), 42 states have internal predecessors, (6702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:06,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 210.0) internal successors, (9030), 43 states have internal predecessors, (9030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:06,285 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 210.0) internal successors, (9030), 43 states have internal predecessors, (9030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:06,285 INFO L186 Difference]: Start difference. First operand has 476 places, 398 transitions, 4664 flow. Second operand 42 states and 6702 transitions. [2022-01-19 00:37:06,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 594 transitions, 9738 flow [2022-01-19 00:37:06,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 594 transitions, 9249 flow, removed 101 selfloop flow, removed 25 redundant places. [2022-01-19 00:37:06,480 INFO L242 Difference]: Finished difference. Result has 507 places, 425 transitions, 5523 flow [2022-01-19 00:37:06,481 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4380, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=5523, PETRI_PLACES=507, PETRI_TRANSITIONS=425} [2022-01-19 00:37:06,481 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 320 predicate places. [2022-01-19 00:37:06,481 INFO L470 AbstractCegarLoop]: Abstraction has has 507 places, 425 transitions, 5523 flow [2022-01-19 00:37:06,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:06,481 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:06,481 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:06,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-19 00:37:06,482 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:06,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:06,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1464945574, now seen corresponding path program 13 times [2022-01-19 00:37:06,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:06,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802855707] [2022-01-19 00:37:06,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:06,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:06,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:06,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:06,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:06,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802855707] [2022-01-19 00:37:06,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802855707] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:06,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:06,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:06,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707034980] [2022-01-19 00:37:06,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:06,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:06,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:06,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:06,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:06,588 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:06,589 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 425 transitions, 5523 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:06,589 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:06,589 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:06,589 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:07,908 INFO L129 PetriNetUnfolder]: 811/2813 cut-off events. [2022-01-19 00:37:07,909 INFO L130 PetriNetUnfolder]: For 54173/54203 co-relation queries the response was YES. [2022-01-19 00:37:07,937 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17423 conditions, 2813 events. 811/2813 cut-off events. For 54173/54203 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 21827 event pairs, 274 based on Foata normal form. 1/2736 useless extension candidates. Maximal degree in co-relation 17242. Up to 706 conditions per place. [2022-01-19 00:37:07,946 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 437 selfloop transitions, 108 changer transitions 108/794 dead transitions. [2022-01-19 00:37:07,946 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 794 transitions, 13148 flow [2022-01-19 00:37:07,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-19 00:37:07,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-01-19 00:37:07,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 9236 transitions. [2022-01-19 00:37:07,950 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7582922824302135 [2022-01-19 00:37:07,950 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 9236 transitions. [2022-01-19 00:37:07,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 9236 transitions. [2022-01-19 00:37:07,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:07,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 9236 transitions. [2022-01-19 00:37:07,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 159.24137931034483) internal successors, (9236), 58 states have internal predecessors, (9236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:07,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:07,961 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:07,961 INFO L186 Difference]: Start difference. First operand has 507 places, 425 transitions, 5523 flow. Second operand 58 states and 9236 transitions. [2022-01-19 00:37:07,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 794 transitions, 13148 flow [2022-01-19 00:37:08,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 506 places, 794 transitions, 12239 flow, removed 295 selfloop flow, removed 29 redundant places. [2022-01-19 00:37:08,184 INFO L242 Difference]: Finished difference. Result has 555 places, 425 transitions, 5484 flow [2022-01-19 00:37:08,184 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4954, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=5484, PETRI_PLACES=555, PETRI_TRANSITIONS=425} [2022-01-19 00:37:08,185 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 368 predicate places. [2022-01-19 00:37:08,185 INFO L470 AbstractCegarLoop]: Abstraction has has 555 places, 425 transitions, 5484 flow [2022-01-19 00:37:08,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:08,185 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:08,185 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:08,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-19 00:37:08,185 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:08,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:08,186 INFO L85 PathProgramCache]: Analyzing trace with hash 2053203194, now seen corresponding path program 14 times [2022-01-19 00:37:08,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:08,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661778910] [2022-01-19 00:37:08,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:08,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:08,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:08,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:08,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661778910] [2022-01-19 00:37:08,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661778910] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:08,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:08,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:08,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781748560] [2022-01-19 00:37:08,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:08,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:08,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:08,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:08,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:08,286 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:08,287 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 555 places, 425 transitions, 5484 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:08,287 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:08,287 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:08,287 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:09,571 INFO L129 PetriNetUnfolder]: 803/2774 cut-off events. [2022-01-19 00:37:09,571 INFO L130 PetriNetUnfolder]: For 57037/57067 co-relation queries the response was YES. [2022-01-19 00:37:09,613 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18037 conditions, 2774 events. 803/2774 cut-off events. For 57037/57067 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 21413 event pairs, 341 based on Foata normal form. 13/2695 useless extension candidates. Maximal degree in co-relation 17833. Up to 936 conditions per place. [2022-01-19 00:37:09,689 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 303 selfloop transitions, 128 changer transitions 80/652 dead transitions. [2022-01-19 00:37:09,689 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 652 transitions, 11076 flow [2022-01-19 00:37:09,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 00:37:09,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 00:37:09,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7334 transitions. [2022-01-19 00:37:09,693 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7592132505175984 [2022-01-19 00:37:09,693 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7334 transitions. [2022-01-19 00:37:09,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7334 transitions. [2022-01-19 00:37:09,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:09,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7334 transitions. [2022-01-19 00:37:09,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.43478260869566) internal successors, (7334), 46 states have internal predecessors, (7334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:09,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:09,701 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:09,701 INFO L186 Difference]: Start difference. First operand has 555 places, 425 transitions, 5484 flow. Second operand 46 states and 7334 transitions. [2022-01-19 00:37:09,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 652 transitions, 11076 flow [2022-01-19 00:37:09,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 652 transitions, 10613 flow, removed 76 selfloop flow, removed 51 redundant places. [2022-01-19 00:37:09,934 INFO L242 Difference]: Finished difference. Result has 533 places, 432 transitions, 5805 flow [2022-01-19 00:37:09,934 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5264, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=425, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=5805, PETRI_PLACES=533, PETRI_TRANSITIONS=432} [2022-01-19 00:37:09,935 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 346 predicate places. [2022-01-19 00:37:09,935 INFO L470 AbstractCegarLoop]: Abstraction has has 533 places, 432 transitions, 5805 flow [2022-01-19 00:37:09,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:09,935 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:09,935 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:09,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-19 00:37:09,935 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:09,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:09,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1175875342, now seen corresponding path program 15 times [2022-01-19 00:37:09,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:09,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899695063] [2022-01-19 00:37:09,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:09,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:09,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:10,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:10,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:10,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899695063] [2022-01-19 00:37:10,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899695063] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:10,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:10,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:10,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274747737] [2022-01-19 00:37:10,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:10,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:10,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:10,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:10,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:10,041 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:10,042 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 432 transitions, 5805 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:10,042 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:10,042 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:10,042 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:11,079 INFO L129 PetriNetUnfolder]: 799/2722 cut-off events. [2022-01-19 00:37:11,080 INFO L130 PetriNetUnfolder]: For 57567/57597 co-relation queries the response was YES. [2022-01-19 00:37:11,110 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18013 conditions, 2722 events. 799/2722 cut-off events. For 57567/57597 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 20765 event pairs, 346 based on Foata normal form. 13/2640 useless extension candidates. Maximal degree in co-relation 17823. Up to 956 conditions per place. [2022-01-19 00:37:11,119 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 287 selfloop transitions, 138 changer transitions 59/625 dead transitions. [2022-01-19 00:37:11,119 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 625 transitions, 10713 flow [2022-01-19 00:37:11,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:37:11,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:37:11,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4811 transitions. [2022-01-19 00:37:11,121 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7636507936507937 [2022-01-19 00:37:11,121 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4811 transitions. [2022-01-19 00:37:11,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4811 transitions. [2022-01-19 00:37:11,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:11,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4811 transitions. [2022-01-19 00:37:11,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.36666666666667) internal successors, (4811), 30 states have internal predecessors, (4811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:11,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:11,127 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:11,127 INFO L186 Difference]: Start difference. First operand has 533 places, 432 transitions, 5805 flow. Second operand 30 states and 4811 transitions. [2022-01-19 00:37:11,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 625 transitions, 10713 flow [2022-01-19 00:37:11,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 625 transitions, 10281 flow, removed 166 selfloop flow, removed 30 redundant places. [2022-01-19 00:37:11,363 INFO L242 Difference]: Finished difference. Result has 514 places, 449 transitions, 6384 flow [2022-01-19 00:37:11,363 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5628, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=6384, PETRI_PLACES=514, PETRI_TRANSITIONS=449} [2022-01-19 00:37:11,363 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 327 predicate places. [2022-01-19 00:37:11,363 INFO L470 AbstractCegarLoop]: Abstraction has has 514 places, 449 transitions, 6384 flow [2022-01-19 00:37:11,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:11,364 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:11,364 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:11,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-19 00:37:11,364 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:11,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:11,364 INFO L85 PathProgramCache]: Analyzing trace with hash -200612388, now seen corresponding path program 16 times [2022-01-19 00:37:11,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:11,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145898696] [2022-01-19 00:37:11,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:11,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:11,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:11,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:11,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:11,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145898696] [2022-01-19 00:37:11,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145898696] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:11,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:11,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:11,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994209358] [2022-01-19 00:37:11,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:11,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:11,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:11,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:11,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:11,466 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:11,467 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 514 places, 449 transitions, 6384 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:11,467 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:11,467 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:11,467 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:12,482 INFO L129 PetriNetUnfolder]: 786/2795 cut-off events. [2022-01-19 00:37:12,482 INFO L130 PetriNetUnfolder]: For 57686/57723 co-relation queries the response was YES. [2022-01-19 00:37:12,619 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17847 conditions, 2795 events. 786/2795 cut-off events. For 57686/57723 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 21651 event pairs, 343 based on Foata normal form. 17/2720 useless extension candidates. Maximal degree in co-relation 17670. Up to 940 conditions per place. [2022-01-19 00:37:12,629 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 291 selfloop transitions, 127 changer transitions 70/629 dead transitions. [2022-01-19 00:37:12,630 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 629 transitions, 10852 flow [2022-01-19 00:37:12,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:37:12,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:37:12,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6067 transitions. [2022-01-19 00:37:12,633 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7602756892230577 [2022-01-19 00:37:12,633 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6067 transitions. [2022-01-19 00:37:12,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6067 transitions. [2022-01-19 00:37:12,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:12,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6067 transitions. [2022-01-19 00:37:12,638 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.6578947368421) internal successors, (6067), 38 states have internal predecessors, (6067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:12,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:12,643 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:12,643 INFO L186 Difference]: Start difference. First operand has 514 places, 449 transitions, 6384 flow. Second operand 38 states and 6067 transitions. [2022-01-19 00:37:12,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 629 transitions, 10852 flow [2022-01-19 00:37:12,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 629 transitions, 10594 flow, removed 99 selfloop flow, removed 11 redundant places. [2022-01-19 00:37:12,881 INFO L242 Difference]: Finished difference. Result has 548 places, 444 transitions, 6472 flow [2022-01-19 00:37:12,881 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6227, PETRI_DIFFERENCE_MINUEND_PLACES=488, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=6472, PETRI_PLACES=548, PETRI_TRANSITIONS=444} [2022-01-19 00:37:12,881 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 361 predicate places. [2022-01-19 00:37:12,882 INFO L470 AbstractCegarLoop]: Abstraction has has 548 places, 444 transitions, 6472 flow [2022-01-19 00:37:12,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:12,882 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:12,882 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:12,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-19 00:37:12,882 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:12,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:12,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1043493350, now seen corresponding path program 17 times [2022-01-19 00:37:12,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:12,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119051423] [2022-01-19 00:37:12,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:12,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:12,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:12,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:12,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119051423] [2022-01-19 00:37:12,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119051423] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:12,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:12,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:12,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829464405] [2022-01-19 00:37:12,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:12,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:12,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:12,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:12,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:12,986 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:12,987 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 444 transitions, 6472 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:12,987 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:12,987 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:12,987 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:14,018 INFO L129 PetriNetUnfolder]: 750/2595 cut-off events. [2022-01-19 00:37:14,019 INFO L130 PetriNetUnfolder]: For 57894/57924 co-relation queries the response was YES. [2022-01-19 00:37:14,056 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17213 conditions, 2595 events. 750/2595 cut-off events. For 57894/57924 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 19476 event pairs, 338 based on Foata normal form. 13/2517 useless extension candidates. Maximal degree in co-relation 17022. Up to 930 conditions per place. [2022-01-19 00:37:14,065 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 272 selfloop transitions, 96 changer transitions 62/571 dead transitions. [2022-01-19 00:37:14,065 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 571 transitions, 9638 flow [2022-01-19 00:37:14,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-19 00:37:14,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-01-19 00:37:14,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4169 transitions. [2022-01-19 00:37:14,076 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635531135531135 [2022-01-19 00:37:14,076 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4169 transitions. [2022-01-19 00:37:14,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4169 transitions. [2022-01-19 00:37:14,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:14,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4169 transitions. [2022-01-19 00:37:14,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 160.34615384615384) internal successors, (4169), 26 states have internal predecessors, (4169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:14,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:14,081 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:14,081 INFO L186 Difference]: Start difference. First operand has 548 places, 444 transitions, 6472 flow. Second operand 26 states and 4169 transitions. [2022-01-19 00:37:14,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 571 transitions, 9638 flow [2022-01-19 00:37:14,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 571 transitions, 9370 flow, removed 89 selfloop flow, removed 24 redundant places. [2022-01-19 00:37:14,345 INFO L242 Difference]: Finished difference. Result has 530 places, 396 transitions, 5372 flow [2022-01-19 00:37:14,345 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6276, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=5372, PETRI_PLACES=530, PETRI_TRANSITIONS=396} [2022-01-19 00:37:14,345 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 343 predicate places. [2022-01-19 00:37:14,345 INFO L470 AbstractCegarLoop]: Abstraction has has 530 places, 396 transitions, 5372 flow [2022-01-19 00:37:14,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:14,346 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:14,346 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:14,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-19 00:37:14,346 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:14,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:14,346 INFO L85 PathProgramCache]: Analyzing trace with hash -602702176, now seen corresponding path program 18 times [2022-01-19 00:37:14,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:14,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824327154] [2022-01-19 00:37:14,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:14,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:14,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:14,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:14,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:14,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824327154] [2022-01-19 00:37:14,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824327154] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:14,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:14,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:14,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393156739] [2022-01-19 00:37:14,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:14,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:14,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:14,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:14,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:14,453 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:14,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 396 transitions, 5372 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:14,454 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:14,454 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:14,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:15,544 INFO L129 PetriNetUnfolder]: 779/2772 cut-off events. [2022-01-19 00:37:15,544 INFO L130 PetriNetUnfolder]: For 63636/63664 co-relation queries the response was YES. [2022-01-19 00:37:15,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18192 conditions, 2772 events. 779/2772 cut-off events. For 63636/63664 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 21310 event pairs, 361 based on Foata normal form. 11/2685 useless extension candidates. Maximal degree in co-relation 18016. Up to 928 conditions per place. [2022-01-19 00:37:15,582 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 254 selfloop transitions, 111 changer transitions 68/574 dead transitions. [2022-01-19 00:37:15,582 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 574 transitions, 9980 flow [2022-01-19 00:37:15,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 00:37:15,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 00:37:15,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5918 transitions. [2022-01-19 00:37:15,585 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616473616473617 [2022-01-19 00:37:15,585 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5918 transitions. [2022-01-19 00:37:15,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5918 transitions. [2022-01-19 00:37:15,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:15,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5918 transitions. [2022-01-19 00:37:15,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 159.94594594594594) internal successors, (5918), 37 states have internal predecessors, (5918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:15,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:15,592 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:15,592 INFO L186 Difference]: Start difference. First operand has 530 places, 396 transitions, 5372 flow. Second operand 37 states and 5918 transitions. [2022-01-19 00:37:15,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 574 transitions, 9980 flow [2022-01-19 00:37:15,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 574 transitions, 8876 flow, removed 65 selfloop flow, removed 35 redundant places. [2022-01-19 00:37:15,821 INFO L242 Difference]: Finished difference. Result has 508 places, 415 transitions, 5380 flow [2022-01-19 00:37:15,821 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4638, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=5380, PETRI_PLACES=508, PETRI_TRANSITIONS=415} [2022-01-19 00:37:15,822 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 321 predicate places. [2022-01-19 00:37:15,822 INFO L470 AbstractCegarLoop]: Abstraction has has 508 places, 415 transitions, 5380 flow [2022-01-19 00:37:15,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:15,822 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:15,822 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:15,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-19 00:37:15,822 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:15,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:15,823 INFO L85 PathProgramCache]: Analyzing trace with hash 297519288, now seen corresponding path program 19 times [2022-01-19 00:37:15,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:15,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670722029] [2022-01-19 00:37:15,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:15,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:15,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:15,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:15,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670722029] [2022-01-19 00:37:15,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670722029] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:15,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:15,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:15,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388639981] [2022-01-19 00:37:15,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:15,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:15,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:15,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:15,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:15,940 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:15,940 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 415 transitions, 5380 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:15,941 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:15,941 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:15,941 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:17,113 INFO L129 PetriNetUnfolder]: 819/2902 cut-off events. [2022-01-19 00:37:17,114 INFO L130 PetriNetUnfolder]: For 61114/61142 co-relation queries the response was YES. [2022-01-19 00:37:17,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18501 conditions, 2902 events. 819/2902 cut-off events. For 61114/61142 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 22684 event pairs, 376 based on Foata normal form. 11/2815 useless extension candidates. Maximal degree in co-relation 18321. Up to 944 conditions per place. [2022-01-19 00:37:17,161 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 276 selfloop transitions, 124 changer transitions 79/620 dead transitions. [2022-01-19 00:37:17,161 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 620 transitions, 10595 flow [2022-01-19 00:37:17,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 00:37:17,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 00:37:17,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7340 transitions. [2022-01-19 00:37:17,164 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7598343685300207 [2022-01-19 00:37:17,164 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7340 transitions. [2022-01-19 00:37:17,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7340 transitions. [2022-01-19 00:37:17,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:17,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7340 transitions. [2022-01-19 00:37:17,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.56521739130434) internal successors, (7340), 46 states have internal predecessors, (7340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:17,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:17,173 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:17,173 INFO L186 Difference]: Start difference. First operand has 508 places, 415 transitions, 5380 flow. Second operand 46 states and 7340 transitions. [2022-01-19 00:37:17,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 620 transitions, 10595 flow [2022-01-19 00:37:17,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 620 transitions, 10209 flow, removed 137 selfloop flow, removed 21 redundant places. [2022-01-19 00:37:17,405 INFO L242 Difference]: Finished difference. Result has 543 places, 440 transitions, 6086 flow [2022-01-19 00:37:17,405 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5202, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=415, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=6086, PETRI_PLACES=543, PETRI_TRANSITIONS=440} [2022-01-19 00:37:17,405 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 356 predicate places. [2022-01-19 00:37:17,406 INFO L470 AbstractCegarLoop]: Abstraction has has 543 places, 440 transitions, 6086 flow [2022-01-19 00:37:17,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:17,406 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:17,406 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:17,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-19 00:37:17,406 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:17,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:17,406 INFO L85 PathProgramCache]: Analyzing trace with hash -193100770, now seen corresponding path program 20 times [2022-01-19 00:37:17,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:17,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946139187] [2022-01-19 00:37:17,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:17,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:17,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:17,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:17,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946139187] [2022-01-19 00:37:17,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946139187] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:17,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:17,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:17,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970288957] [2022-01-19 00:37:17,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:17,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:17,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:17,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:17,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:17,520 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:17,521 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 440 transitions, 6086 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:17,521 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:17,521 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:17,521 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:18,787 INFO L129 PetriNetUnfolder]: 813/2914 cut-off events. [2022-01-19 00:37:18,787 INFO L130 PetriNetUnfolder]: For 64230/64258 co-relation queries the response was YES. [2022-01-19 00:37:18,826 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18840 conditions, 2914 events. 813/2914 cut-off events. For 64230/64258 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 22924 event pairs, 377 based on Foata normal form. 11/2828 useless extension candidates. Maximal degree in co-relation 18643. Up to 924 conditions per place. [2022-01-19 00:37:18,835 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 273 selfloop transitions, 127 changer transitions 80/621 dead transitions. [2022-01-19 00:37:18,835 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 554 places, 621 transitions, 10926 flow [2022-01-19 00:37:18,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 00:37:18,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 00:37:18,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7180 transitions. [2022-01-19 00:37:18,838 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7597883597883598 [2022-01-19 00:37:18,838 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7180 transitions. [2022-01-19 00:37:18,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7180 transitions. [2022-01-19 00:37:18,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:18,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7180 transitions. [2022-01-19 00:37:18,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.55555555555554) internal successors, (7180), 45 states have internal predecessors, (7180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:18,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:18,847 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:18,847 INFO L186 Difference]: Start difference. First operand has 543 places, 440 transitions, 6086 flow. Second operand 45 states and 7180 transitions. [2022-01-19 00:37:18,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 554 places, 621 transitions, 10926 flow [2022-01-19 00:37:19,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 621 transitions, 10558 flow, removed 152 selfloop flow, removed 29 redundant places. [2022-01-19 00:37:19,119 INFO L242 Difference]: Finished difference. Result has 559 places, 444 transitions, 6474 flow [2022-01-19 00:37:19,120 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5932, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=6474, PETRI_PLACES=559, PETRI_TRANSITIONS=444} [2022-01-19 00:37:19,120 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 372 predicate places. [2022-01-19 00:37:19,120 INFO L470 AbstractCegarLoop]: Abstraction has has 559 places, 444 transitions, 6474 flow [2022-01-19 00:37:19,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:19,120 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:19,121 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:19,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-19 00:37:19,121 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:19,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:19,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1361915772, now seen corresponding path program 21 times [2022-01-19 00:37:19,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:19,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203096945] [2022-01-19 00:37:19,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:19,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:19,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:19,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:19,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:19,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203096945] [2022-01-19 00:37:19,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203096945] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:19,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:19,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:19,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520211391] [2022-01-19 00:37:19,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:19,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:19,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:19,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:19,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:19,229 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:19,230 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 559 places, 444 transitions, 6474 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:19,230 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:19,230 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:19,230 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:20,499 INFO L129 PetriNetUnfolder]: 804/2847 cut-off events. [2022-01-19 00:37:20,500 INFO L130 PetriNetUnfolder]: For 64950/64978 co-relation queries the response was YES. [2022-01-19 00:37:20,532 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18857 conditions, 2847 events. 804/2847 cut-off events. For 64950/64978 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 22108 event pairs, 366 based on Foata normal form. 11/2760 useless extension candidates. Maximal degree in co-relation 18653. Up to 945 conditions per place. [2022-01-19 00:37:20,542 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 274 selfloop transitions, 124 changer transitions 69/608 dead transitions. [2022-01-19 00:37:20,542 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 564 places, 608 transitions, 10998 flow [2022-01-19 00:37:20,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:37:20,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:37:20,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6078 transitions. [2022-01-19 00:37:20,545 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616541353383459 [2022-01-19 00:37:20,545 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6078 transitions. [2022-01-19 00:37:20,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6078 transitions. [2022-01-19 00:37:20,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:20,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6078 transitions. [2022-01-19 00:37:20,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.94736842105263) internal successors, (6078), 38 states have internal predecessors, (6078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:20,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:20,552 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:20,552 INFO L186 Difference]: Start difference. First operand has 559 places, 444 transitions, 6474 flow. Second operand 38 states and 6078 transitions. [2022-01-19 00:37:20,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 564 places, 608 transitions, 10998 flow [2022-01-19 00:37:20,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 608 transitions, 10536 flow, removed 155 selfloop flow, removed 33 redundant places. [2022-01-19 00:37:20,841 INFO L242 Difference]: Finished difference. Result has 554 places, 451 transitions, 6799 flow [2022-01-19 00:37:20,842 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6236, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=6799, PETRI_PLACES=554, PETRI_TRANSITIONS=451} [2022-01-19 00:37:20,842 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 367 predicate places. [2022-01-19 00:37:20,842 INFO L470 AbstractCegarLoop]: Abstraction has has 554 places, 451 transitions, 6799 flow [2022-01-19 00:37:20,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:20,842 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:20,842 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:20,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-19 00:37:20,842 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:20,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:20,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1406673902, now seen corresponding path program 22 times [2022-01-19 00:37:20,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:20,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237364141] [2022-01-19 00:37:20,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:20,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:20,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:20,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:20,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237364141] [2022-01-19 00:37:20,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237364141] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:20,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:20,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:20,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739070377] [2022-01-19 00:37:20,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:20,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:20,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:20,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:20,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:20,975 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:20,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 451 transitions, 6799 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:20,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:20,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:20,976 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:22,075 INFO L129 PetriNetUnfolder]: 792/2734 cut-off events. [2022-01-19 00:37:22,076 INFO L130 PetriNetUnfolder]: For 63558/63588 co-relation queries the response was YES. [2022-01-19 00:37:22,116 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18524 conditions, 2734 events. 792/2734 cut-off events. For 63558/63588 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20948 event pairs, 368 based on Foata normal form. 13/2648 useless extension candidates. Maximal degree in co-relation 18326. Up to 950 conditions per place. [2022-01-19 00:37:22,125 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 267 selfloop transitions, 124 changer transitions 59/591 dead transitions. [2022-01-19 00:37:22,126 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 559 places, 591 transitions, 10643 flow [2022-01-19 00:37:22,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:37:22,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:37:22,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4816 transitions. [2022-01-19 00:37:22,128 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7644444444444445 [2022-01-19 00:37:22,128 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4816 transitions. [2022-01-19 00:37:22,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4816 transitions. [2022-01-19 00:37:22,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:22,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4816 transitions. [2022-01-19 00:37:22,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.53333333333333) internal successors, (4816), 30 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:22,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:22,134 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:22,134 INFO L186 Difference]: Start difference. First operand has 554 places, 451 transitions, 6799 flow. Second operand 30 states and 4816 transitions. [2022-01-19 00:37:22,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 559 places, 591 transitions, 10643 flow [2022-01-19 00:37:22,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 591 transitions, 10168 flow, removed 155 selfloop flow, removed 22 redundant places. [2022-01-19 00:37:22,442 INFO L242 Difference]: Finished difference. Result has 551 places, 456 transitions, 6961 flow [2022-01-19 00:37:22,442 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6528, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=6961, PETRI_PLACES=551, PETRI_TRANSITIONS=456} [2022-01-19 00:37:22,443 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 364 predicate places. [2022-01-19 00:37:22,443 INFO L470 AbstractCegarLoop]: Abstraction has has 551 places, 456 transitions, 6961 flow [2022-01-19 00:37:22,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:22,443 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:22,443 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:22,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-19 00:37:22,443 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:22,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:22,444 INFO L85 PathProgramCache]: Analyzing trace with hash 773785554, now seen corresponding path program 23 times [2022-01-19 00:37:22,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:22,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849499657] [2022-01-19 00:37:22,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:22,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:22,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:22,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:22,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:22,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849499657] [2022-01-19 00:37:22,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849499657] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:22,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:22,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:22,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022449216] [2022-01-19 00:37:22,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:22,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:22,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:22,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:22,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:22,546 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:22,546 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 456 transitions, 6961 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:22,546 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:22,546 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:22,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:23,575 INFO L129 PetriNetUnfolder]: 785/2722 cut-off events. [2022-01-19 00:37:23,576 INFO L130 PetriNetUnfolder]: For 60860/60890 co-relation queries the response was YES. [2022-01-19 00:37:23,611 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18238 conditions, 2722 events. 785/2722 cut-off events. For 60860/60890 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 20803 event pairs, 370 based on Foata normal form. 13/2636 useless extension candidates. Maximal degree in co-relation 18044. Up to 948 conditions per place. [2022-01-19 00:37:23,620 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 269 selfloop transitions, 127 changer transitions 59/596 dead transitions. [2022-01-19 00:37:23,620 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 596 transitions, 10737 flow [2022-01-19 00:37:23,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:37:23,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:37:23,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4814 transitions. [2022-01-19 00:37:23,623 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7641269841269841 [2022-01-19 00:37:23,623 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4814 transitions. [2022-01-19 00:37:23,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4814 transitions. [2022-01-19 00:37:23,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:23,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4814 transitions. [2022-01-19 00:37:23,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.46666666666667) internal successors, (4814), 30 states have internal predecessors, (4814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:23,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:23,629 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:23,629 INFO L186 Difference]: Start difference. First operand has 551 places, 456 transitions, 6961 flow. Second operand 30 states and 4814 transitions. [2022-01-19 00:37:23,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 596 transitions, 10737 flow [2022-01-19 00:37:23,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 552 places, 596 transitions, 10468 flow, removed 93 selfloop flow, removed 13 redundant places. [2022-01-19 00:37:23,917 INFO L242 Difference]: Finished difference. Result has 566 places, 461 transitions, 7221 flow [2022-01-19 00:37:23,917 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6780, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=456, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7221, PETRI_PLACES=566, PETRI_TRANSITIONS=461} [2022-01-19 00:37:23,918 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 379 predicate places. [2022-01-19 00:37:23,918 INFO L470 AbstractCegarLoop]: Abstraction has has 566 places, 461 transitions, 7221 flow [2022-01-19 00:37:23,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:23,918 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:23,918 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:23,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-19 00:37:23,918 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:23,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:23,919 INFO L85 PathProgramCache]: Analyzing trace with hash 476356618, now seen corresponding path program 24 times [2022-01-19 00:37:23,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:23,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020570480] [2022-01-19 00:37:23,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:23,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:23,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:24,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:24,034 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:24,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020570480] [2022-01-19 00:37:24,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020570480] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:24,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:24,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:24,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927897151] [2022-01-19 00:37:24,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:24,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:24,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:24,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:24,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:24,036 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:24,037 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 566 places, 461 transitions, 7221 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:24,037 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:24,037 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:24,037 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:25,060 INFO L129 PetriNetUnfolder]: 760/2723 cut-off events. [2022-01-19 00:37:25,060 INFO L130 PetriNetUnfolder]: For 61002/61030 co-relation queries the response was YES. [2022-01-19 00:37:25,098 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17750 conditions, 2723 events. 760/2723 cut-off events. For 61002/61030 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 20854 event pairs, 375 based on Foata normal form. 11/2635 useless extension candidates. Maximal degree in co-relation 17552. Up to 936 conditions per place. [2022-01-19 00:37:25,107 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 262 selfloop transitions, 95 changer transitions 62/560 dead transitions. [2022-01-19 00:37:25,107 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 577 places, 560 transitions, 9882 flow [2022-01-19 00:37:25,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 00:37:25,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 00:37:25,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4333 transitions. [2022-01-19 00:37:25,109 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7641975308641975 [2022-01-19 00:37:25,109 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4333 transitions. [2022-01-19 00:37:25,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4333 transitions. [2022-01-19 00:37:25,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:25,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4333 transitions. [2022-01-19 00:37:25,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.4814814814815) internal successors, (4333), 27 states have internal predecessors, (4333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:25,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:25,115 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:25,115 INFO L186 Difference]: Start difference. First operand has 566 places, 461 transitions, 7221 flow. Second operand 27 states and 4333 transitions. [2022-01-19 00:37:25,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 577 places, 560 transitions, 9882 flow [2022-01-19 00:37:25,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 560 transitions, 9638 flow, removed 55 selfloop flow, removed 14 redundant places. [2022-01-19 00:37:25,400 INFO L242 Difference]: Finished difference. Result has 570 places, 424 transitions, 6311 flow [2022-01-19 00:37:25,400 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7012, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=6311, PETRI_PLACES=570, PETRI_TRANSITIONS=424} [2022-01-19 00:37:25,400 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 383 predicate places. [2022-01-19 00:37:25,400 INFO L470 AbstractCegarLoop]: Abstraction has has 570 places, 424 transitions, 6311 flow [2022-01-19 00:37:25,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:25,401 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:25,401 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:25,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-19 00:37:25,401 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:25,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:25,401 INFO L85 PathProgramCache]: Analyzing trace with hash -118413066, now seen corresponding path program 25 times [2022-01-19 00:37:25,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:25,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006848393] [2022-01-19 00:37:25,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:25,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:25,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:25,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:25,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006848393] [2022-01-19 00:37:25,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006848393] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:25,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:25,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:25,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463448874] [2022-01-19 00:37:25,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:25,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:25,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:25,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:25,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:25,513 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:25,514 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 424 transitions, 6311 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:25,514 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:25,514 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:25,514 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:26,604 INFO L129 PetriNetUnfolder]: 759/2666 cut-off events. [2022-01-19 00:37:26,604 INFO L130 PetriNetUnfolder]: For 61442/61472 co-relation queries the response was YES. [2022-01-19 00:37:26,641 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17706 conditions, 2666 events. 759/2666 cut-off events. For 61442/61472 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 20210 event pairs, 354 based on Foata normal form. 13/2587 useless extension candidates. Maximal degree in co-relation 17510. Up to 922 conditions per place. [2022-01-19 00:37:26,650 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 264 selfloop transitions, 105 changer transitions 71/581 dead transitions. [2022-01-19 00:37:26,650 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 567 places, 581 transitions, 10534 flow [2022-01-19 00:37:26,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:37:26,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:37:26,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6075 transitions. [2022-01-19 00:37:26,653 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612781954887218 [2022-01-19 00:37:26,653 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6075 transitions. [2022-01-19 00:37:26,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6075 transitions. [2022-01-19 00:37:26,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:26,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6075 transitions. [2022-01-19 00:37:26,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.8684210526316) internal successors, (6075), 38 states have internal predecessors, (6075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:26,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:26,660 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:26,660 INFO L186 Difference]: Start difference. First operand has 570 places, 424 transitions, 6311 flow. Second operand 38 states and 6075 transitions. [2022-01-19 00:37:26,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 567 places, 581 transitions, 10534 flow [2022-01-19 00:37:26,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 581 transitions, 9689 flow, removed 57 selfloop flow, removed 37 redundant places. [2022-01-19 00:37:26,937 INFO L242 Difference]: Finished difference. Result has 553 places, 428 transitions, 6117 flow [2022-01-19 00:37:26,937 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5691, PETRI_DIFFERENCE_MINUEND_PLACES=493, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=424, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=6117, PETRI_PLACES=553, PETRI_TRANSITIONS=428} [2022-01-19 00:37:26,938 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 366 predicate places. [2022-01-19 00:37:26,938 INFO L470 AbstractCegarLoop]: Abstraction has has 553 places, 428 transitions, 6117 flow [2022-01-19 00:37:26,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:26,938 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:26,938 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:26,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-19 00:37:26,938 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:26,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:26,939 INFO L85 PathProgramCache]: Analyzing trace with hash 106408980, now seen corresponding path program 26 times [2022-01-19 00:37:26,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:26,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070370348] [2022-01-19 00:37:26,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:26,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:26,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:27,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:27,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:27,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070370348] [2022-01-19 00:37:27,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070370348] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:27,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:27,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:27,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702774381] [2022-01-19 00:37:27,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:27,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:27,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:27,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:27,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:27,043 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:27,044 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 428 transitions, 6117 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:27,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:27,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:27,044 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:28,057 INFO L129 PetriNetUnfolder]: 749/2624 cut-off events. [2022-01-19 00:37:28,057 INFO L130 PetriNetUnfolder]: For 55718/55748 co-relation queries the response was YES. [2022-01-19 00:37:28,084 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16946 conditions, 2624 events. 749/2624 cut-off events. For 55718/55748 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 19828 event pairs, 359 based on Foata normal form. 13/2541 useless extension candidates. Maximal degree in co-relation 16749. Up to 928 conditions per place. [2022-01-19 00:37:28,092 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 257 selfloop transitions, 105 changer transitions 60/563 dead transitions. [2022-01-19 00:37:28,092 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 563 transitions, 9714 flow [2022-01-19 00:37:28,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:37:28,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:37:28,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4813 transitions. [2022-01-19 00:37:28,094 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763968253968254 [2022-01-19 00:37:28,094 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4813 transitions. [2022-01-19 00:37:28,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4813 transitions. [2022-01-19 00:37:28,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:28,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4813 transitions. [2022-01-19 00:37:28,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:28,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:28,100 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:28,100 INFO L186 Difference]: Start difference. First operand has 553 places, 428 transitions, 6117 flow. Second operand 30 states and 4813 transitions. [2022-01-19 00:37:28,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 563 transitions, 9714 flow [2022-01-19 00:37:28,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 537 places, 563 transitions, 9359 flow, removed 125 selfloop flow, removed 21 redundant places. [2022-01-19 00:37:28,348 INFO L242 Difference]: Finished difference. Result has 548 places, 430 transitions, 6217 flow [2022-01-19 00:37:28,348 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5923, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=6217, PETRI_PLACES=548, PETRI_TRANSITIONS=430} [2022-01-19 00:37:28,349 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 361 predicate places. [2022-01-19 00:37:28,349 INFO L470 AbstractCegarLoop]: Abstraction has has 548 places, 430 transitions, 6217 flow [2022-01-19 00:37:28,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:28,349 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:28,349 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:28,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-19 00:37:28,349 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:28,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:28,349 INFO L85 PathProgramCache]: Analyzing trace with hash -837207342, now seen corresponding path program 27 times [2022-01-19 00:37:28,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:28,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541297818] [2022-01-19 00:37:28,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:28,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:28,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:28,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:28,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:28,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541297818] [2022-01-19 00:37:28,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541297818] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:28,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:28,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:28,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391040353] [2022-01-19 00:37:28,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:28,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:28,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:28,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:28,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:28,454 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:28,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 548 places, 430 transitions, 6217 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:28,454 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:28,455 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:28,455 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:29,441 INFO L129 PetriNetUnfolder]: 740/2597 cut-off events. [2022-01-19 00:37:29,441 INFO L130 PetriNetUnfolder]: For 53562/53592 co-relation queries the response was YES. [2022-01-19 00:37:29,476 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16677 conditions, 2597 events. 740/2597 cut-off events. For 53562/53592 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 19592 event pairs, 361 based on Foata normal form. 13/2515 useless extension candidates. Maximal degree in co-relation 16487. Up to 926 conditions per place. [2022-01-19 00:37:29,484 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 255 selfloop transitions, 93 changer transitions 59/548 dead transitions. [2022-01-19 00:37:29,484 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 561 places, 548 transitions, 9257 flow [2022-01-19 00:37:29,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:37:29,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:37:29,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4648 transitions. [2022-01-19 00:37:29,486 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7632183908045977 [2022-01-19 00:37:29,487 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4648 transitions. [2022-01-19 00:37:29,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4648 transitions. [2022-01-19 00:37:29,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:29,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4648 transitions. [2022-01-19 00:37:29,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.27586206896552) internal successors, (4648), 29 states have internal predecessors, (4648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:29,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:29,492 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:29,492 INFO L186 Difference]: Start difference. First operand has 548 places, 430 transitions, 6217 flow. Second operand 29 states and 4648 transitions. [2022-01-19 00:37:29,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 561 places, 548 transitions, 9257 flow [2022-01-19 00:37:29,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 545 places, 548 transitions, 8963 flow, removed 64 selfloop flow, removed 16 redundant places. [2022-01-19 00:37:29,738 INFO L242 Difference]: Finished difference. Result has 556 places, 417 transitions, 5872 flow [2022-01-19 00:37:29,738 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5984, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=5872, PETRI_PLACES=556, PETRI_TRANSITIONS=417} [2022-01-19 00:37:29,738 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 369 predicate places. [2022-01-19 00:37:29,739 INFO L470 AbstractCegarLoop]: Abstraction has has 556 places, 417 transitions, 5872 flow [2022-01-19 00:37:29,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:29,739 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:29,739 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:29,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-19 00:37:29,739 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:29,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:29,739 INFO L85 PathProgramCache]: Analyzing trace with hash 714491584, now seen corresponding path program 28 times [2022-01-19 00:37:29,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:29,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024437579] [2022-01-19 00:37:29,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:29,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:29,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:29,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:29,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024437579] [2022-01-19 00:37:29,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024437579] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:29,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:29,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:29,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406673139] [2022-01-19 00:37:29,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:29,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:29,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:29,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:29,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:29,842 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:29,843 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 417 transitions, 5872 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:29,843 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:29,843 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:29,843 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:30,819 INFO L129 PetriNetUnfolder]: 722/2536 cut-off events. [2022-01-19 00:37:30,819 INFO L130 PetriNetUnfolder]: For 52625/52655 co-relation queries the response was YES. [2022-01-19 00:37:30,853 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16235 conditions, 2536 events. 722/2536 cut-off events. For 52625/52655 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 18911 event pairs, 358 based on Foata normal form. 13/2454 useless extension candidates. Maximal degree in co-relation 16044. Up to 916 conditions per place. [2022-01-19 00:37:30,861 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 242 selfloop transitions, 80 changer transitions 61/524 dead transitions. [2022-01-19 00:37:30,862 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 524 transitions, 8586 flow [2022-01-19 00:37:30,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 00:37:30,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 00:37:30,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4488 transitions. [2022-01-19 00:37:30,864 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763265306122449 [2022-01-19 00:37:30,864 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4488 transitions. [2022-01-19 00:37:30,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4488 transitions. [2022-01-19 00:37:30,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:30,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4488 transitions. [2022-01-19 00:37:30,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.28571428571428) internal successors, (4488), 28 states have internal predecessors, (4488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:30,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:30,870 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:30,870 INFO L186 Difference]: Start difference. First operand has 556 places, 417 transitions, 5872 flow. Second operand 28 states and 4488 transitions. [2022-01-19 00:37:30,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 524 transitions, 8586 flow [2022-01-19 00:37:31,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 524 transitions, 8104 flow, removed 33 selfloop flow, removed 31 redundant places. [2022-01-19 00:37:31,108 INFO L242 Difference]: Finished difference. Result has 535 places, 392 transitions, 5065 flow [2022-01-19 00:37:31,109 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5468, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=5065, PETRI_PLACES=535, PETRI_TRANSITIONS=392} [2022-01-19 00:37:31,109 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 348 predicate places. [2022-01-19 00:37:31,109 INFO L470 AbstractCegarLoop]: Abstraction has has 535 places, 392 transitions, 5065 flow [2022-01-19 00:37:31,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:31,109 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:31,109 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:31,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-19 00:37:31,110 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:31,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:31,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1693959950, now seen corresponding path program 29 times [2022-01-19 00:37:31,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:31,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862901121] [2022-01-19 00:37:31,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:31,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:31,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:31,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:31,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862901121] [2022-01-19 00:37:31,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862901121] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:31,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:31,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:31,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302931038] [2022-01-19 00:37:31,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:31,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:31,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:31,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:31,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:31,223 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:31,224 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 392 transitions, 5065 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:31,224 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:31,224 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:31,224 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:32,191 INFO L129 PetriNetUnfolder]: 691/2512 cut-off events. [2022-01-19 00:37:32,192 INFO L130 PetriNetUnfolder]: For 48483/48511 co-relation queries the response was YES. [2022-01-19 00:37:32,227 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15126 conditions, 2512 events. 691/2512 cut-off events. For 48483/48511 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 18663 event pairs, 352 based on Foata normal form. 11/2429 useless extension candidates. Maximal degree in co-relation 14942. Up to 898 conditions per place. [2022-01-19 00:37:32,236 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 216 selfloop transitions, 55 changer transitions 63/475 dead transitions. [2022-01-19 00:37:32,236 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 475 transitions, 7119 flow [2022-01-19 00:37:32,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:37:32,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:37:32,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4784 transitions. [2022-01-19 00:37:32,238 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7593650793650794 [2022-01-19 00:37:32,238 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4784 transitions. [2022-01-19 00:37:32,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4784 transitions. [2022-01-19 00:37:32,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:32,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4784 transitions. [2022-01-19 00:37:32,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.46666666666667) internal successors, (4784), 30 states have internal predecessors, (4784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:32,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:32,244 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:32,245 INFO L186 Difference]: Start difference. First operand has 535 places, 392 transitions, 5065 flow. Second operand 30 states and 4784 transitions. [2022-01-19 00:37:32,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 475 transitions, 7119 flow [2022-01-19 00:37:32,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 497 places, 475 transitions, 6675 flow, removed 30 selfloop flow, removed 34 redundant places. [2022-01-19 00:37:32,439 INFO L242 Difference]: Finished difference. Result has 502 places, 341 transitions, 3736 flow [2022-01-19 00:37:32,440 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4653, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=392, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3736, PETRI_PLACES=502, PETRI_TRANSITIONS=341} [2022-01-19 00:37:32,440 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 315 predicate places. [2022-01-19 00:37:32,440 INFO L470 AbstractCegarLoop]: Abstraction has has 502 places, 341 transitions, 3736 flow [2022-01-19 00:37:32,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:32,440 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:32,440 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:32,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-19 00:37:32,440 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:32,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:32,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1689709140, now seen corresponding path program 30 times [2022-01-19 00:37:32,441 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:32,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910935283] [2022-01-19 00:37:32,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:32,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:32,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:32,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:32,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910935283] [2022-01-19 00:37:32,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910935283] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:32,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:32,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:32,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735066164] [2022-01-19 00:37:32,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:32,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:32,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:32,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:32,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:32,568 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:32,568 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 341 transitions, 3736 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:32,568 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:32,569 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:32,569 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:33,586 INFO L129 PetriNetUnfolder]: 715/2503 cut-off events. [2022-01-19 00:37:33,586 INFO L130 PetriNetUnfolder]: For 46874/46898 co-relation queries the response was YES. [2022-01-19 00:37:33,617 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15320 conditions, 2503 events. 715/2503 cut-off events. For 46874/46898 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 18503 event pairs, 370 based on Foata normal form. 7/2416 useless extension candidates. Maximal degree in co-relation 15150. Up to 898 conditions per place. [2022-01-19 00:37:33,624 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 213 selfloop transitions, 71 changer transitions 62/487 dead transitions. [2022-01-19 00:37:33,624 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 487 transitions, 7449 flow [2022-01-19 00:37:33,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:37:33,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:37:33,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6072 transitions. [2022-01-19 00:37:33,627 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7609022556390977 [2022-01-19 00:37:33,627 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6072 transitions. [2022-01-19 00:37:33,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6072 transitions. [2022-01-19 00:37:33,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:33,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6072 transitions. [2022-01-19 00:37:33,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.78947368421052) internal successors, (6072), 38 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:33,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:33,635 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:33,635 INFO L186 Difference]: Start difference. First operand has 502 places, 341 transitions, 3736 flow. Second operand 38 states and 6072 transitions. [2022-01-19 00:37:33,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 487 transitions, 7449 flow [2022-01-19 00:37:33,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 487 transitions, 6592 flow, removed 137 selfloop flow, removed 34 redundant places. [2022-01-19 00:37:33,793 INFO L242 Difference]: Finished difference. Result has 467 places, 359 transitions, 3958 flow [2022-01-19 00:37:33,793 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3267, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3958, PETRI_PLACES=467, PETRI_TRANSITIONS=359} [2022-01-19 00:37:33,794 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 280 predicate places. [2022-01-19 00:37:33,794 INFO L470 AbstractCegarLoop]: Abstraction has has 467 places, 359 transitions, 3958 flow [2022-01-19 00:37:33,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:33,794 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:33,794 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:33,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-01-19 00:37:33,794 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:33,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:33,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1085254400, now seen corresponding path program 31 times [2022-01-19 00:37:33,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:33,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796599745] [2022-01-19 00:37:33,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:33,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:33,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:33,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:33,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:33,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796599745] [2022-01-19 00:37:33,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796599745] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:33,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:33,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:33,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362366521] [2022-01-19 00:37:33,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:33,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:33,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:33,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:33,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:33,906 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:33,907 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 359 transitions, 3958 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:33,907 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:33,907 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:33,907 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:34,892 INFO L129 PetriNetUnfolder]: 745/2571 cut-off events. [2022-01-19 00:37:34,892 INFO L130 PetriNetUnfolder]: For 42544/42568 co-relation queries the response was YES. [2022-01-19 00:37:34,923 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15251 conditions, 2571 events. 745/2571 cut-off events. For 42544/42568 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 19146 event pairs, 384 based on Foata normal form. 7/2483 useless extension candidates. Maximal degree in co-relation 15083. Up to 898 conditions per place. [2022-01-19 00:37:34,931 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 219 selfloop transitions, 82 changer transitions 62/504 dead transitions. [2022-01-19 00:37:34,931 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 504 transitions, 7670 flow [2022-01-19 00:37:34,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 00:37:34,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 00:37:34,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5604 transitions. [2022-01-19 00:37:34,934 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7624489795918368 [2022-01-19 00:37:34,934 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5604 transitions. [2022-01-19 00:37:34,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5604 transitions. [2022-01-19 00:37:34,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:34,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5604 transitions. [2022-01-19 00:37:34,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.11428571428573) internal successors, (5604), 35 states have internal predecessors, (5604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:34,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:34,940 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:34,941 INFO L186 Difference]: Start difference. First operand has 467 places, 359 transitions, 3958 flow. Second operand 35 states and 5604 transitions. [2022-01-19 00:37:34,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 504 transitions, 7670 flow [2022-01-19 00:37:35,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 461 places, 504 transitions, 7021 flow, removed 283 selfloop flow, removed 16 redundant places. [2022-01-19 00:37:35,108 INFO L242 Difference]: Finished difference. Result has 487 places, 378 transitions, 4374 flow [2022-01-19 00:37:35,108 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3678, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4374, PETRI_PLACES=487, PETRI_TRANSITIONS=378} [2022-01-19 00:37:35,108 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 300 predicate places. [2022-01-19 00:37:35,108 INFO L470 AbstractCegarLoop]: Abstraction has has 487 places, 378 transitions, 4374 flow [2022-01-19 00:37:35,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:35,109 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:35,109 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:35,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-01-19 00:37:35,109 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:35,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:35,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1540722402, now seen corresponding path program 32 times [2022-01-19 00:37:35,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:35,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147384558] [2022-01-19 00:37:35,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:35,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:35,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:35,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:35,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147384558] [2022-01-19 00:37:35,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147384558] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:35,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:35,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:35,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209171424] [2022-01-19 00:37:35,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:35,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:35,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:35,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:35,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:35,213 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:35,214 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 487 places, 378 transitions, 4374 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:35,214 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:35,214 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:35,214 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:36,247 INFO L129 PetriNetUnfolder]: 767/2649 cut-off events. [2022-01-19 00:37:36,247 INFO L130 PetriNetUnfolder]: For 46385/46409 co-relation queries the response was YES. [2022-01-19 00:37:36,282 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16125 conditions, 2649 events. 767/2649 cut-off events. For 46385/46409 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 19902 event pairs, 375 based on Foata normal form. 7/2560 useless extension candidates. Maximal degree in co-relation 15945. Up to 898 conditions per place. [2022-01-19 00:37:36,290 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 233 selfloop transitions, 86 changer transitions 62/522 dead transitions. [2022-01-19 00:37:36,290 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 522 transitions, 8175 flow [2022-01-19 00:37:36,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 00:37:36,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 00:37:36,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5918 transitions. [2022-01-19 00:37:36,293 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616473616473617 [2022-01-19 00:37:36,293 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5918 transitions. [2022-01-19 00:37:36,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5918 transitions. [2022-01-19 00:37:36,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:36,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5918 transitions. [2022-01-19 00:37:36,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 159.94594594594594) internal successors, (5918), 37 states have internal predecessors, (5918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:36,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:36,301 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:36,301 INFO L186 Difference]: Start difference. First operand has 487 places, 378 transitions, 4374 flow. Second operand 37 states and 5918 transitions. [2022-01-19 00:37:36,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 522 transitions, 8175 flow [2022-01-19 00:37:36,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 522 transitions, 7684 flow, removed 182 selfloop flow, removed 19 redundant places. [2022-01-19 00:37:36,494 INFO L242 Difference]: Finished difference. Result has 508 places, 395 transitions, 4872 flow [2022-01-19 00:37:36,494 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4169, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=4872, PETRI_PLACES=508, PETRI_TRANSITIONS=395} [2022-01-19 00:37:36,494 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 321 predicate places. [2022-01-19 00:37:36,495 INFO L470 AbstractCegarLoop]: Abstraction has has 508 places, 395 transitions, 4872 flow [2022-01-19 00:37:36,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:36,495 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:36,495 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:36,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-01-19 00:37:36,495 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:36,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:36,495 INFO L85 PathProgramCache]: Analyzing trace with hash 957886028, now seen corresponding path program 33 times [2022-01-19 00:37:36,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:36,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306967830] [2022-01-19 00:37:36,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:36,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:36,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:36,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:36,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:36,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306967830] [2022-01-19 00:37:36,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306967830] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:36,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:36,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:36,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117606992] [2022-01-19 00:37:36,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:36,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:36,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:36,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:36,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:36,628 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:36,629 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 508 places, 395 transitions, 4872 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:36,629 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:36,629 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:36,629 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:37,837 INFO L129 PetriNetUnfolder]: 765/2652 cut-off events. [2022-01-19 00:37:37,837 INFO L130 PetriNetUnfolder]: For 47906/47930 co-relation queries the response was YES. [2022-01-19 00:37:37,864 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16310 conditions, 2652 events. 765/2652 cut-off events. For 47906/47930 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 19936 event pairs, 393 based on Foata normal form. 7/2562 useless extension candidates. Maximal degree in co-relation 16121. Up to 898 conditions per place. [2022-01-19 00:37:37,872 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 236 selfloop transitions, 90 changer transitions 64/531 dead transitions. [2022-01-19 00:37:37,872 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 531 transitions, 8581 flow [2022-01-19 00:37:37,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 00:37:37,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 00:37:37,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5763 transitions. [2022-01-19 00:37:37,875 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7623015873015873 [2022-01-19 00:37:37,875 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5763 transitions. [2022-01-19 00:37:37,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5763 transitions. [2022-01-19 00:37:37,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:37,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5763 transitions. [2022-01-19 00:37:37,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.08333333333334) internal successors, (5763), 36 states have internal predecessors, (5763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:37,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:37,882 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:37,882 INFO L186 Difference]: Start difference. First operand has 508 places, 395 transitions, 4872 flow. Second operand 36 states and 5763 transitions. [2022-01-19 00:37:37,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 531 transitions, 8581 flow [2022-01-19 00:37:38,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 501 places, 531 transitions, 8162 flow, removed 168 selfloop flow, removed 19 redundant places. [2022-01-19 00:37:38,087 INFO L242 Difference]: Finished difference. Result has 525 places, 404 transitions, 5233 flow [2022-01-19 00:37:38,088 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4688, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=5233, PETRI_PLACES=525, PETRI_TRANSITIONS=404} [2022-01-19 00:37:38,088 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 338 predicate places. [2022-01-19 00:37:38,088 INFO L470 AbstractCegarLoop]: Abstraction has has 525 places, 404 transitions, 5233 flow [2022-01-19 00:37:38,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:38,088 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:38,088 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:38,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-01-19 00:37:38,088 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:38,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:38,089 INFO L85 PathProgramCache]: Analyzing trace with hash -127130082, now seen corresponding path program 34 times [2022-01-19 00:37:38,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:38,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159168928] [2022-01-19 00:37:38,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:38,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:38,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:38,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:38,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159168928] [2022-01-19 00:37:38,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159168928] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:38,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:38,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:38,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852614411] [2022-01-19 00:37:38,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:38,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:38,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:38,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:38,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:38,203 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:38,204 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 404 transitions, 5233 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:38,204 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:38,204 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:38,204 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:39,327 INFO L129 PetriNetUnfolder]: 799/2737 cut-off events. [2022-01-19 00:37:39,328 INFO L130 PetriNetUnfolder]: For 53089/53113 co-relation queries the response was YES. [2022-01-19 00:37:39,366 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17357 conditions, 2737 events. 799/2737 cut-off events. For 53089/53113 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20893 event pairs, 369 based on Foata normal form. 7/2652 useless extension candidates. Maximal degree in co-relation 17161. Up to 900 conditions per place. [2022-01-19 00:37:39,375 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 253 selfloop transitions, 111 changer transitions 70/575 dead transitions. [2022-01-19 00:37:39,375 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 575 transitions, 9709 flow [2022-01-19 00:37:39,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:37:39,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:37:39,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6079 transitions. [2022-01-19 00:37:39,378 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617794486215539 [2022-01-19 00:37:39,378 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6079 transitions. [2022-01-19 00:37:39,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6079 transitions. [2022-01-19 00:37:39,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:39,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6079 transitions. [2022-01-19 00:37:39,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.97368421052633) internal successors, (6079), 38 states have internal predecessors, (6079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:39,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:39,386 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:39,386 INFO L186 Difference]: Start difference. First operand has 525 places, 404 transitions, 5233 flow. Second operand 38 states and 6079 transitions. [2022-01-19 00:37:39,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 575 transitions, 9709 flow [2022-01-19 00:37:39,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 575 transitions, 9226 flow, removed 151 selfloop flow, removed 19 redundant places. [2022-01-19 00:37:39,643 INFO L242 Difference]: Finished difference. Result has 546 places, 428 transitions, 5834 flow [2022-01-19 00:37:39,643 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4949, PETRI_DIFFERENCE_MINUEND_PLACES=484, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=5834, PETRI_PLACES=546, PETRI_TRANSITIONS=428} [2022-01-19 00:37:39,643 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 359 predicate places. [2022-01-19 00:37:39,644 INFO L470 AbstractCegarLoop]: Abstraction has has 546 places, 428 transitions, 5834 flow [2022-01-19 00:37:39,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:39,644 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:39,644 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:39,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-01-19 00:37:39,644 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:39,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:39,644 INFO L85 PathProgramCache]: Analyzing trace with hash 835890076, now seen corresponding path program 35 times [2022-01-19 00:37:39,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:39,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497375373] [2022-01-19 00:37:39,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:39,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:39,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:39,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:39,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:39,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497375373] [2022-01-19 00:37:39,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497375373] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:39,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:39,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:39,752 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008384312] [2022-01-19 00:37:39,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:39,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:39,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:39,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:39,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:39,753 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:39,754 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 546 places, 428 transitions, 5834 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:39,754 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:39,754 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:39,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:40,779 INFO L129 PetriNetUnfolder]: 802/2744 cut-off events. [2022-01-19 00:37:40,779 INFO L130 PetriNetUnfolder]: For 52872/52896 co-relation queries the response was YES. [2022-01-19 00:37:40,819 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17475 conditions, 2744 events. 802/2744 cut-off events. For 52872/52896 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20790 event pairs, 394 based on Foata normal form. 7/2654 useless extension candidates. Maximal degree in co-relation 17271. Up to 912 conditions per place. [2022-01-19 00:37:40,828 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 249 selfloop transitions, 106 changer transitions 55/551 dead transitions. [2022-01-19 00:37:40,828 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 550 places, 551 transitions, 9089 flow [2022-01-19 00:37:40,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:37:40,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:37:40,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4664 transitions. [2022-01-19 00:37:40,831 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658456486042693 [2022-01-19 00:37:40,831 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4664 transitions. [2022-01-19 00:37:40,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4664 transitions. [2022-01-19 00:37:40,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:40,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4664 transitions. [2022-01-19 00:37:40,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.82758620689654) internal successors, (4664), 29 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:40,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:40,837 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:40,837 INFO L186 Difference]: Start difference. First operand has 546 places, 428 transitions, 5834 flow. Second operand 29 states and 4664 transitions. [2022-01-19 00:37:40,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 550 places, 551 transitions, 9089 flow [2022-01-19 00:37:41,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 551 transitions, 8839 flow, removed 94 selfloop flow, removed 19 redundant places. [2022-01-19 00:37:41,112 INFO L242 Difference]: Finished difference. Result has 545 places, 440 transitions, 6215 flow [2022-01-19 00:37:41,112 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5647, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6215, PETRI_PLACES=545, PETRI_TRANSITIONS=440} [2022-01-19 00:37:41,112 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 358 predicate places. [2022-01-19 00:37:41,113 INFO L470 AbstractCegarLoop]: Abstraction has has 545 places, 440 transitions, 6215 flow [2022-01-19 00:37:41,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:41,113 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:41,113 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:41,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-01-19 00:37:41,113 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:41,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:41,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1351209000, now seen corresponding path program 36 times [2022-01-19 00:37:41,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:41,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637414861] [2022-01-19 00:37:41,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:41,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:41,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:41,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:41,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637414861] [2022-01-19 00:37:41,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637414861] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:41,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:41,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:41,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689470342] [2022-01-19 00:37:41,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:41,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:41,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:41,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:41,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:41,221 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:41,228 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 440 transitions, 6215 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:41,228 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:41,228 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:41,228 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:42,499 INFO L129 PetriNetUnfolder]: 821/2920 cut-off events. [2022-01-19 00:37:42,500 INFO L130 PetriNetUnfolder]: For 56594/56615 co-relation queries the response was YES. [2022-01-19 00:37:42,543 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18257 conditions, 2920 events. 821/2920 cut-off events. For 56594/56615 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 22951 event pairs, 370 based on Foata normal form. 7/2831 useless extension candidates. Maximal degree in co-relation 18056. Up to 912 conditions per place. [2022-01-19 00:37:42,553 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 281 selfloop transitions, 118 changer transitions 90/630 dead transitions. [2022-01-19 00:37:42,553 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 574 places, 630 transitions, 11404 flow [2022-01-19 00:37:42,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 00:37:42,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 00:37:42,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7025 transitions. [2022-01-19 00:37:42,556 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7602813852813853 [2022-01-19 00:37:42,556 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7025 transitions. [2022-01-19 00:37:42,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7025 transitions. [2022-01-19 00:37:42,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:42,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7025 transitions. [2022-01-19 00:37:42,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.6590909090909) internal successors, (7025), 44 states have internal predecessors, (7025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:42,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:42,565 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:42,565 INFO L186 Difference]: Start difference. First operand has 545 places, 440 transitions, 6215 flow. Second operand 44 states and 7025 transitions. [2022-01-19 00:37:42,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 574 places, 630 transitions, 11404 flow [2022-01-19 00:37:42,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 630 transitions, 11006 flow, removed 81 selfloop flow, removed 14 redundant places. [2022-01-19 00:37:42,859 INFO L242 Difference]: Finished difference. Result has 593 places, 462 transitions, 6878 flow [2022-01-19 00:37:42,860 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5965, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=440, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=6878, PETRI_PLACES=593, PETRI_TRANSITIONS=462} [2022-01-19 00:37:42,860 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 406 predicate places. [2022-01-19 00:37:42,860 INFO L470 AbstractCegarLoop]: Abstraction has has 593 places, 462 transitions, 6878 flow [2022-01-19 00:37:42,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:42,860 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:42,860 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:42,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-01-19 00:37:42,860 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:42,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:42,861 INFO L85 PathProgramCache]: Analyzing trace with hash -700806868, now seen corresponding path program 37 times [2022-01-19 00:37:42,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:42,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239822612] [2022-01-19 00:37:42,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:42,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:42,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:42,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:42,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239822612] [2022-01-19 00:37:42,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239822612] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:42,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:42,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:42,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026044014] [2022-01-19 00:37:42,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:42,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:42,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:42,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:42,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:42,973 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:42,974 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 462 transitions, 6878 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:42,974 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:42,974 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:42,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:44,136 INFO L129 PetriNetUnfolder]: 827/2892 cut-off events. [2022-01-19 00:37:44,136 INFO L130 PetriNetUnfolder]: For 62456/62477 co-relation queries the response was YES. [2022-01-19 00:37:44,184 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18931 conditions, 2892 events. 827/2892 cut-off events. For 62456/62477 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 22525 event pairs, 395 based on Foata normal form. 7/2795 useless extension candidates. Maximal degree in co-relation 18705. Up to 936 conditions per place. [2022-01-19 00:37:44,194 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 260 selfloop transitions, 129 changer transitions 57/587 dead transitions. [2022-01-19 00:37:44,194 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 587 transitions, 10557 flow [2022-01-19 00:37:44,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:37:44,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:37:44,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4823 transitions. [2022-01-19 00:37:44,196 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655555555555555 [2022-01-19 00:37:44,196 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4823 transitions. [2022-01-19 00:37:44,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4823 transitions. [2022-01-19 00:37:44,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:44,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4823 transitions. [2022-01-19 00:37:44,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.76666666666668) internal successors, (4823), 30 states have internal predecessors, (4823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:44,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:44,202 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:44,202 INFO L186 Difference]: Start difference. First operand has 593 places, 462 transitions, 6878 flow. Second operand 30 states and 4823 transitions. [2022-01-19 00:37:44,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 587 transitions, 10557 flow [2022-01-19 00:37:44,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 558 places, 587 transitions, 10021 flow, removed 189 selfloop flow, removed 33 redundant places. [2022-01-19 00:37:44,541 INFO L242 Difference]: Finished difference. Result has 572 places, 479 transitions, 7405 flow [2022-01-19 00:37:44,541 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6598, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7405, PETRI_PLACES=572, PETRI_TRANSITIONS=479} [2022-01-19 00:37:44,542 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 385 predicate places. [2022-01-19 00:37:44,542 INFO L470 AbstractCegarLoop]: Abstraction has has 572 places, 479 transitions, 7405 flow [2022-01-19 00:37:44,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:44,542 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:44,542 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:44,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-01-19 00:37:44,542 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:44,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:44,543 INFO L85 PathProgramCache]: Analyzing trace with hash 62022254, now seen corresponding path program 38 times [2022-01-19 00:37:44,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:44,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428566693] [2022-01-19 00:37:44,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:44,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:44,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:44,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:44,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428566693] [2022-01-19 00:37:44,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428566693] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:44,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:44,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:44,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173732303] [2022-01-19 00:37:44,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:44,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:44,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:44,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:44,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:44,652 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:44,652 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 479 transitions, 7405 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:44,652 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:44,652 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:44,653 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:45,811 INFO L129 PetriNetUnfolder]: 834/2924 cut-off events. [2022-01-19 00:37:45,811 INFO L130 PetriNetUnfolder]: For 60697/60718 co-relation queries the response was YES. [2022-01-19 00:37:45,855 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18876 conditions, 2924 events. 834/2924 cut-off events. For 60697/60718 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 22818 event pairs, 411 based on Foata normal form. 7/2828 useless extension candidates. Maximal degree in co-relation 18666. Up to 940 conditions per place. [2022-01-19 00:37:45,865 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 273 selfloop transitions, 136 changer transitions 60/610 dead transitions. [2022-01-19 00:37:45,866 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 610 transitions, 11180 flow [2022-01-19 00:37:45,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:37:45,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:37:45,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4819 transitions. [2022-01-19 00:37:45,868 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7649206349206349 [2022-01-19 00:37:45,868 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4819 transitions. [2022-01-19 00:37:45,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4819 transitions. [2022-01-19 00:37:45,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:45,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4819 transitions. [2022-01-19 00:37:45,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.63333333333333) internal successors, (4819), 30 states have internal predecessors, (4819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:45,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:45,874 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:45,874 INFO L186 Difference]: Start difference. First operand has 572 places, 479 transitions, 7405 flow. Second operand 30 states and 4819 transitions. [2022-01-19 00:37:45,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 610 transitions, 11180 flow [2022-01-19 00:37:46,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 610 transitions, 10853 flow, removed 106 selfloop flow, removed 11 redundant places. [2022-01-19 00:37:46,204 INFO L242 Difference]: Finished difference. Result has 590 places, 494 transitions, 7948 flow [2022-01-19 00:37:46,204 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7178, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7948, PETRI_PLACES=590, PETRI_TRANSITIONS=494} [2022-01-19 00:37:46,204 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 403 predicate places. [2022-01-19 00:37:46,205 INFO L470 AbstractCegarLoop]: Abstraction has has 590 places, 494 transitions, 7948 flow [2022-01-19 00:37:46,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:46,205 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:46,205 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:46,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-01-19 00:37:46,205 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:46,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:46,205 INFO L85 PathProgramCache]: Analyzing trace with hash -843806286, now seen corresponding path program 39 times [2022-01-19 00:37:46,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:46,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770262451] [2022-01-19 00:37:46,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:46,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:46,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:46,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:46,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770262451] [2022-01-19 00:37:46,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770262451] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:46,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:46,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:46,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875889313] [2022-01-19 00:37:46,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:46,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:46,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:46,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:46,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:46,312 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:46,312 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 494 transitions, 7948 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:46,312 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:46,312 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:46,313 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:47,700 INFO L129 PetriNetUnfolder]: 839/2959 cut-off events. [2022-01-19 00:37:47,701 INFO L130 PetriNetUnfolder]: For 62363/62384 co-relation queries the response was YES. [2022-01-19 00:37:47,748 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19136 conditions, 2959 events. 839/2959 cut-off events. For 62363/62384 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 23261 event pairs, 372 based on Foata normal form. 7/2868 useless extension candidates. Maximal degree in co-relation 18919. Up to 932 conditions per place. [2022-01-19 00:37:47,759 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 287 selfloop transitions, 141 changer transitions 82/651 dead transitions. [2022-01-19 00:37:47,759 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 651 transitions, 12242 flow [2022-01-19 00:37:47,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 00:37:47,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 00:37:47,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7335 transitions. [2022-01-19 00:37:47,763 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7593167701863354 [2022-01-19 00:37:47,763 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7335 transitions. [2022-01-19 00:37:47,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7335 transitions. [2022-01-19 00:37:47,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:47,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7335 transitions. [2022-01-19 00:37:47,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.45652173913044) internal successors, (7335), 46 states have internal predecessors, (7335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:47,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:47,772 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:47,772 INFO L186 Difference]: Start difference. First operand has 590 places, 494 transitions, 7948 flow. Second operand 46 states and 7335 transitions. [2022-01-19 00:37:47,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 651 transitions, 12242 flow [2022-01-19 00:37:48,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 651 transitions, 11966 flow, removed 77 selfloop flow, removed 13 redundant places. [2022-01-19 00:37:48,128 INFO L242 Difference]: Finished difference. Result has 640 places, 502 transitions, 8332 flow [2022-01-19 00:37:48,128 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7738, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=8332, PETRI_PLACES=640, PETRI_TRANSITIONS=502} [2022-01-19 00:37:48,129 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 453 predicate places. [2022-01-19 00:37:48,129 INFO L470 AbstractCegarLoop]: Abstraction has has 640 places, 502 transitions, 8332 flow [2022-01-19 00:37:48,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:48,129 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:48,129 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:48,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-01-19 00:37:48,129 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:48,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:48,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1801851900, now seen corresponding path program 40 times [2022-01-19 00:37:48,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:48,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487914616] [2022-01-19 00:37:48,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:48,130 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:48,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:48,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:48,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:48,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487914616] [2022-01-19 00:37:48,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487914616] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:48,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:48,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:48,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767982379] [2022-01-19 00:37:48,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:48,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:48,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:48,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:48,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:48,255 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:48,255 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 640 places, 502 transitions, 8332 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:48,255 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:48,255 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:48,256 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:49,616 INFO L129 PetriNetUnfolder]: 839/2965 cut-off events. [2022-01-19 00:37:49,616 INFO L130 PetriNetUnfolder]: For 68344/68365 co-relation queries the response was YES. [2022-01-19 00:37:49,666 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19609 conditions, 2965 events. 839/2965 cut-off events. For 68344/68365 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 23282 event pairs, 416 based on Foata normal form. 7/2870 useless extension candidates. Maximal degree in co-relation 19369. Up to 944 conditions per place. [2022-01-19 00:37:49,677 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 280 selfloop transitions, 142 changer transitions 71/634 dead transitions. [2022-01-19 00:37:49,677 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 644 places, 634 transitions, 12218 flow [2022-01-19 00:37:49,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:37:49,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:37:49,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6075 transitions. [2022-01-19 00:37:49,680 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612781954887218 [2022-01-19 00:37:49,680 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6075 transitions. [2022-01-19 00:37:49,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6075 transitions. [2022-01-19 00:37:49,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:49,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6075 transitions. [2022-01-19 00:37:49,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.8684210526316) internal successors, (6075), 38 states have internal predecessors, (6075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:49,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:49,687 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:49,687 INFO L186 Difference]: Start difference. First operand has 640 places, 502 transitions, 8332 flow. Second operand 38 states and 6075 transitions. [2022-01-19 00:37:49,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 644 places, 634 transitions, 12218 flow [2022-01-19 00:37:50,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 613 places, 634 transitions, 11934 flow, removed 88 selfloop flow, removed 31 redundant places. [2022-01-19 00:37:50,084 INFO L242 Difference]: Finished difference. Result has 636 places, 510 transitions, 8751 flow [2022-01-19 00:37:50,085 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8139, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8751, PETRI_PLACES=636, PETRI_TRANSITIONS=510} [2022-01-19 00:37:50,085 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 449 predicate places. [2022-01-19 00:37:50,089 INFO L470 AbstractCegarLoop]: Abstraction has has 636 places, 510 transitions, 8751 flow [2022-01-19 00:37:50,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:50,089 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:50,089 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:50,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-01-19 00:37:50,089 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:50,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:50,090 INFO L85 PathProgramCache]: Analyzing trace with hash 571628762, now seen corresponding path program 41 times [2022-01-19 00:37:50,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:50,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520445734] [2022-01-19 00:37:50,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:50,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:50,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:50,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:50,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520445734] [2022-01-19 00:37:50,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520445734] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:50,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:50,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:50,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143642697] [2022-01-19 00:37:50,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:50,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:50,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:50,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:50,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:50,213 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:50,214 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 636 places, 510 transitions, 8751 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:50,214 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:50,214 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:50,214 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:51,398 INFO L129 PetriNetUnfolder]: 816/2798 cut-off events. [2022-01-19 00:37:51,398 INFO L130 PetriNetUnfolder]: For 65271/65295 co-relation queries the response was YES. [2022-01-19 00:37:51,447 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18914 conditions, 2798 events. 816/2798 cut-off events. For 65271/65295 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 21588 event pairs, 397 based on Foata normal form. 7/2704 useless extension candidates. Maximal degree in co-relation 18679. Up to 942 conditions per place. [2022-01-19 00:37:51,457 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 271 selfloop transitions, 125 changer transitions 62/599 dead transitions. [2022-01-19 00:37:51,458 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 599 transitions, 11408 flow [2022-01-19 00:37:51,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 00:37:51,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 00:37:51,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4494 transitions. [2022-01-19 00:37:51,460 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2022-01-19 00:37:51,460 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4494 transitions. [2022-01-19 00:37:51,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4494 transitions. [2022-01-19 00:37:51,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:51,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4494 transitions. [2022-01-19 00:37:51,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.5) internal successors, (4494), 28 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:51,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:51,465 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:51,465 INFO L186 Difference]: Start difference. First operand has 636 places, 510 transitions, 8751 flow. Second operand 28 states and 4494 transitions. [2022-01-19 00:37:51,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 599 transitions, 11408 flow [2022-01-19 00:37:51,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 599 transitions, 11138 flow, removed 66 selfloop flow, removed 22 redundant places. [2022-01-19 00:37:51,870 INFO L242 Difference]: Finished difference. Result has 626 places, 486 transitions, 8139 flow [2022-01-19 00:37:51,870 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8529, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=8139, PETRI_PLACES=626, PETRI_TRANSITIONS=486} [2022-01-19 00:37:51,870 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 439 predicate places. [2022-01-19 00:37:51,870 INFO L470 AbstractCegarLoop]: Abstraction has has 626 places, 486 transitions, 8139 flow [2022-01-19 00:37:51,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:51,871 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:51,871 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:51,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-01-19 00:37:51,871 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:51,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:51,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1369805108, now seen corresponding path program 42 times [2022-01-19 00:37:51,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:51,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375272543] [2022-01-19 00:37:51,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:51,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:51,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:51,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:51,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:51,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375272543] [2022-01-19 00:37:51,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375272543] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:51,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:51,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:51,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539772739] [2022-01-19 00:37:51,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:51,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:51,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:51,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:51,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:51,987 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:51,988 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 486 transitions, 8139 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:51,988 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:51,988 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:51,988 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:53,112 INFO L129 PetriNetUnfolder]: 810/2790 cut-off events. [2022-01-19 00:37:53,112 INFO L130 PetriNetUnfolder]: For 65006/65030 co-relation queries the response was YES. [2022-01-19 00:37:53,157 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18656 conditions, 2790 events. 810/2790 cut-off events. For 65006/65030 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 21411 event pairs, 382 based on Foata normal form. 7/2700 useless extension candidates. Maximal degree in co-relation 18430. Up to 938 conditions per place. [2022-01-19 00:37:53,166 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 268 selfloop transitions, 137 changer transitions 61/607 dead transitions. [2022-01-19 00:37:53,166 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 607 transitions, 11598 flow [2022-01-19 00:37:53,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:37:53,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:37:53,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4816 transitions. [2022-01-19 00:37:53,169 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7644444444444445 [2022-01-19 00:37:53,169 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4816 transitions. [2022-01-19 00:37:53,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4816 transitions. [2022-01-19 00:37:53,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:53,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4816 transitions. [2022-01-19 00:37:53,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.53333333333333) internal successors, (4816), 30 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:53,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:53,174 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:53,174 INFO L186 Difference]: Start difference. First operand has 626 places, 486 transitions, 8139 flow. Second operand 30 states and 4816 transitions. [2022-01-19 00:37:53,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 607 transitions, 11598 flow [2022-01-19 00:37:53,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 591 places, 607 transitions, 10942 flow, removed 36 selfloop flow, removed 31 redundant places. [2022-01-19 00:37:53,532 INFO L242 Difference]: Finished difference. Result has 604 places, 492 transitions, 8074 flow [2022-01-19 00:37:53,532 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7579, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=8074, PETRI_PLACES=604, PETRI_TRANSITIONS=492} [2022-01-19 00:37:53,533 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 417 predicate places. [2022-01-19 00:37:53,533 INFO L470 AbstractCegarLoop]: Abstraction has has 604 places, 492 transitions, 8074 flow [2022-01-19 00:37:53,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:53,533 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:53,533 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:53,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-01-19 00:37:53,533 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:53,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:53,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1122114580, now seen corresponding path program 43 times [2022-01-19 00:37:53,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:53,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824397356] [2022-01-19 00:37:53,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:53,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:53,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:53,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:53,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824397356] [2022-01-19 00:37:53,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824397356] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:53,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:53,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:53,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957950658] [2022-01-19 00:37:53,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:53,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:53,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:53,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:53,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:53,665 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:53,666 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 492 transitions, 8074 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:53,666 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:53,666 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:53,666 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:54,839 INFO L129 PetriNetUnfolder]: 816/2882 cut-off events. [2022-01-19 00:37:54,840 INFO L130 PetriNetUnfolder]: For 62522/62543 co-relation queries the response was YES. [2022-01-19 00:37:54,886 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18751 conditions, 2882 events. 816/2882 cut-off events. For 62522/62543 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 22459 event pairs, 385 based on Foata normal form. 7/2786 useless extension candidates. Maximal degree in co-relation 18530. Up to 942 conditions per place. [2022-01-19 00:37:54,896 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 273 selfloop transitions, 142 changer transitions 56/612 dead transitions. [2022-01-19 00:37:54,897 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 612 transitions, 11604 flow [2022-01-19 00:37:54,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:37:54,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:37:54,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4662 transitions. [2022-01-19 00:37:54,899 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655172413793103 [2022-01-19 00:37:54,899 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4662 transitions. [2022-01-19 00:37:54,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4662 transitions. [2022-01-19 00:37:54,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:54,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4662 transitions. [2022-01-19 00:37:54,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.75862068965517) internal successors, (4662), 29 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:54,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:54,905 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:54,905 INFO L186 Difference]: Start difference. First operand has 604 places, 492 transitions, 8074 flow. Second operand 29 states and 4662 transitions. [2022-01-19 00:37:54,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 612 transitions, 11604 flow [2022-01-19 00:37:55,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 612 transitions, 11361 flow, removed 63 selfloop flow, removed 13 redundant places. [2022-01-19 00:37:55,260 INFO L242 Difference]: Finished difference. Result has 618 places, 504 transitions, 8570 flow [2022-01-19 00:37:55,260 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7878, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=8570, PETRI_PLACES=618, PETRI_TRANSITIONS=504} [2022-01-19 00:37:55,260 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 431 predicate places. [2022-01-19 00:37:55,261 INFO L470 AbstractCegarLoop]: Abstraction has has 618 places, 504 transitions, 8570 flow [2022-01-19 00:37:55,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:55,261 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:55,261 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:55,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-01-19 00:37:55,261 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:55,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:55,261 INFO L85 PathProgramCache]: Analyzing trace with hash -745564998, now seen corresponding path program 44 times [2022-01-19 00:37:55,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:55,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106261165] [2022-01-19 00:37:55,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:55,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:55,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:55,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:55,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106261165] [2022-01-19 00:37:55,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106261165] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:55,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:55,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:55,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659204262] [2022-01-19 00:37:55,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:55,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:55,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:55,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:55,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:55,390 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:55,391 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 504 transitions, 8570 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:55,391 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:55,391 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:55,391 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:56,650 INFO L129 PetriNetUnfolder]: 816/2919 cut-off events. [2022-01-19 00:37:56,650 INFO L130 PetriNetUnfolder]: For 65829/65850 co-relation queries the response was YES. [2022-01-19 00:37:56,695 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18953 conditions, 2919 events. 816/2919 cut-off events. For 65829/65850 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 22882 event pairs, 416 based on Foata normal form. 7/2823 useless extension candidates. Maximal degree in co-relation 18728. Up to 938 conditions per place. [2022-01-19 00:37:56,705 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 277 selfloop transitions, 131 changer transitions 71/620 dead transitions. [2022-01-19 00:37:56,705 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 640 places, 620 transitions, 11986 flow [2022-01-19 00:37:56,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 00:37:56,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 00:37:56,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5918 transitions. [2022-01-19 00:37:56,708 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616473616473617 [2022-01-19 00:37:56,708 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5918 transitions. [2022-01-19 00:37:56,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5918 transitions. [2022-01-19 00:37:56,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:56,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5918 transitions. [2022-01-19 00:37:56,711 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 159.94594594594594) internal successors, (5918), 37 states have internal predecessors, (5918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:56,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:56,715 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:56,715 INFO L186 Difference]: Start difference. First operand has 618 places, 504 transitions, 8570 flow. Second operand 37 states and 5918 transitions. [2022-01-19 00:37:56,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 640 places, 620 transitions, 11986 flow [2022-01-19 00:37:57,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 627 places, 620 transitions, 11665 flow, removed 81 selfloop flow, removed 13 redundant places. [2022-01-19 00:37:57,089 INFO L242 Difference]: Finished difference. Result has 646 places, 505 transitions, 8655 flow [2022-01-19 00:37:57,089 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8292, PETRI_DIFFERENCE_MINUEND_PLACES=591, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=8655, PETRI_PLACES=646, PETRI_TRANSITIONS=505} [2022-01-19 00:37:57,089 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 459 predicate places. [2022-01-19 00:37:57,089 INFO L470 AbstractCegarLoop]: Abstraction has has 646 places, 505 transitions, 8655 flow [2022-01-19 00:37:57,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:57,090 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:57,090 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:57,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-01-19 00:37:57,090 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:57,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:57,090 INFO L85 PathProgramCache]: Analyzing trace with hash 608513532, now seen corresponding path program 45 times [2022-01-19 00:37:57,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:57,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795240808] [2022-01-19 00:37:57,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:57,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:57,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:57,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:57,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795240808] [2022-01-19 00:37:57,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795240808] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:57,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:57,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:57,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574395192] [2022-01-19 00:37:57,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:57,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:57,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:57,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:57,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:57,237 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:57,237 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 646 places, 505 transitions, 8655 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:57,237 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:57,237 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:57,237 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:58,409 INFO L129 PetriNetUnfolder]: 801/2861 cut-off events. [2022-01-19 00:37:58,409 INFO L130 PetriNetUnfolder]: For 66232/66253 co-relation queries the response was YES. [2022-01-19 00:37:58,459 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18747 conditions, 2861 events. 801/2861 cut-off events. For 66232/66253 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 22404 event pairs, 391 based on Foata normal form. 7/2765 useless extension candidates. Maximal degree in co-relation 18511. Up to 946 conditions per place. [2022-01-19 00:37:58,469 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 274 selfloop transitions, 120 changer transitions 60/595 dead transitions. [2022-01-19 00:37:58,469 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 651 places, 595 transitions, 11432 flow [2022-01-19 00:37:58,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:37:58,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:37:58,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4655 transitions. [2022-01-19 00:37:58,471 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2022-01-19 00:37:58,471 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4655 transitions. [2022-01-19 00:37:58,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4655 transitions. [2022-01-19 00:37:58,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:58,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4655 transitions. [2022-01-19 00:37:58,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.51724137931035) internal successors, (4655), 29 states have internal predecessors, (4655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:58,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:58,477 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:58,477 INFO L186 Difference]: Start difference. First operand has 646 places, 505 transitions, 8655 flow. Second operand 29 states and 4655 transitions. [2022-01-19 00:37:58,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 651 places, 595 transitions, 11432 flow [2022-01-19 00:37:58,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 630 places, 595 transitions, 11060 flow, removed 94 selfloop flow, removed 21 redundant places. [2022-01-19 00:37:58,867 INFO L242 Difference]: Finished difference. Result has 641 places, 492 transitions, 8314 flow [2022-01-19 00:37:58,868 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8405, PETRI_DIFFERENCE_MINUEND_PLACES=602, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=8314, PETRI_PLACES=641, PETRI_TRANSITIONS=492} [2022-01-19 00:37:58,868 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 454 predicate places. [2022-01-19 00:37:58,868 INFO L470 AbstractCegarLoop]: Abstraction has has 641 places, 492 transitions, 8314 flow [2022-01-19 00:37:58,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:58,869 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:58,869 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:58,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-01-19 00:37:58,869 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:58,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:58,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1167543244, now seen corresponding path program 46 times [2022-01-19 00:37:58,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:58,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631853961] [2022-01-19 00:37:58,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:58,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:58,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:58,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:58,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:58,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631853961] [2022-01-19 00:37:58,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631853961] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:58,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:58,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:37:58,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993046678] [2022-01-19 00:37:58,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:58,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:37:58,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:58,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:37:58,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:37:58,996 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:37:58,996 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 641 places, 492 transitions, 8314 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:58,996 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:58,996 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:37:58,997 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:00,154 INFO L129 PetriNetUnfolder]: 809/2812 cut-off events. [2022-01-19 00:38:00,154 INFO L130 PetriNetUnfolder]: For 66775/66799 co-relation queries the response was YES. [2022-01-19 00:38:00,200 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18867 conditions, 2812 events. 809/2812 cut-off events. For 66775/66799 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 21839 event pairs, 373 based on Foata normal form. 7/2719 useless extension candidates. Maximal degree in co-relation 18637. Up to 948 conditions per place. [2022-01-19 00:38:00,209 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 281 selfloop transitions, 141 changer transitions 61/624 dead transitions. [2022-01-19 00:38:00,210 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 644 places, 624 transitions, 12328 flow [2022-01-19 00:38:00,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:38:00,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:38:00,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4817 transitions. [2022-01-19 00:38:00,212 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646031746031746 [2022-01-19 00:38:00,212 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4817 transitions. [2022-01-19 00:38:00,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4817 transitions. [2022-01-19 00:38:00,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:00,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4817 transitions. [2022-01-19 00:38:00,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.56666666666666) internal successors, (4817), 30 states have internal predecessors, (4817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:00,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:00,218 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:00,218 INFO L186 Difference]: Start difference. First operand has 641 places, 492 transitions, 8314 flow. Second operand 30 states and 4817 transitions. [2022-01-19 00:38:00,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 644 places, 624 transitions, 12328 flow [2022-01-19 00:38:00,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 624 transitions, 11805 flow, removed 41 selfloop flow, removed 29 redundant places. [2022-01-19 00:38:00,606 INFO L242 Difference]: Finished difference. Result has 628 places, 509 transitions, 8757 flow [2022-01-19 00:38:00,607 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7914, PETRI_DIFFERENCE_MINUEND_PLACES=586, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=8757, PETRI_PLACES=628, PETRI_TRANSITIONS=509} [2022-01-19 00:38:00,607 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 441 predicate places. [2022-01-19 00:38:00,607 INFO L470 AbstractCegarLoop]: Abstraction has has 628 places, 509 transitions, 8757 flow [2022-01-19 00:38:00,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:00,607 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:00,607 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:00,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-01-19 00:38:00,607 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:00,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:00,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1913108916, now seen corresponding path program 47 times [2022-01-19 00:38:00,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:00,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529305551] [2022-01-19 00:38:00,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:00,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:00,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:00,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:00,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:00,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529305551] [2022-01-19 00:38:00,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529305551] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:00,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:00,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:00,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410956245] [2022-01-19 00:38:00,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:00,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:00,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:00,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:00,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:00,728 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:00,728 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 628 places, 509 transitions, 8757 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:00,729 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:00,729 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:00,729 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:02,117 INFO L129 PetriNetUnfolder]: 815/2940 cut-off events. [2022-01-19 00:38:02,117 INFO L130 PetriNetUnfolder]: For 67056/67077 co-relation queries the response was YES. [2022-01-19 00:38:02,165 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19083 conditions, 2940 events. 815/2940 cut-off events. For 67056/67077 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 23318 event pairs, 373 based on Foata normal form. 7/2851 useless extension candidates. Maximal degree in co-relation 18856. Up to 924 conditions per place. [2022-01-19 00:38:02,176 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 306 selfloop transitions, 127 changer transitions 81/655 dead transitions. [2022-01-19 00:38:02,176 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 657 places, 655 transitions, 13114 flow [2022-01-19 00:38:02,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 00:38:02,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 00:38:02,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7186 transitions. [2022-01-19 00:38:02,179 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7604232804232804 [2022-01-19 00:38:02,179 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7186 transitions. [2022-01-19 00:38:02,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7186 transitions. [2022-01-19 00:38:02,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:02,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7186 transitions. [2022-01-19 00:38:02,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.6888888888889) internal successors, (7186), 45 states have internal predecessors, (7186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:02,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:02,188 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:02,188 INFO L186 Difference]: Start difference. First operand has 628 places, 509 transitions, 8757 flow. Second operand 45 states and 7186 transitions. [2022-01-19 00:38:02,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 657 places, 655 transitions, 13114 flow [2022-01-19 00:38:02,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 641 places, 655 transitions, 12721 flow, removed 86 selfloop flow, removed 16 redundant places. [2022-01-19 00:38:02,568 INFO L242 Difference]: Finished difference. Result has 674 places, 513 transitions, 8966 flow [2022-01-19 00:38:02,568 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8433, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=8966, PETRI_PLACES=674, PETRI_TRANSITIONS=513} [2022-01-19 00:38:02,568 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 487 predicate places. [2022-01-19 00:38:02,568 INFO L470 AbstractCegarLoop]: Abstraction has has 674 places, 513 transitions, 8966 flow [2022-01-19 00:38:02,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:02,569 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:02,569 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:02,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-01-19 00:38:02,569 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:02,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:02,569 INFO L85 PathProgramCache]: Analyzing trace with hash 2129658, now seen corresponding path program 48 times [2022-01-19 00:38:02,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:02,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316535197] [2022-01-19 00:38:02,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:02,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:02,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:02,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:02,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316535197] [2022-01-19 00:38:02,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316535197] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:02,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:02,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:02,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267443995] [2022-01-19 00:38:02,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:02,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:02,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:02,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:02,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:02,680 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:02,681 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 674 places, 513 transitions, 8966 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:02,681 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:02,681 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:02,681 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:03,829 INFO L129 PetriNetUnfolder]: 779/2793 cut-off events. [2022-01-19 00:38:03,829 INFO L130 PetriNetUnfolder]: For 65646/65667 co-relation queries the response was YES. [2022-01-19 00:38:03,877 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18235 conditions, 2793 events. 779/2793 cut-off events. For 65646/65667 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 21657 event pairs, 370 based on Foata normal form. 7/2701 useless extension candidates. Maximal degree in co-relation 17987. Up to 932 conditions per place. [2022-01-19 00:38:03,886 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 268 selfloop transitions, 113 changer transitions 64/586 dead transitions. [2022-01-19 00:38:03,887 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 586 transitions, 11220 flow [2022-01-19 00:38:03,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 00:38:03,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 00:38:03,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4333 transitions. [2022-01-19 00:38:03,889 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7641975308641975 [2022-01-19 00:38:03,889 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4333 transitions. [2022-01-19 00:38:03,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4333 transitions. [2022-01-19 00:38:03,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:03,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4333 transitions. [2022-01-19 00:38:03,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.4814814814815) internal successors, (4333), 27 states have internal predecessors, (4333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:03,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:03,894 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:03,894 INFO L186 Difference]: Start difference. First operand has 674 places, 513 transitions, 8966 flow. Second operand 27 states and 4333 transitions. [2022-01-19 00:38:03,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 586 transitions, 11220 flow [2022-01-19 00:38:04,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 635 places, 586 transitions, 10815 flow, removed 128 selfloop flow, removed 33 redundant places. [2022-01-19 00:38:04,322 INFO L242 Difference]: Finished difference. Result has 642 places, 476 transitions, 7901 flow [2022-01-19 00:38:04,323 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8646, PETRI_DIFFERENCE_MINUEND_PLACES=609, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=7901, PETRI_PLACES=642, PETRI_TRANSITIONS=476} [2022-01-19 00:38:04,323 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 455 predicate places. [2022-01-19 00:38:04,323 INFO L470 AbstractCegarLoop]: Abstraction has has 642 places, 476 transitions, 7901 flow [2022-01-19 00:38:04,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:04,324 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:04,324 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:04,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-01-19 00:38:04,324 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:04,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:04,324 INFO L85 PathProgramCache]: Analyzing trace with hash -694843082, now seen corresponding path program 49 times [2022-01-19 00:38:04,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:04,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162366429] [2022-01-19 00:38:04,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:04,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:04,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:04,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:04,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:04,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162366429] [2022-01-19 00:38:04,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162366429] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:04,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:04,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:04,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306224032] [2022-01-19 00:38:04,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:04,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:04,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:04,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:04,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:04,443 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:04,444 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 642 places, 476 transitions, 7901 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:04,444 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:04,444 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:04,444 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:05,551 INFO L129 PetriNetUnfolder]: 780/2789 cut-off events. [2022-01-19 00:38:05,551 INFO L130 PetriNetUnfolder]: For 63789/63810 co-relation queries the response was YES. [2022-01-19 00:38:05,597 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17930 conditions, 2789 events. 780/2789 cut-off events. For 63789/63810 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 21627 event pairs, 367 based on Foata normal form. 7/2697 useless extension candidates. Maximal degree in co-relation 17705. Up to 934 conditions per place. [2022-01-19 00:38:05,607 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 257 selfloop transitions, 138 changer transitions 59/595 dead transitions. [2022-01-19 00:38:05,607 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 628 places, 595 transitions, 11423 flow [2022-01-19 00:38:05,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 00:38:05,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 00:38:05,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4500 transitions. [2022-01-19 00:38:05,609 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7653061224489796 [2022-01-19 00:38:05,609 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4500 transitions. [2022-01-19 00:38:05,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4500 transitions. [2022-01-19 00:38:05,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:05,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4500 transitions. [2022-01-19 00:38:05,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.71428571428572) internal successors, (4500), 28 states have internal predecessors, (4500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:05,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:05,615 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:05,615 INFO L186 Difference]: Start difference. First operand has 642 places, 476 transitions, 7901 flow. Second operand 28 states and 4500 transitions. [2022-01-19 00:38:05,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 628 places, 595 transitions, 11423 flow [2022-01-19 00:38:05,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 591 places, 595 transitions, 10527 flow, removed 45 selfloop flow, removed 37 redundant places. [2022-01-19 00:38:05,955 INFO L242 Difference]: Finished difference. Result has 603 places, 484 transitions, 7746 flow [2022-01-19 00:38:05,956 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7223, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=343, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=7746, PETRI_PLACES=603, PETRI_TRANSITIONS=484} [2022-01-19 00:38:05,956 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 416 predicate places. [2022-01-19 00:38:05,956 INFO L470 AbstractCegarLoop]: Abstraction has has 603 places, 484 transitions, 7746 flow [2022-01-19 00:38:05,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:05,957 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:05,957 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:05,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-01-19 00:38:05,957 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:05,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:05,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1403431284, now seen corresponding path program 50 times [2022-01-19 00:38:05,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:05,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798165804] [2022-01-19 00:38:05,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:05,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:06,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:06,082 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:06,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798165804] [2022-01-19 00:38:06,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798165804] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:06,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:06,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:06,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573917577] [2022-01-19 00:38:06,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:06,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:06,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:06,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:06,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:06,083 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:06,084 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 484 transitions, 7746 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:06,084 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:06,084 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:06,084 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:07,358 INFO L129 PetriNetUnfolder]: 809/2824 cut-off events. [2022-01-19 00:38:07,358 INFO L130 PetriNetUnfolder]: For 60327/60351 co-relation queries the response was YES. [2022-01-19 00:38:07,400 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18269 conditions, 2824 events. 809/2824 cut-off events. For 60327/60351 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 21962 event pairs, 381 based on Foata normal form. 7/2733 useless extension candidates. Maximal degree in co-relation 18055. Up to 938 conditions per place. [2022-01-19 00:38:07,410 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 290 selfloop transitions, 128 changer transitions 67/626 dead transitions. [2022-01-19 00:38:07,410 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 626 transitions, 11851 flow [2022-01-19 00:38:07,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:38:07,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:38:07,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6082 transitions. [2022-01-19 00:38:07,413 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7621553884711779 [2022-01-19 00:38:07,413 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6082 transitions. [2022-01-19 00:38:07,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6082 transitions. [2022-01-19 00:38:07,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:07,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6082 transitions. [2022-01-19 00:38:07,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.05263157894737) internal successors, (6082), 38 states have internal predecessors, (6082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:07,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:07,420 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:07,420 INFO L186 Difference]: Start difference. First operand has 603 places, 484 transitions, 7746 flow. Second operand 38 states and 6082 transitions. [2022-01-19 00:38:07,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 626 transitions, 11851 flow [2022-01-19 00:38:07,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 612 places, 626 transitions, 11442 flow, removed 63 selfloop flow, removed 15 redundant places. [2022-01-19 00:38:07,751 INFO L242 Difference]: Finished difference. Result has 636 places, 503 transitions, 8315 flow [2022-01-19 00:38:07,751 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7443, PETRI_DIFFERENCE_MINUEND_PLACES=575, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8315, PETRI_PLACES=636, PETRI_TRANSITIONS=503} [2022-01-19 00:38:07,751 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 449 predicate places. [2022-01-19 00:38:07,751 INFO L470 AbstractCegarLoop]: Abstraction has has 636 places, 503 transitions, 8315 flow [2022-01-19 00:38:07,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:07,752 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:07,752 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:07,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-01-19 00:38:07,752 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:07,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:07,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1968117948, now seen corresponding path program 51 times [2022-01-19 00:38:07,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:07,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707147403] [2022-01-19 00:38:07,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:07,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:07,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:07,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:07,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707147403] [2022-01-19 00:38:07,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707147403] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:07,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:07,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:07,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090785878] [2022-01-19 00:38:07,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:07,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:07,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:07,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:07,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:07,868 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:07,869 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 636 places, 503 transitions, 8315 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:07,869 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:07,869 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:07,869 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:09,031 INFO L129 PetriNetUnfolder]: 779/2778 cut-off events. [2022-01-19 00:38:09,031 INFO L130 PetriNetUnfolder]: For 59813/59834 co-relation queries the response was YES. [2022-01-19 00:38:09,077 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17616 conditions, 2778 events. 779/2778 cut-off events. For 59813/59834 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 21483 event pairs, 376 based on Foata normal form. 7/2683 useless extension candidates. Maximal degree in co-relation 17387. Up to 938 conditions per place. [2022-01-19 00:38:09,088 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 268 selfloop transitions, 98 changer transitions 61/568 dead transitions. [2022-01-19 00:38:09,088 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 641 places, 568 transitions, 10237 flow [2022-01-19 00:38:09,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:38:09,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:38:09,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4801 transitions. [2022-01-19 00:38:09,090 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7620634920634921 [2022-01-19 00:38:09,090 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4801 transitions. [2022-01-19 00:38:09,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4801 transitions. [2022-01-19 00:38:09,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:09,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4801 transitions. [2022-01-19 00:38:09,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.03333333333333) internal successors, (4801), 30 states have internal predecessors, (4801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:09,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:09,096 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:09,096 INFO L186 Difference]: Start difference. First operand has 636 places, 503 transitions, 8315 flow. Second operand 30 states and 4801 transitions. [2022-01-19 00:38:09,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 641 places, 568 transitions, 10237 flow [2022-01-19 00:38:09,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 621 places, 568 transitions, 10004 flow, removed 66 selfloop flow, removed 20 redundant places. [2022-01-19 00:38:09,448 INFO L242 Difference]: Finished difference. Result has 630 places, 467 transitions, 7413 flow [2022-01-19 00:38:09,448 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8109, PETRI_DIFFERENCE_MINUEND_PLACES=592, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7413, PETRI_PLACES=630, PETRI_TRANSITIONS=467} [2022-01-19 00:38:09,448 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 443 predicate places. [2022-01-19 00:38:09,448 INFO L470 AbstractCegarLoop]: Abstraction has has 630 places, 467 transitions, 7413 flow [2022-01-19 00:38:09,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:09,449 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:09,449 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:09,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-01-19 00:38:09,449 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:09,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:09,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1835249110, now seen corresponding path program 52 times [2022-01-19 00:38:09,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:09,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883215302] [2022-01-19 00:38:09,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:09,449 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:09,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:09,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:09,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:09,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883215302] [2022-01-19 00:38:09,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883215302] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:09,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:09,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:09,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349476113] [2022-01-19 00:38:09,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:09,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:09,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:09,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:09,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:09,560 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:09,561 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 630 places, 467 transitions, 7413 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:09,561 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:09,561 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:09,561 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:10,784 INFO L129 PetriNetUnfolder]: 778/2799 cut-off events. [2022-01-19 00:38:10,784 INFO L130 PetriNetUnfolder]: For 60349/60370 co-relation queries the response was YES. [2022-01-19 00:38:10,826 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17551 conditions, 2799 events. 778/2799 cut-off events. For 60349/60370 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 21751 event pairs, 367 based on Foata normal form. 7/2709 useless extension candidates. Maximal degree in co-relation 17330. Up to 920 conditions per place. [2022-01-19 00:38:10,835 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 267 selfloop transitions, 117 changer transitions 68/593 dead transitions. [2022-01-19 00:38:10,835 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 623 places, 593 transitions, 11052 flow [2022-01-19 00:38:10,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 00:38:10,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 00:38:10,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5923 transitions. [2022-01-19 00:38:10,838 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7622908622908623 [2022-01-19 00:38:10,838 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5923 transitions. [2022-01-19 00:38:10,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5923 transitions. [2022-01-19 00:38:10,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:10,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5923 transitions. [2022-01-19 00:38:10,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.0810810810811) internal successors, (5923), 37 states have internal predecessors, (5923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:10,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:10,845 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:10,845 INFO L186 Difference]: Start difference. First operand has 630 places, 467 transitions, 7413 flow. Second operand 37 states and 5923 transitions. [2022-01-19 00:38:10,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 623 places, 593 transitions, 11052 flow [2022-01-19 00:38:11,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 593 transitions, 10272 flow, removed 69 selfloop flow, removed 36 redundant places. [2022-01-19 00:38:11,149 INFO L242 Difference]: Finished difference. Result has 611 places, 471 transitions, 7275 flow [2022-01-19 00:38:11,150 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6811, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=7275, PETRI_PLACES=611, PETRI_TRANSITIONS=471} [2022-01-19 00:38:11,150 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 424 predicate places. [2022-01-19 00:38:11,150 INFO L470 AbstractCegarLoop]: Abstraction has has 611 places, 471 transitions, 7275 flow [2022-01-19 00:38:11,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:11,151 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:11,151 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:11,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-01-19 00:38:11,151 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:11,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:11,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1627569222, now seen corresponding path program 53 times [2022-01-19 00:38:11,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:11,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859650903] [2022-01-19 00:38:11,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:11,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:11,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:11,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:11,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:11,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859650903] [2022-01-19 00:38:11,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859650903] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:11,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:11,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:11,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147321486] [2022-01-19 00:38:11,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:11,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:11,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:11,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:11,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:11,268 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:11,269 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 471 transitions, 7275 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:11,269 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:11,269 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:11,269 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:12,347 INFO L129 PetriNetUnfolder]: 769/2693 cut-off events. [2022-01-19 00:38:12,347 INFO L130 PetriNetUnfolder]: For 54266/54290 co-relation queries the response was YES. [2022-01-19 00:38:12,391 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16994 conditions, 2693 events. 769/2693 cut-off events. For 54266/54290 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20545 event pairs, 379 based on Foata normal form. 7/2604 useless extension candidates. Maximal degree in co-relation 16770. Up to 931 conditions per place. [2022-01-19 00:38:12,399 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 264 selfloop transitions, 115 changer transitions 58/578 dead transitions. [2022-01-19 00:38:12,400 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 617 places, 578 transitions, 10352 flow [2022-01-19 00:38:12,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:38:12,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:38:12,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4819 transitions. [2022-01-19 00:38:12,403 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7649206349206349 [2022-01-19 00:38:12,404 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4819 transitions. [2022-01-19 00:38:12,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4819 transitions. [2022-01-19 00:38:12,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:12,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4819 transitions. [2022-01-19 00:38:12,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.63333333333333) internal successors, (4819), 30 states have internal predecessors, (4819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:12,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:12,409 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:12,409 INFO L186 Difference]: Start difference. First operand has 611 places, 471 transitions, 7275 flow. Second operand 30 states and 4819 transitions. [2022-01-19 00:38:12,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 617 places, 578 transitions, 10352 flow [2022-01-19 00:38:12,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 578 transitions, 10015 flow, removed 94 selfloop flow, removed 23 redundant places. [2022-01-19 00:38:12,706 INFO L242 Difference]: Finished difference. Result has 608 places, 476 transitions, 7470 flow [2022-01-19 00:38:12,707 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7042, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7470, PETRI_PLACES=608, PETRI_TRANSITIONS=476} [2022-01-19 00:38:12,707 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 421 predicate places. [2022-01-19 00:38:12,707 INFO L470 AbstractCegarLoop]: Abstraction has has 608 places, 476 transitions, 7470 flow [2022-01-19 00:38:12,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:12,707 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:12,708 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:12,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-01-19 00:38:12,708 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:12,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:12,708 INFO L85 PathProgramCache]: Analyzing trace with hash 24850180, now seen corresponding path program 54 times [2022-01-19 00:38:12,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:12,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609858965] [2022-01-19 00:38:12,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:12,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:12,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:12,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:12,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609858965] [2022-01-19 00:38:12,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609858965] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:12,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:12,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:12,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684809678] [2022-01-19 00:38:12,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:12,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:12,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:12,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:12,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:12,811 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:12,812 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 476 transitions, 7470 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:12,812 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:12,812 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:12,812 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:13,907 INFO L129 PetriNetUnfolder]: 760/2661 cut-off events. [2022-01-19 00:38:13,908 INFO L130 PetriNetUnfolder]: For 52746/52770 co-relation queries the response was YES. [2022-01-19 00:38:13,943 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16674 conditions, 2661 events. 760/2661 cut-off events. For 52746/52770 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 20206 event pairs, 379 based on Foata normal form. 7/2571 useless extension candidates. Maximal degree in co-relation 16455. Up to 928 conditions per place. [2022-01-19 00:38:13,952 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 257 selfloop transitions, 108 changer transitions 58/564 dead transitions. [2022-01-19 00:38:13,952 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 564 transitions, 9971 flow [2022-01-19 00:38:13,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:38:13,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:38:13,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4808 transitions. [2022-01-19 00:38:13,955 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631746031746032 [2022-01-19 00:38:13,955 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4808 transitions. [2022-01-19 00:38:13,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4808 transitions. [2022-01-19 00:38:13,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:13,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4808 transitions. [2022-01-19 00:38:13,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.26666666666668) internal successors, (4808), 30 states have internal predecessors, (4808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:13,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:13,961 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:13,961 INFO L186 Difference]: Start difference. First operand has 608 places, 476 transitions, 7470 flow. Second operand 30 states and 4808 transitions. [2022-01-19 00:38:13,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 564 transitions, 9971 flow [2022-01-19 00:38:14,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 564 transitions, 9678 flow, removed 58 selfloop flow, removed 15 redundant places. [2022-01-19 00:38:14,246 INFO L242 Difference]: Finished difference. Result has 619 places, 464 transitions, 7156 flow [2022-01-19 00:38:14,247 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7218, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7156, PETRI_PLACES=619, PETRI_TRANSITIONS=464} [2022-01-19 00:38:14,247 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 432 predicate places. [2022-01-19 00:38:14,247 INFO L470 AbstractCegarLoop]: Abstraction has has 619 places, 464 transitions, 7156 flow [2022-01-19 00:38:14,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:14,247 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:14,247 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:14,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-01-19 00:38:14,247 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:14,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:14,248 INFO L85 PathProgramCache]: Analyzing trace with hash -616680000, now seen corresponding path program 55 times [2022-01-19 00:38:14,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:14,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252907432] [2022-01-19 00:38:14,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:14,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:14,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:14,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:14,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252907432] [2022-01-19 00:38:14,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252907432] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:14,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:14,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:14,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080328426] [2022-01-19 00:38:14,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:14,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:14,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:14,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:14,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:14,362 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:14,363 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 619 places, 464 transitions, 7156 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:14,363 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:14,363 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:14,363 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:15,423 INFO L129 PetriNetUnfolder]: 759/2663 cut-off events. [2022-01-19 00:38:15,423 INFO L130 PetriNetUnfolder]: For 53404/53428 co-relation queries the response was YES. [2022-01-19 00:38:15,465 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16714 conditions, 2663 events. 759/2663 cut-off events. For 53404/53428 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20321 event pairs, 379 based on Foata normal form. 7/2573 useless extension candidates. Maximal degree in co-relation 16493. Up to 928 conditions per place. [2022-01-19 00:38:15,474 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 257 selfloop transitions, 112 changer transitions 58/568 dead transitions. [2022-01-19 00:38:15,474 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 568 transitions, 10179 flow [2022-01-19 00:38:15,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:38:15,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:38:15,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4658 transitions. [2022-01-19 00:38:15,477 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7648604269293925 [2022-01-19 00:38:15,477 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4658 transitions. [2022-01-19 00:38:15,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4658 transitions. [2022-01-19 00:38:15,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:15,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4658 transitions. [2022-01-19 00:38:15,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.6206896551724) internal successors, (4658), 29 states have internal predecessors, (4658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:15,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:15,482 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:15,482 INFO L186 Difference]: Start difference. First operand has 619 places, 464 transitions, 7156 flow. Second operand 29 states and 4658 transitions. [2022-01-19 00:38:15,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 568 transitions, 10179 flow [2022-01-19 00:38:15,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 590 places, 568 transitions, 9620 flow, removed 57 selfloop flow, removed 30 redundant places. [2022-01-19 00:38:15,777 INFO L242 Difference]: Finished difference. Result has 600 places, 470 transitions, 7178 flow [2022-01-19 00:38:15,777 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6759, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7178, PETRI_PLACES=600, PETRI_TRANSITIONS=470} [2022-01-19 00:38:15,778 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 413 predicate places. [2022-01-19 00:38:15,778 INFO L470 AbstractCegarLoop]: Abstraction has has 600 places, 470 transitions, 7178 flow [2022-01-19 00:38:15,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:15,778 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:15,778 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:15,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-01-19 00:38:15,778 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:15,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:15,779 INFO L85 PathProgramCache]: Analyzing trace with hash -1319380294, now seen corresponding path program 56 times [2022-01-19 00:38:15,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:15,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237675932] [2022-01-19 00:38:15,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:15,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:15,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:15,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:15,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:15,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237675932] [2022-01-19 00:38:15,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237675932] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:15,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:15,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:15,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61529437] [2022-01-19 00:38:15,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:15,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:15,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:15,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:15,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:15,892 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:15,893 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 470 transitions, 7178 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:15,893 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:15,893 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:15,893 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:17,002 INFO L129 PetriNetUnfolder]: 736/2673 cut-off events. [2022-01-19 00:38:17,002 INFO L130 PetriNetUnfolder]: For 49962/49983 co-relation queries the response was YES. [2022-01-19 00:38:17,034 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15909 conditions, 2673 events. 736/2673 cut-off events. For 49962/49983 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 20335 event pairs, 396 based on Foata normal form. 7/2582 useless extension candidates. Maximal degree in co-relation 15696. Up to 918 conditions per place. [2022-01-19 00:38:17,042 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 247 selfloop transitions, 90 changer transitions 59/537 dead transitions. [2022-01-19 00:38:17,042 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 537 transitions, 9064 flow [2022-01-19 00:38:17,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 00:38:17,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 00:38:17,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4494 transitions. [2022-01-19 00:38:17,044 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2022-01-19 00:38:17,044 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4494 transitions. [2022-01-19 00:38:17,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4494 transitions. [2022-01-19 00:38:17,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:17,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4494 transitions. [2022-01-19 00:38:17,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.5) internal successors, (4494), 28 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:17,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:17,050 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:17,050 INFO L186 Difference]: Start difference. First operand has 600 places, 470 transitions, 7178 flow. Second operand 28 states and 4494 transitions. [2022-01-19 00:38:17,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 537 transitions, 9064 flow [2022-01-19 00:38:17,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 537 transitions, 8747 flow, removed 55 selfloop flow, removed 15 redundant places. [2022-01-19 00:38:17,299 INFO L242 Difference]: Finished difference. Result has 605 places, 438 transitions, 6281 flow [2022-01-19 00:38:17,299 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6890, PETRI_DIFFERENCE_MINUEND_PLACES=571, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=6281, PETRI_PLACES=605, PETRI_TRANSITIONS=438} [2022-01-19 00:38:17,299 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 418 predicate places. [2022-01-19 00:38:17,299 INFO L470 AbstractCegarLoop]: Abstraction has has 605 places, 438 transitions, 6281 flow [2022-01-19 00:38:17,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:17,300 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:17,300 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:17,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-01-19 00:38:17,300 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:17,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:17,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1341491040, now seen corresponding path program 57 times [2022-01-19 00:38:17,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:17,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766790358] [2022-01-19 00:38:17,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:17,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:17,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:17,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:17,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:17,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766790358] [2022-01-19 00:38:17,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766790358] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:17,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:17,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:17,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142494044] [2022-01-19 00:38:17,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:17,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:17,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:17,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:17,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:17,411 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:17,412 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 605 places, 438 transitions, 6281 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:17,412 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:17,412 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:17,412 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:18,436 INFO L129 PetriNetUnfolder]: 740/2678 cut-off events. [2022-01-19 00:38:18,437 INFO L130 PetriNetUnfolder]: For 50712/50733 co-relation queries the response was YES. [2022-01-19 00:38:18,478 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15926 conditions, 2678 events. 740/2678 cut-off events. For 50712/50733 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 20342 event pairs, 392 based on Foata normal form. 7/2587 useless extension candidates. Maximal degree in co-relation 15716. Up to 920 conditions per place. [2022-01-19 00:38:18,488 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 239 selfloop transitions, 112 changer transitions 56/548 dead transitions. [2022-01-19 00:38:18,488 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 548 transitions, 9296 flow [2022-01-19 00:38:18,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:38:18,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:38:18,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4659 transitions. [2022-01-19 00:38:18,490 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.765024630541872 [2022-01-19 00:38:18,490 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4659 transitions. [2022-01-19 00:38:18,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4659 transitions. [2022-01-19 00:38:18,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:18,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4659 transitions. [2022-01-19 00:38:18,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.6551724137931) internal successors, (4659), 29 states have internal predecessors, (4659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:18,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:18,496 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:18,496 INFO L186 Difference]: Start difference. First operand has 605 places, 438 transitions, 6281 flow. Second operand 29 states and 4659 transitions. [2022-01-19 00:38:18,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 548 transitions, 9296 flow [2022-01-19 00:38:18,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 564 places, 548 transitions, 8711 flow, removed 40 selfloop flow, removed 36 redundant places. [2022-01-19 00:38:18,736 INFO L242 Difference]: Finished difference. Result has 578 places, 449 transitions, 6391 flow [2022-01-19 00:38:18,736 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5834, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6391, PETRI_PLACES=578, PETRI_TRANSITIONS=449} [2022-01-19 00:38:18,737 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 391 predicate places. [2022-01-19 00:38:18,737 INFO L470 AbstractCegarLoop]: Abstraction has has 578 places, 449 transitions, 6391 flow [2022-01-19 00:38:18,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:18,737 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:18,737 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:18,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-01-19 00:38:18,737 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:18,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:18,737 INFO L85 PathProgramCache]: Analyzing trace with hash 940176230, now seen corresponding path program 58 times [2022-01-19 00:38:18,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:18,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806200741] [2022-01-19 00:38:18,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:18,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:18,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:18,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:18,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806200741] [2022-01-19 00:38:18,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806200741] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:18,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:18,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:18,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518831220] [2022-01-19 00:38:18,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:18,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:18,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:18,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:18,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:18,857 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:18,857 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 449 transitions, 6391 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:18,858 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:18,858 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:18,858 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:19,956 INFO L129 PetriNetUnfolder]: 727/2664 cut-off events. [2022-01-19 00:38:19,957 INFO L130 PetriNetUnfolder]: For 46108/46129 co-relation queries the response was YES. [2022-01-19 00:38:19,996 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15480 conditions, 2664 events. 727/2664 cut-off events. For 46108/46129 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 20407 event pairs, 358 based on Foata normal form. 7/2578 useless extension candidates. Maximal degree in co-relation 15274. Up to 896 conditions per place. [2022-01-19 00:38:20,004 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 238 selfloop transitions, 103 changer transitions 71/553 dead transitions. [2022-01-19 00:38:20,004 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 553 transitions, 9178 flow [2022-01-19 00:38:20,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 00:38:20,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 00:38:20,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5755 transitions. [2022-01-19 00:38:20,007 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612433862433863 [2022-01-19 00:38:20,007 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5755 transitions. [2022-01-19 00:38:20,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5755 transitions. [2022-01-19 00:38:20,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:20,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5755 transitions. [2022-01-19 00:38:20,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 159.86111111111111) internal successors, (5755), 36 states have internal predecessors, (5755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:20,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:20,014 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:20,014 INFO L186 Difference]: Start difference. First operand has 578 places, 449 transitions, 6391 flow. Second operand 36 states and 5755 transitions. [2022-01-19 00:38:20,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 553 transitions, 9178 flow [2022-01-19 00:38:20,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 553 transitions, 8906 flow, removed 58 selfloop flow, removed 13 redundant places. [2022-01-19 00:38:20,310 INFO L242 Difference]: Finished difference. Result has 604 places, 441 transitions, 6279 flow [2022-01-19 00:38:20,310 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6186, PETRI_DIFFERENCE_MINUEND_PLACES=551, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=449, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=6279, PETRI_PLACES=604, PETRI_TRANSITIONS=441} [2022-01-19 00:38:20,310 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 417 predicate places. [2022-01-19 00:38:20,311 INFO L470 AbstractCegarLoop]: Abstraction has has 604 places, 441 transitions, 6279 flow [2022-01-19 00:38:20,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:20,311 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:20,311 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:20,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-01-19 00:38:20,311 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:20,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:20,312 INFO L85 PathProgramCache]: Analyzing trace with hash -771603968, now seen corresponding path program 59 times [2022-01-19 00:38:20,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:20,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712357821] [2022-01-19 00:38:20,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:20,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:20,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:20,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:20,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712357821] [2022-01-19 00:38:20,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712357821] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:20,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:20,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:20,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432266717] [2022-01-19 00:38:20,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:20,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:20,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:20,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:20,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:20,415 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:20,415 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 441 transitions, 6279 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:20,415 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:20,415 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:20,415 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:21,449 INFO L129 PetriNetUnfolder]: 699/2574 cut-off events. [2022-01-19 00:38:21,449 INFO L130 PetriNetUnfolder]: For 45769/45790 co-relation queries the response was YES. [2022-01-19 00:38:21,489 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14864 conditions, 2574 events. 699/2574 cut-off events. For 45769/45790 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 19464 event pairs, 359 based on Foata normal form. 7/2487 useless extension candidates. Maximal degree in co-relation 14648. Up to 908 conditions per place. [2022-01-19 00:38:21,497 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 226 selfloop transitions, 86 changer transitions 61/514 dead transitions. [2022-01-19 00:38:21,497 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 514 transitions, 8284 flow [2022-01-19 00:38:21,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:38:21,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:38:21,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4800 transitions. [2022-01-19 00:38:21,499 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2022-01-19 00:38:21,499 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4800 transitions. [2022-01-19 00:38:21,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4800 transitions. [2022-01-19 00:38:21,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:21,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4800 transitions. [2022-01-19 00:38:21,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.0) internal successors, (4800), 30 states have internal predecessors, (4800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:21,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:21,505 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:21,505 INFO L186 Difference]: Start difference. First operand has 604 places, 441 transitions, 6279 flow. Second operand 30 states and 4800 transitions. [2022-01-19 00:38:21,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 514 transitions, 8284 flow [2022-01-19 00:38:21,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 586 places, 514 transitions, 7924 flow, removed 88 selfloop flow, removed 25 redundant places. [2022-01-19 00:38:21,735 INFO L242 Difference]: Finished difference. Result has 597 places, 413 transitions, 5526 flow [2022-01-19 00:38:21,735 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6010, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5526, PETRI_PLACES=597, PETRI_TRANSITIONS=413} [2022-01-19 00:38:21,735 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 410 predicate places. [2022-01-19 00:38:21,735 INFO L470 AbstractCegarLoop]: Abstraction has has 597 places, 413 transitions, 5526 flow [2022-01-19 00:38:21,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:21,735 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:21,736 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:21,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-01-19 00:38:21,736 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:21,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:21,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1027088626, now seen corresponding path program 60 times [2022-01-19 00:38:21,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:21,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469419033] [2022-01-19 00:38:21,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:21,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:21,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:21,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:21,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:21,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469419033] [2022-01-19 00:38:21,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469419033] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:21,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:21,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:21,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314457389] [2022-01-19 00:38:21,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:21,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:21,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:21,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:21,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:21,863 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:21,864 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 413 transitions, 5526 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:21,864 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:21,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:21,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:22,865 INFO L129 PetriNetUnfolder]: 691/2544 cut-off events. [2022-01-19 00:38:22,865 INFO L130 PetriNetUnfolder]: For 44573/44594 co-relation queries the response was YES. [2022-01-19 00:38:22,902 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14462 conditions, 2544 events. 691/2544 cut-off events. For 44573/44594 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 19112 event pairs, 355 based on Foata normal form. 7/2459 useless extension candidates. Maximal degree in co-relation 14254. Up to 904 conditions per place. [2022-01-19 00:38:22,910 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 222 selfloop transitions, 77 changer transitions 58/498 dead transitions. [2022-01-19 00:38:22,910 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 498 transitions, 7772 flow [2022-01-19 00:38:22,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:38:22,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:38:22,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4804 transitions. [2022-01-19 00:38:22,913 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625396825396825 [2022-01-19 00:38:22,913 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4804 transitions. [2022-01-19 00:38:22,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4804 transitions. [2022-01-19 00:38:22,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:22,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4804 transitions. [2022-01-19 00:38:22,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.13333333333333) internal successors, (4804), 30 states have internal predecessors, (4804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:22,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:22,919 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:22,919 INFO L186 Difference]: Start difference. First operand has 597 places, 413 transitions, 5526 flow. Second operand 30 states and 4804 transitions. [2022-01-19 00:38:22,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 498 transitions, 7772 flow [2022-01-19 00:38:23,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 498 transitions, 7279 flow, removed 36 selfloop flow, removed 35 redundant places. [2022-01-19 00:38:23,131 INFO L242 Difference]: Finished difference. Result has 568 places, 400 transitions, 5022 flow [2022-01-19 00:38:23,131 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5137, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5022, PETRI_PLACES=568, PETRI_TRANSITIONS=400} [2022-01-19 00:38:23,131 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 381 predicate places. [2022-01-19 00:38:23,132 INFO L470 AbstractCegarLoop]: Abstraction has has 568 places, 400 transitions, 5022 flow [2022-01-19 00:38:23,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:23,132 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:23,132 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:23,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-01-19 00:38:23,132 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:23,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:23,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1112404892, now seen corresponding path program 61 times [2022-01-19 00:38:23,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:23,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374168859] [2022-01-19 00:38:23,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:23,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:23,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:23,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:23,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:23,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374168859] [2022-01-19 00:38:23,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374168859] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:23,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:23,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:23,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696855490] [2022-01-19 00:38:23,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:23,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:23,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:23,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:23,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:23,244 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:23,245 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 400 transitions, 5022 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:23,245 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:23,245 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:23,245 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:24,177 INFO L129 PetriNetUnfolder]: 663/2462 cut-off events. [2022-01-19 00:38:24,177 INFO L130 PetriNetUnfolder]: For 39146/39167 co-relation queries the response was YES. [2022-01-19 00:38:24,210 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13488 conditions, 2462 events. 663/2462 cut-off events. For 39146/39167 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 18463 event pairs, 355 based on Foata normal form. 7/2377 useless extension candidates. Maximal degree in co-relation 13289. Up to 890 conditions per place. [2022-01-19 00:38:24,217 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 202 selfloop transitions, 51 changer transitions 61/455 dead transitions. [2022-01-19 00:38:24,218 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 569 places, 455 transitions, 6463 flow [2022-01-19 00:38:24,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:38:24,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:38:24,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4636 transitions. [2022-01-19 00:38:24,220 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.761247947454844 [2022-01-19 00:38:24,220 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4636 transitions. [2022-01-19 00:38:24,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4636 transitions. [2022-01-19 00:38:24,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:24,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4636 transitions. [2022-01-19 00:38:24,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 159.86206896551724) internal successors, (4636), 29 states have internal predecessors, (4636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:24,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:24,225 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:24,226 INFO L186 Difference]: Start difference. First operand has 568 places, 400 transitions, 5022 flow. Second operand 29 states and 4636 transitions. [2022-01-19 00:38:24,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 569 places, 455 transitions, 6463 flow [2022-01-19 00:38:24,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 455 transitions, 6168 flow, removed 23 selfloop flow, removed 31 redundant places. [2022-01-19 00:38:24,414 INFO L242 Difference]: Finished difference. Result has 543 places, 354 transitions, 3905 flow [2022-01-19 00:38:24,414 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4749, PETRI_DIFFERENCE_MINUEND_PLACES=510, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=3905, PETRI_PLACES=543, PETRI_TRANSITIONS=354} [2022-01-19 00:38:24,414 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 356 predicate places. [2022-01-19 00:38:24,414 INFO L470 AbstractCegarLoop]: Abstraction has has 543 places, 354 transitions, 3905 flow [2022-01-19 00:38:24,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:24,414 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:24,415 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:24,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-01-19 00:38:24,415 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:24,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:24,415 INFO L85 PathProgramCache]: Analyzing trace with hash 711864822, now seen corresponding path program 62 times [2022-01-19 00:38:24,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:24,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247787623] [2022-01-19 00:38:24,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:24,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:24,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:24,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:24,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247787623] [2022-01-19 00:38:24,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247787623] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:24,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:24,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:24,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245517985] [2022-01-19 00:38:24,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:24,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:24,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:24,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:24,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:24,518 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:24,519 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 354 transitions, 3905 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:24,519 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:24,519 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:24,519 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:25,362 INFO L129 PetriNetUnfolder]: 632/2349 cut-off events. [2022-01-19 00:38:25,362 INFO L130 PetriNetUnfolder]: For 35266/35287 co-relation queries the response was YES. [2022-01-19 00:38:25,393 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12498 conditions, 2349 events. 632/2349 cut-off events. For 35266/35287 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 17227 event pairs, 347 based on Foata normal form. 7/2265 useless extension candidates. Maximal degree in co-relation 12314. Up to 870 conditions per place. [2022-01-19 00:38:25,400 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 174 selfloop transitions, 28 changer transitions 65/408 dead transitions. [2022-01-19 00:38:25,400 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 408 transitions, 5190 flow [2022-01-19 00:38:25,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:38:25,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:38:25,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4777 transitions. [2022-01-19 00:38:25,402 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7582539682539683 [2022-01-19 00:38:25,403 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4777 transitions. [2022-01-19 00:38:25,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4777 transitions. [2022-01-19 00:38:25,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:25,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4777 transitions. [2022-01-19 00:38:25,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.23333333333332) internal successors, (4777), 30 states have internal predecessors, (4777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:25,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:25,409 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:25,409 INFO L186 Difference]: Start difference. First operand has 543 places, 354 transitions, 3905 flow. Second operand 30 states and 4777 transitions. [2022-01-19 00:38:25,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 408 transitions, 5190 flow [2022-01-19 00:38:25,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 408 transitions, 4823 flow, removed 25 selfloop flow, removed 37 redundant places. [2022-01-19 00:38:25,553 INFO L242 Difference]: Finished difference. Result has 492 places, 303 transitions, 2710 flow [2022-01-19 00:38:25,553 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3566, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2710, PETRI_PLACES=492, PETRI_TRANSITIONS=303} [2022-01-19 00:38:25,553 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 305 predicate places. [2022-01-19 00:38:25,553 INFO L470 AbstractCegarLoop]: Abstraction has has 492 places, 303 transitions, 2710 flow [2022-01-19 00:38:25,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:25,554 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:25,554 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:25,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-01-19 00:38:25,554 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:25,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:25,554 INFO L85 PathProgramCache]: Analyzing trace with hash -59226848, now seen corresponding path program 63 times [2022-01-19 00:38:25,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:25,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278330949] [2022-01-19 00:38:25,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:25,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:25,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:25,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:25,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278330949] [2022-01-19 00:38:25,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278330949] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:25,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:25,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:25,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593923645] [2022-01-19 00:38:25,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:25,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:25,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:25,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:25,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:25,675 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:25,676 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 303 transitions, 2710 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:25,676 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:25,676 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:25,676 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:26,733 INFO L129 PetriNetUnfolder]: 669/2386 cut-off events. [2022-01-19 00:38:26,734 INFO L130 PetriNetUnfolder]: For 35382/35400 co-relation queries the response was YES. [2022-01-19 00:38:26,764 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13077 conditions, 2386 events. 669/2386 cut-off events. For 35382/35400 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 17371 event pairs, 365 based on Foata normal form. 3/2299 useless extension candidates. Maximal degree in co-relation 12904. Up to 870 conditions per place. [2022-01-19 00:38:26,771 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 191 selfloop transitions, 52 changer transitions 70/454 dead transitions. [2022-01-19 00:38:26,771 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 454 transitions, 6324 flow [2022-01-19 00:38:26,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 00:38:26,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 00:38:26,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7334 transitions. [2022-01-19 00:38:26,775 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7592132505175984 [2022-01-19 00:38:26,775 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7334 transitions. [2022-01-19 00:38:26,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7334 transitions. [2022-01-19 00:38:26,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:26,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7334 transitions. [2022-01-19 00:38:26,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.43478260869566) internal successors, (7334), 46 states have internal predecessors, (7334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:26,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:26,784 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:26,784 INFO L186 Difference]: Start difference. First operand has 492 places, 303 transitions, 2710 flow. Second operand 46 states and 7334 transitions. [2022-01-19 00:38:26,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 454 transitions, 6324 flow [2022-01-19 00:38:26,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 454 transitions, 5771 flow, removed 89 selfloop flow, removed 35 redundant places. [2022-01-19 00:38:26,908 INFO L242 Difference]: Finished difference. Result has 465 places, 324 transitions, 3136 flow [2022-01-19 00:38:26,908 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2468, PETRI_DIFFERENCE_MINUEND_PLACES=389, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=3136, PETRI_PLACES=465, PETRI_TRANSITIONS=324} [2022-01-19 00:38:26,908 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 278 predicate places. [2022-01-19 00:38:26,908 INFO L470 AbstractCegarLoop]: Abstraction has has 465 places, 324 transitions, 3136 flow [2022-01-19 00:38:26,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:26,909 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:26,909 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:26,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-01-19 00:38:26,909 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:26,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:26,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1612633054, now seen corresponding path program 64 times [2022-01-19 00:38:26,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:26,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095918049] [2022-01-19 00:38:26,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:26,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:26,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:27,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:27,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:27,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095918049] [2022-01-19 00:38:27,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095918049] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:27,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:27,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:27,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441108813] [2022-01-19 00:38:27,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:27,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:27,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:27,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:27,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:27,027 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:27,027 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 324 transitions, 3136 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:27,027 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:27,027 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:27,027 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:28,092 INFO L129 PetriNetUnfolder]: 713/2489 cut-off events. [2022-01-19 00:38:28,092 INFO L130 PetriNetUnfolder]: For 37447/37467 co-relation queries the response was YES. [2022-01-19 00:38:28,124 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14129 conditions, 2489 events. 713/2489 cut-off events. For 37447/37467 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 18196 event pairs, 396 based on Foata normal form. 3/2399 useless extension candidates. Maximal degree in co-relation 13952. Up to 870 conditions per place. [2022-01-19 00:38:28,132 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 197 selfloop transitions, 64 changer transitions 70/472 dead transitions. [2022-01-19 00:38:28,132 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 472 transitions, 6973 flow [2022-01-19 00:38:28,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-19 00:38:28,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-01-19 00:38:28,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6864 transitions. [2022-01-19 00:38:28,135 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7601328903654485 [2022-01-19 00:38:28,136 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6864 transitions. [2022-01-19 00:38:28,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6864 transitions. [2022-01-19 00:38:28,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:28,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6864 transitions. [2022-01-19 00:38:28,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 159.62790697674419) internal successors, (6864), 43 states have internal predecessors, (6864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:28,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:28,144 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:28,144 INFO L186 Difference]: Start difference. First operand has 465 places, 324 transitions, 3136 flow. Second operand 43 states and 6864 transitions. [2022-01-19 00:38:28,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 472 transitions, 6973 flow [2022-01-19 00:38:28,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 472 transitions, 6244 flow, removed 353 selfloop flow, removed 25 redundant places. [2022-01-19 00:38:28,283 INFO L242 Difference]: Finished difference. Result has 485 places, 346 transitions, 3642 flow [2022-01-19 00:38:28,283 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2926, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=3642, PETRI_PLACES=485, PETRI_TRANSITIONS=346} [2022-01-19 00:38:28,284 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 298 predicate places. [2022-01-19 00:38:28,284 INFO L470 AbstractCegarLoop]: Abstraction has has 485 places, 346 transitions, 3642 flow [2022-01-19 00:38:28,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:28,284 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:28,284 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:28,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-01-19 00:38:28,284 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:28,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:28,284 INFO L85 PathProgramCache]: Analyzing trace with hash 58890488, now seen corresponding path program 65 times [2022-01-19 00:38:28,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:28,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125169253] [2022-01-19 00:38:28,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:28,285 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:28,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:28,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:28,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125169253] [2022-01-19 00:38:28,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125169253] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:28,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:28,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:28,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241879350] [2022-01-19 00:38:28,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:28,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:28,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:28,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:28,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:28,389 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:28,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 346 transitions, 3642 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:28,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:28,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:28,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:29,633 INFO L129 PetriNetUnfolder]: 747/2589 cut-off events. [2022-01-19 00:38:29,633 INFO L130 PetriNetUnfolder]: For 45367/45387 co-relation queries the response was YES. [2022-01-19 00:38:29,669 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15583 conditions, 2589 events. 747/2589 cut-off events. For 45367/45387 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 19306 event pairs, 384 based on Foata normal form. 3/2497 useless extension candidates. Maximal degree in co-relation 15394. Up to 870 conditions per place. [2022-01-19 00:38:29,677 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 214 selfloop transitions, 70 changer transitions 70/495 dead transitions. [2022-01-19 00:38:29,678 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 495 transitions, 7798 flow [2022-01-19 00:38:29,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 00:38:29,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 00:38:29,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7180 transitions. [2022-01-19 00:38:29,681 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7597883597883598 [2022-01-19 00:38:29,681 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7180 transitions. [2022-01-19 00:38:29,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7180 transitions. [2022-01-19 00:38:29,682 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:29,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7180 transitions. [2022-01-19 00:38:29,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.55555555555554) internal successors, (7180), 45 states have internal predecessors, (7180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:29,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:29,690 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:29,690 INFO L186 Difference]: Start difference. First operand has 485 places, 346 transitions, 3642 flow. Second operand 45 states and 7180 transitions. [2022-01-19 00:38:29,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 495 transitions, 7798 flow [2022-01-19 00:38:29,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 495 transitions, 7157 flow, removed 287 selfloop flow, removed 25 redundant places. [2022-01-19 00:38:29,876 INFO L242 Difference]: Finished difference. Result has 509 places, 366 transitions, 4207 flow [2022-01-19 00:38:29,876 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3475, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=4207, PETRI_PLACES=509, PETRI_TRANSITIONS=366} [2022-01-19 00:38:29,877 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 322 predicate places. [2022-01-19 00:38:29,877 INFO L470 AbstractCegarLoop]: Abstraction has has 509 places, 366 transitions, 4207 flow [2022-01-19 00:38:29,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:29,877 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:29,877 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:29,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-01-19 00:38:29,877 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:29,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:29,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1538926772, now seen corresponding path program 66 times [2022-01-19 00:38:29,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:29,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071850778] [2022-01-19 00:38:29,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:29,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:29,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:29,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:29,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071850778] [2022-01-19 00:38:29,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071850778] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:29,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:29,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:29,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113939264] [2022-01-19 00:38:29,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:29,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:29,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:29,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:29,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:29,987 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:29,988 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 509 places, 366 transitions, 4207 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:29,988 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:29,988 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:29,988 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:31,227 INFO L129 PetriNetUnfolder]: 743/2673 cut-off events. [2022-01-19 00:38:31,227 INFO L130 PetriNetUnfolder]: For 46832/46838 co-relation queries the response was YES. [2022-01-19 00:38:31,258 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15765 conditions, 2673 events. 743/2673 cut-off events. For 46832/46838 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 20246 event pairs, 445 based on Foata normal form. 1/2577 useless extension candidates. Maximal degree in co-relation 15564. Up to 870 conditions per place. [2022-01-19 00:38:31,267 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 217 selfloop transitions, 74 changer transitions 72/504 dead transitions. [2022-01-19 00:38:31,267 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 520 places, 504 transitions, 8271 flow [2022-01-19 00:38:31,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 00:38:31,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 00:38:31,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7025 transitions. [2022-01-19 00:38:31,270 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7602813852813853 [2022-01-19 00:38:31,270 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7025 transitions. [2022-01-19 00:38:31,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7025 transitions. [2022-01-19 00:38:31,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:31,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7025 transitions. [2022-01-19 00:38:31,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.6590909090909) internal successors, (7025), 44 states have internal predecessors, (7025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:31,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:31,279 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:31,279 INFO L186 Difference]: Start difference. First operand has 509 places, 366 transitions, 4207 flow. Second operand 44 states and 7025 transitions. [2022-01-19 00:38:31,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 520 places, 504 transitions, 8271 flow [2022-01-19 00:38:31,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 504 transitions, 7660 flow, removed 294 selfloop flow, removed 32 redundant places. [2022-01-19 00:38:31,460 INFO L242 Difference]: Finished difference. Result has 522 places, 375 transitions, 4584 flow [2022-01-19 00:38:31,460 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4053, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=4584, PETRI_PLACES=522, PETRI_TRANSITIONS=375} [2022-01-19 00:38:31,460 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 335 predicate places. [2022-01-19 00:38:31,460 INFO L470 AbstractCegarLoop]: Abstraction has has 522 places, 375 transitions, 4584 flow [2022-01-19 00:38:31,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:31,461 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:31,461 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:31,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-01-19 00:38:31,461 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:31,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:31,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1707985558, now seen corresponding path program 67 times [2022-01-19 00:38:31,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:31,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095102485] [2022-01-19 00:38:31,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:31,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:31,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:31,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:31,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095102485] [2022-01-19 00:38:31,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095102485] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:31,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:31,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:31,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152938053] [2022-01-19 00:38:31,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:31,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:31,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:31,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:31,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:31,569 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:31,570 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 522 places, 375 transitions, 4584 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:31,570 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:31,570 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:31,570 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:32,691 INFO L129 PetriNetUnfolder]: 733/2639 cut-off events. [2022-01-19 00:38:32,692 INFO L130 PetriNetUnfolder]: For 46684/46690 co-relation queries the response was YES. [2022-01-19 00:38:32,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15534 conditions, 2639 events. 733/2639 cut-off events. For 46684/46690 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 19827 event pairs, 412 based on Foata normal form. 1/2546 useless extension candidates. Maximal degree in co-relation 15330. Up to 870 conditions per place. [2022-01-19 00:38:32,738 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 208 selfloop transitions, 81 changer transitions 62/492 dead transitions. [2022-01-19 00:38:32,739 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 492 transitions, 8064 flow [2022-01-19 00:38:32,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:38:32,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:38:32,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6074 transitions. [2022-01-19 00:38:32,741 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7611528822055138 [2022-01-19 00:38:32,742 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6074 transitions. [2022-01-19 00:38:32,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6074 transitions. [2022-01-19 00:38:32,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:32,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6074 transitions. [2022-01-19 00:38:32,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.8421052631579) internal successors, (6074), 38 states have internal predecessors, (6074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:32,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:32,749 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:32,749 INFO L186 Difference]: Start difference. First operand has 522 places, 375 transitions, 4584 flow. Second operand 38 states and 6074 transitions. [2022-01-19 00:38:32,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 492 transitions, 8064 flow [2022-01-19 00:38:32,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 500 places, 492 transitions, 7420 flow, removed 270 selfloop flow, removed 28 redundant places. [2022-01-19 00:38:32,953 INFO L242 Difference]: Finished difference. Result has 521 places, 387 transitions, 4924 flow [2022-01-19 00:38:32,953 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4340, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=4924, PETRI_PLACES=521, PETRI_TRANSITIONS=387} [2022-01-19 00:38:32,953 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 334 predicate places. [2022-01-19 00:38:32,953 INFO L470 AbstractCegarLoop]: Abstraction has has 521 places, 387 transitions, 4924 flow [2022-01-19 00:38:32,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:32,953 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:32,953 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:32,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-01-19 00:38:32,954 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:32,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:32,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1714333308, now seen corresponding path program 68 times [2022-01-19 00:38:32,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:32,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968104656] [2022-01-19 00:38:32,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:32,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:33,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:33,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:33,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968104656] [2022-01-19 00:38:33,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968104656] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:33,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:33,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:33,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614104983] [2022-01-19 00:38:33,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:33,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:33,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:33,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:33,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:33,080 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:33,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 387 transitions, 4924 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:33,081 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:33,081 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:33,081 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:34,158 INFO L129 PetriNetUnfolder]: 766/2715 cut-off events. [2022-01-19 00:38:34,158 INFO L130 PetriNetUnfolder]: For 48166/48172 co-relation queries the response was YES. [2022-01-19 00:38:34,196 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16474 conditions, 2715 events. 766/2715 cut-off events. For 48166/48172 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 20487 event pairs, 448 based on Foata normal form. 1/2617 useless extension candidates. Maximal degree in co-relation 16276. Up to 870 conditions per place. [2022-01-19 00:38:34,204 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 216 selfloop transitions, 98 changer transitions 63/518 dead transitions. [2022-01-19 00:38:34,205 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 518 transitions, 8714 flow [2022-01-19 00:38:34,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 00:38:34,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 00:38:34,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5604 transitions. [2022-01-19 00:38:34,207 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7624489795918368 [2022-01-19 00:38:34,207 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5604 transitions. [2022-01-19 00:38:34,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5604 transitions. [2022-01-19 00:38:34,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:34,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5604 transitions. [2022-01-19 00:38:34,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.11428571428573) internal successors, (5604), 35 states have internal predecessors, (5604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:34,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:34,281 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:34,281 INFO L186 Difference]: Start difference. First operand has 521 places, 387 transitions, 4924 flow. Second operand 35 states and 5604 transitions. [2022-01-19 00:38:34,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 518 transitions, 8714 flow [2022-01-19 00:38:34,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 518 transitions, 7959 flow, removed 324 selfloop flow, removed 20 redundant places. [2022-01-19 00:38:34,483 INFO L242 Difference]: Finished difference. Result has 537 places, 406 transitions, 5312 flow [2022-01-19 00:38:34,484 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4567, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5312, PETRI_PLACES=537, PETRI_TRANSITIONS=406} [2022-01-19 00:38:34,484 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 350 predicate places. [2022-01-19 00:38:34,484 INFO L470 AbstractCegarLoop]: Abstraction has has 537 places, 406 transitions, 5312 flow [2022-01-19 00:38:34,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:34,484 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:34,484 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:34,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-01-19 00:38:34,485 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:34,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:34,485 INFO L85 PathProgramCache]: Analyzing trace with hash -838985778, now seen corresponding path program 69 times [2022-01-19 00:38:34,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:34,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850754836] [2022-01-19 00:38:34,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:34,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:34,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:34,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:34,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:34,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850754836] [2022-01-19 00:38:34,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850754836] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:34,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:34,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:34,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735573240] [2022-01-19 00:38:34,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:34,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:34,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:34,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:34,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:34,592 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:34,593 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 406 transitions, 5312 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:34,593 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:34,593 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:34,593 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:35,793 INFO L129 PetriNetUnfolder]: 785/2772 cut-off events. [2022-01-19 00:38:35,793 INFO L130 PetriNetUnfolder]: For 50993/50999 co-relation queries the response was YES. [2022-01-19 00:38:35,834 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17102 conditions, 2772 events. 785/2772 cut-off events. For 50993/50999 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 21116 event pairs, 451 based on Foata normal form. 1/2677 useless extension candidates. Maximal degree in co-relation 16895. Up to 870 conditions per place. [2022-01-19 00:38:35,843 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 227 selfloop transitions, 99 changer transitions 60/527 dead transitions. [2022-01-19 00:38:35,843 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 527 transitions, 8945 flow [2022-01-19 00:38:35,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:38:35,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:38:35,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6078 transitions. [2022-01-19 00:38:35,846 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616541353383459 [2022-01-19 00:38:35,846 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6078 transitions. [2022-01-19 00:38:35,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6078 transitions. [2022-01-19 00:38:35,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:35,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6078 transitions. [2022-01-19 00:38:35,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.94736842105263) internal successors, (6078), 38 states have internal predecessors, (6078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:35,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:35,853 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:35,853 INFO L186 Difference]: Start difference. First operand has 537 places, 406 transitions, 5312 flow. Second operand 38 states and 6078 transitions. [2022-01-19 00:38:35,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 527 transitions, 8945 flow [2022-01-19 00:38:36,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 532 places, 527 transitions, 8371 flow, removed 192 selfloop flow, removed 21 redundant places. [2022-01-19 00:38:36,091 INFO L242 Difference]: Finished difference. Result has 557 places, 421 transitions, 5728 flow [2022-01-19 00:38:36,092 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5048, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=5728, PETRI_PLACES=557, PETRI_TRANSITIONS=421} [2022-01-19 00:38:36,092 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 370 predicate places. [2022-01-19 00:38:36,092 INFO L470 AbstractCegarLoop]: Abstraction has has 557 places, 421 transitions, 5728 flow [2022-01-19 00:38:36,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:36,092 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:36,092 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:36,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-01-19 00:38:36,092 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:36,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:36,093 INFO L85 PathProgramCache]: Analyzing trace with hash -624649196, now seen corresponding path program 70 times [2022-01-19 00:38:36,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:36,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799188366] [2022-01-19 00:38:36,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:36,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:36,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:36,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:36,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:36,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799188366] [2022-01-19 00:38:36,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799188366] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:36,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:36,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:36,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175207926] [2022-01-19 00:38:36,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:36,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:36,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:36,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:36,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:36,208 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:36,209 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 557 places, 421 transitions, 5728 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:36,209 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:36,209 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:36,209 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:37,428 INFO L129 PetriNetUnfolder]: 812/2845 cut-off events. [2022-01-19 00:38:37,428 INFO L130 PetriNetUnfolder]: For 56654/56660 co-relation queries the response was YES. [2022-01-19 00:38:37,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18058 conditions, 2845 events. 812/2845 cut-off events. For 56654/56660 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 21808 event pairs, 475 based on Foata normal form. 1/2747 useless extension candidates. Maximal degree in co-relation 17843. Up to 870 conditions per place. [2022-01-19 00:38:37,482 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 239 selfloop transitions, 106 changer transitions 61/547 dead transitions. [2022-01-19 00:38:37,482 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 568 places, 547 transitions, 9610 flow [2022-01-19 00:38:37,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 00:38:37,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 00:38:37,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5769 transitions. [2022-01-19 00:38:37,485 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763095238095238 [2022-01-19 00:38:37,485 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5769 transitions. [2022-01-19 00:38:37,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5769 transitions. [2022-01-19 00:38:37,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:37,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5769 transitions. [2022-01-19 00:38:37,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.25) internal successors, (5769), 36 states have internal predecessors, (5769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:37,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:37,492 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:37,492 INFO L186 Difference]: Start difference. First operand has 557 places, 421 transitions, 5728 flow. Second operand 36 states and 5769 transitions. [2022-01-19 00:38:37,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 568 places, 547 transitions, 9610 flow [2022-01-19 00:38:37,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 543 places, 547 transitions, 9124 flow, removed 185 selfloop flow, removed 25 redundant places. [2022-01-19 00:38:37,817 INFO L242 Difference]: Finished difference. Result has 569 places, 443 transitions, 6429 flow [2022-01-19 00:38:37,818 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5502, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=6429, PETRI_PLACES=569, PETRI_TRANSITIONS=443} [2022-01-19 00:38:37,818 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 382 predicate places. [2022-01-19 00:38:37,818 INFO L470 AbstractCegarLoop]: Abstraction has has 569 places, 443 transitions, 6429 flow [2022-01-19 00:38:37,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:37,818 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:37,819 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:37,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-01-19 00:38:37,819 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:37,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:37,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1759232538, now seen corresponding path program 71 times [2022-01-19 00:38:37,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:37,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004685919] [2022-01-19 00:38:37,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:37,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:37,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:37,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:37,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:37,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004685919] [2022-01-19 00:38:37,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004685919] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:37,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:37,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:37,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373093407] [2022-01-19 00:38:37,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:37,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:37,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:37,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:37,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:37,926 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:37,926 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 569 places, 443 transitions, 6429 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:37,926 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:37,926 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:37,926 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:39,142 INFO L129 PetriNetUnfolder]: 804/2835 cut-off events. [2022-01-19 00:38:39,142 INFO L130 PetriNetUnfolder]: For 59440/59446 co-relation queries the response was YES. [2022-01-19 00:38:39,188 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18147 conditions, 2835 events. 804/2835 cut-off events. For 59440/59446 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 21714 event pairs, 457 based on Foata normal form. 1/2737 useless extension candidates. Maximal degree in co-relation 17928. Up to 870 conditions per place. [2022-01-19 00:38:39,198 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 244 selfloop transitions, 107 changer transitions 61/553 dead transitions. [2022-01-19 00:38:39,198 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 553 transitions, 10040 flow [2022-01-19 00:38:39,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 00:38:39,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 00:38:39,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5924 transitions. [2022-01-19 00:38:39,201 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7624195624195624 [2022-01-19 00:38:39,201 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5924 transitions. [2022-01-19 00:38:39,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5924 transitions. [2022-01-19 00:38:39,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:39,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5924 transitions. [2022-01-19 00:38:39,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.1081081081081) internal successors, (5924), 37 states have internal predecessors, (5924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:39,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:39,208 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:39,208 INFO L186 Difference]: Start difference. First operand has 569 places, 443 transitions, 6429 flow. Second operand 37 states and 5924 transitions. [2022-01-19 00:38:39,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 553 transitions, 10040 flow [2022-01-19 00:38:39,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 553 transitions, 9503 flow, removed 211 selfloop flow, removed 20 redundant places. [2022-01-19 00:38:39,502 INFO L242 Difference]: Finished difference. Result has 587 places, 451 transitions, 6717 flow [2022-01-19 00:38:39,503 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6186, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=6717, PETRI_PLACES=587, PETRI_TRANSITIONS=451} [2022-01-19 00:38:39,503 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 400 predicate places. [2022-01-19 00:38:39,503 INFO L470 AbstractCegarLoop]: Abstraction has has 587 places, 451 transitions, 6717 flow [2022-01-19 00:38:39,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:39,503 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:39,503 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:39,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-01-19 00:38:39,504 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:39,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:39,504 INFO L85 PathProgramCache]: Analyzing trace with hash -730277562, now seen corresponding path program 72 times [2022-01-19 00:38:39,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:39,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473518815] [2022-01-19 00:38:39,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:39,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:39,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:39,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:39,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473518815] [2022-01-19 00:38:39,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473518815] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:39,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:39,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:39,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368447017] [2022-01-19 00:38:39,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:39,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:39,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:39,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:39,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:39,612 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:39,612 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 451 transitions, 6717 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:39,612 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:39,612 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:39,612 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:40,858 INFO L129 PetriNetUnfolder]: 832/2914 cut-off events. [2022-01-19 00:38:40,858 INFO L130 PetriNetUnfolder]: For 65873/65879 co-relation queries the response was YES. [2022-01-19 00:38:40,907 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19058 conditions, 2914 events. 832/2914 cut-off events. For 65873/65879 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 22599 event pairs, 472 based on Foata normal form. 1/2814 useless extension candidates. Maximal degree in co-relation 18832. Up to 870 conditions per place. [2022-01-19 00:38:40,917 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 269 selfloop transitions, 106 changer transitions 63/579 dead transitions. [2022-01-19 00:38:40,918 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 579 transitions, 10802 flow [2022-01-19 00:38:40,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 00:38:40,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 00:38:40,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5765 transitions. [2022-01-19 00:38:40,920 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625661375661376 [2022-01-19 00:38:40,920 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5765 transitions. [2022-01-19 00:38:40,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5765 transitions. [2022-01-19 00:38:40,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:40,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5765 transitions. [2022-01-19 00:38:40,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.13888888888889) internal successors, (5765), 36 states have internal predecessors, (5765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:40,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:40,927 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:40,927 INFO L186 Difference]: Start difference. First operand has 587 places, 451 transitions, 6717 flow. Second operand 36 states and 5765 transitions. [2022-01-19 00:38:40,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 579 transitions, 10802 flow [2022-01-19 00:38:41,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 579 transitions, 10313 flow, removed 176 selfloop flow, removed 20 redundant places. [2022-01-19 00:38:41,316 INFO L242 Difference]: Finished difference. Result has 605 places, 471 transitions, 7343 flow [2022-01-19 00:38:41,316 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6458, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=7343, PETRI_PLACES=605, PETRI_TRANSITIONS=471} [2022-01-19 00:38:41,316 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 418 predicate places. [2022-01-19 00:38:41,316 INFO L470 AbstractCegarLoop]: Abstraction has has 605 places, 471 transitions, 7343 flow [2022-01-19 00:38:41,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:41,316 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:41,316 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:41,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-01-19 00:38:41,317 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:41,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:41,317 INFO L85 PathProgramCache]: Analyzing trace with hash -199673802, now seen corresponding path program 73 times [2022-01-19 00:38:41,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:41,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21635530] [2022-01-19 00:38:41,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:41,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:41,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:41,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:41,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21635530] [2022-01-19 00:38:41,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21635530] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:41,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:41,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:41,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221241717] [2022-01-19 00:38:41,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:41,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:41,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:41,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:41,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:41,418 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:41,418 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 605 places, 471 transitions, 7343 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:41,418 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:41,419 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:41,419 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:42,735 INFO L129 PetriNetUnfolder]: 851/2879 cut-off events. [2022-01-19 00:38:42,735 INFO L130 PetriNetUnfolder]: For 75335/75355 co-relation queries the response was YES. [2022-01-19 00:38:42,792 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20009 conditions, 2879 events. 851/2879 cut-off events. For 75335/75355 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 22080 event pairs, 433 based on Foata normal form. 3/2785 useless extension candidates. Maximal degree in co-relation 19774. Up to 870 conditions per place. [2022-01-19 00:38:42,803 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 284 selfloop transitions, 108 changer transitions 61/594 dead transitions. [2022-01-19 00:38:42,803 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 594 transitions, 11601 flow [2022-01-19 00:38:42,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:38:42,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:38:42,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6082 transitions. [2022-01-19 00:38:42,806 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7621553884711779 [2022-01-19 00:38:42,806 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6082 transitions. [2022-01-19 00:38:42,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6082 transitions. [2022-01-19 00:38:42,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:42,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6082 transitions. [2022-01-19 00:38:42,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.05263157894737) internal successors, (6082), 38 states have internal predecessors, (6082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:42,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:42,813 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:42,813 INFO L186 Difference]: Start difference. First operand has 605 places, 471 transitions, 7343 flow. Second operand 38 states and 6082 transitions. [2022-01-19 00:38:42,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 594 transitions, 11601 flow [2022-01-19 00:38:43,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 600 places, 594 transitions, 11032 flow, removed 240 selfloop flow, removed 20 redundant places. [2022-01-19 00:38:43,201 INFO L242 Difference]: Finished difference. Result has 625 places, 486 transitions, 7846 flow [2022-01-19 00:38:43,201 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7105, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=7846, PETRI_PLACES=625, PETRI_TRANSITIONS=486} [2022-01-19 00:38:43,202 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 438 predicate places. [2022-01-19 00:38:43,202 INFO L470 AbstractCegarLoop]: Abstraction has has 625 places, 486 transitions, 7846 flow [2022-01-19 00:38:43,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:43,202 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:43,202 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:43,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-01-19 00:38:43,202 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:43,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:43,203 INFO L85 PathProgramCache]: Analyzing trace with hash 301173134, now seen corresponding path program 74 times [2022-01-19 00:38:43,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:43,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824630020] [2022-01-19 00:38:43,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:43,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:43,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:43,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:43,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824630020] [2022-01-19 00:38:43,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824630020] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:43,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:43,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:43,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753117812] [2022-01-19 00:38:43,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:43,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:43,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:43,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:43,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:43,304 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:43,305 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 625 places, 486 transitions, 7846 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:43,305 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:43,305 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:43,305 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:44,688 INFO L129 PetriNetUnfolder]: 846/2966 cut-off events. [2022-01-19 00:38:44,689 INFO L130 PetriNetUnfolder]: For 77303/77309 co-relation queries the response was YES. [2022-01-19 00:38:44,728 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20089 conditions, 2966 events. 846/2966 cut-off events. For 77303/77309 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 23085 event pairs, 471 based on Foata normal form. 1/2866 useless extension candidates. Maximal degree in co-relation 19847. Up to 870 conditions per place. [2022-01-19 00:38:44,738 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 290 selfloop transitions, 109 changer transitions 62/602 dead transitions. [2022-01-19 00:38:44,738 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 637 places, 602 transitions, 11967 flow [2022-01-19 00:38:44,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 00:38:44,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 00:38:44,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5928 transitions. [2022-01-19 00:38:44,741 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629343629343629 [2022-01-19 00:38:44,741 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5928 transitions. [2022-01-19 00:38:44,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5928 transitions. [2022-01-19 00:38:44,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:44,742 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5928 transitions. [2022-01-19 00:38:44,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.21621621621622) internal successors, (5928), 37 states have internal predecessors, (5928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:44,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:44,748 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:44,748 INFO L186 Difference]: Start difference. First operand has 625 places, 486 transitions, 7846 flow. Second operand 37 states and 5928 transitions. [2022-01-19 00:38:44,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 637 places, 602 transitions, 11967 flow [2022-01-19 00:38:45,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 602 transitions, 11444 flow, removed 185 selfloop flow, removed 22 redundant places. [2022-01-19 00:38:45,134 INFO L242 Difference]: Finished difference. Result has 639 places, 496 transitions, 8197 flow [2022-01-19 00:38:45,134 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7586, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=380, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=8197, PETRI_PLACES=639, PETRI_TRANSITIONS=496} [2022-01-19 00:38:45,135 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 452 predicate places. [2022-01-19 00:38:45,135 INFO L470 AbstractCegarLoop]: Abstraction has has 639 places, 496 transitions, 8197 flow [2022-01-19 00:38:45,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:45,135 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:45,135 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:45,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-01-19 00:38:45,135 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:45,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:45,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1062180916, now seen corresponding path program 75 times [2022-01-19 00:38:45,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:45,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021504272] [2022-01-19 00:38:45,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:45,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:45,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:45,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:45,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021504272] [2022-01-19 00:38:45,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021504272] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:45,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:45,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:45,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034399367] [2022-01-19 00:38:45,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:45,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:45,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:45,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:45,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:45,243 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:45,244 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 496 transitions, 8197 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:45,244 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:45,244 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:45,244 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:46,581 INFO L129 PetriNetUnfolder]: 860/3006 cut-off events. [2022-01-19 00:38:46,581 INFO L130 PetriNetUnfolder]: For 85929/85935 co-relation queries the response was YES. [2022-01-19 00:38:46,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20788 conditions, 3006 events. 860/3006 cut-off events. For 85929/85935 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 23610 event pairs, 450 based on Foata normal form. 1/2906 useless extension candidates. Maximal degree in co-relation 20540. Up to 870 conditions per place. [2022-01-19 00:38:46,647 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 293 selfloop transitions, 120 changer transitions 62/616 dead transitions. [2022-01-19 00:38:46,647 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 652 places, 616 transitions, 12495 flow [2022-01-19 00:38:46,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 00:38:46,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 00:38:46,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5920 transitions. [2022-01-19 00:38:46,649 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2022-01-19 00:38:46,650 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5920 transitions. [2022-01-19 00:38:46,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5920 transitions. [2022-01-19 00:38:46,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:46,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5920 transitions. [2022-01-19 00:38:46,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.0) internal successors, (5920), 37 states have internal predecessors, (5920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:46,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:46,657 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:46,657 INFO L186 Difference]: Start difference. First operand has 639 places, 496 transitions, 8197 flow. Second operand 37 states and 5920 transitions. [2022-01-19 00:38:46,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 652 places, 616 transitions, 12495 flow [2022-01-19 00:38:47,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 631 places, 616 transitions, 11963 flow, removed 196 selfloop flow, removed 21 redundant places. [2022-01-19 00:38:47,114 INFO L242 Difference]: Finished difference. Result has 656 places, 513 transitions, 8769 flow [2022-01-19 00:38:47,114 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7909, PETRI_DIFFERENCE_MINUEND_PLACES=595, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=8769, PETRI_PLACES=656, PETRI_TRANSITIONS=513} [2022-01-19 00:38:47,114 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 469 predicate places. [2022-01-19 00:38:47,114 INFO L470 AbstractCegarLoop]: Abstraction has has 656 places, 513 transitions, 8769 flow [2022-01-19 00:38:47,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:47,115 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:47,115 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:47,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-01-19 00:38:47,115 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:47,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:47,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1303378814, now seen corresponding path program 76 times [2022-01-19 00:38:47,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:47,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160867425] [2022-01-19 00:38:47,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:47,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:47,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:47,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:47,235 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:47,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160867425] [2022-01-19 00:38:47,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160867425] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:47,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:47,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:47,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726231147] [2022-01-19 00:38:47,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:47,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:47,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:47,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:47,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:47,237 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:47,237 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 656 places, 513 transitions, 8769 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:47,238 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:47,238 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:47,238 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:48,622 INFO L129 PetriNetUnfolder]: 855/2929 cut-off events. [2022-01-19 00:38:48,622 INFO L130 PetriNetUnfolder]: For 86763/86783 co-relation queries the response was YES. [2022-01-19 00:38:48,671 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20828 conditions, 2929 events. 855/2929 cut-off events. For 86763/86783 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 22811 event pairs, 415 based on Foata normal form. 3/2832 useless extension candidates. Maximal degree in co-relation 20573. Up to 870 conditions per place. [2022-01-19 00:38:48,681 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 305 selfloop transitions, 116 changer transitions 63/625 dead transitions. [2022-01-19 00:38:48,681 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 670 places, 625 transitions, 13023 flow [2022-01-19 00:38:48,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:38:48,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:38:48,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6080 transitions. [2022-01-19 00:38:48,684 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2022-01-19 00:38:48,684 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6080 transitions. [2022-01-19 00:38:48,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6080 transitions. [2022-01-19 00:38:48,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:48,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6080 transitions. [2022-01-19 00:38:48,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.0) internal successors, (6080), 38 states have internal predecessors, (6080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:48,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:48,691 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:48,691 INFO L186 Difference]: Start difference. First operand has 656 places, 513 transitions, 8769 flow. Second operand 38 states and 6080 transitions. [2022-01-19 00:38:48,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 670 places, 625 transitions, 13023 flow [2022-01-19 00:38:49,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 648 places, 625 transitions, 12440 flow, removed 231 selfloop flow, removed 22 redundant places. [2022-01-19 00:38:49,180 INFO L242 Difference]: Finished difference. Result has 671 places, 518 transitions, 8954 flow [2022-01-19 00:38:49,180 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8492, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8954, PETRI_PLACES=671, PETRI_TRANSITIONS=518} [2022-01-19 00:38:49,180 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 484 predicate places. [2022-01-19 00:38:49,180 INFO L470 AbstractCegarLoop]: Abstraction has has 671 places, 518 transitions, 8954 flow [2022-01-19 00:38:49,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:49,181 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:49,181 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:49,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-01-19 00:38:49,181 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:49,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:49,181 INFO L85 PathProgramCache]: Analyzing trace with hash -2142244812, now seen corresponding path program 77 times [2022-01-19 00:38:49,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:49,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437009799] [2022-01-19 00:38:49,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:49,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:49,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:49,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:49,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:49,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437009799] [2022-01-19 00:38:49,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437009799] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:49,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:49,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:49,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350416138] [2022-01-19 00:38:49,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:49,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:49,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:49,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:49,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:49,287 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:49,288 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 671 places, 518 transitions, 8954 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:49,288 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:49,288 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:49,288 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:50,782 INFO L129 PetriNetUnfolder]: 881/3016 cut-off events. [2022-01-19 00:38:50,783 INFO L130 PetriNetUnfolder]: For 87078/87098 co-relation queries the response was YES. [2022-01-19 00:38:50,839 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21486 conditions, 3016 events. 881/3016 cut-off events. For 87078/87098 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 23666 event pairs, 439 based on Foata normal form. 3/2922 useless extension candidates. Maximal degree in co-relation 21227. Up to 872 conditions per place. [2022-01-19 00:38:50,850 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 324 selfloop transitions, 130 changer transitions 88/683 dead transitions. [2022-01-19 00:38:50,850 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 690 places, 683 transitions, 14305 flow [2022-01-19 00:38:50,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 00:38:50,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 00:38:50,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7031 transitions. [2022-01-19 00:38:50,853 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7609307359307359 [2022-01-19 00:38:50,853 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7031 transitions. [2022-01-19 00:38:50,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7031 transitions. [2022-01-19 00:38:50,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:50,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7031 transitions. [2022-01-19 00:38:50,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.79545454545453) internal successors, (7031), 44 states have internal predecessors, (7031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:50,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:50,861 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:50,862 INFO L186 Difference]: Start difference. First operand has 671 places, 518 transitions, 8954 flow. Second operand 44 states and 7031 transitions. [2022-01-19 00:38:50,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 690 places, 683 transitions, 14305 flow [2022-01-19 00:38:51,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 670 places, 683 transitions, 13942 flow, removed 132 selfloop flow, removed 20 redundant places. [2022-01-19 00:38:51,412 INFO L242 Difference]: Finished difference. Result has 703 places, 540 transitions, 9799 flow [2022-01-19 00:38:51,412 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8705, PETRI_DIFFERENCE_MINUEND_PLACES=627, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=9799, PETRI_PLACES=703, PETRI_TRANSITIONS=540} [2022-01-19 00:38:51,412 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 516 predicate places. [2022-01-19 00:38:51,412 INFO L470 AbstractCegarLoop]: Abstraction has has 703 places, 540 transitions, 9799 flow [2022-01-19 00:38:51,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:51,412 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:51,412 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:51,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-01-19 00:38:51,413 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:51,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:51,413 INFO L85 PathProgramCache]: Analyzing trace with hash 950289242, now seen corresponding path program 78 times [2022-01-19 00:38:51,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:51,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269980197] [2022-01-19 00:38:51,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:51,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:51,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:51,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:51,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:51,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269980197] [2022-01-19 00:38:51,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269980197] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:51,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:51,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:51,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360340498] [2022-01-19 00:38:51,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:51,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:51,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:51,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:51,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:51,516 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:51,517 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 703 places, 540 transitions, 9799 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:51,517 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:51,517 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:51,517 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:52,908 INFO L129 PetriNetUnfolder]: 911/3083 cut-off events. [2022-01-19 00:38:52,908 INFO L130 PetriNetUnfolder]: For 94382/94402 co-relation queries the response was YES. [2022-01-19 00:38:52,972 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22643 conditions, 3083 events. 911/3083 cut-off events. For 94382/94402 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 24291 event pairs, 407 based on Foata normal form. 3/2993 useless extension candidates. Maximal degree in co-relation 22369. Up to 892 conditions per place. [2022-01-19 00:38:52,983 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 313 selfloop transitions, 188 changer transitions 75/717 dead transitions. [2022-01-19 00:38:52,984 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 709 places, 717 transitions, 15509 flow [2022-01-19 00:38:52,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:38:52,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:38:52,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6079 transitions. [2022-01-19 00:38:52,986 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617794486215539 [2022-01-19 00:38:52,986 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6079 transitions. [2022-01-19 00:38:52,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6079 transitions. [2022-01-19 00:38:52,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:52,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6079 transitions. [2022-01-19 00:38:52,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.97368421052633) internal successors, (6079), 38 states have internal predecessors, (6079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:52,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:52,994 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:52,994 INFO L186 Difference]: Start difference. First operand has 703 places, 540 transitions, 9799 flow. Second operand 38 states and 6079 transitions. [2022-01-19 00:38:52,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 709 places, 717 transitions, 15509 flow [2022-01-19 00:38:53,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 672 places, 717 transitions, 14862 flow, removed 191 selfloop flow, removed 37 redundant places. [2022-01-19 00:38:53,593 INFO L242 Difference]: Finished difference. Result has 697 places, 564 transitions, 10551 flow [2022-01-19 00:38:53,594 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9365, PETRI_DIFFERENCE_MINUEND_PLACES=635, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=10551, PETRI_PLACES=697, PETRI_TRANSITIONS=564} [2022-01-19 00:38:53,594 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 510 predicate places. [2022-01-19 00:38:53,594 INFO L470 AbstractCegarLoop]: Abstraction has has 697 places, 564 transitions, 10551 flow [2022-01-19 00:38:53,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:53,594 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:53,594 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:53,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-01-19 00:38:53,594 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:53,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:53,595 INFO L85 PathProgramCache]: Analyzing trace with hash 835811594, now seen corresponding path program 79 times [2022-01-19 00:38:53,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:53,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668365133] [2022-01-19 00:38:53,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:53,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:53,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:53,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:53,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668365133] [2022-01-19 00:38:53,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668365133] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:53,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:53,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:53,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250740499] [2022-01-19 00:38:53,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:53,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:53,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:53,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:53,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:53,714 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:53,714 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 697 places, 564 transitions, 10551 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:53,714 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:53,714 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:53,714 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:55,125 INFO L129 PetriNetUnfolder]: 911/3074 cut-off events. [2022-01-19 00:38:55,126 INFO L130 PetriNetUnfolder]: For 84417/84437 co-relation queries the response was YES. [2022-01-19 00:38:55,170 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22216 conditions, 3074 events. 911/3074 cut-off events. For 84417/84437 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 24176 event pairs, 450 based on Foata normal form. 3/2973 useless extension candidates. Maximal degree in co-relation 21950. Up to 905 conditions per place. [2022-01-19 00:38:55,180 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 334 selfloop transitions, 137 changer transitions 54/666 dead transitions. [2022-01-19 00:38:55,180 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 701 places, 666 transitions, 14178 flow [2022-01-19 00:38:55,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:38:55,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:38:55,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4672 transitions. [2022-01-19 00:38:55,182 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7671592775041051 [2022-01-19 00:38:55,182 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4672 transitions. [2022-01-19 00:38:55,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4672 transitions. [2022-01-19 00:38:55,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:55,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4672 transitions. [2022-01-19 00:38:55,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 161.10344827586206) internal successors, (4672), 29 states have internal predecessors, (4672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:55,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:55,188 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:55,188 INFO L186 Difference]: Start difference. First operand has 697 places, 564 transitions, 10551 flow. Second operand 29 states and 4672 transitions. [2022-01-19 00:38:55,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 701 places, 666 transitions, 14178 flow [2022-01-19 00:38:55,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 681 places, 666 transitions, 13867 flow, removed 89 selfloop flow, removed 20 redundant places. [2022-01-19 00:38:55,679 INFO L242 Difference]: Finished difference. Result has 695 places, 576 transitions, 11009 flow [2022-01-19 00:38:55,680 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10297, PETRI_DIFFERENCE_MINUEND_PLACES=653, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=11009, PETRI_PLACES=695, PETRI_TRANSITIONS=576} [2022-01-19 00:38:55,680 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 508 predicate places. [2022-01-19 00:38:55,680 INFO L470 AbstractCegarLoop]: Abstraction has has 695 places, 576 transitions, 11009 flow [2022-01-19 00:38:55,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:55,680 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:55,680 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:55,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-01-19 00:38:55,681 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:55,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:55,681 INFO L85 PathProgramCache]: Analyzing trace with hash -2111767564, now seen corresponding path program 80 times [2022-01-19 00:38:55,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:55,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043107231] [2022-01-19 00:38:55,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:55,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:55,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:55,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:55,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:55,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043107231] [2022-01-19 00:38:55,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043107231] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:55,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:55,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:55,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354847746] [2022-01-19 00:38:55,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:55,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:55,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:55,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:55,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:55,784 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:55,784 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 695 places, 576 transitions, 11009 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:55,784 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:55,784 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:55,784 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:57,130 INFO L129 PetriNetUnfolder]: 914/3093 cut-off events. [2022-01-19 00:38:57,130 INFO L130 PetriNetUnfolder]: For 86249/86269 co-relation queries the response was YES. [2022-01-19 00:38:57,189 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22427 conditions, 3093 events. 914/3093 cut-off events. For 86249/86269 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 24507 event pairs, 419 based on Foata normal form. 3/2993 useless extension candidates. Maximal degree in co-relation 22164. Up to 909 conditions per place. [2022-01-19 00:38:57,200 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 331 selfloop transitions, 159 changer transitions 59/690 dead transitions. [2022-01-19 00:38:57,200 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 710 places, 690 transitions, 14970 flow [2022-01-19 00:38:57,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:38:57,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:38:57,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4819 transitions. [2022-01-19 00:38:57,202 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7649206349206349 [2022-01-19 00:38:57,202 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4819 transitions. [2022-01-19 00:38:57,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4819 transitions. [2022-01-19 00:38:57,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:57,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4819 transitions. [2022-01-19 00:38:57,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.63333333333333) internal successors, (4819), 30 states have internal predecessors, (4819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:57,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:57,208 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:57,208 INFO L186 Difference]: Start difference. First operand has 695 places, 576 transitions, 11009 flow. Second operand 30 states and 4819 transitions. [2022-01-19 00:38:57,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 710 places, 690 transitions, 14970 flow [2022-01-19 00:38:57,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 694 places, 690 transitions, 14479 flow, removed 98 selfloop flow, removed 16 redundant places. [2022-01-19 00:38:57,781 INFO L242 Difference]: Finished difference. Result has 710 places, 595 transitions, 11622 flow [2022-01-19 00:38:57,782 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10592, PETRI_DIFFERENCE_MINUEND_PLACES=665, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=11622, PETRI_PLACES=710, PETRI_TRANSITIONS=595} [2022-01-19 00:38:57,782 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 523 predicate places. [2022-01-19 00:38:57,782 INFO L470 AbstractCegarLoop]: Abstraction has has 710 places, 595 transitions, 11622 flow [2022-01-19 00:38:57,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:57,782 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:57,782 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:57,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-01-19 00:38:57,783 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:57,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:57,783 INFO L85 PathProgramCache]: Analyzing trace with hash -361630990, now seen corresponding path program 81 times [2022-01-19 00:38:57,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:57,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463641818] [2022-01-19 00:38:57,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:57,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:57,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:57,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:57,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463641818] [2022-01-19 00:38:57,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463641818] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:57,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:57,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:38:57,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622682647] [2022-01-19 00:38:57,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:57,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:38:57,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:57,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:38:57,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:38:57,888 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:38:57,888 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 710 places, 595 transitions, 11622 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:57,888 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:57,888 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:38:57,888 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:59,306 INFO L129 PetriNetUnfolder]: 934/3213 cut-off events. [2022-01-19 00:38:59,306 INFO L130 PetriNetUnfolder]: For 90486/90492 co-relation queries the response was YES. [2022-01-19 00:38:59,366 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23415 conditions, 3213 events. 934/3213 cut-off events. For 90486/90492 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 25549 event pairs, 483 based on Foata normal form. 1/3109 useless extension candidates. Maximal degree in co-relation 23145. Up to 913 conditions per place. [2022-01-19 00:38:59,379 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 352 selfloop transitions, 154 changer transitions 58/705 dead transitions. [2022-01-19 00:38:59,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 724 places, 705 transitions, 15440 flow [2022-01-19 00:38:59,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:38:59,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:38:59,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4825 transitions. [2022-01-19 00:38:59,381 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658730158730159 [2022-01-19 00:38:59,381 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4825 transitions. [2022-01-19 00:38:59,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4825 transitions. [2022-01-19 00:38:59,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:59,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4825 transitions. [2022-01-19 00:38:59,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.83333333333334) internal successors, (4825), 30 states have internal predecessors, (4825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:59,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:59,387 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:59,387 INFO L186 Difference]: Start difference. First operand has 710 places, 595 transitions, 11622 flow. Second operand 30 states and 4825 transitions. [2022-01-19 00:38:59,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 724 places, 705 transitions, 15440 flow [2022-01-19 00:39:00,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 709 places, 705 transitions, 14865 flow, removed 125 selfloop flow, removed 15 redundant places. [2022-01-19 00:39:00,015 INFO L242 Difference]: Finished difference. Result has 724 places, 612 transitions, 11993 flow [2022-01-19 00:39:00,015 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11121, PETRI_DIFFERENCE_MINUEND_PLACES=680, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=11993, PETRI_PLACES=724, PETRI_TRANSITIONS=612} [2022-01-19 00:39:00,016 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 537 predicate places. [2022-01-19 00:39:00,016 INFO L470 AbstractCegarLoop]: Abstraction has has 724 places, 612 transitions, 11993 flow [2022-01-19 00:39:00,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:00,016 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:39:00,016 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:39:00,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-01-19 00:39:00,016 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:39:00,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:39:00,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1199248144, now seen corresponding path program 82 times [2022-01-19 00:39:00,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:39:00,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119275362] [2022-01-19 00:39:00,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:39:00,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:39:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:39:00,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:39:00,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:39:00,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119275362] [2022-01-19 00:39:00,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119275362] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:39:00,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:39:00,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:39:00,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693883112] [2022-01-19 00:39:00,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:39:00,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:39:00,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:39:00,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:39:00,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:39:00,116 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:39:00,117 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 724 places, 612 transitions, 11993 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:00,117 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:39:00,117 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:39:00,117 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:39:01,625 INFO L129 PetriNetUnfolder]: 942/3186 cut-off events. [2022-01-19 00:39:01,625 INFO L130 PetriNetUnfolder]: For 87852/87872 co-relation queries the response was YES. [2022-01-19 00:39:01,689 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23354 conditions, 3186 events. 942/3186 cut-off events. For 87852/87872 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 25472 event pairs, 431 based on Foata normal form. 3/3086 useless extension candidates. Maximal degree in co-relation 23078. Up to 913 conditions per place. [2022-01-19 00:39:01,701 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 380 selfloop transitions, 148 changer transitions 71/740 dead transitions. [2022-01-19 00:39:01,701 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 744 places, 740 transitions, 16649 flow [2022-01-19 00:39:01,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 00:39:01,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 00:39:01,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5773 transitions. [2022-01-19 00:39:01,704 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7636243386243386 [2022-01-19 00:39:01,704 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5773 transitions. [2022-01-19 00:39:01,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5773 transitions. [2022-01-19 00:39:01,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:39:01,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5773 transitions. [2022-01-19 00:39:01,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.36111111111111) internal successors, (5773), 36 states have internal predecessors, (5773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:01,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:01,711 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:01,711 INFO L186 Difference]: Start difference. First operand has 724 places, 612 transitions, 11993 flow. Second operand 36 states and 5773 transitions. [2022-01-19 00:39:01,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 744 places, 740 transitions, 16649 flow [2022-01-19 00:39:02,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 732 places, 740 transitions, 16335 flow, removed 65 selfloop flow, removed 12 redundant places. [2022-01-19 00:39:02,425 INFO L242 Difference]: Finished difference. Result has 755 places, 628 transitions, 12696 flow [2022-01-19 00:39:02,425 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11728, PETRI_DIFFERENCE_MINUEND_PLACES=697, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=12696, PETRI_PLACES=755, PETRI_TRANSITIONS=628} [2022-01-19 00:39:02,425 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 568 predicate places. [2022-01-19 00:39:02,426 INFO L470 AbstractCegarLoop]: Abstraction has has 755 places, 628 transitions, 12696 flow [2022-01-19 00:39:02,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:02,426 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:39:02,426 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:39:02,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-01-19 00:39:02,426 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:39:02,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:39:02,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1474874722, now seen corresponding path program 83 times [2022-01-19 00:39:02,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:39:02,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467121622] [2022-01-19 00:39:02,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:39:02,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:39:02,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:39:02,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:39:02,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:39:02,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467121622] [2022-01-19 00:39:02,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467121622] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:39:02,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:39:02,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:39:02,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429731989] [2022-01-19 00:39:02,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:39:02,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:39:02,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:39:02,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:39:02,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:39:02,531 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:39:02,531 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 755 places, 628 transitions, 12696 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:02,531 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:39:02,532 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:39:02,532 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:39:04,017 INFO L129 PetriNetUnfolder]: 929/3218 cut-off events. [2022-01-19 00:39:04,017 INFO L130 PetriNetUnfolder]: For 91226/91232 co-relation queries the response was YES. [2022-01-19 00:39:04,083 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23398 conditions, 3218 events. 929/3218 cut-off events. For 91226/91232 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 25677 event pairs, 466 based on Foata normal form. 1/3111 useless extension candidates. Maximal degree in co-relation 23108. Up to 924 conditions per place. [2022-01-19 00:39:04,095 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 367 selfloop transitions, 138 changer transitions 57/703 dead transitions. [2022-01-19 00:39:04,096 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 762 places, 703 transitions, 15883 flow [2022-01-19 00:39:04,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:39:04,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:39:04,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4819 transitions. [2022-01-19 00:39:04,098 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7649206349206349 [2022-01-19 00:39:04,098 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4819 transitions. [2022-01-19 00:39:04,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4819 transitions. [2022-01-19 00:39:04,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:39:04,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4819 transitions. [2022-01-19 00:39:04,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.63333333333333) internal successors, (4819), 30 states have internal predecessors, (4819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:04,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:04,104 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:04,104 INFO L186 Difference]: Start difference. First operand has 755 places, 628 transitions, 12696 flow. Second operand 30 states and 4819 transitions. [2022-01-19 00:39:04,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 762 places, 703 transitions, 15883 flow [2022-01-19 00:39:04,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 739 places, 703 transitions, 15241 flow, removed 202 selfloop flow, removed 23 redundant places. [2022-01-19 00:39:04,811 INFO L242 Difference]: Finished difference. Result has 751 places, 616 transitions, 12277 flow [2022-01-19 00:39:04,811 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12278, PETRI_DIFFERENCE_MINUEND_PLACES=710, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=12277, PETRI_PLACES=751, PETRI_TRANSITIONS=616} [2022-01-19 00:39:04,811 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 564 predicate places. [2022-01-19 00:39:04,811 INFO L470 AbstractCegarLoop]: Abstraction has has 751 places, 616 transitions, 12277 flow [2022-01-19 00:39:04,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:04,812 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:39:04,812 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:39:04,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-01-19 00:39:04,812 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:39:04,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:39:04,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1718307320, now seen corresponding path program 84 times [2022-01-19 00:39:04,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:39:04,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959912631] [2022-01-19 00:39:04,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:39:04,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:39:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:39:04,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:39:04,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:39:04,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959912631] [2022-01-19 00:39:04,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959912631] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:39:04,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:39:04,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:39:04,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900728766] [2022-01-19 00:39:04,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:39:04,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:39:04,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:39:04,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:39:04,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:39:04,920 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:39:04,921 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 751 places, 616 transitions, 12277 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:04,921 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:39:04,921 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:39:04,921 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:39:06,332 INFO L129 PetriNetUnfolder]: 939/3241 cut-off events. [2022-01-19 00:39:06,332 INFO L130 PetriNetUnfolder]: For 85672/85678 co-relation queries the response was YES. [2022-01-19 00:39:06,393 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23374 conditions, 3241 events. 939/3241 cut-off events. For 85672/85678 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 26046 event pairs, 484 based on Foata normal form. 1/3134 useless extension candidates. Maximal degree in co-relation 23091. Up to 926 conditions per place. [2022-01-19 00:39:06,404 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 357 selfloop transitions, 163 changer transitions 55/716 dead transitions. [2022-01-19 00:39:06,404 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 753 places, 716 transitions, 15870 flow [2022-01-19 00:39:06,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:39:06,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:39:06,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4829 transitions. [2022-01-19 00:39:06,406 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7665079365079365 [2022-01-19 00:39:06,406 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4829 transitions. [2022-01-19 00:39:06,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4829 transitions. [2022-01-19 00:39:06,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:39:06,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4829 transitions. [2022-01-19 00:39:06,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.96666666666667) internal successors, (4829), 30 states have internal predecessors, (4829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:06,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:06,412 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:06,412 INFO L186 Difference]: Start difference. First operand has 751 places, 616 transitions, 12277 flow. Second operand 30 states and 4829 transitions. [2022-01-19 00:39:06,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 753 places, 716 transitions, 15870 flow [2022-01-19 00:39:07,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 724 places, 716 transitions, 15389 flow, removed 39 selfloop flow, removed 29 redundant places. [2022-01-19 00:39:07,044 INFO L242 Difference]: Finished difference. Result has 739 places, 632 transitions, 12755 flow [2022-01-19 00:39:07,045 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11867, PETRI_DIFFERENCE_MINUEND_PLACES=695, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=12755, PETRI_PLACES=739, PETRI_TRANSITIONS=632} [2022-01-19 00:39:07,045 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 552 predicate places. [2022-01-19 00:39:07,045 INFO L470 AbstractCegarLoop]: Abstraction has has 739 places, 632 transitions, 12755 flow [2022-01-19 00:39:07,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:07,045 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:39:07,045 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:39:07,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-01-19 00:39:07,046 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:39:07,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:39:07,046 INFO L85 PathProgramCache]: Analyzing trace with hash -748239972, now seen corresponding path program 85 times [2022-01-19 00:39:07,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:39:07,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93883625] [2022-01-19 00:39:07,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:39:07,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:39:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:39:07,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:39:07,155 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:39:07,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93883625] [2022-01-19 00:39:07,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93883625] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:39:07,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:39:07,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:39:07,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401216678] [2022-01-19 00:39:07,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:39:07,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:39:07,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:39:07,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:39:07,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:39:07,157 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:39:07,157 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 739 places, 632 transitions, 12755 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:07,157 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:39:07,157 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:39:07,157 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:39:08,612 INFO L129 PetriNetUnfolder]: 943/3177 cut-off events. [2022-01-19 00:39:08,612 INFO L130 PetriNetUnfolder]: For 83522/83542 co-relation queries the response was YES. [2022-01-19 00:39:08,678 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23388 conditions, 3177 events. 943/3177 cut-off events. For 83522/83542 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 25343 event pairs, 448 based on Foata normal form. 3/3072 useless extension candidates. Maximal degree in co-relation 23108. Up to 930 conditions per place. [2022-01-19 00:39:08,691 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 353 selfloop transitions, 173 changer transitions 55/722 dead transitions. [2022-01-19 00:39:08,691 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 752 places, 722 transitions, 16154 flow [2022-01-19 00:39:08,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:39:08,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:39:08,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4670 transitions. [2022-01-19 00:39:08,787 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7668308702791461 [2022-01-19 00:39:08,787 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4670 transitions. [2022-01-19 00:39:08,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4670 transitions. [2022-01-19 00:39:08,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:39:08,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4670 transitions. [2022-01-19 00:39:08,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 161.0344827586207) internal successors, (4670), 29 states have internal predecessors, (4670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:08,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:08,793 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:08,793 INFO L186 Difference]: Start difference. First operand has 739 places, 632 transitions, 12755 flow. Second operand 29 states and 4670 transitions. [2022-01-19 00:39:08,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 752 places, 722 transitions, 16154 flow [2022-01-19 00:39:09,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 741 places, 722 transitions, 15748 flow, removed 114 selfloop flow, removed 11 redundant places. [2022-01-19 00:39:09,395 INFO L242 Difference]: Finished difference. Result has 755 places, 643 transitions, 13183 flow [2022-01-19 00:39:09,395 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12458, PETRI_DIFFERENCE_MINUEND_PLACES=713, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=13183, PETRI_PLACES=755, PETRI_TRANSITIONS=643} [2022-01-19 00:39:09,395 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 568 predicate places. [2022-01-19 00:39:09,395 INFO L470 AbstractCegarLoop]: Abstraction has has 755 places, 643 transitions, 13183 flow [2022-01-19 00:39:09,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:09,396 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:39:09,396 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:39:09,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-01-19 00:39:09,396 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:39:09,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:39:09,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1659146500, now seen corresponding path program 86 times [2022-01-19 00:39:09,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:39:09,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570402936] [2022-01-19 00:39:09,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:39:09,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:39:09,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:39:09,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:39:09,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:39:09,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570402936] [2022-01-19 00:39:09,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570402936] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:39:09,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:39:09,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:39:09,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819275514] [2022-01-19 00:39:09,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:39:09,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:39:09,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:39:09,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:39:09,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:39:09,504 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:39:09,504 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 755 places, 643 transitions, 13183 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:09,504 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:39:09,504 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:39:09,505 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:39:10,948 INFO L129 PetriNetUnfolder]: 936/3169 cut-off events. [2022-01-19 00:39:10,948 INFO L130 PetriNetUnfolder]: For 84331/84351 co-relation queries the response was YES. [2022-01-19 00:39:11,013 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23245 conditions, 3169 events. 936/3169 cut-off events. For 84331/84351 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 25329 event pairs, 429 based on Foata normal form. 3/3065 useless extension candidates. Maximal degree in co-relation 22959. Up to 932 conditions per place. [2022-01-19 00:39:11,025 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 390 selfloop transitions, 148 changer transitions 57/736 dead transitions. [2022-01-19 00:39:11,025 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 769 places, 736 transitions, 16710 flow [2022-01-19 00:39:11,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:39:11,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:39:11,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4668 transitions. [2022-01-19 00:39:11,028 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7665024630541872 [2022-01-19 00:39:11,028 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4668 transitions. [2022-01-19 00:39:11,028 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4668 transitions. [2022-01-19 00:39:11,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:39:11,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4668 transitions. [2022-01-19 00:39:11,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.9655172413793) internal successors, (4668), 29 states have internal predecessors, (4668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:11,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:11,033 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:11,033 INFO L186 Difference]: Start difference. First operand has 755 places, 643 transitions, 13183 flow. Second operand 29 states and 4668 transitions. [2022-01-19 00:39:11,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 769 places, 736 transitions, 16710 flow [2022-01-19 00:39:11,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 756 places, 736 transitions, 16380 flow, removed 53 selfloop flow, removed 13 redundant places. [2022-01-19 00:39:11,719 INFO L242 Difference]: Finished difference. Result has 769 places, 649 transitions, 13397 flow [2022-01-19 00:39:11,720 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12880, PETRI_DIFFERENCE_MINUEND_PLACES=728, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=13397, PETRI_PLACES=769, PETRI_TRANSITIONS=649} [2022-01-19 00:39:11,720 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 582 predicate places. [2022-01-19 00:39:11,720 INFO L470 AbstractCegarLoop]: Abstraction has has 769 places, 649 transitions, 13397 flow [2022-01-19 00:39:11,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:11,720 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:39:11,720 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:39:11,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-01-19 00:39:11,720 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:39:11,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:39:11,721 INFO L85 PathProgramCache]: Analyzing trace with hash -809966992, now seen corresponding path program 87 times [2022-01-19 00:39:11,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:39:11,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912333459] [2022-01-19 00:39:11,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:39:11,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:39:11,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:39:11,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:39:11,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:39:11,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912333459] [2022-01-19 00:39:11,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912333459] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:39:11,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:39:11,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:39:11,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888558130] [2022-01-19 00:39:11,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:39:11,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:39:11,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:39:11,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:39:11,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:39:11,845 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:39:11,846 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 769 places, 649 transitions, 13397 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:11,846 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:39:11,846 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:39:11,846 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:39:13,384 INFO L129 PetriNetUnfolder]: 939/3266 cut-off events. [2022-01-19 00:39:13,385 INFO L130 PetriNetUnfolder]: For 88164/88170 co-relation queries the response was YES. [2022-01-19 00:39:13,452 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23607 conditions, 3266 events. 939/3266 cut-off events. For 88164/88170 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 26308 event pairs, 458 based on Foata normal form. 1/3156 useless extension candidates. Maximal degree in co-relation 23316. Up to 934 conditions per place. [2022-01-19 00:39:13,465 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 371 selfloop transitions, 178 changer transitions 56/746 dead transitions. [2022-01-19 00:39:13,465 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 783 places, 746 transitions, 17071 flow [2022-01-19 00:39:13,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:39:13,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:39:13,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4664 transitions. [2022-01-19 00:39:13,468 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658456486042693 [2022-01-19 00:39:13,468 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4664 transitions. [2022-01-19 00:39:13,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4664 transitions. [2022-01-19 00:39:13,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:39:13,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4664 transitions. [2022-01-19 00:39:13,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.82758620689654) internal successors, (4664), 29 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:13,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:13,473 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:13,473 INFO L186 Difference]: Start difference. First operand has 769 places, 649 transitions, 13397 flow. Second operand 29 states and 4664 transitions. [2022-01-19 00:39:13,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 783 places, 746 transitions, 17071 flow [2022-01-19 00:39:14,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 766 places, 746 transitions, 16646 flow, removed 96 selfloop flow, removed 17 redundant places. [2022-01-19 00:39:14,180 INFO L242 Difference]: Finished difference. Result has 780 places, 660 transitions, 13779 flow [2022-01-19 00:39:14,180 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13041, PETRI_DIFFERENCE_MINUEND_PLACES=738, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=13779, PETRI_PLACES=780, PETRI_TRANSITIONS=660} [2022-01-19 00:39:14,181 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 593 predicate places. [2022-01-19 00:39:14,181 INFO L470 AbstractCegarLoop]: Abstraction has has 780 places, 660 transitions, 13779 flow [2022-01-19 00:39:14,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:14,181 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:39:14,181 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:39:14,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2022-01-19 00:39:14,181 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:39:14,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:39:14,181 INFO L85 PathProgramCache]: Analyzing trace with hash 145920860, now seen corresponding path program 88 times [2022-01-19 00:39:14,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:39:14,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464743119] [2022-01-19 00:39:14,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:39:14,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:39:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:39:14,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:39:14,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:39:14,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464743119] [2022-01-19 00:39:14,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464743119] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:39:14,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:39:14,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:39:14,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728406551] [2022-01-19 00:39:14,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:39:14,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:39:14,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:39:14,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:39:14,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:39:14,286 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:39:14,287 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 780 places, 660 transitions, 13779 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:14,287 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:39:14,287 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:39:14,287 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:39:15,730 INFO L129 PetriNetUnfolder]: 940/3189 cut-off events. [2022-01-19 00:39:15,730 INFO L130 PetriNetUnfolder]: For 88570/88590 co-relation queries the response was YES. [2022-01-19 00:39:15,798 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23614 conditions, 3189 events. 940/3189 cut-off events. For 88570/88590 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 25433 event pairs, 432 based on Foata normal form. 3/3085 useless extension candidates. Maximal degree in co-relation 23320. Up to 937 conditions per place. [2022-01-19 00:39:15,811 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 408 selfloop transitions, 151 changer transitions 58/758 dead transitions. [2022-01-19 00:39:15,811 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 793 places, 758 transitions, 17570 flow [2022-01-19 00:39:15,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 00:39:15,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 00:39:15,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4511 transitions. [2022-01-19 00:39:15,813 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7671768707482993 [2022-01-19 00:39:15,813 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4511 transitions. [2022-01-19 00:39:15,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4511 transitions. [2022-01-19 00:39:15,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:39:15,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4511 transitions. [2022-01-19 00:39:15,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 161.10714285714286) internal successors, (4511), 28 states have internal predecessors, (4511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:15,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:15,818 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:15,818 INFO L186 Difference]: Start difference. First operand has 780 places, 660 transitions, 13779 flow. Second operand 28 states and 4511 transitions. [2022-01-19 00:39:15,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 793 places, 758 transitions, 17570 flow [2022-01-19 00:39:16,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 780 places, 758 transitions, 17157 flow, removed 70 selfloop flow, removed 13 redundant places. [2022-01-19 00:39:16,546 INFO L242 Difference]: Finished difference. Result has 792 places, 668 transitions, 13980 flow [2022-01-19 00:39:16,546 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13412, PETRI_DIFFERENCE_MINUEND_PLACES=753, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=13980, PETRI_PLACES=792, PETRI_TRANSITIONS=668} [2022-01-19 00:39:16,547 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 605 predicate places. [2022-01-19 00:39:16,547 INFO L470 AbstractCegarLoop]: Abstraction has has 792 places, 668 transitions, 13980 flow [2022-01-19 00:39:16,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:16,547 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:39:16,547 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:39:16,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-01-19 00:39:16,547 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:39:16,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:39:16,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1583574768, now seen corresponding path program 89 times [2022-01-19 00:39:16,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:39:16,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693847872] [2022-01-19 00:39:16,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:39:16,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:39:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:39:16,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:39:16,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:39:16,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693847872] [2022-01-19 00:39:16,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693847872] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:39:16,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:39:16,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:39:16,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266879125] [2022-01-19 00:39:16,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:39:16,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:39:16,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:39:16,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:39:16,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:39:16,669 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:39:16,670 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 792 places, 668 transitions, 13980 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:16,670 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:39:16,670 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:39:16,670 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:39:18,094 INFO L129 PetriNetUnfolder]: 960/3234 cut-off events. [2022-01-19 00:39:18,094 INFO L130 PetriNetUnfolder]: For 92213/92233 co-relation queries the response was YES. [2022-01-19 00:39:18,162 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24328 conditions, 3234 events. 960/3234 cut-off events. For 92213/92233 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 25903 event pairs, 437 based on Foata normal form. 3/3131 useless extension candidates. Maximal degree in co-relation 24030. Up to 942 conditions per place. [2022-01-19 00:39:18,174 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 357 selfloop transitions, 217 changer transitions 54/769 dead transitions. [2022-01-19 00:39:18,174 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 808 places, 769 transitions, 17881 flow [2022-01-19 00:39:18,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:39:18,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:39:18,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4821 transitions. [2022-01-19 00:39:18,177 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7652380952380953 [2022-01-19 00:39:18,177 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4821 transitions. [2022-01-19 00:39:18,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4821 transitions. [2022-01-19 00:39:18,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:39:18,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4821 transitions. [2022-01-19 00:39:18,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.7) internal successors, (4821), 30 states have internal predecessors, (4821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:18,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:18,182 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:18,182 INFO L186 Difference]: Start difference. First operand has 792 places, 668 transitions, 13980 flow. Second operand 30 states and 4821 transitions. [2022-01-19 00:39:18,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 808 places, 769 transitions, 17881 flow [2022-01-19 00:39:18,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 793 places, 769 transitions, 17516 flow, removed 56 selfloop flow, removed 15 redundant places. [2022-01-19 00:39:18,940 INFO L242 Difference]: Finished difference. Result has 809 places, 685 transitions, 14790 flow [2022-01-19 00:39:18,940 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13657, PETRI_DIFFERENCE_MINUEND_PLACES=764, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=14790, PETRI_PLACES=809, PETRI_TRANSITIONS=685} [2022-01-19 00:39:18,941 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 622 predicate places. [2022-01-19 00:39:18,941 INFO L470 AbstractCegarLoop]: Abstraction has has 809 places, 685 transitions, 14790 flow [2022-01-19 00:39:18,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:18,941 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:39:18,941 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:39:18,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-01-19 00:39:18,941 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:39:18,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:39:18,942 INFO L85 PathProgramCache]: Analyzing trace with hash -993283182, now seen corresponding path program 90 times [2022-01-19 00:39:18,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:39:18,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692374565] [2022-01-19 00:39:18,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:39:18,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:39:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:39:19,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:39:19,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:39:19,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692374565] [2022-01-19 00:39:19,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692374565] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:39:19,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:39:19,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:39:19,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956630283] [2022-01-19 00:39:19,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:39:19,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:39:19,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:39:19,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:39:19,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:39:19,056 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:39:19,056 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 809 places, 685 transitions, 14790 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:19,056 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:39:19,056 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:39:19,056 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:39:20,508 INFO L129 PetriNetUnfolder]: 955/3323 cut-off events. [2022-01-19 00:39:20,508 INFO L130 PetriNetUnfolder]: For 99254/99260 co-relation queries the response was YES. [2022-01-19 00:39:20,671 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24619 conditions, 3323 events. 955/3323 cut-off events. For 99254/99260 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 27026 event pairs, 439 based on Foata normal form. 1/3218 useless extension candidates. Maximal degree in co-relation 24314. Up to 946 conditions per place. [2022-01-19 00:39:20,682 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 373 selfloop transitions, 217 changer transitions 60/791 dead transitions. [2022-01-19 00:39:20,683 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 820 places, 791 transitions, 18989 flow [2022-01-19 00:39:20,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 00:39:20,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 00:39:20,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4344 transitions. [2022-01-19 00:39:20,685 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7661375661375661 [2022-01-19 00:39:20,685 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4344 transitions. [2022-01-19 00:39:20,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4344 transitions. [2022-01-19 00:39:20,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:39:20,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4344 transitions. [2022-01-19 00:39:20,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.88888888888889) internal successors, (4344), 27 states have internal predecessors, (4344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:20,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:20,690 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:20,690 INFO L186 Difference]: Start difference. First operand has 809 places, 685 transitions, 14790 flow. Second operand 27 states and 4344 transitions. [2022-01-19 00:39:20,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 820 places, 791 transitions, 18989 flow [2022-01-19 00:39:21,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 807 places, 791 transitions, 18392 flow, removed 191 selfloop flow, removed 13 redundant places. [2022-01-19 00:39:21,466 INFO L242 Difference]: Finished difference. Result has 817 places, 689 transitions, 14909 flow [2022-01-19 00:39:21,466 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14333, PETRI_DIFFERENCE_MINUEND_PLACES=781, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=685, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=14909, PETRI_PLACES=817, PETRI_TRANSITIONS=689} [2022-01-19 00:39:21,467 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 630 predicate places. [2022-01-19 00:39:21,467 INFO L470 AbstractCegarLoop]: Abstraction has has 817 places, 689 transitions, 14909 flow [2022-01-19 00:39:21,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:21,467 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:39:21,467 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:39:21,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-01-19 00:39:21,467 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:39:21,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:39:21,468 INFO L85 PathProgramCache]: Analyzing trace with hash 292811292, now seen corresponding path program 91 times [2022-01-19 00:39:21,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:39:21,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19259336] [2022-01-19 00:39:21,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:39:21,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:39:21,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:39:21,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:39:21,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:39:21,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19259336] [2022-01-19 00:39:21,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19259336] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:39:21,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:39:21,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:39:21,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60992924] [2022-01-19 00:39:21,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:39:21,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:39:21,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:39:21,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:39:21,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:39:21,580 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:39:21,581 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 817 places, 689 transitions, 14909 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:21,581 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:39:21,581 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:39:21,581 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:39:23,033 INFO L129 PetriNetUnfolder]: 934/3163 cut-off events. [2022-01-19 00:39:23,034 INFO L130 PetriNetUnfolder]: For 92427/92447 co-relation queries the response was YES. [2022-01-19 00:39:23,101 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23809 conditions, 3163 events. 934/3163 cut-off events. For 92427/92447 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 25150 event pairs, 419 based on Foata normal form. 3/3060 useless extension candidates. Maximal degree in co-relation 23503. Up to 943 conditions per place. [2022-01-19 00:39:23,113 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 420 selfloop transitions, 132 changer transitions 61/754 dead transitions. [2022-01-19 00:39:23,113 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 834 places, 754 transitions, 17895 flow [2022-01-19 00:39:23,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:39:23,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:39:23,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4813 transitions. [2022-01-19 00:39:23,116 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763968253968254 [2022-01-19 00:39:23,116 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4813 transitions. [2022-01-19 00:39:23,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4813 transitions. [2022-01-19 00:39:23,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:39:23,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4813 transitions. [2022-01-19 00:39:23,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:23,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:23,121 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:23,121 INFO L186 Difference]: Start difference. First operand has 817 places, 689 transitions, 14909 flow. Second operand 30 states and 4813 transitions. [2022-01-19 00:39:23,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 834 places, 754 transitions, 17895 flow [2022-01-19 00:39:23,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 814 places, 754 transitions, 17270 flow, removed 75 selfloop flow, removed 20 redundant places. [2022-01-19 00:39:23,907 INFO L242 Difference]: Finished difference. Result has 823 places, 662 transitions, 13894 flow [2022-01-19 00:39:23,908 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14338, PETRI_DIFFERENCE_MINUEND_PLACES=785, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=13894, PETRI_PLACES=823, PETRI_TRANSITIONS=662} [2022-01-19 00:39:23,908 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 636 predicate places. [2022-01-19 00:39:23,908 INFO L470 AbstractCegarLoop]: Abstraction has has 823 places, 662 transitions, 13894 flow [2022-01-19 00:39:23,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:23,908 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:39:23,908 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:39:23,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2022-01-19 00:39:23,908 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:39:23,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:39:23,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1500848246, now seen corresponding path program 92 times [2022-01-19 00:39:23,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:39:23,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961901824] [2022-01-19 00:39:23,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:39:23,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:39:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:39:24,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:39:24,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:39:24,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961901824] [2022-01-19 00:39:24,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961901824] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:39:24,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:39:24,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:39:24,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022603162] [2022-01-19 00:39:24,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:39:24,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:39:24,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:39:24,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:39:24,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:39:24,020 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:39:24,021 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 823 places, 662 transitions, 13894 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:24,021 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:39:24,021 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:39:24,021 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:39:25,644 INFO L129 PetriNetUnfolder]: 951/3245 cut-off events. [2022-01-19 00:39:25,644 INFO L130 PetriNetUnfolder]: For 96091/96111 co-relation queries the response was YES. [2022-01-19 00:39:25,706 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24174 conditions, 3245 events. 951/3245 cut-off events. For 96091/96111 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 26104 event pairs, 416 based on Foata normal form. 3/3145 useless extension candidates. Maximal degree in co-relation 23870. Up to 921 conditions per place. [2022-01-19 00:39:25,717 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 405 selfloop transitions, 181 changer transitions 91/818 dead transitions. [2022-01-19 00:39:25,717 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 830 places, 818 transitions, 19702 flow [2022-01-19 00:39:25,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-19 00:39:25,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-01-19 00:39:25,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6866 transitions. [2022-01-19 00:39:25,720 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7603543743078627 [2022-01-19 00:39:25,720 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6866 transitions. [2022-01-19 00:39:25,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6866 transitions. [2022-01-19 00:39:25,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:39:25,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6866 transitions. [2022-01-19 00:39:25,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 159.67441860465115) internal successors, (6866), 43 states have internal predecessors, (6866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:25,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:25,728 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:25,728 INFO L186 Difference]: Start difference. First operand has 823 places, 662 transitions, 13894 flow. Second operand 43 states and 6866 transitions. [2022-01-19 00:39:25,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 830 places, 818 transitions, 19702 flow [2022-01-19 00:39:26,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 802 places, 818 transitions, 18929 flow, removed 49 selfloop flow, removed 28 redundant places. [2022-01-19 00:39:26,450 INFO L242 Difference]: Finished difference. Result has 834 places, 679 transitions, 14604 flow [2022-01-19 00:39:26,450 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13409, PETRI_DIFFERENCE_MINUEND_PLACES=760, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=662, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=14604, PETRI_PLACES=834, PETRI_TRANSITIONS=679} [2022-01-19 00:39:26,450 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 647 predicate places. [2022-01-19 00:39:26,450 INFO L470 AbstractCegarLoop]: Abstraction has has 834 places, 679 transitions, 14604 flow [2022-01-19 00:39:26,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:26,451 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:39:26,451 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:39:26,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-01-19 00:39:26,451 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:39:26,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:39:26,451 INFO L85 PathProgramCache]: Analyzing trace with hash 544131094, now seen corresponding path program 93 times [2022-01-19 00:39:26,451 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:39:26,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730447450] [2022-01-19 00:39:26,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:39:26,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:39:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:39:26,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:39:26,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:39:26,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730447450] [2022-01-19 00:39:26,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730447450] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:39:26,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:39:26,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:39:26,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174624185] [2022-01-19 00:39:26,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:39:26,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:39:26,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:39:26,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:39:26,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:39:26,552 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:39:26,553 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 834 places, 679 transitions, 14604 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:26,553 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:39:26,553 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:39:26,553 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:39:28,023 INFO L129 PetriNetUnfolder]: 949/3302 cut-off events. [2022-01-19 00:39:28,023 INFO L130 PetriNetUnfolder]: For 98131/98137 co-relation queries the response was YES. [2022-01-19 00:39:28,097 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24497 conditions, 3302 events. 949/3302 cut-off events. For 98131/98137 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 26688 event pairs, 461 based on Foata normal form. 1/3195 useless extension candidates. Maximal degree in co-relation 24177. Up to 966 conditions per place. [2022-01-19 00:39:28,109 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 403 selfloop transitions, 175 changer transitions 55/774 dead transitions. [2022-01-19 00:39:28,109 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 832 places, 774 transitions, 18615 flow [2022-01-19 00:39:28,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:39:28,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:39:28,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4666 transitions. [2022-01-19 00:39:28,111 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7661740558292283 [2022-01-19 00:39:28,111 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4666 transitions. [2022-01-19 00:39:28,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4666 transitions. [2022-01-19 00:39:28,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:39:28,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4666 transitions. [2022-01-19 00:39:28,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.89655172413794) internal successors, (4666), 29 states have internal predecessors, (4666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:28,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:28,117 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:28,117 INFO L186 Difference]: Start difference. First operand has 834 places, 679 transitions, 14604 flow. Second operand 29 states and 4666 transitions. [2022-01-19 00:39:28,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 832 places, 774 transitions, 18615 flow [2022-01-19 00:39:28,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 796 places, 774 transitions, 17703 flow, removed 274 selfloop flow, removed 36 redundant places. [2022-01-19 00:39:28,899 INFO L242 Difference]: Finished difference. Result has 810 places, 691 transitions, 14867 flow [2022-01-19 00:39:28,899 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14085, PETRI_DIFFERENCE_MINUEND_PLACES=768, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=14867, PETRI_PLACES=810, PETRI_TRANSITIONS=691} [2022-01-19 00:39:28,899 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 623 predicate places. [2022-01-19 00:39:28,899 INFO L470 AbstractCegarLoop]: Abstraction has has 810 places, 691 transitions, 14867 flow [2022-01-19 00:39:28,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:28,900 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:39:28,900 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:39:28,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-01-19 00:39:28,900 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:39:28,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:39:28,900 INFO L85 PathProgramCache]: Analyzing trace with hash 480670358, now seen corresponding path program 94 times [2022-01-19 00:39:28,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:39:28,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392330292] [2022-01-19 00:39:28,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:39:28,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:39:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:39:28,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:39:28,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:39:28,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392330292] [2022-01-19 00:39:28,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392330292] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:39:28,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:39:28,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:39:28,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036021044] [2022-01-19 00:39:28,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:39:28,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:39:28,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:39:28,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:39:28,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:39:28,996 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:39:28,996 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 810 places, 691 transitions, 14867 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:28,996 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:39:28,996 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:39:28,996 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:39:30,373 INFO L129 PetriNetUnfolder]: 921/3139 cut-off events. [2022-01-19 00:39:30,373 INFO L130 PetriNetUnfolder]: For 85585/85605 co-relation queries the response was YES. [2022-01-19 00:39:30,438 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22952 conditions, 3139 events. 921/3139 cut-off events. For 85585/85605 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 25024 event pairs, 402 based on Foata normal form. 3/3037 useless extension candidates. Maximal degree in co-relation 22650. Up to 964 conditions per place. [2022-01-19 00:39:30,448 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 362 selfloop transitions, 199 changer transitions 64/766 dead transitions. [2022-01-19 00:39:30,449 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 825 places, 766 transitions, 17906 flow [2022-01-19 00:39:30,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:39:30,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:39:30,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4802 transitions. [2022-01-19 00:39:30,451 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7622222222222222 [2022-01-19 00:39:30,451 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4802 transitions. [2022-01-19 00:39:30,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4802 transitions. [2022-01-19 00:39:30,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:39:30,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4802 transitions. [2022-01-19 00:39:30,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.06666666666666) internal successors, (4802), 30 states have internal predecessors, (4802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:30,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:30,457 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:30,457 INFO L186 Difference]: Start difference. First operand has 810 places, 691 transitions, 14867 flow. Second operand 30 states and 4802 transitions. [2022-01-19 00:39:30,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 825 places, 766 transitions, 17906 flow [2022-01-19 00:39:31,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 812 places, 766 transitions, 17532 flow, removed 79 selfloop flow, removed 13 redundant places. [2022-01-19 00:39:31,169 INFO L242 Difference]: Finished difference. Result has 823 places, 657 transitions, 13962 flow [2022-01-19 00:39:31,169 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14522, PETRI_DIFFERENCE_MINUEND_PLACES=783, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=13962, PETRI_PLACES=823, PETRI_TRANSITIONS=657} [2022-01-19 00:39:31,169 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 636 predicate places. [2022-01-19 00:39:31,169 INFO L470 AbstractCegarLoop]: Abstraction has has 823 places, 657 transitions, 13962 flow [2022-01-19 00:39:31,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:31,170 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:39:31,170 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:39:31,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-01-19 00:39:31,170 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:39:31,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:39:31,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1195198250, now seen corresponding path program 95 times [2022-01-19 00:39:31,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:39:31,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675236928] [2022-01-19 00:39:31,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:39:31,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:39:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:39:31,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:39:31,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:39:31,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675236928] [2022-01-19 00:39:31,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675236928] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:39:31,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:39:31,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:39:31,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045314260] [2022-01-19 00:39:31,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:39:31,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:39:31,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:39:31,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:39:31,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:39:31,278 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:39:31,279 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 823 places, 657 transitions, 13962 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:31,279 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:39:31,279 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:39:31,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:39:32,807 INFO L129 PetriNetUnfolder]: 953/3241 cut-off events. [2022-01-19 00:39:32,808 INFO L130 PetriNetUnfolder]: For 93708/93728 co-relation queries the response was YES. [2022-01-19 00:39:32,876 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24195 conditions, 3241 events. 953/3241 cut-off events. For 93708/93728 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 26056 event pairs, 423 based on Foata normal form. 3/3138 useless extension candidates. Maximal degree in co-relation 23890. Up to 966 conditions per place. [2022-01-19 00:39:32,888 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 396 selfloop transitions, 179 changer transitions 69/785 dead transitions. [2022-01-19 00:39:32,888 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 819 places, 785 transitions, 18694 flow [2022-01-19 00:39:32,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:39:32,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:39:32,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6082 transitions. [2022-01-19 00:39:32,891 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7621553884711779 [2022-01-19 00:39:32,891 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6082 transitions. [2022-01-19 00:39:32,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6082 transitions. [2022-01-19 00:39:32,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:39:32,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6082 transitions. [2022-01-19 00:39:32,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.05263157894737) internal successors, (6082), 38 states have internal predecessors, (6082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:32,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:32,999 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:32,999 INFO L186 Difference]: Start difference. First operand has 823 places, 657 transitions, 13962 flow. Second operand 38 states and 6082 transitions. [2022-01-19 00:39:32,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 819 places, 785 transitions, 18694 flow [2022-01-19 00:39:33,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 787 places, 785 transitions, 17659 flow, removed 42 selfloop flow, removed 32 redundant places. [2022-01-19 00:39:33,683 INFO L242 Difference]: Finished difference. Result has 810 places, 677 transitions, 14260 flow [2022-01-19 00:39:33,683 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13131, PETRI_DIFFERENCE_MINUEND_PLACES=750, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=657, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=14260, PETRI_PLACES=810, PETRI_TRANSITIONS=677} [2022-01-19 00:39:33,684 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 623 predicate places. [2022-01-19 00:39:33,684 INFO L470 AbstractCegarLoop]: Abstraction has has 810 places, 677 transitions, 14260 flow [2022-01-19 00:39:33,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:33,684 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:39:33,684 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:39:33,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-01-19 00:39:33,684 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:39:33,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:39:33,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1704849108, now seen corresponding path program 96 times [2022-01-19 00:39:33,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:39:33,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524127979] [2022-01-19 00:39:33,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:39:33,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:39:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:39:33,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:39:33,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:39:33,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524127979] [2022-01-19 00:39:33,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524127979] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:39:33,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:39:33,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:39:33,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537889072] [2022-01-19 00:39:33,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:39:33,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:39:33,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:39:33,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:39:33,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:39:33,788 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:39:33,789 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 810 places, 677 transitions, 14260 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:33,789 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:39:33,789 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:39:33,789 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:39:35,356 INFO L129 PetriNetUnfolder]: 954/3253 cut-off events. [2022-01-19 00:39:35,357 INFO L130 PetriNetUnfolder]: For 90401/90421 co-relation queries the response was YES. [2022-01-19 00:39:35,426 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23962 conditions, 3253 events. 954/3253 cut-off events. For 90401/90421 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 26265 event pairs, 424 based on Foata normal form. 3/3147 useless extension candidates. Maximal degree in co-relation 23654. Up to 974 conditions per place. [2022-01-19 00:39:35,437 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 403 selfloop transitions, 173 changer transitions 68/785 dead transitions. [2022-01-19 00:39:35,437 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 822 places, 785 transitions, 18405 flow [2022-01-19 00:39:35,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 00:39:35,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 00:39:35,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5928 transitions. [2022-01-19 00:39:35,440 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629343629343629 [2022-01-19 00:39:35,440 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5928 transitions. [2022-01-19 00:39:35,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5928 transitions. [2022-01-19 00:39:35,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:39:35,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5928 transitions. [2022-01-19 00:39:35,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.21621621621622) internal successors, (5928), 37 states have internal predecessors, (5928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:35,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:35,447 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:35,447 INFO L186 Difference]: Start difference. First operand has 810 places, 677 transitions, 14260 flow. Second operand 37 states and 5928 transitions. [2022-01-19 00:39:35,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 822 places, 785 transitions, 18405 flow [2022-01-19 00:39:36,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 802 places, 785 transitions, 17859 flow, removed 121 selfloop flow, removed 20 redundant places. [2022-01-19 00:39:36,180 INFO L242 Difference]: Finished difference. Result has 824 places, 684 transitions, 14561 flow [2022-01-19 00:39:36,180 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13874, PETRI_DIFFERENCE_MINUEND_PLACES=766, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=508, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=14561, PETRI_PLACES=824, PETRI_TRANSITIONS=684} [2022-01-19 00:39:36,180 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 637 predicate places. [2022-01-19 00:39:36,180 INFO L470 AbstractCegarLoop]: Abstraction has has 824 places, 684 transitions, 14561 flow [2022-01-19 00:39:36,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:36,181 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:39:36,181 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:39:36,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-01-19 00:39:36,181 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:39:36,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:39:36,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1787118898, now seen corresponding path program 97 times [2022-01-19 00:39:36,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:39:36,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883067229] [2022-01-19 00:39:36,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:39:36,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:39:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:39:36,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:39:36,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:39:36,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883067229] [2022-01-19 00:39:36,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883067229] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:39:36,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:39:36,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:39:36,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829551330] [2022-01-19 00:39:36,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:39:36,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:39:36,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:39:36,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:39:36,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:39:36,284 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:39:36,284 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 824 places, 684 transitions, 14561 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:36,285 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:39:36,285 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:39:36,285 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:39:37,757 INFO L129 PetriNetUnfolder]: 949/3246 cut-off events. [2022-01-19 00:39:37,757 INFO L130 PetriNetUnfolder]: For 90892/90912 co-relation queries the response was YES. [2022-01-19 00:39:37,822 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23831 conditions, 3246 events. 949/3246 cut-off events. For 90892/90912 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 26201 event pairs, 422 based on Foata normal form. 3/3138 useless extension candidates. Maximal degree in co-relation 23517. Up to 992 conditions per place. [2022-01-19 00:39:37,834 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 394 selfloop transitions, 184 changer transitions 60/779 dead transitions. [2022-01-19 00:39:37,834 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 828 places, 779 transitions, 18312 flow [2022-01-19 00:39:37,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 00:39:37,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 00:39:37,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4507 transitions. [2022-01-19 00:39:37,837 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7664965986394557 [2022-01-19 00:39:37,837 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4507 transitions. [2022-01-19 00:39:37,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4507 transitions. [2022-01-19 00:39:37,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:39:37,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4507 transitions. [2022-01-19 00:39:37,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.96428571428572) internal successors, (4507), 28 states have internal predecessors, (4507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:37,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:37,842 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:37,842 INFO L186 Difference]: Start difference. First operand has 824 places, 684 transitions, 14561 flow. Second operand 28 states and 4507 transitions. [2022-01-19 00:39:37,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 828 places, 779 transitions, 18312 flow [2022-01-19 00:39:38,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 802 places, 779 transitions, 17864 flow, removed 97 selfloop flow, removed 26 redundant places. [2022-01-19 00:39:38,599 INFO L242 Difference]: Finished difference. Result has 814 places, 692 transitions, 14858 flow [2022-01-19 00:39:38,599 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14183, PETRI_DIFFERENCE_MINUEND_PLACES=775, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=684, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=14858, PETRI_PLACES=814, PETRI_TRANSITIONS=692} [2022-01-19 00:39:38,599 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 627 predicate places. [2022-01-19 00:39:38,599 INFO L470 AbstractCegarLoop]: Abstraction has has 814 places, 692 transitions, 14858 flow [2022-01-19 00:39:38,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:38,600 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:39:38,600 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:39:38,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2022-01-19 00:39:38,600 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:39:38,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:39:38,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1770312740, now seen corresponding path program 98 times [2022-01-19 00:39:38,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:39:38,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293960263] [2022-01-19 00:39:38,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:39:38,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:39:38,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:39:38,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:39:38,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:39:38,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293960263] [2022-01-19 00:39:38,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293960263] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:39:38,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:39:38,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:39:38,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58017483] [2022-01-19 00:39:38,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:39:38,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:39:38,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:39:38,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:39:38,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:39:38,697 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:39:38,698 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 814 places, 692 transitions, 14858 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:38,698 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:39:38,698 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:39:38,698 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:39:40,142 INFO L129 PetriNetUnfolder]: 943/3232 cut-off events. [2022-01-19 00:39:40,142 INFO L130 PetriNetUnfolder]: For 88901/88921 co-relation queries the response was YES. [2022-01-19 00:39:40,211 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23512 conditions, 3232 events. 943/3232 cut-off events. For 88901/88921 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 26042 event pairs, 421 based on Foata normal form. 3/3127 useless extension candidates. Maximal degree in co-relation 23207. Up to 988 conditions per place. [2022-01-19 00:39:40,222 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 396 selfloop transitions, 185 changer transitions 60/782 dead transitions. [2022-01-19 00:39:40,222 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 830 places, 782 transitions, 18313 flow [2022-01-19 00:39:40,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:39:40,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:39:40,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4820 transitions. [2022-01-19 00:39:40,224 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.765079365079365 [2022-01-19 00:39:40,224 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4820 transitions. [2022-01-19 00:39:40,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4820 transitions. [2022-01-19 00:39:40,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:39:40,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4820 transitions. [2022-01-19 00:39:40,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.66666666666666) internal successors, (4820), 30 states have internal predecessors, (4820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:40,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:40,234 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:40,234 INFO L186 Difference]: Start difference. First operand has 814 places, 692 transitions, 14858 flow. Second operand 30 states and 4820 transitions. [2022-01-19 00:39:40,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 830 places, 782 transitions, 18313 flow [2022-01-19 00:39:40,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 815 places, 782 transitions, 17844 flow, removed 77 selfloop flow, removed 15 redundant places. [2022-01-19 00:39:40,969 INFO L242 Difference]: Finished difference. Result has 828 places, 698 transitions, 15035 flow [2022-01-19 00:39:40,969 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14444, PETRI_DIFFERENCE_MINUEND_PLACES=786, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=15035, PETRI_PLACES=828, PETRI_TRANSITIONS=698} [2022-01-19 00:39:40,970 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 641 predicate places. [2022-01-19 00:39:40,970 INFO L470 AbstractCegarLoop]: Abstraction has has 828 places, 698 transitions, 15035 flow [2022-01-19 00:39:40,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:40,970 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:39:40,970 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:39:40,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-01-19 00:39:40,970 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:39:40,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:39:40,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1002110748, now seen corresponding path program 99 times [2022-01-19 00:39:40,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:39:40,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076867136] [2022-01-19 00:39:40,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:39:40,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:39:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:39:41,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:39:41,079 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:39:41,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076867136] [2022-01-19 00:39:41,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076867136] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:39:41,079 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:39:41,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:39:41,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561962709] [2022-01-19 00:39:41,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:39:41,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:39:41,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:39:41,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:39:41,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:39:41,081 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:39:41,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 828 places, 698 transitions, 15035 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:41,082 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:39:41,082 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:39:41,082 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:39:42,505 INFO L129 PetriNetUnfolder]: 933/3203 cut-off events. [2022-01-19 00:39:42,506 INFO L130 PetriNetUnfolder]: For 89243/89263 co-relation queries the response was YES. [2022-01-19 00:39:42,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23185 conditions, 3203 events. 933/3203 cut-off events. For 89243/89263 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 25788 event pairs, 416 based on Foata normal form. 3/3095 useless extension candidates. Maximal degree in co-relation 22876. Up to 987 conditions per place. [2022-01-19 00:39:42,586 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 399 selfloop transitions, 172 changer transitions 59/771 dead transitions. [2022-01-19 00:39:42,586 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 842 places, 771 transitions, 18079 flow [2022-01-19 00:39:42,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:39:42,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:39:42,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4811 transitions. [2022-01-19 00:39:42,588 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7636507936507937 [2022-01-19 00:39:42,588 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4811 transitions. [2022-01-19 00:39:42,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4811 transitions. [2022-01-19 00:39:42,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:39:42,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4811 transitions. [2022-01-19 00:39:42,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.36666666666667) internal successors, (4811), 30 states have internal predecessors, (4811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:42,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:42,594 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:42,594 INFO L186 Difference]: Start difference. First operand has 828 places, 698 transitions, 15035 flow. Second operand 30 states and 4811 transitions. [2022-01-19 00:39:42,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 842 places, 771 transitions, 18079 flow [2022-01-19 00:39:43,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 828 places, 771 transitions, 17719 flow, removed 71 selfloop flow, removed 14 redundant places. [2022-01-19 00:39:43,348 INFO L242 Difference]: Finished difference. Result has 840 places, 686 transitions, 14740 flow [2022-01-19 00:39:43,348 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14710, PETRI_DIFFERENCE_MINUEND_PLACES=799, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=14740, PETRI_PLACES=840, PETRI_TRANSITIONS=686} [2022-01-19 00:39:43,348 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 653 predicate places. [2022-01-19 00:39:43,348 INFO L470 AbstractCegarLoop]: Abstraction has has 840 places, 686 transitions, 14740 flow [2022-01-19 00:39:43,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:43,349 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:39:43,349 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:39:43,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-01-19 00:39:43,349 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:39:43,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:39:43,349 INFO L85 PathProgramCache]: Analyzing trace with hash -885874594, now seen corresponding path program 100 times [2022-01-19 00:39:43,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:39:43,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483382648] [2022-01-19 00:39:43,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:39:43,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:39:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:39:43,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:39:43,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:39:43,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483382648] [2022-01-19 00:39:43,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483382648] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:39:43,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:39:43,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:39:43,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53240773] [2022-01-19 00:39:43,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:39:43,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:39:43,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:39:43,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:39:43,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:39:43,459 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:39:43,460 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 840 places, 686 transitions, 14740 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:43,460 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:39:43,460 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:39:43,460 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:39:44,885 INFO L129 PetriNetUnfolder]: 917/3238 cut-off events. [2022-01-19 00:39:44,886 INFO L130 PetriNetUnfolder]: For 89073/89079 co-relation queries the response was YES. [2022-01-19 00:39:44,955 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22714 conditions, 3238 events. 917/3238 cut-off events. For 89073/89079 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 26146 event pairs, 456 based on Foata normal form. 1/3130 useless extension candidates. Maximal degree in co-relation 22403. Up to 977 conditions per place. [2022-01-19 00:39:44,966 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 382 selfloop transitions, 160 changer transitions 62/745 dead transitions. [2022-01-19 00:39:44,966 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 840 places, 745 transitions, 17242 flow [2022-01-19 00:39:44,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 00:39:44,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 00:39:44,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4496 transitions. [2022-01-19 00:39:44,968 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646258503401361 [2022-01-19 00:39:44,968 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4496 transitions. [2022-01-19 00:39:44,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4496 transitions. [2022-01-19 00:39:44,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:39:44,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4496 transitions. [2022-01-19 00:39:44,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.57142857142858) internal successors, (4496), 28 states have internal predecessors, (4496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:44,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:44,974 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:44,974 INFO L186 Difference]: Start difference. First operand has 840 places, 686 transitions, 14740 flow. Second operand 28 states and 4496 transitions. [2022-01-19 00:39:44,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 840 places, 745 transitions, 17242 flow [2022-01-19 00:39:45,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 812 places, 745 transitions, 16707 flow, removed 32 selfloop flow, removed 28 redundant places. [2022-01-19 00:39:45,779 INFO L242 Difference]: Finished difference. Result has 821 places, 661 transitions, 13861 flow [2022-01-19 00:39:45,780 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14257, PETRI_DIFFERENCE_MINUEND_PLACES=785, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=686, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=13861, PETRI_PLACES=821, PETRI_TRANSITIONS=661} [2022-01-19 00:39:45,780 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 634 predicate places. [2022-01-19 00:39:45,780 INFO L470 AbstractCegarLoop]: Abstraction has has 821 places, 661 transitions, 13861 flow [2022-01-19 00:39:45,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:45,780 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:39:45,780 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:39:45,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2022-01-19 00:39:45,780 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:39:45,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:39:45,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1036209490, now seen corresponding path program 101 times [2022-01-19 00:39:45,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:39:45,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004327484] [2022-01-19 00:39:45,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:39:45,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:39:45,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:39:45,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:39:45,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:39:45,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004327484] [2022-01-19 00:39:45,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004327484] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:39:45,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:39:45,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:39:45,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886902046] [2022-01-19 00:39:45,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:39:45,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:39:45,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:39:45,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:39:45,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:39:45,890 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:39:45,891 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 821 places, 661 transitions, 13861 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:45,891 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:39:45,891 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:39:45,891 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:39:47,340 INFO L129 PetriNetUnfolder]: 912/3134 cut-off events. [2022-01-19 00:39:47,340 INFO L130 PetriNetUnfolder]: For 84221/84241 co-relation queries the response was YES. [2022-01-19 00:39:47,408 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22316 conditions, 3134 events. 912/3134 cut-off events. For 84221/84241 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 25034 event pairs, 424 based on Foata normal form. 3/3030 useless extension candidates. Maximal degree in co-relation 22013. Up to 971 conditions per place. [2022-01-19 00:39:47,419 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 385 selfloop transitions, 158 changer transitions 59/743 dead transitions. [2022-01-19 00:39:47,419 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 817 places, 743 transitions, 17049 flow [2022-01-19 00:39:47,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:39:47,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:39:47,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4822 transitions. [2022-01-19 00:39:47,422 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7653968253968254 [2022-01-19 00:39:47,422 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4822 transitions. [2022-01-19 00:39:47,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4822 transitions. [2022-01-19 00:39:47,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:39:47,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4822 transitions. [2022-01-19 00:39:47,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.73333333333332) internal successors, (4822), 30 states have internal predecessors, (4822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:47,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:47,427 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:47,428 INFO L186 Difference]: Start difference. First operand has 821 places, 661 transitions, 13861 flow. Second operand 30 states and 4822 transitions. [2022-01-19 00:39:47,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 817 places, 743 transitions, 17049 flow [2022-01-19 00:39:48,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 785 places, 743 transitions, 16241 flow, removed 35 selfloop flow, removed 32 redundant places. [2022-01-19 00:39:48,105 INFO L242 Difference]: Finished difference. Result has 796 places, 663 transitions, 13586 flow [2022-01-19 00:39:48,105 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13180, PETRI_DIFFERENCE_MINUEND_PLACES=756, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=13586, PETRI_PLACES=796, PETRI_TRANSITIONS=663} [2022-01-19 00:39:48,105 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 609 predicate places. [2022-01-19 00:39:48,105 INFO L470 AbstractCegarLoop]: Abstraction has has 796 places, 663 transitions, 13586 flow [2022-01-19 00:39:48,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:48,106 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:39:48,106 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:39:48,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-01-19 00:39:48,106 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:39:48,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:39:48,106 INFO L85 PathProgramCache]: Analyzing trace with hash -207531584, now seen corresponding path program 102 times [2022-01-19 00:39:48,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:39:48,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433875607] [2022-01-19 00:39:48,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:39:48,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:39:48,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:39:48,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:39:48,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:39:48,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433875607] [2022-01-19 00:39:48,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433875607] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:39:48,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:39:48,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:39:48,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613508258] [2022-01-19 00:39:48,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:39:48,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:39:48,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:39:48,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:39:48,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:39:48,215 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:39:48,215 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 796 places, 663 transitions, 13586 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:48,215 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:39:48,215 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:39:48,215 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:39:49,701 INFO L129 PetriNetUnfolder]: 902/3188 cut-off events. [2022-01-19 00:39:49,701 INFO L130 PetriNetUnfolder]: For 78832/78838 co-relation queries the response was YES. [2022-01-19 00:39:49,756 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21861 conditions, 3188 events. 902/3188 cut-off events. For 78832/78838 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 25626 event pairs, 459 based on Foata normal form. 1/3079 useless extension candidates. Maximal degree in co-relation 21567. Up to 969 conditions per place. [2022-01-19 00:39:49,766 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 374 selfloop transitions, 157 changer transitions 57/729 dead transitions. [2022-01-19 00:39:49,766 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 810 places, 729 transitions, 16336 flow [2022-01-19 00:39:49,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:39:49,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:39:49,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4817 transitions. [2022-01-19 00:39:49,769 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646031746031746 [2022-01-19 00:39:49,769 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4817 transitions. [2022-01-19 00:39:49,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4817 transitions. [2022-01-19 00:39:49,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:39:49,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4817 transitions. [2022-01-19 00:39:49,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.56666666666666) internal successors, (4817), 30 states have internal predecessors, (4817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:49,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:49,774 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:49,774 INFO L186 Difference]: Start difference. First operand has 796 places, 663 transitions, 13586 flow. Second operand 30 states and 4817 transitions. [2022-01-19 00:39:49,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 810 places, 729 transitions, 16336 flow [2022-01-19 00:39:50,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 797 places, 729 transitions, 16002 flow, removed 58 selfloop flow, removed 13 redundant places. [2022-01-19 00:39:50,383 INFO L242 Difference]: Finished difference. Result has 809 places, 651 transitions, 13308 flow [2022-01-19 00:39:50,384 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13281, PETRI_DIFFERENCE_MINUEND_PLACES=768, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=663, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=13308, PETRI_PLACES=809, PETRI_TRANSITIONS=651} [2022-01-19 00:39:50,384 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 622 predicate places. [2022-01-19 00:39:50,384 INFO L470 AbstractCegarLoop]: Abstraction has has 809 places, 651 transitions, 13308 flow [2022-01-19 00:39:50,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:50,384 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:39:50,385 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:39:50,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-01-19 00:39:50,385 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:39:50,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:39:50,385 INFO L85 PathProgramCache]: Analyzing trace with hash 81257722, now seen corresponding path program 103 times [2022-01-19 00:39:50,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:39:50,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498236688] [2022-01-19 00:39:50,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:39:50,385 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:39:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:39:50,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:39:50,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:39:50,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498236688] [2022-01-19 00:39:50,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498236688] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:39:50,486 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:39:50,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:39:50,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413438336] [2022-01-19 00:39:50,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:39:50,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:39:50,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:39:50,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:39:50,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:39:50,487 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:39:50,488 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 809 places, 651 transitions, 13308 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:50,488 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:39:50,488 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:39:50,488 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:39:51,827 INFO L129 PetriNetUnfolder]: 878/3028 cut-off events. [2022-01-19 00:39:51,827 INFO L130 PetriNetUnfolder]: For 77835/77855 co-relation queries the response was YES. [2022-01-19 00:39:51,891 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21025 conditions, 3028 events. 878/3028 cut-off events. For 77835/77855 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 23968 event pairs, 404 based on Foata normal form. 3/2925 useless extension candidates. Maximal degree in co-relation 20728. Up to 965 conditions per place. [2022-01-19 00:39:51,902 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 364 selfloop transitions, 146 changer transitions 60/711 dead transitions. [2022-01-19 00:39:51,902 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 811 places, 711 transitions, 15814 flow [2022-01-19 00:39:51,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:39:51,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:39:51,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4808 transitions. [2022-01-19 00:39:51,904 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631746031746032 [2022-01-19 00:39:51,904 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4808 transitions. [2022-01-19 00:39:51,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4808 transitions. [2022-01-19 00:39:51,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:39:51,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4808 transitions. [2022-01-19 00:39:51,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.26666666666668) internal successors, (4808), 30 states have internal predecessors, (4808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:51,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:51,910 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:51,910 INFO L186 Difference]: Start difference. First operand has 809 places, 651 transitions, 13308 flow. Second operand 30 states and 4808 transitions. [2022-01-19 00:39:51,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 811 places, 711 transitions, 15814 flow [2022-01-19 00:39:52,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 781 places, 711 transitions, 15202 flow, removed 38 selfloop flow, removed 30 redundant places. [2022-01-19 00:39:52,528 INFO L242 Difference]: Finished difference. Result has 792 places, 625 transitions, 12375 flow [2022-01-19 00:39:52,529 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12761, PETRI_DIFFERENCE_MINUEND_PLACES=752, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=12375, PETRI_PLACES=792, PETRI_TRANSITIONS=625} [2022-01-19 00:39:52,529 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 605 predicate places. [2022-01-19 00:39:52,529 INFO L470 AbstractCegarLoop]: Abstraction has has 792 places, 625 transitions, 12375 flow [2022-01-19 00:39:52,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:52,529 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:39:52,530 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:39:52,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2022-01-19 00:39:52,530 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:39:52,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:39:52,530 INFO L85 PathProgramCache]: Analyzing trace with hash -340669678, now seen corresponding path program 104 times [2022-01-19 00:39:52,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:39:52,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633281346] [2022-01-19 00:39:52,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:39:52,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:39:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:39:52,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:39:52,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:39:52,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633281346] [2022-01-19 00:39:52,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633281346] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:39:52,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:39:52,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:39:52,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140815561] [2022-01-19 00:39:52,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:39:52,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:39:52,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:39:52,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:39:52,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:39:52,632 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:39:52,633 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 792 places, 625 transitions, 12375 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:52,633 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:39:52,633 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:39:52,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:39:53,966 INFO L129 PetriNetUnfolder]: 873/3013 cut-off events. [2022-01-19 00:39:53,966 INFO L130 PetriNetUnfolder]: For 73017/73037 co-relation queries the response was YES. [2022-01-19 00:39:54,023 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20713 conditions, 3013 events. 873/3013 cut-off events. For 73017/73037 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 23813 event pairs, 420 based on Foata normal form. 3/2909 useless extension candidates. Maximal degree in co-relation 20422. Up to 961 conditions per place. [2022-01-19 00:39:54,033 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 357 selfloop transitions, 133 changer transitions 58/689 dead transitions. [2022-01-19 00:39:54,033 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 786 places, 689 transitions, 14920 flow [2022-01-19 00:39:54,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:39:54,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:39:54,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4813 transitions. [2022-01-19 00:39:54,036 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763968253968254 [2022-01-19 00:39:54,036 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4813 transitions. [2022-01-19 00:39:54,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4813 transitions. [2022-01-19 00:39:54,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:39:54,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4813 transitions. [2022-01-19 00:39:54,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:54,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:54,041 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:54,042 INFO L186 Difference]: Start difference. First operand has 792 places, 625 transitions, 12375 flow. Second operand 30 states and 4813 transitions. [2022-01-19 00:39:54,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 786 places, 689 transitions, 14920 flow [2022-01-19 00:39:54,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 755 places, 689 transitions, 14275 flow, removed 36 selfloop flow, removed 31 redundant places. [2022-01-19 00:39:54,620 INFO L242 Difference]: Finished difference. Result has 767 places, 612 transitions, 11786 flow [2022-01-19 00:39:54,621 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11822, PETRI_DIFFERENCE_MINUEND_PLACES=726, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=11786, PETRI_PLACES=767, PETRI_TRANSITIONS=612} [2022-01-19 00:39:54,621 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 580 predicate places. [2022-01-19 00:39:54,621 INFO L470 AbstractCegarLoop]: Abstraction has has 767 places, 612 transitions, 11786 flow [2022-01-19 00:39:54,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:54,621 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:39:54,621 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:39:54,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2022-01-19 00:39:54,621 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:39:54,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:39:54,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1466982394, now seen corresponding path program 105 times [2022-01-19 00:39:54,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:39:54,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518191211] [2022-01-19 00:39:54,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:39:54,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:39:54,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:39:54,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:39:54,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:39:54,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518191211] [2022-01-19 00:39:54,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518191211] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:39:54,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:39:54,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:39:54,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921570218] [2022-01-19 00:39:54,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:39:54,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:39:54,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:39:54,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:39:54,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:39:54,720 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:39:54,721 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 767 places, 612 transitions, 11786 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:54,721 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:39:54,721 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:39:54,721 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:39:56,103 INFO L129 PetriNetUnfolder]: 860/3086 cut-off events. [2022-01-19 00:39:56,103 INFO L130 PetriNetUnfolder]: For 69378/69384 co-relation queries the response was YES. [2022-01-19 00:39:56,166 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20215 conditions, 3086 events. 860/3086 cut-off events. For 69378/69384 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 24760 event pairs, 440 based on Foata normal form. 1/2983 useless extension candidates. Maximal degree in co-relation 19931. Up to 943 conditions per place. [2022-01-19 00:39:56,177 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 343 selfloop transitions, 141 changer transitions 73/698 dead transitions. [2022-01-19 00:39:56,177 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 774 places, 698 transitions, 14824 flow [2022-01-19 00:39:56,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 00:39:56,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 00:39:56,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5600 transitions. [2022-01-19 00:39:56,180 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2022-01-19 00:39:56,180 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5600 transitions. [2022-01-19 00:39:56,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5600 transitions. [2022-01-19 00:39:56,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:39:56,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5600 transitions. [2022-01-19 00:39:56,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.0) internal successors, (5600), 35 states have internal predecessors, (5600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:56,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:56,187 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:56,187 INFO L186 Difference]: Start difference. First operand has 767 places, 612 transitions, 11786 flow. Second operand 35 states and 5600 transitions. [2022-01-19 00:39:56,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 774 places, 698 transitions, 14824 flow [2022-01-19 00:39:56,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 743 places, 698 transitions, 14334 flow, removed 33 selfloop flow, removed 31 redundant places. [2022-01-19 00:39:56,738 INFO L242 Difference]: Finished difference. Result has 756 places, 599 transitions, 11299 flow [2022-01-19 00:39:56,738 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11364, PETRI_DIFFERENCE_MINUEND_PLACES=709, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=11299, PETRI_PLACES=756, PETRI_TRANSITIONS=599} [2022-01-19 00:39:56,739 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 569 predicate places. [2022-01-19 00:39:56,739 INFO L470 AbstractCegarLoop]: Abstraction has has 756 places, 599 transitions, 11299 flow [2022-01-19 00:39:56,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:56,739 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:39:56,739 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:39:56,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2022-01-19 00:39:56,739 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:39:56,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:39:56,740 INFO L85 PathProgramCache]: Analyzing trace with hash -646566524, now seen corresponding path program 106 times [2022-01-19 00:39:56,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:39:56,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767018401] [2022-01-19 00:39:56,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:39:56,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:39:56,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:39:56,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:39:56,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:39:56,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767018401] [2022-01-19 00:39:56,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767018401] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:39:56,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:39:56,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:39:56,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050721645] [2022-01-19 00:39:56,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:39:56,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:39:56,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:39:56,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:39:56,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:39:56,844 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:39:56,845 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 756 places, 599 transitions, 11299 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:56,845 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:39:56,845 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:39:56,845 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:39:58,090 INFO L129 PetriNetUnfolder]: 827/2965 cut-off events. [2022-01-19 00:39:58,090 INFO L130 PetriNetUnfolder]: For 63634/63640 co-relation queries the response was YES. [2022-01-19 00:39:58,144 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19154 conditions, 2965 events. 827/2965 cut-off events. For 63634/63640 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 23320 event pairs, 439 based on Foata normal form. 1/2861 useless extension candidates. Maximal degree in co-relation 18877. Up to 941 conditions per place. [2022-01-19 00:39:58,154 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 328 selfloop transitions, 114 changer transitions 61/644 dead transitions. [2022-01-19 00:39:58,154 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 763 places, 644 transitions, 13195 flow [2022-01-19 00:39:58,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:39:58,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:39:58,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4638 transitions. [2022-01-19 00:39:58,157 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.761576354679803 [2022-01-19 00:39:58,157 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4638 transitions. [2022-01-19 00:39:58,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4638 transitions. [2022-01-19 00:39:58,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:39:58,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4638 transitions. [2022-01-19 00:39:58,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 159.93103448275863) internal successors, (4638), 29 states have internal predecessors, (4638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:58,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:58,162 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:58,162 INFO L186 Difference]: Start difference. First operand has 756 places, 599 transitions, 11299 flow. Second operand 29 states and 4638 transitions. [2022-01-19 00:39:58,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 763 places, 644 transitions, 13195 flow [2022-01-19 00:39:58,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 734 places, 644 transitions, 12803 flow, removed 58 selfloop flow, removed 29 redundant places. [2022-01-19 00:39:58,652 INFO L242 Difference]: Finished difference. Result has 743 places, 558 transitions, 10135 flow [2022-01-19 00:39:58,652 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10945, PETRI_DIFFERENCE_MINUEND_PLACES=706, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=10135, PETRI_PLACES=743, PETRI_TRANSITIONS=558} [2022-01-19 00:39:58,652 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 556 predicate places. [2022-01-19 00:39:58,652 INFO L470 AbstractCegarLoop]: Abstraction has has 743 places, 558 transitions, 10135 flow [2022-01-19 00:39:58,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:58,653 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:39:58,653 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:39:58,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-01-19 00:39:58,653 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:39:58,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:39:58,653 INFO L85 PathProgramCache]: Analyzing trace with hash -915891424, now seen corresponding path program 107 times [2022-01-19 00:39:58,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:39:58,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103163224] [2022-01-19 00:39:58,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:39:58,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:39:58,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:39:58,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:39:58,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:39:58,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103163224] [2022-01-19 00:39:58,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103163224] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:39:58,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:39:58,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:39:58,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214703895] [2022-01-19 00:39:58,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:39:58,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:39:58,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:39:58,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:39:58,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:39:58,773 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:39:58,774 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 743 places, 558 transitions, 10135 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:58,774 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:39:58,774 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:39:58,774 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:00,156 INFO L129 PetriNetUnfolder]: 838/2912 cut-off events. [2022-01-19 00:40:00,156 INFO L130 PetriNetUnfolder]: For 65834/65854 co-relation queries the response was YES. [2022-01-19 00:40:00,212 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19258 conditions, 2912 events. 838/2912 cut-off events. For 65834/65854 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 22763 event pairs, 403 based on Foata normal form. 3/2815 useless extension candidates. Maximal degree in co-relation 18993. Up to 939 conditions per place. [2022-01-19 00:40:00,222 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 316 selfloop transitions, 138 changer transitions 70/665 dead transitions. [2022-01-19 00:40:00,222 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 729 places, 665 transitions, 13797 flow [2022-01-19 00:40:00,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:40:00,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:40:00,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6081 transitions. [2022-01-19 00:40:00,225 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.76203007518797 [2022-01-19 00:40:00,225 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6081 transitions. [2022-01-19 00:40:00,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6081 transitions. [2022-01-19 00:40:00,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:00,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6081 transitions. [2022-01-19 00:40:00,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.02631578947367) internal successors, (6081), 38 states have internal predecessors, (6081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:00,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:00,232 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:00,232 INFO L186 Difference]: Start difference. First operand has 743 places, 558 transitions, 10135 flow. Second operand 38 states and 6081 transitions. [2022-01-19 00:40:00,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 729 places, 665 transitions, 13797 flow [2022-01-19 00:40:00,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 695 places, 665 transitions, 12925 flow, removed 45 selfloop flow, removed 34 redundant places. [2022-01-19 00:40:00,695 INFO L242 Difference]: Finished difference. Result has 718 places, 566 transitions, 10062 flow [2022-01-19 00:40:00,695 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9445, PETRI_DIFFERENCE_MINUEND_PLACES=658, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=10062, PETRI_PLACES=718, PETRI_TRANSITIONS=566} [2022-01-19 00:40:00,695 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 531 predicate places. [2022-01-19 00:40:00,695 INFO L470 AbstractCegarLoop]: Abstraction has has 718 places, 566 transitions, 10062 flow [2022-01-19 00:40:00,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:00,696 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:00,696 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:00,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2022-01-19 00:40:00,696 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:00,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:00,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1163121618, now seen corresponding path program 108 times [2022-01-19 00:40:00,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:00,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452017345] [2022-01-19 00:40:00,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:00,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:00,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:00,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:00,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452017345] [2022-01-19 00:40:00,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452017345] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:00,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:00,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:00,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225478496] [2022-01-19 00:40:00,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:00,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:00,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:00,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:00,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:00,797 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:00,798 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 718 places, 566 transitions, 10062 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:00,798 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:00,798 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:00,798 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:02,020 INFO L129 PetriNetUnfolder]: 807/2820 cut-off events. [2022-01-19 00:40:02,020 INFO L130 PetriNetUnfolder]: For 58009/58029 co-relation queries the response was YES. [2022-01-19 00:40:02,068 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18039 conditions, 2820 events. 807/2820 cut-off events. For 58009/58029 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 21834 event pairs, 413 based on Foata normal form. 3/2721 useless extension candidates. Maximal degree in co-relation 17773. Up to 937 conditions per place. [2022-01-19 00:40:02,077 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 321 selfloop transitions, 85 changer transitions 60/607 dead transitions. [2022-01-19 00:40:02,077 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 722 places, 607 transitions, 11717 flow [2022-01-19 00:40:02,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:40:02,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:40:02,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4646 transitions. [2022-01-19 00:40:02,079 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628899835796388 [2022-01-19 00:40:02,079 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4646 transitions. [2022-01-19 00:40:02,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4646 transitions. [2022-01-19 00:40:02,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:02,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4646 transitions. [2022-01-19 00:40:02,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.20689655172413) internal successors, (4646), 29 states have internal predecessors, (4646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:02,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:02,085 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:02,085 INFO L186 Difference]: Start difference. First operand has 718 places, 566 transitions, 10062 flow. Second operand 29 states and 4646 transitions. [2022-01-19 00:40:02,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 722 places, 607 transitions, 11717 flow [2022-01-19 00:40:02,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 700 places, 607 transitions, 11462 flow, removed 57 selfloop flow, removed 22 redundant places. [2022-01-19 00:40:02,503 INFO L242 Difference]: Finished difference. Result has 707 places, 528 transitions, 9109 flow [2022-01-19 00:40:02,503 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9826, PETRI_DIFFERENCE_MINUEND_PLACES=672, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=9109, PETRI_PLACES=707, PETRI_TRANSITIONS=528} [2022-01-19 00:40:02,507 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 520 predicate places. [2022-01-19 00:40:02,507 INFO L470 AbstractCegarLoop]: Abstraction has has 707 places, 528 transitions, 9109 flow [2022-01-19 00:40:02,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:02,507 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:02,507 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:02,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2022-01-19 00:40:02,508 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:02,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:02,508 INFO L85 PathProgramCache]: Analyzing trace with hash 740238738, now seen corresponding path program 109 times [2022-01-19 00:40:02,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:02,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666207885] [2022-01-19 00:40:02,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:02,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:02,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:02,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:02,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666207885] [2022-01-19 00:40:02,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666207885] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:02,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:02,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:02,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997223281] [2022-01-19 00:40:02,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:02,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:02,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:02,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:02,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:02,610 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:02,610 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 707 places, 528 transitions, 9109 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:02,610 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:02,611 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:02,611 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:03,918 INFO L129 PetriNetUnfolder]: 807/2845 cut-off events. [2022-01-19 00:40:03,918 INFO L130 PetriNetUnfolder]: For 58503/58523 co-relation queries the response was YES. [2022-01-19 00:40:03,971 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18018 conditions, 2845 events. 807/2845 cut-off events. For 58503/58523 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 22136 event pairs, 410 based on Foata normal form. 3/2747 useless extension candidates. Maximal degree in co-relation 17763. Up to 935 conditions per place. [2022-01-19 00:40:03,980 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 279 selfloop transitions, 129 changer transitions 70/619 dead transitions. [2022-01-19 00:40:03,980 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 699 places, 619 transitions, 12177 flow [2022-01-19 00:40:03,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 00:40:03,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 00:40:03,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5927 transitions. [2022-01-19 00:40:03,983 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628056628056628 [2022-01-19 00:40:03,983 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5927 transitions. [2022-01-19 00:40:03,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5927 transitions. [2022-01-19 00:40:03,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:03,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5927 transitions. [2022-01-19 00:40:03,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.1891891891892) internal successors, (5927), 37 states have internal predecessors, (5927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:03,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:03,990 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:03,990 INFO L186 Difference]: Start difference. First operand has 707 places, 528 transitions, 9109 flow. Second operand 37 states and 5927 transitions. [2022-01-19 00:40:03,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 699 places, 619 transitions, 12177 flow [2022-01-19 00:40:04,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 668 places, 619 transitions, 11688 flow, removed 32 selfloop flow, removed 31 redundant places. [2022-01-19 00:40:04,368 INFO L242 Difference]: Finished difference. Result has 686 places, 528 transitions, 9050 flow [2022-01-19 00:40:04,369 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8713, PETRI_DIFFERENCE_MINUEND_PLACES=632, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9050, PETRI_PLACES=686, PETRI_TRANSITIONS=528} [2022-01-19 00:40:04,369 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 499 predicate places. [2022-01-19 00:40:04,369 INFO L470 AbstractCegarLoop]: Abstraction has has 686 places, 528 transitions, 9050 flow [2022-01-19 00:40:04,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:04,369 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:04,369 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:04,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2022-01-19 00:40:04,370 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:04,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:04,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1682277394, now seen corresponding path program 110 times [2022-01-19 00:40:04,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:04,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32814735] [2022-01-19 00:40:04,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:04,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:04,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:04,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:04,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:04,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32814735] [2022-01-19 00:40:04,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32814735] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:04,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:04,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:04,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139003394] [2022-01-19 00:40:04,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:04,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:04,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:04,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:04,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:04,472 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:04,473 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 686 places, 528 transitions, 9050 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:04,473 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:04,473 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:04,473 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:05,747 INFO L129 PetriNetUnfolder]: 807/2840 cut-off events. [2022-01-19 00:40:05,747 INFO L130 PetriNetUnfolder]: For 58296/58316 co-relation queries the response was YES. [2022-01-19 00:40:05,788 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18067 conditions, 2840 events. 807/2840 cut-off events. For 58296/58316 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 22086 event pairs, 406 based on Foata normal form. 3/2742 useless extension candidates. Maximal degree in co-relation 17810. Up to 945 conditions per place. [2022-01-19 00:40:05,797 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 286 selfloop transitions, 145 changer transitions 56/628 dead transitions. [2022-01-19 00:40:05,797 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 692 places, 628 transitions, 12432 flow [2022-01-19 00:40:05,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:40:05,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:40:05,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4823 transitions. [2022-01-19 00:40:05,800 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655555555555555 [2022-01-19 00:40:05,800 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4823 transitions. [2022-01-19 00:40:05,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4823 transitions. [2022-01-19 00:40:05,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:05,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4823 transitions. [2022-01-19 00:40:05,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.76666666666668) internal successors, (4823), 30 states have internal predecessors, (4823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:05,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:05,805 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:05,805 INFO L186 Difference]: Start difference. First operand has 686 places, 528 transitions, 9050 flow. Second operand 30 states and 4823 transitions. [2022-01-19 00:40:05,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 692 places, 628 transitions, 12432 flow [2022-01-19 00:40:06,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 628 transitions, 12062 flow, removed 79 selfloop flow, removed 26 redundant places. [2022-01-19 00:40:06,190 INFO L242 Difference]: Finished difference. Result has 681 places, 546 transitions, 9710 flow [2022-01-19 00:40:06,190 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8742, PETRI_DIFFERENCE_MINUEND_PLACES=637, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=9710, PETRI_PLACES=681, PETRI_TRANSITIONS=546} [2022-01-19 00:40:06,190 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 494 predicate places. [2022-01-19 00:40:06,191 INFO L470 AbstractCegarLoop]: Abstraction has has 681 places, 546 transitions, 9710 flow [2022-01-19 00:40:06,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:06,191 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:06,191 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:06,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2022-01-19 00:40:06,191 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:06,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:06,191 INFO L85 PathProgramCache]: Analyzing trace with hash -361675340, now seen corresponding path program 111 times [2022-01-19 00:40:06,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:06,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612639705] [2022-01-19 00:40:06,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:06,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:06,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:06,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:06,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:06,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612639705] [2022-01-19 00:40:06,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612639705] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:06,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:06,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:06,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803113018] [2022-01-19 00:40:06,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:06,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:06,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:06,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:06,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:06,296 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:06,297 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 681 places, 546 transitions, 9710 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:06,297 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:06,297 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:06,297 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:07,491 INFO L129 PetriNetUnfolder]: 788/2773 cut-off events. [2022-01-19 00:40:07,491 INFO L130 PetriNetUnfolder]: For 55093/55113 co-relation queries the response was YES. [2022-01-19 00:40:07,550 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17482 conditions, 2773 events. 788/2773 cut-off events. For 55093/55113 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 21351 event pairs, 404 based on Foata normal form. 3/2674 useless extension candidates. Maximal degree in co-relation 17232. Up to 937 conditions per place. [2022-01-19 00:40:07,559 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 283 selfloop transitions, 114 changer transitions 59/597 dead transitions. [2022-01-19 00:40:07,559 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 597 transitions, 11588 flow [2022-01-19 00:40:07,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:40:07,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:40:07,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4658 transitions. [2022-01-19 00:40:07,561 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7648604269293925 [2022-01-19 00:40:07,562 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4658 transitions. [2022-01-19 00:40:07,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4658 transitions. [2022-01-19 00:40:07,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:07,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4658 transitions. [2022-01-19 00:40:07,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.6206896551724) internal successors, (4658), 29 states have internal predecessors, (4658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:07,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:07,567 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:07,567 INFO L186 Difference]: Start difference. First operand has 681 places, 546 transitions, 9710 flow. Second operand 29 states and 4658 transitions. [2022-01-19 00:40:07,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 597 transitions, 11588 flow [2022-01-19 00:40:07,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 684 places, 597 transitions, 11260 flow, removed 124 selfloop flow, removed 10 redundant places. [2022-01-19 00:40:07,956 INFO L242 Difference]: Finished difference. Result has 694 places, 521 transitions, 8968 flow [2022-01-19 00:40:07,957 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9405, PETRI_DIFFERENCE_MINUEND_PLACES=656, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=546, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=8968, PETRI_PLACES=694, PETRI_TRANSITIONS=521} [2022-01-19 00:40:07,957 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 507 predicate places. [2022-01-19 00:40:07,957 INFO L470 AbstractCegarLoop]: Abstraction has has 694 places, 521 transitions, 8968 flow [2022-01-19 00:40:07,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:07,957 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:07,957 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:07,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2022-01-19 00:40:07,958 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:07,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:07,958 INFO L85 PathProgramCache]: Analyzing trace with hash 281739238, now seen corresponding path program 112 times [2022-01-19 00:40:07,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:07,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262747286] [2022-01-19 00:40:07,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:07,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:08,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:08,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:08,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262747286] [2022-01-19 00:40:08,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262747286] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:08,070 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:08,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:08,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013679210] [2022-01-19 00:40:08,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:08,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:08,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:08,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:08,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:08,071 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:08,072 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 694 places, 521 transitions, 8968 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:08,072 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:08,072 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:08,072 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:09,178 INFO L129 PetriNetUnfolder]: 764/2686 cut-off events. [2022-01-19 00:40:09,178 INFO L130 PetriNetUnfolder]: For 50889/50909 co-relation queries the response was YES. [2022-01-19 00:40:09,226 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16561 conditions, 2686 events. 764/2686 cut-off events. For 50889/50909 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 20406 event pairs, 391 based on Foata normal form. 3/2590 useless extension candidates. Maximal degree in co-relation 16309. Up to 927 conditions per place. [2022-01-19 00:40:09,235 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 271 selfloop transitions, 98 changer transitions 61/571 dead transitions. [2022-01-19 00:40:09,235 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 687 places, 571 transitions, 10774 flow [2022-01-19 00:40:09,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 00:40:09,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 00:40:09,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4499 transitions. [2022-01-19 00:40:09,237 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7651360544217687 [2022-01-19 00:40:09,237 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4499 transitions. [2022-01-19 00:40:09,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4499 transitions. [2022-01-19 00:40:09,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:09,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4499 transitions. [2022-01-19 00:40:09,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.67857142857142) internal successors, (4499), 28 states have internal predecessors, (4499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:09,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:09,243 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:09,243 INFO L186 Difference]: Start difference. First operand has 694 places, 521 transitions, 8968 flow. Second operand 28 states and 4499 transitions. [2022-01-19 00:40:09,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 687 places, 571 transitions, 10774 flow [2022-01-19 00:40:09,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 653 places, 571 transitions, 10171 flow, removed 43 selfloop flow, removed 34 redundant places. [2022-01-19 00:40:09,673 INFO L242 Difference]: Finished difference. Result has 661 places, 486 transitions, 7732 flow [2022-01-19 00:40:09,673 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8425, PETRI_DIFFERENCE_MINUEND_PLACES=626, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=7732, PETRI_PLACES=661, PETRI_TRANSITIONS=486} [2022-01-19 00:40:09,673 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 474 predicate places. [2022-01-19 00:40:09,673 INFO L470 AbstractCegarLoop]: Abstraction has has 661 places, 486 transitions, 7732 flow [2022-01-19 00:40:09,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:09,674 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:09,674 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:09,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2022-01-19 00:40:09,674 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:09,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:09,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1668264364, now seen corresponding path program 113 times [2022-01-19 00:40:09,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:09,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556383447] [2022-01-19 00:40:09,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:09,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:09,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:09,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:09,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:09,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556383447] [2022-01-19 00:40:09,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556383447] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:09,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:09,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:09,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699646813] [2022-01-19 00:40:09,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:09,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:09,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:09,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:09,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:09,782 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:09,783 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 661 places, 486 transitions, 7732 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:09,783 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:09,783 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:09,783 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:10,921 INFO L129 PetriNetUnfolder]: 772/2706 cut-off events. [2022-01-19 00:40:10,921 INFO L130 PetriNetUnfolder]: For 48691/48711 co-relation queries the response was YES. [2022-01-19 00:40:10,968 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16456 conditions, 2706 events. 772/2706 cut-off events. For 48691/48711 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20575 event pairs, 389 based on Foata normal form. 3/2611 useless extension candidates. Maximal degree in co-relation 16216. Up to 929 conditions per place. [2022-01-19 00:40:10,977 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 261 selfloop transitions, 122 changer transitions 55/579 dead transitions. [2022-01-19 00:40:10,978 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 649 places, 579 transitions, 10733 flow [2022-01-19 00:40:10,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:40:10,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:40:10,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4667 transitions. [2022-01-19 00:40:10,980 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7663382594417077 [2022-01-19 00:40:10,980 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4667 transitions. [2022-01-19 00:40:10,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4667 transitions. [2022-01-19 00:40:10,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:10,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4667 transitions. [2022-01-19 00:40:10,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.93103448275863) internal successors, (4667), 29 states have internal predecessors, (4667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:10,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:10,986 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:10,986 INFO L186 Difference]: Start difference. First operand has 661 places, 486 transitions, 7732 flow. Second operand 29 states and 4667 transitions. [2022-01-19 00:40:10,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 649 places, 579 transitions, 10733 flow [2022-01-19 00:40:11,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 579 transitions, 9960 flow, removed 49 selfloop flow, removed 38 redundant places. [2022-01-19 00:40:11,294 INFO L242 Difference]: Finished difference. Result has 625 places, 498 transitions, 7804 flow [2022-01-19 00:40:11,295 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7189, PETRI_DIFFERENCE_MINUEND_PLACES=583, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7804, PETRI_PLACES=625, PETRI_TRANSITIONS=498} [2022-01-19 00:40:11,295 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 438 predicate places. [2022-01-19 00:40:11,295 INFO L470 AbstractCegarLoop]: Abstraction has has 625 places, 498 transitions, 7804 flow [2022-01-19 00:40:11,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:11,295 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:11,295 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:11,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2022-01-19 00:40:11,296 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:11,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:11,296 INFO L85 PathProgramCache]: Analyzing trace with hash -877186112, now seen corresponding path program 114 times [2022-01-19 00:40:11,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:11,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922148778] [2022-01-19 00:40:11,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:11,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:11,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:11,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:11,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922148778] [2022-01-19 00:40:11,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922148778] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:11,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:11,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:11,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966766938] [2022-01-19 00:40:11,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:11,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:11,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:11,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:11,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:11,401 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:11,402 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 625 places, 498 transitions, 7804 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:11,402 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:11,402 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:11,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:12,538 INFO L129 PetriNetUnfolder]: 773/2708 cut-off events. [2022-01-19 00:40:12,538 INFO L130 PetriNetUnfolder]: For 45058/45078 co-relation queries the response was YES. [2022-01-19 00:40:12,587 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16323 conditions, 2708 events. 773/2708 cut-off events. For 45058/45078 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 20677 event pairs, 389 based on Foata normal form. 3/2609 useless extension candidates. Maximal degree in co-relation 16091. Up to 931 conditions per place. [2022-01-19 00:40:12,596 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 266 selfloop transitions, 129 changer transitions 56/592 dead transitions. [2022-01-19 00:40:12,596 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 592 transitions, 10832 flow [2022-01-19 00:40:12,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:40:12,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:40:12,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4663 transitions. [2022-01-19 00:40:12,599 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7656814449917898 [2022-01-19 00:40:12,599 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4663 transitions. [2022-01-19 00:40:12,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4663 transitions. [2022-01-19 00:40:12,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:12,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4663 transitions. [2022-01-19 00:40:12,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.79310344827587) internal successors, (4663), 29 states have internal predecessors, (4663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:12,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:12,604 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:12,605 INFO L186 Difference]: Start difference. First operand has 625 places, 498 transitions, 7804 flow. Second operand 29 states and 4663 transitions. [2022-01-19 00:40:12,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 592 transitions, 10832 flow [2022-01-19 00:40:12,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 592 transitions, 10482 flow, removed 61 selfloop flow, removed 14 redundant places. [2022-01-19 00:40:12,912 INFO L242 Difference]: Finished difference. Result has 638 places, 513 transitions, 8296 flow [2022-01-19 00:40:12,912 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7534, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=8296, PETRI_PLACES=638, PETRI_TRANSITIONS=513} [2022-01-19 00:40:12,912 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 451 predicate places. [2022-01-19 00:40:12,913 INFO L470 AbstractCegarLoop]: Abstraction has has 638 places, 513 transitions, 8296 flow [2022-01-19 00:40:12,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:12,913 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:12,913 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:12,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2022-01-19 00:40:12,913 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:12,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:12,913 INFO L85 PathProgramCache]: Analyzing trace with hash -2076835798, now seen corresponding path program 115 times [2022-01-19 00:40:12,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:12,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082926523] [2022-01-19 00:40:12,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:12,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:12,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:13,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:13,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:13,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082926523] [2022-01-19 00:40:13,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082926523] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:13,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:13,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:13,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879404534] [2022-01-19 00:40:13,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:13,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:13,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:13,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:13,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:13,022 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:13,023 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 638 places, 513 transitions, 8296 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:13,023 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:13,023 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:13,023 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:14,181 INFO L129 PetriNetUnfolder]: 774/2808 cut-off events. [2022-01-19 00:40:14,181 INFO L130 PetriNetUnfolder]: For 46418/46424 co-relation queries the response was YES. [2022-01-19 00:40:14,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16484 conditions, 2808 events. 774/2808 cut-off events. For 46418/46424 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 21711 event pairs, 422 based on Foata normal form. 1/2707 useless extension candidates. Maximal degree in co-relation 16247. Up to 933 conditions per place. [2022-01-19 00:40:14,233 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 267 selfloop transitions, 142 changer transitions 59/609 dead transitions. [2022-01-19 00:40:14,233 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 651 places, 609 transitions, 11317 flow [2022-01-19 00:40:14,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 00:40:14,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 00:40:14,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4506 transitions. [2022-01-19 00:40:14,235 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7663265306122449 [2022-01-19 00:40:14,236 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4506 transitions. [2022-01-19 00:40:14,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4506 transitions. [2022-01-19 00:40:14,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:14,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4506 transitions. [2022-01-19 00:40:14,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.92857142857142) internal successors, (4506), 28 states have internal predecessors, (4506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:14,241 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:14,241 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:14,241 INFO L186 Difference]: Start difference. First operand has 638 places, 513 transitions, 8296 flow. Second operand 28 states and 4506 transitions. [2022-01-19 00:40:14,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 651 places, 609 transitions, 11317 flow [2022-01-19 00:40:14,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 639 places, 609 transitions, 10904 flow, removed 115 selfloop flow, removed 12 redundant places. [2022-01-19 00:40:14,564 INFO L242 Difference]: Finished difference. Result has 651 places, 521 transitions, 8514 flow [2022-01-19 00:40:14,564 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7973, PETRI_DIFFERENCE_MINUEND_PLACES=612, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=8514, PETRI_PLACES=651, PETRI_TRANSITIONS=521} [2022-01-19 00:40:14,564 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 464 predicate places. [2022-01-19 00:40:14,564 INFO L470 AbstractCegarLoop]: Abstraction has has 651 places, 521 transitions, 8514 flow [2022-01-19 00:40:14,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:14,565 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:14,565 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:14,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2022-01-19 00:40:14,565 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:14,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:14,565 INFO L85 PathProgramCache]: Analyzing trace with hash 163131482, now seen corresponding path program 116 times [2022-01-19 00:40:14,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:14,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788632591] [2022-01-19 00:40:14,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:14,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:14,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:14,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:14,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788632591] [2022-01-19 00:40:14,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788632591] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:14,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:14,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:14,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681691767] [2022-01-19 00:40:14,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:14,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:14,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:14,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:14,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:14,670 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:14,671 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 651 places, 521 transitions, 8514 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:14,671 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:14,671 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:14,671 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:16,031 INFO L129 PetriNetUnfolder]: 780/2746 cut-off events. [2022-01-19 00:40:16,032 INFO L130 PetriNetUnfolder]: For 46774/46794 co-relation queries the response was YES. [2022-01-19 00:40:16,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16576 conditions, 2746 events. 780/2746 cut-off events. For 46774/46794 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 21110 event pairs, 384 based on Foata normal form. 3/2651 useless extension candidates. Maximal degree in co-relation 16335. Up to 924 conditions per place. [2022-01-19 00:40:16,091 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 267 selfloop transitions, 152 changer transitions 80/640 dead transitions. [2022-01-19 00:40:16,091 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 683 places, 640 transitions, 12156 flow [2022-01-19 00:40:16,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 00:40:16,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 00:40:16,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7335 transitions. [2022-01-19 00:40:16,094 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7593167701863354 [2022-01-19 00:40:16,094 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7335 transitions. [2022-01-19 00:40:16,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7335 transitions. [2022-01-19 00:40:16,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:16,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7335 transitions. [2022-01-19 00:40:16,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.45652173913044) internal successors, (7335), 46 states have internal predecessors, (7335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:16,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:16,103 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:16,103 INFO L186 Difference]: Start difference. First operand has 651 places, 521 transitions, 8514 flow. Second operand 46 states and 7335 transitions. [2022-01-19 00:40:16,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 683 places, 640 transitions, 12156 flow [2022-01-19 00:40:16,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 668 places, 640 transitions, 11693 flow, removed 81 selfloop flow, removed 15 redundant places. [2022-01-19 00:40:16,448 INFO L242 Difference]: Finished difference. Result has 701 places, 529 transitions, 8796 flow [2022-01-19 00:40:16,449 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8161, PETRI_DIFFERENCE_MINUEND_PLACES=623, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=8796, PETRI_PLACES=701, PETRI_TRANSITIONS=529} [2022-01-19 00:40:16,449 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 514 predicate places. [2022-01-19 00:40:16,449 INFO L470 AbstractCegarLoop]: Abstraction has has 701 places, 529 transitions, 8796 flow [2022-01-19 00:40:16,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:16,449 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:16,449 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:16,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2022-01-19 00:40:16,449 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:16,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:16,450 INFO L85 PathProgramCache]: Analyzing trace with hash -70186094, now seen corresponding path program 117 times [2022-01-19 00:40:16,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:16,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503428453] [2022-01-19 00:40:16,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:16,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:16,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:16,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:16,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503428453] [2022-01-19 00:40:16,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503428453] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:16,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:16,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:16,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743706871] [2022-01-19 00:40:16,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:16,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:16,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:16,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:16,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:16,553 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:16,553 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 701 places, 529 transitions, 8796 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:16,553 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:16,553 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:16,553 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:17,817 INFO L129 PetriNetUnfolder]: 755/2758 cut-off events. [2022-01-19 00:40:17,817 INFO L130 PetriNetUnfolder]: For 45920/45926 co-relation queries the response was YES. [2022-01-19 00:40:17,856 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16174 conditions, 2758 events. 755/2758 cut-off events. For 45920/45926 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 21322 event pairs, 427 based on Foata normal form. 1/2656 useless extension candidates. Maximal degree in co-relation 15909. Up to 935 conditions per place. [2022-01-19 00:40:17,865 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 273 selfloop transitions, 118 changer transitions 58/590 dead transitions. [2022-01-19 00:40:17,865 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 697 places, 590 transitions, 10893 flow [2022-01-19 00:40:17,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:40:17,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:40:17,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4814 transitions. [2022-01-19 00:40:17,881 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7641269841269841 [2022-01-19 00:40:17,881 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4814 transitions. [2022-01-19 00:40:17,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4814 transitions. [2022-01-19 00:40:17,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:17,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4814 transitions. [2022-01-19 00:40:17,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.46666666666667) internal successors, (4814), 30 states have internal predecessors, (4814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:17,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:17,888 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:17,888 INFO L186 Difference]: Start difference. First operand has 701 places, 529 transitions, 8796 flow. Second operand 30 states and 4814 transitions. [2022-01-19 00:40:17,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 697 places, 590 transitions, 10893 flow [2022-01-19 00:40:18,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 590 transitions, 10623 flow, removed 77 selfloop flow, removed 31 redundant places. [2022-01-19 00:40:18,204 INFO L242 Difference]: Finished difference. Result has 677 places, 511 transitions, 8374 flow [2022-01-19 00:40:18,204 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8583, PETRI_DIFFERENCE_MINUEND_PLACES=637, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=8374, PETRI_PLACES=677, PETRI_TRANSITIONS=511} [2022-01-19 00:40:18,205 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 490 predicate places. [2022-01-19 00:40:18,205 INFO L470 AbstractCegarLoop]: Abstraction has has 677 places, 511 transitions, 8374 flow [2022-01-19 00:40:18,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:18,205 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:18,205 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:18,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2022-01-19 00:40:18,205 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:18,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:18,205 INFO L85 PathProgramCache]: Analyzing trace with hash -968457894, now seen corresponding path program 118 times [2022-01-19 00:40:18,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:18,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327413668] [2022-01-19 00:40:18,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:18,206 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:18,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:18,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:18,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327413668] [2022-01-19 00:40:18,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327413668] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:18,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:18,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:18,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335151346] [2022-01-19 00:40:18,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:18,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:18,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:18,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:18,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:18,312 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:18,313 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 677 places, 511 transitions, 8374 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:18,313 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:18,313 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:18,313 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:19,451 INFO L129 PetriNetUnfolder]: 734/2694 cut-off events. [2022-01-19 00:40:19,451 INFO L130 PetriNetUnfolder]: For 42314/42320 co-relation queries the response was YES. [2022-01-19 00:40:19,498 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15349 conditions, 2694 events. 734/2694 cut-off events. For 42314/42320 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20657 event pairs, 422 based on Foata normal form. 1/2594 useless extension candidates. Maximal degree in co-relation 15101. Up to 932 conditions per place. [2022-01-19 00:40:19,506 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 253 selfloop transitions, 115 changer transitions 60/569 dead transitions. [2022-01-19 00:40:19,506 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 679 places, 569 transitions, 10340 flow [2022-01-19 00:40:19,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:40:19,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:40:19,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4808 transitions. [2022-01-19 00:40:19,509 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631746031746032 [2022-01-19 00:40:19,509 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4808 transitions. [2022-01-19 00:40:19,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4808 transitions. [2022-01-19 00:40:19,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:19,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4808 transitions. [2022-01-19 00:40:19,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.26666666666668) internal successors, (4808), 30 states have internal predecessors, (4808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:19,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:19,515 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:19,515 INFO L186 Difference]: Start difference. First operand has 677 places, 511 transitions, 8374 flow. Second operand 30 states and 4808 transitions. [2022-01-19 00:40:19,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 679 places, 569 transitions, 10340 flow [2022-01-19 00:40:19,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 649 places, 569 transitions, 9923 flow, removed 39 selfloop flow, removed 30 redundant places. [2022-01-19 00:40:19,814 INFO L242 Difference]: Finished difference. Result has 657 places, 483 transitions, 7566 flow [2022-01-19 00:40:19,814 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8020, PETRI_DIFFERENCE_MINUEND_PLACES=620, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7566, PETRI_PLACES=657, PETRI_TRANSITIONS=483} [2022-01-19 00:40:19,814 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 470 predicate places. [2022-01-19 00:40:19,814 INFO L470 AbstractCegarLoop]: Abstraction has has 657 places, 483 transitions, 7566 flow [2022-01-19 00:40:19,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:19,815 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:19,815 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:19,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2022-01-19 00:40:19,815 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:19,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:19,815 INFO L85 PathProgramCache]: Analyzing trace with hash 2089879200, now seen corresponding path program 119 times [2022-01-19 00:40:19,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:19,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673011330] [2022-01-19 00:40:19,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:19,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:19,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:19,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:19,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673011330] [2022-01-19 00:40:19,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673011330] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:19,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:19,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:19,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027846771] [2022-01-19 00:40:19,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:19,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:19,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:19,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:19,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:19,933 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:19,933 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 657 places, 483 transitions, 7566 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:19,933 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:19,933 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:19,934 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:21,237 INFO L129 PetriNetUnfolder]: 738/2728 cut-off events. [2022-01-19 00:40:21,237 INFO L130 PetriNetUnfolder]: For 42459/42465 co-relation queries the response was YES. [2022-01-19 00:40:21,283 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15389 conditions, 2728 events. 738/2728 cut-off events. For 42459/42465 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 20993 event pairs, 417 based on Foata normal form. 1/2633 useless extension candidates. Maximal degree in co-relation 15153. Up to 902 conditions per place. [2022-01-19 00:40:21,291 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 265 selfloop transitions, 117 changer transitions 80/603 dead transitions. [2022-01-19 00:40:21,291 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 666 places, 603 transitions, 11184 flow [2022-01-19 00:40:21,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 00:40:21,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 00:40:21,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7185 transitions. [2022-01-19 00:40:21,294 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7603174603174603 [2022-01-19 00:40:21,294 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7185 transitions. [2022-01-19 00:40:21,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7185 transitions. [2022-01-19 00:40:21,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:21,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7185 transitions. [2022-01-19 00:40:21,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.66666666666666) internal successors, (7185), 45 states have internal predecessors, (7185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:21,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:21,303 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:21,303 INFO L186 Difference]: Start difference. First operand has 657 places, 483 transitions, 7566 flow. Second operand 45 states and 7185 transitions. [2022-01-19 00:40:21,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 666 places, 603 transitions, 11184 flow [2022-01-19 00:40:21,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 638 places, 603 transitions, 10541 flow, removed 31 selfloop flow, removed 28 redundant places. [2022-01-19 00:40:21,573 INFO L242 Difference]: Finished difference. Result has 667 places, 482 transitions, 7450 flow [2022-01-19 00:40:21,574 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7119, PETRI_DIFFERENCE_MINUEND_PLACES=594, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=7450, PETRI_PLACES=667, PETRI_TRANSITIONS=482} [2022-01-19 00:40:21,574 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 480 predicate places. [2022-01-19 00:40:21,574 INFO L470 AbstractCegarLoop]: Abstraction has has 667 places, 482 transitions, 7450 flow [2022-01-19 00:40:21,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:21,574 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:21,574 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:21,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2022-01-19 00:40:21,574 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:21,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:21,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1070228796, now seen corresponding path program 120 times [2022-01-19 00:40:21,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:21,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192646745] [2022-01-19 00:40:21,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:21,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:21,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:21,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:21,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192646745] [2022-01-19 00:40:21,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192646745] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:21,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:21,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:21,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795519824] [2022-01-19 00:40:21,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:21,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:21,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:21,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:21,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:21,686 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:21,687 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 667 places, 482 transitions, 7450 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:21,687 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:21,687 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:21,687 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:22,745 INFO L129 PetriNetUnfolder]: 732/2612 cut-off events. [2022-01-19 00:40:22,745 INFO L130 PetriNetUnfolder]: For 42026/42046 co-relation queries the response was YES. [2022-01-19 00:40:22,790 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15249 conditions, 2612 events. 732/2612 cut-off events. For 42026/42046 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 19751 event pairs, 386 based on Foata normal form. 3/2517 useless extension candidates. Maximal degree in co-relation 15000. Up to 930 conditions per place. [2022-01-19 00:40:22,798 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 241 selfloop transitions, 132 changer transitions 57/571 dead transitions. [2022-01-19 00:40:22,798 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 663 places, 571 transitions, 10293 flow [2022-01-19 00:40:22,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:40:22,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:40:22,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4660 transitions. [2022-01-19 00:40:22,801 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7651888341543513 [2022-01-19 00:40:22,801 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4660 transitions. [2022-01-19 00:40:22,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4660 transitions. [2022-01-19 00:40:22,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:22,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4660 transitions. [2022-01-19 00:40:22,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.68965517241378) internal successors, (4660), 29 states have internal predecessors, (4660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:22,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:22,807 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:22,807 INFO L186 Difference]: Start difference. First operand has 667 places, 482 transitions, 7450 flow. Second operand 29 states and 4660 transitions. [2022-01-19 00:40:22,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 663 places, 571 transitions, 10293 flow [2022-01-19 00:40:23,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 622 places, 571 transitions, 9759 flow, removed 100 selfloop flow, removed 41 redundant places. [2022-01-19 00:40:23,094 INFO L242 Difference]: Finished difference. Result has 636 places, 493 transitions, 7689 flow [2022-01-19 00:40:23,095 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7068, PETRI_DIFFERENCE_MINUEND_PLACES=594, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7689, PETRI_PLACES=636, PETRI_TRANSITIONS=493} [2022-01-19 00:40:23,095 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 449 predicate places. [2022-01-19 00:40:23,095 INFO L470 AbstractCegarLoop]: Abstraction has has 636 places, 493 transitions, 7689 flow [2022-01-19 00:40:23,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:23,095 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:23,096 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:23,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2022-01-19 00:40:23,096 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:23,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:23,096 INFO L85 PathProgramCache]: Analyzing trace with hash -904693200, now seen corresponding path program 121 times [2022-01-19 00:40:23,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:23,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064597511] [2022-01-19 00:40:23,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:23,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:23,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:23,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:23,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064597511] [2022-01-19 00:40:23,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064597511] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:23,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:23,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:23,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111681361] [2022-01-19 00:40:23,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:23,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:23,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:23,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:23,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:23,213 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:23,213 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 636 places, 493 transitions, 7689 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:23,213 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:23,213 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:23,213 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:24,263 INFO L129 PetriNetUnfolder]: 728/2686 cut-off events. [2022-01-19 00:40:24,264 INFO L130 PetriNetUnfolder]: For 40230/40236 co-relation queries the response was YES. [2022-01-19 00:40:24,307 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14951 conditions, 2686 events. 728/2686 cut-off events. For 40230/40236 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 20514 event pairs, 418 based on Foata normal form. 1/2588 useless extension candidates. Maximal degree in co-relation 14724. Up to 932 conditions per place. [2022-01-19 00:40:24,315 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 237 selfloop transitions, 136 changer transitions 57/571 dead transitions. [2022-01-19 00:40:24,316 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 648 places, 571 transitions, 10200 flow [2022-01-19 00:40:24,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 00:40:24,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 00:40:24,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4341 transitions. [2022-01-19 00:40:24,318 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7656084656084656 [2022-01-19 00:40:24,318 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4341 transitions. [2022-01-19 00:40:24,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4341 transitions. [2022-01-19 00:40:24,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:24,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4341 transitions. [2022-01-19 00:40:24,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.77777777777777) internal successors, (4341), 27 states have internal predecessors, (4341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:24,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:24,323 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:24,323 INFO L186 Difference]: Start difference. First operand has 636 places, 493 transitions, 7689 flow. Second operand 27 states and 4341 transitions. [2022-01-19 00:40:24,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 648 places, 571 transitions, 10200 flow [2022-01-19 00:40:24,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 635 places, 571 transitions, 9931 flow, removed 53 selfloop flow, removed 13 redundant places. [2022-01-19 00:40:24,581 INFO L242 Difference]: Finished difference. Result has 645 places, 497 transitions, 7891 flow [2022-01-19 00:40:24,581 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7471, PETRI_DIFFERENCE_MINUEND_PLACES=609, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=7891, PETRI_PLACES=645, PETRI_TRANSITIONS=497} [2022-01-19 00:40:24,581 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 458 predicate places. [2022-01-19 00:40:24,581 INFO L470 AbstractCegarLoop]: Abstraction has has 645 places, 497 transitions, 7891 flow [2022-01-19 00:40:24,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:24,582 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:24,582 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:24,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2022-01-19 00:40:24,582 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:24,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:24,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1538965192, now seen corresponding path program 122 times [2022-01-19 00:40:24,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:24,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625240876] [2022-01-19 00:40:24,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:24,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:24,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:24,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:24,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625240876] [2022-01-19 00:40:24,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625240876] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:24,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:24,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:24,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869606720] [2022-01-19 00:40:24,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:24,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:24,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:24,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:24,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:24,684 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:24,684 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 645 places, 497 transitions, 7891 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:24,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:24,685 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:24,685 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:25,927 INFO L129 PetriNetUnfolder]: 736/2735 cut-off events. [2022-01-19 00:40:25,927 INFO L130 PetriNetUnfolder]: For 41926/41932 co-relation queries the response was YES. [2022-01-19 00:40:25,961 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15250 conditions, 2735 events. 736/2735 cut-off events. For 41926/41932 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 21137 event pairs, 421 based on Foata normal form. 1/2634 useless extension candidates. Maximal degree in co-relation 15021. Up to 930 conditions per place. [2022-01-19 00:40:25,968 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 257 selfloop transitions, 126 changer transitions 67/591 dead transitions. [2022-01-19 00:40:25,968 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 670 places, 591 transitions, 10841 flow [2022-01-19 00:40:25,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:40:25,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:40:25,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6077 transitions. [2022-01-19 00:40:25,971 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7615288220551378 [2022-01-19 00:40:25,971 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6077 transitions. [2022-01-19 00:40:25,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6077 transitions. [2022-01-19 00:40:25,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:25,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6077 transitions. [2022-01-19 00:40:25,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.92105263157896) internal successors, (6077), 38 states have internal predecessors, (6077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:25,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:25,979 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:25,979 INFO L186 Difference]: Start difference. First operand has 645 places, 497 transitions, 7891 flow. Second operand 38 states and 6077 transitions. [2022-01-19 00:40:25,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 670 places, 591 transitions, 10841 flow [2022-01-19 00:40:26,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 652 places, 591 transitions, 10384 flow, removed 58 selfloop flow, removed 18 redundant places. [2022-01-19 00:40:26,243 INFO L242 Difference]: Finished difference. Result has 675 places, 505 transitions, 8064 flow [2022-01-19 00:40:26,243 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7508, PETRI_DIFFERENCE_MINUEND_PLACES=615, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8064, PETRI_PLACES=675, PETRI_TRANSITIONS=505} [2022-01-19 00:40:26,243 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 488 predicate places. [2022-01-19 00:40:26,243 INFO L470 AbstractCegarLoop]: Abstraction has has 675 places, 505 transitions, 8064 flow [2022-01-19 00:40:26,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:26,244 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:26,244 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:26,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2022-01-19 00:40:26,244 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:26,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:26,244 INFO L85 PathProgramCache]: Analyzing trace with hash -867861834, now seen corresponding path program 123 times [2022-01-19 00:40:26,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:26,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910908104] [2022-01-19 00:40:26,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:26,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:26,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:26,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:26,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910908104] [2022-01-19 00:40:26,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910908104] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:26,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:26,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:26,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402279694] [2022-01-19 00:40:26,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:26,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:26,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:26,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:26,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:26,356 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:26,357 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 675 places, 505 transitions, 8064 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:26,357 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:26,357 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:26,357 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:27,427 INFO L129 PetriNetUnfolder]: 713/2568 cut-off events. [2022-01-19 00:40:27,427 INFO L130 PetriNetUnfolder]: For 39869/39889 co-relation queries the response was YES. [2022-01-19 00:40:27,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14616 conditions, 2568 events. 713/2568 cut-off events. For 39869/39889 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 19407 event pairs, 386 based on Foata normal form. 3/2472 useless extension candidates. Maximal degree in co-relation 14373. Up to 928 conditions per place. [2022-01-19 00:40:27,480 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 248 selfloop transitions, 108 changer transitions 59/556 dead transitions. [2022-01-19 00:40:27,480 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 678 places, 556 transitions, 9858 flow [2022-01-19 00:40:27,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 00:40:27,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 00:40:27,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4496 transitions. [2022-01-19 00:40:27,482 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646258503401361 [2022-01-19 00:40:27,482 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4496 transitions. [2022-01-19 00:40:27,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4496 transitions. [2022-01-19 00:40:27,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:27,483 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4496 transitions. [2022-01-19 00:40:27,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.57142857142858) internal successors, (4496), 28 states have internal predecessors, (4496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:27,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:27,487 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:27,488 INFO L186 Difference]: Start difference. First operand has 675 places, 505 transitions, 8064 flow. Second operand 28 states and 4496 transitions. [2022-01-19 00:40:27,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 678 places, 556 transitions, 9858 flow [2022-01-19 00:40:27,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 656 places, 556 transitions, 9621 flow, removed 57 selfloop flow, removed 22 redundant places. [2022-01-19 00:40:27,775 INFO L242 Difference]: Finished difference. Result has 665 places, 480 transitions, 7444 flow [2022-01-19 00:40:27,776 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7864, PETRI_DIFFERENCE_MINUEND_PLACES=629, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=7444, PETRI_PLACES=665, PETRI_TRANSITIONS=480} [2022-01-19 00:40:27,776 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 478 predicate places. [2022-01-19 00:40:27,776 INFO L470 AbstractCegarLoop]: Abstraction has has 665 places, 480 transitions, 7444 flow [2022-01-19 00:40:27,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:27,776 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:27,776 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:27,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2022-01-19 00:40:27,777 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:27,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:27,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1805102650, now seen corresponding path program 124 times [2022-01-19 00:40:27,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:27,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308670244] [2022-01-19 00:40:27,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:27,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:27,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:27,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:27,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308670244] [2022-01-19 00:40:27,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308670244] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:27,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:27,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:27,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501001308] [2022-01-19 00:40:27,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:27,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:27,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:27,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:27,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:27,878 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:27,879 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 665 places, 480 transitions, 7444 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:27,879 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:27,879 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:27,879 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:29,016 INFO L129 PetriNetUnfolder]: 702/2635 cut-off events. [2022-01-19 00:40:29,016 INFO L130 PetriNetUnfolder]: For 38460/38466 co-relation queries the response was YES. [2022-01-19 00:40:29,060 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14262 conditions, 2635 events. 702/2635 cut-off events. For 38460/38466 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 20085 event pairs, 417 based on Foata normal form. 1/2537 useless extension candidates. Maximal degree in co-relation 14028. Up to 906 conditions per place. [2022-01-19 00:40:29,068 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 240 selfloop transitions, 110 changer transitions 68/559 dead transitions. [2022-01-19 00:40:29,068 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 559 transitions, 9920 flow [2022-01-19 00:40:29,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 00:40:29,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 00:40:29,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5916 transitions. [2022-01-19 00:40:29,070 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7613899613899614 [2022-01-19 00:40:29,070 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5916 transitions. [2022-01-19 00:40:29,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5916 transitions. [2022-01-19 00:40:29,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:29,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5916 transitions. [2022-01-19 00:40:29,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 159.8918918918919) internal successors, (5916), 37 states have internal predecessors, (5916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:29,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:29,077 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:29,078 INFO L186 Difference]: Start difference. First operand has 665 places, 480 transitions, 7444 flow. Second operand 37 states and 5916 transitions. [2022-01-19 00:40:29,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 559 transitions, 9920 flow [2022-01-19 00:40:29,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 632 places, 559 transitions, 9233 flow, removed 47 selfloop flow, removed 36 redundant places. [2022-01-19 00:40:29,316 INFO L242 Difference]: Finished difference. Result has 654 places, 474 transitions, 7044 flow [2022-01-19 00:40:29,316 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6897, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=7044, PETRI_PLACES=654, PETRI_TRANSITIONS=474} [2022-01-19 00:40:29,316 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 467 predicate places. [2022-01-19 00:40:29,316 INFO L470 AbstractCegarLoop]: Abstraction has has 654 places, 474 transitions, 7044 flow [2022-01-19 00:40:29,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:29,316 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:29,317 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:29,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2022-01-19 00:40:29,317 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:29,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:29,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1792242654, now seen corresponding path program 125 times [2022-01-19 00:40:29,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:29,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075352289] [2022-01-19 00:40:29,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:29,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:29,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:29,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:29,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075352289] [2022-01-19 00:40:29,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075352289] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:29,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:29,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:29,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513457370] [2022-01-19 00:40:29,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:29,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:29,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:29,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:29,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:29,419 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:29,420 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 654 places, 474 transitions, 7044 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:29,420 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:29,420 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:29,420 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:30,439 INFO L129 PetriNetUnfolder]: 687/2506 cut-off events. [2022-01-19 00:40:30,439 INFO L130 PetriNetUnfolder]: For 35136/35156 co-relation queries the response was YES. [2022-01-19 00:40:30,477 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13670 conditions, 2506 events. 687/2506 cut-off events. For 35136/35156 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 18766 event pairs, 378 based on Foata normal form. 3/2414 useless extension candidates. Maximal degree in co-relation 13437. Up to 914 conditions per place. [2022-01-19 00:40:30,484 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 237 selfloop transitions, 99 changer transitions 58/535 dead transitions. [2022-01-19 00:40:30,484 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 659 places, 535 transitions, 9061 flow [2022-01-19 00:40:30,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:40:30,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:40:30,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4652 transitions. [2022-01-19 00:40:30,486 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7638752052545156 [2022-01-19 00:40:30,486 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4652 transitions. [2022-01-19 00:40:30,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4652 transitions. [2022-01-19 00:40:30,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:30,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4652 transitions. [2022-01-19 00:40:30,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.41379310344828) internal successors, (4652), 29 states have internal predecessors, (4652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:30,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:30,492 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:30,492 INFO L186 Difference]: Start difference. First operand has 654 places, 474 transitions, 7044 flow. Second operand 29 states and 4652 transitions. [2022-01-19 00:40:30,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 659 places, 535 transitions, 9061 flow [2022-01-19 00:40:30,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 634 places, 535 transitions, 8702 flow, removed 83 selfloop flow, removed 25 redundant places. [2022-01-19 00:40:30,724 INFO L242 Difference]: Finished difference. Result has 645 places, 461 transitions, 6684 flow [2022-01-19 00:40:30,724 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6787, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6684, PETRI_PLACES=645, PETRI_TRANSITIONS=461} [2022-01-19 00:40:30,724 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 458 predicate places. [2022-01-19 00:40:30,724 INFO L470 AbstractCegarLoop]: Abstraction has has 645 places, 461 transitions, 6684 flow [2022-01-19 00:40:30,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:30,724 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:30,725 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:30,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2022-01-19 00:40:30,725 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:30,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:30,725 INFO L85 PathProgramCache]: Analyzing trace with hash -595019592, now seen corresponding path program 126 times [2022-01-19 00:40:30,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:30,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963124924] [2022-01-19 00:40:30,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:30,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:30,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:30,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:30,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963124924] [2022-01-19 00:40:30,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963124924] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:30,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:30,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:30,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069564742] [2022-01-19 00:40:30,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:30,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:30,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:30,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:30,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:30,826 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:30,826 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 645 places, 461 transitions, 6684 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:30,826 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:30,826 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:30,826 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:31,823 INFO L129 PetriNetUnfolder]: 660/2428 cut-off events. [2022-01-19 00:40:31,823 INFO L130 PetriNetUnfolder]: For 31312/31332 co-relation queries the response was YES. [2022-01-19 00:40:31,861 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12768 conditions, 2428 events. 660/2428 cut-off events. For 31312/31332 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 18067 event pairs, 376 based on Foata normal form. 3/2337 useless extension candidates. Maximal degree in co-relation 12543. Up to 900 conditions per place. [2022-01-19 00:40:31,868 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 214 selfloop transitions, 80 changer transitions 61/496 dead transitions. [2022-01-19 00:40:31,868 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 648 places, 496 transitions, 7898 flow [2022-01-19 00:40:31,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:40:31,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:40:31,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4804 transitions. [2022-01-19 00:40:31,871 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625396825396825 [2022-01-19 00:40:31,871 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4804 transitions. [2022-01-19 00:40:31,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4804 transitions. [2022-01-19 00:40:31,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:31,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4804 transitions. [2022-01-19 00:40:31,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.13333333333333) internal successors, (4804), 30 states have internal predecessors, (4804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:31,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:31,877 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:31,877 INFO L186 Difference]: Start difference. First operand has 645 places, 461 transitions, 6684 flow. Second operand 30 states and 4804 transitions. [2022-01-19 00:40:31,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 648 places, 496 transitions, 7898 flow [2022-01-19 00:40:32,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 619 places, 496 transitions, 7519 flow, removed 29 selfloop flow, removed 29 redundant places. [2022-01-19 00:40:32,079 INFO L242 Difference]: Finished difference. Result has 624 places, 419 transitions, 5505 flow [2022-01-19 00:40:32,080 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6335, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5505, PETRI_PLACES=624, PETRI_TRANSITIONS=419} [2022-01-19 00:40:32,080 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 437 predicate places. [2022-01-19 00:40:32,080 INFO L470 AbstractCegarLoop]: Abstraction has has 624 places, 419 transitions, 5505 flow [2022-01-19 00:40:32,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:32,080 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:32,080 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:32,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2022-01-19 00:40:32,080 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:32,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:32,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1959926434, now seen corresponding path program 127 times [2022-01-19 00:40:32,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:32,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155358744] [2022-01-19 00:40:32,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:32,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:32,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:32,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:32,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155358744] [2022-01-19 00:40:32,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155358744] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:32,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:32,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:32,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537975386] [2022-01-19 00:40:32,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:32,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:32,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:32,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:32,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:32,204 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:32,205 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 419 transitions, 5505 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:32,205 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:32,205 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:32,205 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:33,259 INFO L129 PetriNetUnfolder]: 660/2445 cut-off events. [2022-01-19 00:40:33,259 INFO L130 PetriNetUnfolder]: For 29990/30010 co-relation queries the response was YES. [2022-01-19 00:40:33,295 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12615 conditions, 2445 events. 660/2445 cut-off events. For 29990/30010 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 18280 event pairs, 374 based on Foata normal form. 3/2357 useless extension candidates. Maximal degree in co-relation 12402. Up to 886 conditions per place. [2022-01-19 00:40:33,302 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 218 selfloop transitions, 77 changer transitions 68/504 dead transitions. [2022-01-19 00:40:33,302 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 504 transitions, 7820 flow [2022-01-19 00:40:33,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 00:40:33,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 00:40:33,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5757 transitions. [2022-01-19 00:40:33,305 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7615079365079365 [2022-01-19 00:40:33,305 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5757 transitions. [2022-01-19 00:40:33,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5757 transitions. [2022-01-19 00:40:33,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:33,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5757 transitions. [2022-01-19 00:40:33,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 159.91666666666666) internal successors, (5757), 36 states have internal predecessors, (5757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:33,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:33,312 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:33,312 INFO L186 Difference]: Start difference. First operand has 624 places, 419 transitions, 5505 flow. Second operand 36 states and 5757 transitions. [2022-01-19 00:40:33,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 504 transitions, 7820 flow [2022-01-19 00:40:33,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 504 transitions, 7103 flow, removed 30 selfloop flow, removed 43 redundant places. [2022-01-19 00:40:33,482 INFO L242 Difference]: Finished difference. Result has 593 places, 413 transitions, 5029 flow [2022-01-19 00:40:33,482 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4956, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=5029, PETRI_PLACES=593, PETRI_TRANSITIONS=413} [2022-01-19 00:40:33,483 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 406 predicate places. [2022-01-19 00:40:33,483 INFO L470 AbstractCegarLoop]: Abstraction has has 593 places, 413 transitions, 5029 flow [2022-01-19 00:40:33,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:33,483 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:33,483 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:33,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2022-01-19 00:40:33,483 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:33,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:33,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1141650722, now seen corresponding path program 128 times [2022-01-19 00:40:33,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:33,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255330122] [2022-01-19 00:40:33,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:33,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:33,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:33,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:33,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:33,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255330122] [2022-01-19 00:40:33,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255330122] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:33,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:33,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:33,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311115229] [2022-01-19 00:40:33,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:33,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:33,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:33,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:33,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:33,591 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:33,592 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 413 transitions, 5029 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:33,592 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:33,592 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:33,592 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:34,504 INFO L129 PetriNetUnfolder]: 625/2395 cut-off events. [2022-01-19 00:40:34,504 INFO L130 PetriNetUnfolder]: For 25207/25213 co-relation queries the response was YES. [2022-01-19 00:40:34,537 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11546 conditions, 2395 events. 625/2395 cut-off events. For 25207/25213 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 17807 event pairs, 406 based on Foata normal form. 1/2302 useless extension candidates. Maximal degree in co-relation 11338. Up to 879 conditions per place. [2022-01-19 00:40:34,544 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 203 selfloop transitions, 37 changer transitions 64/445 dead transitions. [2022-01-19 00:40:34,544 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 445 transitions, 6019 flow [2022-01-19 00:40:34,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:40:34,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:40:34,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4789 transitions. [2022-01-19 00:40:34,546 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7601587301587301 [2022-01-19 00:40:34,546 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4789 transitions. [2022-01-19 00:40:34,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4789 transitions. [2022-01-19 00:40:34,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:34,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4789 transitions. [2022-01-19 00:40:34,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.63333333333333) internal successors, (4789), 30 states have internal predecessors, (4789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:34,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:34,552 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:34,552 INFO L186 Difference]: Start difference. First operand has 593 places, 413 transitions, 5029 flow. Second operand 30 states and 4789 transitions. [2022-01-19 00:40:34,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 445 transitions, 6019 flow [2022-01-19 00:40:34,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 445 transitions, 5717 flow, removed 41 selfloop flow, removed 40 redundant places. [2022-01-19 00:40:34,689 INFO L242 Difference]: Finished difference. Result has 567 places, 365 transitions, 3865 flow [2022-01-19 00:40:34,689 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4749, PETRI_DIFFERENCE_MINUEND_PLACES=531, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3865, PETRI_PLACES=567, PETRI_TRANSITIONS=365} [2022-01-19 00:40:34,690 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 380 predicate places. [2022-01-19 00:40:34,690 INFO L470 AbstractCegarLoop]: Abstraction has has 567 places, 365 transitions, 3865 flow [2022-01-19 00:40:34,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:34,690 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:34,690 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:34,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2022-01-19 00:40:34,690 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:34,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:34,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1310608822, now seen corresponding path program 129 times [2022-01-19 00:40:34,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:34,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372411791] [2022-01-19 00:40:34,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:34,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:34,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:34,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:34,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:34,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372411791] [2022-01-19 00:40:34,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372411791] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:34,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:34,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:34,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538313526] [2022-01-19 00:40:34,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:34,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:34,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:34,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:34,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:34,798 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:34,798 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 567 places, 365 transitions, 3865 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:34,799 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:34,799 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:34,799 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:35,604 INFO L129 PetriNetUnfolder]: 597/2215 cut-off events. [2022-01-19 00:40:35,605 INFO L130 PetriNetUnfolder]: For 21691/21711 co-relation queries the response was YES. [2022-01-19 00:40:35,636 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10531 conditions, 2215 events. 597/2215 cut-off events. For 21691/21711 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 15913 event pairs, 364 based on Foata normal form. 3/2128 useless extension candidates. Maximal degree in co-relation 10343. Up to 863 conditions per place. [2022-01-19 00:40:35,642 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 159 selfloop transitions, 39 changer transitions 63/402 dead transitions. [2022-01-19 00:40:35,643 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 537 places, 402 transitions, 4866 flow [2022-01-19 00:40:35,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:40:35,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:40:35,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4796 transitions. [2022-01-19 00:40:35,645 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612698412698413 [2022-01-19 00:40:35,645 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4796 transitions. [2022-01-19 00:40:35,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4796 transitions. [2022-01-19 00:40:35,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:35,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4796 transitions. [2022-01-19 00:40:35,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.86666666666667) internal successors, (4796), 30 states have internal predecessors, (4796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:35,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:35,651 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:35,651 INFO L186 Difference]: Start difference. First operand has 567 places, 365 transitions, 3865 flow. Second operand 30 states and 4796 transitions. [2022-01-19 00:40:35,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 537 places, 402 transitions, 4866 flow [2022-01-19 00:40:35,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 402 transitions, 4588 flow, removed 26 selfloop flow, removed 28 redundant places. [2022-01-19 00:40:35,759 INFO L242 Difference]: Finished difference. Result has 518 places, 323 transitions, 2957 flow [2022-01-19 00:40:35,760 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3627, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2957, PETRI_PLACES=518, PETRI_TRANSITIONS=323} [2022-01-19 00:40:35,760 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 331 predicate places. [2022-01-19 00:40:35,760 INFO L470 AbstractCegarLoop]: Abstraction has has 518 places, 323 transitions, 2957 flow [2022-01-19 00:40:35,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:35,760 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:35,760 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:35,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2022-01-19 00:40:35,761 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:35,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:35,761 INFO L85 PathProgramCache]: Analyzing trace with hash -471642470, now seen corresponding path program 130 times [2022-01-19 00:40:35,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:35,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493507498] [2022-01-19 00:40:35,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:35,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:35,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:35,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:35,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:35,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493507498] [2022-01-19 00:40:35,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493507498] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:35,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:35,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:35,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545984788] [2022-01-19 00:40:35,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:35,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:35,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:35,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:35,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:35,870 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:35,871 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 518 places, 323 transitions, 2957 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:35,871 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:35,871 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:35,871 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:36,616 INFO L129 PetriNetUnfolder]: 565/2098 cut-off events. [2022-01-19 00:40:36,616 INFO L130 PetriNetUnfolder]: For 18525/18545 co-relation queries the response was YES. [2022-01-19 00:40:36,643 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9586 conditions, 2098 events. 565/2098 cut-off events. For 18525/18545 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 14785 event pairs, 358 based on Foata normal form. 3/2013 useless extension candidates. Maximal degree in co-relation 9406. Up to 841 conditions per place. [2022-01-19 00:40:36,648 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 133 selfloop transitions, 10 changer transitions 65/349 dead transitions. [2022-01-19 00:40:36,648 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 500 places, 349 transitions, 3638 flow [2022-01-19 00:40:36,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:40:36,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:40:36,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4768 transitions. [2022-01-19 00:40:36,650 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7568253968253968 [2022-01-19 00:40:36,651 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4768 transitions. [2022-01-19 00:40:36,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4768 transitions. [2022-01-19 00:40:36,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:36,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4768 transitions. [2022-01-19 00:40:36,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 158.93333333333334) internal successors, (4768), 30 states have internal predecessors, (4768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:36,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:36,656 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:36,656 INFO L186 Difference]: Start difference. First operand has 518 places, 323 transitions, 2957 flow. Second operand 30 states and 4768 transitions. [2022-01-19 00:40:36,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 500 places, 349 transitions, 3638 flow [2022-01-19 00:40:36,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 349 transitions, 3404 flow, removed 23 selfloop flow, removed 33 redundant places. [2022-01-19 00:40:36,745 INFO L242 Difference]: Finished difference. Result has 472 places, 268 transitions, 1865 flow [2022-01-19 00:40:36,745 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2737, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1865, PETRI_PLACES=472, PETRI_TRANSITIONS=268} [2022-01-19 00:40:36,745 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 285 predicate places. [2022-01-19 00:40:36,745 INFO L470 AbstractCegarLoop]: Abstraction has has 472 places, 268 transitions, 1865 flow [2022-01-19 00:40:36,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:36,746 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:36,746 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:36,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2022-01-19 00:40:36,746 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:36,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:36,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1399152340, now seen corresponding path program 131 times [2022-01-19 00:40:36,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:36,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208763161] [2022-01-19 00:40:36,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:36,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:36,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:36,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:36,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208763161] [2022-01-19 00:40:36,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208763161] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:36,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:36,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:36,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096126442] [2022-01-19 00:40:36,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:36,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:36,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:36,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:36,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:36,868 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:36,868 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 268 transitions, 1865 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:36,868 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:36,868 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:36,868 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:37,922 INFO L129 PetriNetUnfolder]: 598/2188 cut-off events. [2022-01-19 00:40:37,922 INFO L130 PetriNetUnfolder]: For 18836/18849 co-relation queries the response was YES. [2022-01-19 00:40:37,949 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9987 conditions, 2188 events. 598/2188 cut-off events. For 18836/18849 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 15645 event pairs, 275 based on Foata normal form. 1/2110 useless extension candidates. Maximal degree in co-relation 9820. Up to 777 conditions per place. [2022-01-19 00:40:37,955 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 180 selfloop transitions, 57 changer transitions 84/462 dead transitions. [2022-01-19 00:40:37,955 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 462 transitions, 5056 flow [2022-01-19 00:40:37,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-19 00:40:37,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-01-19 00:40:37,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 8587 transitions. [2022-01-19 00:40:37,958 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7572310405643738 [2022-01-19 00:40:37,959 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 8587 transitions. [2022-01-19 00:40:37,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 8587 transitions. [2022-01-19 00:40:37,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:37,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 8587 transitions. [2022-01-19 00:40:37,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 159.0185185185185) internal successors, (8587), 54 states have internal predecessors, (8587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:37,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 210.0) internal successors, (11550), 55 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:37,969 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 210.0) internal successors, (11550), 55 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:37,969 INFO L186 Difference]: Start difference. First operand has 472 places, 268 transitions, 1865 flow. Second operand 54 states and 8587 transitions. [2022-01-19 00:40:37,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 462 transitions, 5056 flow [2022-01-19 00:40:38,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 462 transitions, 4760 flow, removed 71 selfloop flow, removed 31 redundant places. [2022-01-19 00:40:38,033 INFO L242 Difference]: Finished difference. Result has 460 places, 281 transitions, 2171 flow [2022-01-19 00:40:38,033 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1745, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=2171, PETRI_PLACES=460, PETRI_TRANSITIONS=281} [2022-01-19 00:40:38,033 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 273 predicate places. [2022-01-19 00:40:38,033 INFO L470 AbstractCegarLoop]: Abstraction has has 460 places, 281 transitions, 2171 flow [2022-01-19 00:40:38,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:38,034 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:38,034 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:38,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2022-01-19 00:40:38,034 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:38,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:38,034 INFO L85 PathProgramCache]: Analyzing trace with hash -307017874, now seen corresponding path program 132 times [2022-01-19 00:40:38,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:38,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402484118] [2022-01-19 00:40:38,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:38,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:38,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:38,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:38,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:38,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402484118] [2022-01-19 00:40:38,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402484118] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:38,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:38,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:38,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375795437] [2022-01-19 00:40:38,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:38,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:38,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:38,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:38,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:38,139 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:38,140 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 281 transitions, 2171 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:38,140 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:38,140 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:38,140 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:39,209 INFO L129 PetriNetUnfolder]: 656/2333 cut-off events. [2022-01-19 00:40:39,209 INFO L130 PetriNetUnfolder]: For 24656/24669 co-relation queries the response was YES. [2022-01-19 00:40:39,241 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11655 conditions, 2333 events. 656/2333 cut-off events. For 24656/24669 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 16861 event pairs, 348 based on Foata normal form. 1/2244 useless extension candidates. Maximal degree in co-relation 11472. Up to 792 conditions per place. [2022-01-19 00:40:39,247 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 179 selfloop transitions, 54 changer transitions 79/453 dead transitions. [2022-01-19 00:40:39,248 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 453 transitions, 5913 flow [2022-01-19 00:40:39,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-19 00:40:39,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-01-19 00:40:39,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 8125 transitions. [2022-01-19 00:40:39,259 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7586367880485527 [2022-01-19 00:40:39,259 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 8125 transitions. [2022-01-19 00:40:39,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 8125 transitions. [2022-01-19 00:40:39,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:39,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 8125 transitions. [2022-01-19 00:40:39,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 159.31372549019608) internal successors, (8125), 51 states have internal predecessors, (8125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:39,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 210.0) internal successors, (10920), 52 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:39,269 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 210.0) internal successors, (10920), 52 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:39,269 INFO L186 Difference]: Start difference. First operand has 460 places, 281 transitions, 2171 flow. Second operand 51 states and 8125 transitions. [2022-01-19 00:40:39,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 453 transitions, 5913 flow [2022-01-19 00:40:39,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 453 transitions, 5217 flow, removed 304 selfloop flow, removed 40 redundant places. [2022-01-19 00:40:39,352 INFO L242 Difference]: Finished difference. Result has 474 places, 306 transitions, 2758 flow [2022-01-19 00:40:39,352 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2015, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=2758, PETRI_PLACES=474, PETRI_TRANSITIONS=306} [2022-01-19 00:40:39,352 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 287 predicate places. [2022-01-19 00:40:39,353 INFO L470 AbstractCegarLoop]: Abstraction has has 474 places, 306 transitions, 2758 flow [2022-01-19 00:40:39,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:39,353 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:39,353 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:39,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2022-01-19 00:40:39,353 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:39,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:39,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1321919674, now seen corresponding path program 133 times [2022-01-19 00:40:39,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:39,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507961306] [2022-01-19 00:40:39,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:39,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:39,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:39,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:39,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:39,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507961306] [2022-01-19 00:40:39,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507961306] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:39,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:39,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:39,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023296909] [2022-01-19 00:40:39,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:39,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:39,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:39,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:39,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:39,452 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:39,453 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 306 transitions, 2758 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:39,453 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:39,453 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:39,453 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:40,617 INFO L129 PetriNetUnfolder]: 664/2377 cut-off events. [2022-01-19 00:40:40,617 INFO L130 PetriNetUnfolder]: For 32508/32521 co-relation queries the response was YES. [2022-01-19 00:40:40,649 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12902 conditions, 2377 events. 664/2377 cut-off events. For 32508/32521 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 17345 event pairs, 288 based on Foata normal form. 1/2296 useless extension candidates. Maximal degree in co-relation 12711. Up to 805 conditions per place. [2022-01-19 00:40:40,656 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 208 selfloop transitions, 69 changer transitions 82/500 dead transitions. [2022-01-19 00:40:40,657 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 500 transitions, 6956 flow [2022-01-19 00:40:40,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-19 00:40:40,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-01-19 00:40:40,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 8437 transitions. [2022-01-19 00:40:40,660 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7580413297394429 [2022-01-19 00:40:40,660 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 8437 transitions. [2022-01-19 00:40:40,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 8437 transitions. [2022-01-19 00:40:40,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:40,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 8437 transitions. [2022-01-19 00:40:40,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 159.18867924528303) internal successors, (8437), 53 states have internal predecessors, (8437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:40,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 210.0) internal successors, (11340), 54 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:40,671 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 210.0) internal successors, (11340), 54 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:40,671 INFO L186 Difference]: Start difference. First operand has 474 places, 306 transitions, 2758 flow. Second operand 53 states and 8437 transitions. [2022-01-19 00:40:40,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 500 transitions, 6956 flow [2022-01-19 00:40:40,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 500 transitions, 6376 flow, removed 256 selfloop flow, removed 28 redundant places. [2022-01-19 00:40:40,793 INFO L242 Difference]: Finished difference. Result has 501 places, 321 transitions, 3101 flow [2022-01-19 00:40:40,793 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2544, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=3101, PETRI_PLACES=501, PETRI_TRANSITIONS=321} [2022-01-19 00:40:40,793 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 314 predicate places. [2022-01-19 00:40:40,793 INFO L470 AbstractCegarLoop]: Abstraction has has 501 places, 321 transitions, 3101 flow [2022-01-19 00:40:40,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:40,794 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:40,794 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:40,794 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2022-01-19 00:40:40,794 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:40,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:40,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1557014560, now seen corresponding path program 134 times [2022-01-19 00:40:40,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:40,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206885423] [2022-01-19 00:40:40,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:40,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:40,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:40,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:40,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:40,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206885423] [2022-01-19 00:40:40,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206885423] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:40,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:40,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:40,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126048820] [2022-01-19 00:40:40,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:40,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:40,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:40,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:40,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:40,903 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:40,904 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 321 transitions, 3101 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:40,904 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:40,904 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:40,904 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:42,179 INFO L129 PetriNetUnfolder]: 659/2357 cut-off events. [2022-01-19 00:40:42,179 INFO L130 PetriNetUnfolder]: For 35591/35604 co-relation queries the response was YES. [2022-01-19 00:40:42,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13261 conditions, 2357 events. 659/2357 cut-off events. For 35591/35604 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 17077 event pairs, 319 based on Foata normal form. 1/2273 useless extension candidates. Maximal degree in co-relation 13054. Up to 803 conditions per place. [2022-01-19 00:40:42,221 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 208 selfloop transitions, 66 changer transitions 82/497 dead transitions. [2022-01-19 00:40:42,221 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 511 places, 497 transitions, 7651 flow [2022-01-19 00:40:42,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-19 00:40:42,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-01-19 00:40:42,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 8281 transitions. [2022-01-19 00:40:42,225 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7583333333333333 [2022-01-19 00:40:42,225 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 8281 transitions. [2022-01-19 00:40:42,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 8281 transitions. [2022-01-19 00:40:42,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:42,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 8281 transitions. [2022-01-19 00:40:42,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 159.25) internal successors, (8281), 52 states have internal predecessors, (8281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:42,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:42,235 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:42,235 INFO L186 Difference]: Start difference. First operand has 501 places, 321 transitions, 3101 flow. Second operand 52 states and 8281 transitions. [2022-01-19 00:40:42,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 511 places, 497 transitions, 7651 flow [2022-01-19 00:40:42,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 497 transitions, 6945 flow, removed 315 selfloop flow, removed 39 redundant places. [2022-01-19 00:40:42,378 INFO L242 Difference]: Finished difference. Result has 516 places, 334 transitions, 3569 flow [2022-01-19 00:40:42,379 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2911, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=3569, PETRI_PLACES=516, PETRI_TRANSITIONS=334} [2022-01-19 00:40:42,379 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 329 predicate places. [2022-01-19 00:40:42,379 INFO L470 AbstractCegarLoop]: Abstraction has has 516 places, 334 transitions, 3569 flow [2022-01-19 00:40:42,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:42,379 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:42,379 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:42,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2022-01-19 00:40:42,379 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:42,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:42,380 INFO L85 PathProgramCache]: Analyzing trace with hash -743567740, now seen corresponding path program 135 times [2022-01-19 00:40:42,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:42,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225420407] [2022-01-19 00:40:42,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:42,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:42,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:42,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:42,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:42,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225420407] [2022-01-19 00:40:42,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225420407] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:42,476 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:42,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:42,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049479959] [2022-01-19 00:40:42,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:42,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:42,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:42,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:42,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:42,478 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:42,479 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 334 transitions, 3569 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:42,479 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:42,479 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:42,479 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:43,602 INFO L129 PetriNetUnfolder]: 651/2330 cut-off events. [2022-01-19 00:40:43,602 INFO L130 PetriNetUnfolder]: For 39361/39374 co-relation queries the response was YES. [2022-01-19 00:40:43,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13447 conditions, 2330 events. 651/2330 cut-off events. For 39361/39374 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 16841 event pairs, 277 based on Foata normal form. 1/2251 useless extension candidates. Maximal degree in co-relation 13232. Up to 805 conditions per place. [2022-01-19 00:40:43,642 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 196 selfloop transitions, 85 changer transitions 76/498 dead transitions. [2022-01-19 00:40:43,643 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 498 transitions, 7134 flow [2022-01-19 00:40:43,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 00:40:43,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 00:40:43,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7328 transitions. [2022-01-19 00:40:43,646 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.758592132505176 [2022-01-19 00:40:43,646 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7328 transitions. [2022-01-19 00:40:43,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7328 transitions. [2022-01-19 00:40:43,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:43,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7328 transitions. [2022-01-19 00:40:43,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.30434782608697) internal successors, (7328), 46 states have internal predecessors, (7328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:43,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:43,655 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:43,655 INFO L186 Difference]: Start difference. First operand has 516 places, 334 transitions, 3569 flow. Second operand 46 states and 7328 transitions. [2022-01-19 00:40:43,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 498 transitions, 7134 flow [2022-01-19 00:40:43,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 498 transitions, 6374 flow, removed 337 selfloop flow, removed 38 redundant places. [2022-01-19 00:40:43,823 INFO L242 Difference]: Finished difference. Result has 515 places, 338 transitions, 3636 flow [2022-01-19 00:40:43,824 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3283, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=3636, PETRI_PLACES=515, PETRI_TRANSITIONS=338} [2022-01-19 00:40:43,824 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 328 predicate places. [2022-01-19 00:40:43,824 INFO L470 AbstractCegarLoop]: Abstraction has has 515 places, 338 transitions, 3636 flow [2022-01-19 00:40:43,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:43,824 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:43,824 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:43,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2022-01-19 00:40:43,825 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:43,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:43,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1771564934, now seen corresponding path program 136 times [2022-01-19 00:40:43,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:43,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191649434] [2022-01-19 00:40:43,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:43,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:43,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:43,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:43,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191649434] [2022-01-19 00:40:43,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191649434] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:43,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:43,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:43,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968434627] [2022-01-19 00:40:43,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:43,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:43,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:43,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:43,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:43,921 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:43,922 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 338 transitions, 3636 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:43,922 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:43,922 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:43,922 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:45,099 INFO L129 PetriNetUnfolder]: 668/2384 cut-off events. [2022-01-19 00:40:45,099 INFO L130 PetriNetUnfolder]: For 38973/38986 co-relation queries the response was YES. [2022-01-19 00:40:45,135 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14042 conditions, 2384 events. 668/2384 cut-off events. For 38973/38986 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 17433 event pairs, 290 based on Foata normal form. 1/2301 useless extension candidates. Maximal degree in co-relation 13832. Up to 815 conditions per place. [2022-01-19 00:40:45,142 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 213 selfloop transitions, 82 changer transitions 74/510 dead transitions. [2022-01-19 00:40:45,142 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 510 transitions, 7860 flow [2022-01-19 00:40:45,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 00:40:45,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 00:40:45,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7177 transitions. [2022-01-19 00:40:45,146 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7594708994708995 [2022-01-19 00:40:45,146 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7177 transitions. [2022-01-19 00:40:45,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7177 transitions. [2022-01-19 00:40:45,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:45,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7177 transitions. [2022-01-19 00:40:45,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.48888888888888) internal successors, (7177), 45 states have internal predecessors, (7177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:45,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:45,155 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:45,155 INFO L186 Difference]: Start difference. First operand has 515 places, 338 transitions, 3636 flow. Second operand 45 states and 7177 transitions. [2022-01-19 00:40:45,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 510 transitions, 7860 flow [2022-01-19 00:40:45,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 510 transitions, 7239 flow, removed 263 selfloop flow, removed 33 redundant places. [2022-01-19 00:40:45,330 INFO L242 Difference]: Finished difference. Result has 525 places, 359 transitions, 4251 flow [2022-01-19 00:40:45,330 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3464, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=4251, PETRI_PLACES=525, PETRI_TRANSITIONS=359} [2022-01-19 00:40:45,331 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 338 predicate places. [2022-01-19 00:40:45,331 INFO L470 AbstractCegarLoop]: Abstraction has has 525 places, 359 transitions, 4251 flow [2022-01-19 00:40:45,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:45,331 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:45,331 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:45,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2022-01-19 00:40:45,331 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:45,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:45,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1224069286, now seen corresponding path program 137 times [2022-01-19 00:40:45,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:45,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80806591] [2022-01-19 00:40:45,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:45,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:45,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:45,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:45,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:45,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80806591] [2022-01-19 00:40:45,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80806591] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:45,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:45,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:45,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289033945] [2022-01-19 00:40:45,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:45,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:45,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:45,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:45,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:45,429 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:45,430 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 359 transitions, 4251 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:45,430 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:45,430 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:45,430 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:46,558 INFO L129 PetriNetUnfolder]: 663/2381 cut-off events. [2022-01-19 00:40:46,558 INFO L130 PetriNetUnfolder]: For 40672/40685 co-relation queries the response was YES. [2022-01-19 00:40:46,596 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14289 conditions, 2381 events. 663/2381 cut-off events. For 40672/40685 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 17413 event pairs, 292 based on Foata normal form. 1/2299 useless extension candidates. Maximal degree in co-relation 14075. Up to 813 conditions per place. [2022-01-19 00:40:46,604 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 214 selfloop transitions, 82 changer transitions 75/512 dead transitions. [2022-01-19 00:40:46,605 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 512 transitions, 8003 flow [2022-01-19 00:40:46,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 00:40:46,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 00:40:46,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7335 transitions. [2022-01-19 00:40:46,608 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7593167701863354 [2022-01-19 00:40:46,608 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7335 transitions. [2022-01-19 00:40:46,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7335 transitions. [2022-01-19 00:40:46,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:46,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7335 transitions. [2022-01-19 00:40:46,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.45652173913044) internal successors, (7335), 46 states have internal predecessors, (7335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:46,616 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:46,617 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:46,617 INFO L186 Difference]: Start difference. First operand has 525 places, 359 transitions, 4251 flow. Second operand 46 states and 7335 transitions. [2022-01-19 00:40:46,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 512 transitions, 8003 flow [2022-01-19 00:40:46,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 512 transitions, 7305 flow, removed 330 selfloop flow, removed 27 redundant places. [2022-01-19 00:40:46,813 INFO L242 Difference]: Finished difference. Result has 543 places, 362 transitions, 4329 flow [2022-01-19 00:40:46,813 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3998, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=4329, PETRI_PLACES=543, PETRI_TRANSITIONS=362} [2022-01-19 00:40:46,813 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 356 predicate places. [2022-01-19 00:40:46,813 INFO L470 AbstractCegarLoop]: Abstraction has has 543 places, 362 transitions, 4329 flow [2022-01-19 00:40:46,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:46,814 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:46,814 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:46,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2022-01-19 00:40:46,814 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:46,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:46,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1784084954, now seen corresponding path program 138 times [2022-01-19 00:40:46,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:46,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298403911] [2022-01-19 00:40:46,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:46,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:46,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:46,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:46,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298403911] [2022-01-19 00:40:46,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298403911] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:46,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:46,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:46,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611120273] [2022-01-19 00:40:46,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:46,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:46,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:46,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:46,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:46,918 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:46,918 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 543 places, 362 transitions, 4329 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:46,919 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:46,919 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:46,919 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:48,114 INFO L129 PetriNetUnfolder]: 699/2451 cut-off events. [2022-01-19 00:40:48,114 INFO L130 PetriNetUnfolder]: For 44432/44445 co-relation queries the response was YES. [2022-01-19 00:40:48,150 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15235 conditions, 2451 events. 699/2451 cut-off events. For 44432/44445 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 17943 event pairs, 333 based on Foata normal form. 1/2365 useless extension candidates. Maximal degree in co-relation 15015. Up to 823 conditions per place. [2022-01-19 00:40:48,158 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 212 selfloop transitions, 100 changer transitions 73/526 dead transitions. [2022-01-19 00:40:48,158 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 553 places, 526 transitions, 8605 flow [2022-01-19 00:40:48,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 00:40:48,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 00:40:48,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7021 transitions. [2022-01-19 00:40:48,161 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7598484848484849 [2022-01-19 00:40:48,161 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7021 transitions. [2022-01-19 00:40:48,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7021 transitions. [2022-01-19 00:40:48,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:48,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7021 transitions. [2022-01-19 00:40:48,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.5681818181818) internal successors, (7021), 44 states have internal predecessors, (7021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:48,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:48,170 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:48,170 INFO L186 Difference]: Start difference. First operand has 543 places, 362 transitions, 4329 flow. Second operand 44 states and 7021 transitions. [2022-01-19 00:40:48,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 553 places, 526 transitions, 8605 flow [2022-01-19 00:40:48,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 522 places, 526 transitions, 8035 flow, removed 239 selfloop flow, removed 31 redundant places. [2022-01-19 00:40:48,360 INFO L242 Difference]: Finished difference. Result has 558 places, 386 transitions, 5069 flow [2022-01-19 00:40:48,360 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4154, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=5069, PETRI_PLACES=558, PETRI_TRANSITIONS=386} [2022-01-19 00:40:48,361 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 371 predicate places. [2022-01-19 00:40:48,361 INFO L470 AbstractCegarLoop]: Abstraction has has 558 places, 386 transitions, 5069 flow [2022-01-19 00:40:48,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:48,361 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:48,361 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:48,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2022-01-19 00:40:48,361 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:48,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:48,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1765005700, now seen corresponding path program 139 times [2022-01-19 00:40:48,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:48,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454977662] [2022-01-19 00:40:48,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:48,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:48,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:48,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:48,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:48,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454977662] [2022-01-19 00:40:48,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454977662] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:48,477 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:48,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:48,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705191530] [2022-01-19 00:40:48,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:48,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:48,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:48,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:48,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:48,478 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:48,479 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 558 places, 386 transitions, 5069 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:48,479 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:48,479 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:48,479 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:49,704 INFO L129 PetriNetUnfolder]: 730/2548 cut-off events. [2022-01-19 00:40:49,704 INFO L130 PetriNetUnfolder]: For 54948/54961 co-relation queries the response was YES. [2022-01-19 00:40:49,746 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16887 conditions, 2548 events. 730/2548 cut-off events. For 54948/54961 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 18969 event pairs, 327 based on Foata normal form. 1/2462 useless extension candidates. Maximal degree in co-relation 16659. Up to 833 conditions per place. [2022-01-19 00:40:49,755 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 238 selfloop transitions, 98 changer transitions 72/549 dead transitions. [2022-01-19 00:40:49,755 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 572 places, 549 transitions, 9753 flow [2022-01-19 00:40:49,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 00:40:49,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 00:40:49,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7340 transitions. [2022-01-19 00:40:49,758 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7598343685300207 [2022-01-19 00:40:49,758 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7340 transitions. [2022-01-19 00:40:49,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7340 transitions. [2022-01-19 00:40:49,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:49,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7340 transitions. [2022-01-19 00:40:49,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.56521739130434) internal successors, (7340), 46 states have internal predecessors, (7340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:49,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:49,767 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:49,767 INFO L186 Difference]: Start difference. First operand has 558 places, 386 transitions, 5069 flow. Second operand 46 states and 7340 transitions. [2022-01-19 00:40:49,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 572 places, 549 transitions, 9753 flow [2022-01-19 00:40:50,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 541 places, 549 transitions, 8893 flow, removed 378 selfloop flow, removed 31 redundant places. [2022-01-19 00:40:50,011 INFO L242 Difference]: Finished difference. Result has 574 places, 405 transitions, 5573 flow [2022-01-19 00:40:50,012 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4810, PETRI_DIFFERENCE_MINUEND_PLACES=496, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=5573, PETRI_PLACES=574, PETRI_TRANSITIONS=405} [2022-01-19 00:40:50,012 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 387 predicate places. [2022-01-19 00:40:50,012 INFO L470 AbstractCegarLoop]: Abstraction has has 574 places, 405 transitions, 5573 flow [2022-01-19 00:40:50,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:50,012 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:50,012 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:50,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2022-01-19 00:40:50,012 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:50,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:50,013 INFO L85 PathProgramCache]: Analyzing trace with hash -408610136, now seen corresponding path program 140 times [2022-01-19 00:40:50,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:50,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156230008] [2022-01-19 00:40:50,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:50,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:50,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:50,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:50,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:50,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156230008] [2022-01-19 00:40:50,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156230008] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:50,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:50,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:50,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178458309] [2022-01-19 00:40:50,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:50,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:50,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:50,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:50,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:50,116 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:50,116 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 405 transitions, 5573 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:50,116 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:50,116 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:50,116 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:51,343 INFO L129 PetriNetUnfolder]: 724/2543 cut-off events. [2022-01-19 00:40:51,343 INFO L130 PetriNetUnfolder]: For 54348/54361 co-relation queries the response was YES. [2022-01-19 00:40:51,385 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16899 conditions, 2543 events. 724/2543 cut-off events. For 54348/54361 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 18994 event pairs, 335 based on Foata normal form. 1/2456 useless extension candidates. Maximal degree in co-relation 16667. Up to 831 conditions per place. [2022-01-19 00:40:51,393 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 246 selfloop transitions, 97 changer transitions 73/557 dead transitions. [2022-01-19 00:40:51,393 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 585 places, 557 transitions, 10015 flow [2022-01-19 00:40:51,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 00:40:51,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 00:40:51,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7186 transitions. [2022-01-19 00:40:51,396 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7604232804232804 [2022-01-19 00:40:51,396 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7186 transitions. [2022-01-19 00:40:51,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7186 transitions. [2022-01-19 00:40:51,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:51,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7186 transitions. [2022-01-19 00:40:51,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.6888888888889) internal successors, (7186), 45 states have internal predecessors, (7186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:51,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:51,405 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:51,405 INFO L186 Difference]: Start difference. First operand has 574 places, 405 transitions, 5573 flow. Second operand 45 states and 7186 transitions. [2022-01-19 00:40:51,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 585 places, 557 transitions, 10015 flow [2022-01-19 00:40:51,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 557 transitions, 9348 flow, removed 297 selfloop flow, removed 28 redundant places. [2022-01-19 00:40:51,667 INFO L242 Difference]: Finished difference. Result has 591 places, 413 transitions, 5899 flow [2022-01-19 00:40:51,667 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5375, PETRI_DIFFERENCE_MINUEND_PLACES=513, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=5899, PETRI_PLACES=591, PETRI_TRANSITIONS=413} [2022-01-19 00:40:51,667 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 404 predicate places. [2022-01-19 00:40:51,667 INFO L470 AbstractCegarLoop]: Abstraction has has 591 places, 413 transitions, 5899 flow [2022-01-19 00:40:51,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:51,667 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:51,668 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:51,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2022-01-19 00:40:51,668 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:51,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:51,668 INFO L85 PathProgramCache]: Analyzing trace with hash -2099298558, now seen corresponding path program 141 times [2022-01-19 00:40:51,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:51,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439386615] [2022-01-19 00:40:51,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:51,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:51,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:51,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:51,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:51,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439386615] [2022-01-19 00:40:51,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439386615] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:51,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:51,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:51,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379734442] [2022-01-19 00:40:51,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:51,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:51,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:51,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:51,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:51,777 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:51,778 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 413 transitions, 5899 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:51,778 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:51,778 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:51,778 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:53,078 INFO L129 PetriNetUnfolder]: 771/2644 cut-off events. [2022-01-19 00:40:53,078 INFO L130 PetriNetUnfolder]: For 58752/58765 co-relation queries the response was YES. [2022-01-19 00:40:53,125 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18320 conditions, 2644 events. 771/2644 cut-off events. For 58752/58765 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 19749 event pairs, 390 based on Foata normal form. 1/2552 useless extension candidates. Maximal degree in co-relation 18080. Up to 846 conditions per place. [2022-01-19 00:40:53,135 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 209 selfloop transitions, 136 changer transitions 71/557 dead transitions. [2022-01-19 00:40:53,135 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 601 places, 557 transitions, 10105 flow [2022-01-19 00:40:53,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-19 00:40:53,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-01-19 00:40:53,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6865 transitions. [2022-01-19 00:40:53,138 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7602436323366556 [2022-01-19 00:40:53,138 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6865 transitions. [2022-01-19 00:40:53,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6865 transitions. [2022-01-19 00:40:53,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:53,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6865 transitions. [2022-01-19 00:40:53,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 159.65116279069767) internal successors, (6865), 43 states have internal predecessors, (6865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:53,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:53,147 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:53,147 INFO L186 Difference]: Start difference. First operand has 591 places, 413 transitions, 5899 flow. Second operand 43 states and 6865 transitions. [2022-01-19 00:40:53,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 601 places, 557 transitions, 10105 flow [2022-01-19 00:40:53,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 571 places, 557 transitions, 9477 flow, removed 257 selfloop flow, removed 30 redundant places. [2022-01-19 00:40:53,456 INFO L242 Difference]: Finished difference. Result has 607 places, 435 transitions, 6626 flow [2022-01-19 00:40:53,457 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5652, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=6626, PETRI_PLACES=607, PETRI_TRANSITIONS=435} [2022-01-19 00:40:53,457 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 420 predicate places. [2022-01-19 00:40:53,457 INFO L470 AbstractCegarLoop]: Abstraction has has 607 places, 435 transitions, 6626 flow [2022-01-19 00:40:53,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:53,457 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:53,458 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:53,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2022-01-19 00:40:53,458 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:53,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:53,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1043525350, now seen corresponding path program 142 times [2022-01-19 00:40:53,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:53,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017301012] [2022-01-19 00:40:53,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:53,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:53,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:53,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:53,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017301012] [2022-01-19 00:40:53,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017301012] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:53,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:53,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:53,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455929953] [2022-01-19 00:40:53,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:53,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:53,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:53,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:53,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:53,567 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:53,568 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 607 places, 435 transitions, 6626 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:53,568 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:53,568 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:53,568 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:54,978 INFO L129 PetriNetUnfolder]: 800/2722 cut-off events. [2022-01-19 00:40:54,978 INFO L130 PetriNetUnfolder]: For 69906/69919 co-relation queries the response was YES. [2022-01-19 00:40:55,029 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19872 conditions, 2722 events. 800/2722 cut-off events. For 69906/69919 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 20567 event pairs, 392 based on Foata normal form. 1/2631 useless extension candidates. Maximal degree in co-relation 19624. Up to 855 conditions per place. [2022-01-19 00:40:55,040 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 259 selfloop transitions, 110 changer transitions 70/580 dead transitions. [2022-01-19 00:40:55,040 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 580 transitions, 11335 flow [2022-01-19 00:40:55,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 00:40:55,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 00:40:55,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7341 transitions. [2022-01-19 00:40:55,044 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7599378881987577 [2022-01-19 00:40:55,044 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7341 transitions. [2022-01-19 00:40:55,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7341 transitions. [2022-01-19 00:40:55,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:55,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7341 transitions. [2022-01-19 00:40:55,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.58695652173913) internal successors, (7341), 46 states have internal predecessors, (7341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:55,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:55,053 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:55,053 INFO L186 Difference]: Start difference. First operand has 607 places, 435 transitions, 6626 flow. Second operand 46 states and 7341 transitions. [2022-01-19 00:40:55,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 580 transitions, 11335 flow [2022-01-19 00:40:55,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 580 transitions, 10632 flow, removed 247 selfloop flow, removed 24 redundant places. [2022-01-19 00:40:55,427 INFO L242 Difference]: Finished difference. Result has 631 places, 454 transitions, 7128 flow [2022-01-19 00:40:55,428 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6317, PETRI_DIFFERENCE_MINUEND_PLACES=553, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=7128, PETRI_PLACES=631, PETRI_TRANSITIONS=454} [2022-01-19 00:40:55,428 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 444 predicate places. [2022-01-19 00:40:55,428 INFO L470 AbstractCegarLoop]: Abstraction has has 631 places, 454 transitions, 7128 flow [2022-01-19 00:40:55,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:55,428 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:55,428 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:55,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2022-01-19 00:40:55,428 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:55,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:55,429 INFO L85 PathProgramCache]: Analyzing trace with hash 837093764, now seen corresponding path program 143 times [2022-01-19 00:40:55,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:55,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172377229] [2022-01-19 00:40:55,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:55,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:55,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:55,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:55,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172377229] [2022-01-19 00:40:55,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172377229] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:55,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:55,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:55,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588447529] [2022-01-19 00:40:55,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:55,535 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:55,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:55,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:55,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:55,536 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:55,537 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 631 places, 454 transitions, 7128 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:55,537 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:55,537 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:55,537 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:56,973 INFO L129 PetriNetUnfolder]: 837/2810 cut-off events. [2022-01-19 00:40:56,973 INFO L130 PetriNetUnfolder]: For 84166/84179 co-relation queries the response was YES. [2022-01-19 00:40:57,022 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21550 conditions, 2810 events. 837/2810 cut-off events. For 84166/84179 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 21264 event pairs, 425 based on Foata normal form. 1/2718 useless extension candidates. Maximal degree in co-relation 21290. Up to 865 conditions per place. [2022-01-19 00:40:57,033 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 274 selfloop transitions, 117 changer transitions 71/603 dead transitions. [2022-01-19 00:40:57,033 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 641 places, 603 transitions, 12182 flow [2022-01-19 00:40:57,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 00:40:57,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 00:40:57,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7032 transitions. [2022-01-19 00:40:57,036 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7610389610389611 [2022-01-19 00:40:57,036 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7032 transitions. [2022-01-19 00:40:57,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7032 transitions. [2022-01-19 00:40:57,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:57,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7032 transitions. [2022-01-19 00:40:57,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.8181818181818) internal successors, (7032), 44 states have internal predecessors, (7032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:57,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:57,045 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:57,045 INFO L186 Difference]: Start difference. First operand has 631 places, 454 transitions, 7128 flow. Second operand 44 states and 7032 transitions. [2022-01-19 00:40:57,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 641 places, 603 transitions, 12182 flow [2022-01-19 00:40:57,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 603 transitions, 11483 flow, removed 300 selfloop flow, removed 30 redundant places. [2022-01-19 00:40:57,436 INFO L242 Difference]: Finished difference. Result has 647 places, 476 transitions, 7857 flow [2022-01-19 00:40:57,436 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6889, PETRI_DIFFERENCE_MINUEND_PLACES=568, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=7857, PETRI_PLACES=647, PETRI_TRANSITIONS=476} [2022-01-19 00:40:57,437 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 460 predicate places. [2022-01-19 00:40:57,437 INFO L470 AbstractCegarLoop]: Abstraction has has 647 places, 476 transitions, 7857 flow [2022-01-19 00:40:57,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:57,437 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:57,437 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:57,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2022-01-19 00:40:57,437 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:57,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:57,437 INFO L85 PathProgramCache]: Analyzing trace with hash -605808158, now seen corresponding path program 144 times [2022-01-19 00:40:57,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:57,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128420204] [2022-01-19 00:40:57,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:57,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:57,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:57,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:57,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128420204] [2022-01-19 00:40:57,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128420204] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:57,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:57,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:57,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334986711] [2022-01-19 00:40:57,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:57,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:57,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:57,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:57,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:57,582 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:57,583 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 647 places, 476 transitions, 7857 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:57,583 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:57,583 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:57,583 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:59,070 INFO L129 PetriNetUnfolder]: 831/2794 cut-off events. [2022-01-19 00:40:59,070 INFO L130 PetriNetUnfolder]: For 88970/88983 co-relation queries the response was YES. [2022-01-19 00:40:59,125 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21709 conditions, 2794 events. 831/2794 cut-off events. For 88970/88983 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 21158 event pairs, 399 based on Foata normal form. 1/2703 useless extension candidates. Maximal degree in co-relation 21441. Up to 863 conditions per place. [2022-01-19 00:40:59,135 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 278 selfloop transitions, 118 changer transitions 72/609 dead transitions. [2022-01-19 00:40:59,136 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 660 places, 609 transitions, 12719 flow [2022-01-19 00:40:59,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 00:40:59,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 00:40:59,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7187 transitions. [2022-01-19 00:40:59,139 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7605291005291005 [2022-01-19 00:40:59,139 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7187 transitions. [2022-01-19 00:40:59,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7187 transitions. [2022-01-19 00:40:59,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:59,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7187 transitions. [2022-01-19 00:40:59,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.7111111111111) internal successors, (7187), 45 states have internal predecessors, (7187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:59,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:59,147 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:59,147 INFO L186 Difference]: Start difference. First operand has 647 places, 476 transitions, 7857 flow. Second operand 45 states and 7187 transitions. [2022-01-19 00:40:59,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 660 places, 609 transitions, 12719 flow [2022-01-19 00:40:59,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 630 places, 609 transitions, 11903 flow, removed 343 selfloop flow, removed 30 redundant places. [2022-01-19 00:40:59,596 INFO L242 Difference]: Finished difference. Result has 663 places, 483 transitions, 8130 flow [2022-01-19 00:40:59,597 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7581, PETRI_DIFFERENCE_MINUEND_PLACES=586, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=8130, PETRI_PLACES=663, PETRI_TRANSITIONS=483} [2022-01-19 00:40:59,597 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 476 predicate places. [2022-01-19 00:40:59,597 INFO L470 AbstractCegarLoop]: Abstraction has has 663 places, 483 transitions, 8130 flow [2022-01-19 00:40:59,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:59,597 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:59,597 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:59,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2022-01-19 00:40:59,598 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:59,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:59,598 INFO L85 PathProgramCache]: Analyzing trace with hash -109358202, now seen corresponding path program 145 times [2022-01-19 00:40:59,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:59,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538452014] [2022-01-19 00:40:59,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:59,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:59,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:59,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:59,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538452014] [2022-01-19 00:40:59,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538452014] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:59,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:59,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:40:59,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54656227] [2022-01-19 00:40:59,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:59,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:40:59,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:59,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:40:59,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:40:59,703 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:40:59,703 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 663 places, 483 transitions, 8130 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:59,704 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:59,704 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:40:59,704 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:41:01,008 INFO L129 PetriNetUnfolder]: 820/2770 cut-off events. [2022-01-19 00:41:01,008 INFO L130 PetriNetUnfolder]: For 90131/90144 co-relation queries the response was YES. [2022-01-19 00:41:01,058 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21082 conditions, 2770 events. 820/2770 cut-off events. For 90131/90144 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 21016 event pairs, 302 based on Foata normal form. 1/2687 useless extension candidates. Maximal degree in co-relation 20808. Up to 861 conditions per place. [2022-01-19 00:41:01,068 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 264 selfloop transitions, 151 changer transitions 67/623 dead transitions. [2022-01-19 00:41:01,068 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 623 transitions, 11826 flow [2022-01-19 00:41:01,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:41:01,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:41:01,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6068 transitions. [2022-01-19 00:41:01,071 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7604010025062656 [2022-01-19 00:41:01,071 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6068 transitions. [2022-01-19 00:41:01,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6068 transitions. [2022-01-19 00:41:01,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:41:01,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6068 transitions. [2022-01-19 00:41:01,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.68421052631578) internal successors, (6068), 38 states have internal predecessors, (6068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:01,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:01,079 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:01,079 INFO L186 Difference]: Start difference. First operand has 663 places, 483 transitions, 8130 flow. Second operand 38 states and 6068 transitions. [2022-01-19 00:41:01,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 623 transitions, 11826 flow [2022-01-19 00:41:01,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 638 places, 623 transitions, 11227 flow, removed 226 selfloop flow, removed 30 redundant places. [2022-01-19 00:41:01,506 INFO L242 Difference]: Finished difference. Result has 660 places, 487 transitions, 8323 flow [2022-01-19 00:41:01,506 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7834, PETRI_DIFFERENCE_MINUEND_PLACES=601, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8323, PETRI_PLACES=660, PETRI_TRANSITIONS=487} [2022-01-19 00:41:01,506 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 473 predicate places. [2022-01-19 00:41:01,506 INFO L470 AbstractCegarLoop]: Abstraction has has 660 places, 487 transitions, 8323 flow [2022-01-19 00:41:01,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:01,507 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:41:01,507 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:41:01,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2022-01-19 00:41:01,507 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:41:01,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:41:01,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1444901534, now seen corresponding path program 146 times [2022-01-19 00:41:01,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:41:01,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626680983] [2022-01-19 00:41:01,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:41:01,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:41:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:41:01,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:41:01,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:41:01,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626680983] [2022-01-19 00:41:01,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626680983] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:41:01,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:41:01,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:41:01,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321024356] [2022-01-19 00:41:01,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:41:01,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:41:01,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:41:01,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:41:01,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:41:01,603 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:41:01,604 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 660 places, 487 transitions, 8323 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:01,604 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:41:01,604 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:41:01,604 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:41:02,896 INFO L129 PetriNetUnfolder]: 838/2831 cut-off events. [2022-01-19 00:41:02,896 INFO L130 PetriNetUnfolder]: For 96350/96363 co-relation queries the response was YES. [2022-01-19 00:41:02,950 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22062 conditions, 2831 events. 838/2831 cut-off events. For 96350/96363 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 21683 event pairs, 339 based on Foata normal form. 1/2744 useless extension candidates. Maximal degree in co-relation 21794. Up to 867 conditions per place. [2022-01-19 00:41:02,961 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 286 selfloop transitions, 141 changer transitions 66/634 dead transitions. [2022-01-19 00:41:02,961 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 672 places, 634 transitions, 12707 flow [2022-01-19 00:41:02,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 00:41:02,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 00:41:02,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5917 transitions. [2022-01-19 00:41:02,964 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7615186615186615 [2022-01-19 00:41:02,964 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5917 transitions. [2022-01-19 00:41:02,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5917 transitions. [2022-01-19 00:41:02,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:41:02,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5917 transitions. [2022-01-19 00:41:02,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 159.9189189189189) internal successors, (5917), 37 states have internal predecessors, (5917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:02,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:02,971 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:02,971 INFO L186 Difference]: Start difference. First operand has 660 places, 487 transitions, 8323 flow. Second operand 37 states and 5917 transitions. [2022-01-19 00:41:02,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 672 places, 634 transitions, 12707 flow [2022-01-19 00:41:03,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 647 places, 634 transitions, 12168 flow, removed 192 selfloop flow, removed 25 redundant places. [2022-01-19 00:41:03,433 INFO L242 Difference]: Finished difference. Result has 670 places, 508 transitions, 9164 flow [2022-01-19 00:41:03,434 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8078, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9164, PETRI_PLACES=670, PETRI_TRANSITIONS=508} [2022-01-19 00:41:03,434 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 483 predicate places. [2022-01-19 00:41:03,434 INFO L470 AbstractCegarLoop]: Abstraction has has 670 places, 508 transitions, 9164 flow [2022-01-19 00:41:03,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:03,434 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:41:03,434 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:41:03,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2022-01-19 00:41:03,435 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:41:03,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:41:03,435 INFO L85 PathProgramCache]: Analyzing trace with hash 125277454, now seen corresponding path program 147 times [2022-01-19 00:41:03,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:41:03,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890739923] [2022-01-19 00:41:03,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:41:03,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:41:03,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:41:03,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:41:03,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:41:03,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890739923] [2022-01-19 00:41:03,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890739923] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:41:03,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:41:03,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:41:03,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317164966] [2022-01-19 00:41:03,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:41:03,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:41:03,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:41:03,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:41:03,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:41:03,531 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:41:03,531 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 670 places, 508 transitions, 9164 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:03,532 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:41:03,532 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:41:03,532 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:41:04,942 INFO L129 PetriNetUnfolder]: 833/2828 cut-off events. [2022-01-19 00:41:04,943 INFO L130 PetriNetUnfolder]: For 98272/98285 co-relation queries the response was YES. [2022-01-19 00:41:04,986 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22333 conditions, 2828 events. 833/2828 cut-off events. For 98272/98285 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 21753 event pairs, 333 based on Foata normal form. 1/2740 useless extension candidates. Maximal degree in co-relation 22061. Up to 865 conditions per place. [2022-01-19 00:41:04,997 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 300 selfloop transitions, 138 changer transitions 65/644 dead transitions. [2022-01-19 00:41:04,997 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 684 places, 644 transitions, 13346 flow [2022-01-19 00:41:04,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:41:04,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:41:04,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6077 transitions. [2022-01-19 00:41:05,000 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7615288220551378 [2022-01-19 00:41:05,000 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6077 transitions. [2022-01-19 00:41:05,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6077 transitions. [2022-01-19 00:41:05,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:41:05,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6077 transitions. [2022-01-19 00:41:05,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.92105263157896) internal successors, (6077), 38 states have internal predecessors, (6077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:05,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:05,008 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:05,008 INFO L186 Difference]: Start difference. First operand has 670 places, 508 transitions, 9164 flow. Second operand 38 states and 6077 transitions. [2022-01-19 00:41:05,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 684 places, 644 transitions, 13346 flow [2022-01-19 00:41:05,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 664 places, 644 transitions, 12489 flow, removed 397 selfloop flow, removed 20 redundant places. [2022-01-19 00:41:05,547 INFO L242 Difference]: Finished difference. Result has 687 places, 516 transitions, 9316 flow [2022-01-19 00:41:05,548 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8761, PETRI_DIFFERENCE_MINUEND_PLACES=627, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9316, PETRI_PLACES=687, PETRI_TRANSITIONS=516} [2022-01-19 00:41:05,548 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 500 predicate places. [2022-01-19 00:41:05,548 INFO L470 AbstractCegarLoop]: Abstraction has has 687 places, 516 transitions, 9316 flow [2022-01-19 00:41:05,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:05,548 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:41:05,548 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:41:05,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2022-01-19 00:41:05,549 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:41:05,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:41:05,549 INFO L85 PathProgramCache]: Analyzing trace with hash 2123983226, now seen corresponding path program 148 times [2022-01-19 00:41:05,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:41:05,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706428135] [2022-01-19 00:41:05,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:41:05,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:41:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:41:05,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:41:05,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:41:05,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706428135] [2022-01-19 00:41:05,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706428135] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:41:05,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:41:05,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:41:05,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248249814] [2022-01-19 00:41:05,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:41:05,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:41:05,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:41:05,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:41:05,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:41:05,648 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:41:05,648 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 516 transitions, 9316 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:05,648 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:41:05,649 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:41:05,649 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:41:06,987 INFO L129 PetriNetUnfolder]: 828/2824 cut-off events. [2022-01-19 00:41:06,987 INFO L130 PetriNetUnfolder]: For 92967/92980 co-relation queries the response was YES. [2022-01-19 00:41:07,044 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21934 conditions, 2824 events. 828/2824 cut-off events. For 92967/92980 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 21784 event pairs, 330 based on Foata normal form. 1/2738 useless extension candidates. Maximal degree in co-relation 21658. Up to 863 conditions per place. [2022-01-19 00:41:07,055 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 302 selfloop transitions, 134 changer transitions 66/643 dead transitions. [2022-01-19 00:41:07,055 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 700 places, 643 transitions, 13040 flow [2022-01-19 00:41:07,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:41:07,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:41:07,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6076 transitions. [2022-01-19 00:41:07,058 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7614035087719299 [2022-01-19 00:41:07,058 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6076 transitions. [2022-01-19 00:41:07,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6076 transitions. [2022-01-19 00:41:07,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:41:07,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6076 transitions. [2022-01-19 00:41:07,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.89473684210526) internal successors, (6076), 38 states have internal predecessors, (6076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:07,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:07,065 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:07,065 INFO L186 Difference]: Start difference. First operand has 687 places, 516 transitions, 9316 flow. Second operand 38 states and 6076 transitions. [2022-01-19 00:41:07,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 700 places, 643 transitions, 13040 flow [2022-01-19 00:41:07,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 677 places, 643 transitions, 12533 flow, removed 169 selfloop flow, removed 23 redundant places. [2022-01-19 00:41:07,585 INFO L242 Difference]: Finished difference. Result has 699 places, 519 transitions, 9454 flow [2022-01-19 00:41:07,585 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9034, PETRI_DIFFERENCE_MINUEND_PLACES=640, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9454, PETRI_PLACES=699, PETRI_TRANSITIONS=519} [2022-01-19 00:41:07,586 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 512 predicate places. [2022-01-19 00:41:07,586 INFO L470 AbstractCegarLoop]: Abstraction has has 699 places, 519 transitions, 9454 flow [2022-01-19 00:41:07,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:07,586 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:41:07,586 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:41:07,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2022-01-19 00:41:07,586 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:41:07,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:41:07,587 INFO L85 PathProgramCache]: Analyzing trace with hash 974199346, now seen corresponding path program 149 times [2022-01-19 00:41:07,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:41:07,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877903212] [2022-01-19 00:41:07,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:41:07,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:41:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:41:07,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:41:07,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:41:07,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877903212] [2022-01-19 00:41:07,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877903212] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:41:07,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:41:07,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:41:07,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90777490] [2022-01-19 00:41:07,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:41:07,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:41:07,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:41:07,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:41:07,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:41:07,701 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:41:07,701 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 699 places, 519 transitions, 9454 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:07,701 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:41:07,701 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:41:07,701 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:41:09,148 INFO L129 PetriNetUnfolder]: 859/2890 cut-off events. [2022-01-19 00:41:09,149 INFO L130 PetriNetUnfolder]: For 96266/96279 co-relation queries the response was YES. [2022-01-19 00:41:09,196 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23061 conditions, 2890 events. 859/2890 cut-off events. For 96266/96279 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 22205 event pairs, 390 based on Foata normal form. 1/2797 useless extension candidates. Maximal degree in co-relation 22782. Up to 869 conditions per place. [2022-01-19 00:41:09,207 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 284 selfloop transitions, 171 changer transitions 66/662 dead transitions. [2022-01-19 00:41:09,207 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 710 places, 662 transitions, 14094 flow [2022-01-19 00:41:09,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 00:41:09,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 00:41:09,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5761 transitions. [2022-01-19 00:41:09,210 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7620370370370371 [2022-01-19 00:41:09,210 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5761 transitions. [2022-01-19 00:41:09,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5761 transitions. [2022-01-19 00:41:09,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:41:09,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5761 transitions. [2022-01-19 00:41:09,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.02777777777777) internal successors, (5761), 36 states have internal predecessors, (5761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:09,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:09,218 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:09,218 INFO L186 Difference]: Start difference. First operand has 699 places, 519 transitions, 9454 flow. Second operand 36 states and 5761 transitions. [2022-01-19 00:41:09,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 710 places, 662 transitions, 14094 flow [2022-01-19 00:41:09,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 685 places, 662 transitions, 13640 flow, removed 156 selfloop flow, removed 25 redundant places. [2022-01-19 00:41:09,758 INFO L242 Difference]: Finished difference. Result has 711 places, 542 transitions, 10482 flow [2022-01-19 00:41:09,758 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9229, PETRI_DIFFERENCE_MINUEND_PLACES=650, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=10482, PETRI_PLACES=711, PETRI_TRANSITIONS=542} [2022-01-19 00:41:09,758 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 524 predicate places. [2022-01-19 00:41:09,758 INFO L470 AbstractCegarLoop]: Abstraction has has 711 places, 542 transitions, 10482 flow [2022-01-19 00:41:09,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:09,759 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:41:09,759 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:41:09,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2022-01-19 00:41:09,759 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:41:09,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:41:09,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1980016676, now seen corresponding path program 150 times [2022-01-19 00:41:09,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:41:09,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028583655] [2022-01-19 00:41:09,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:41:09,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:41:09,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:41:09,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:41:09,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:41:09,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028583655] [2022-01-19 00:41:09,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028583655] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:41:09,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:41:09,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:41:09,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16811097] [2022-01-19 00:41:09,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:41:09,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:41:09,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:41:09,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:41:09,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:41:09,874 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:41:09,874 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 711 places, 542 transitions, 10482 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:09,874 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:41:09,874 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:41:09,875 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:41:11,327 INFO L129 PetriNetUnfolder]: 851/2884 cut-off events. [2022-01-19 00:41:11,327 INFO L130 PetriNetUnfolder]: For 102839/102852 co-relation queries the response was YES. [2022-01-19 00:41:11,387 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23495 conditions, 2884 events. 851/2884 cut-off events. For 102839/102852 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 22231 event pairs, 369 based on Foata normal form. 1/2794 useless extension candidates. Maximal degree in co-relation 23209. Up to 867 conditions per place. [2022-01-19 00:41:11,399 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 327 selfloop transitions, 136 changer transitions 64/668 dead transitions. [2022-01-19 00:41:11,399 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 726 places, 668 transitions, 14830 flow [2022-01-19 00:41:11,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:41:11,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:41:11,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6080 transitions. [2022-01-19 00:41:11,402 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2022-01-19 00:41:11,402 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6080 transitions. [2022-01-19 00:41:11,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6080 transitions. [2022-01-19 00:41:11,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:41:11,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6080 transitions. [2022-01-19 00:41:11,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.0) internal successors, (6080), 38 states have internal predecessors, (6080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:11,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:11,409 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:11,409 INFO L186 Difference]: Start difference. First operand has 711 places, 542 transitions, 10482 flow. Second operand 38 states and 6080 transitions. [2022-01-19 00:41:11,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 726 places, 668 transitions, 14830 flow [2022-01-19 00:41:11,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 706 places, 668 transitions, 14123 flow, removed 276 selfloop flow, removed 20 redundant places. [2022-01-19 00:41:12,005 INFO L242 Difference]: Finished difference. Result has 729 places, 551 transitions, 10739 flow [2022-01-19 00:41:12,005 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10136, PETRI_DIFFERENCE_MINUEND_PLACES=669, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=10739, PETRI_PLACES=729, PETRI_TRANSITIONS=551} [2022-01-19 00:41:12,005 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 542 predicate places. [2022-01-19 00:41:12,005 INFO L470 AbstractCegarLoop]: Abstraction has has 729 places, 551 transitions, 10739 flow [2022-01-19 00:41:12,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:12,006 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:41:12,006 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:41:12,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2022-01-19 00:41:12,006 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:41:12,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:41:12,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1143510414, now seen corresponding path program 151 times [2022-01-19 00:41:12,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:41:12,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632782719] [2022-01-19 00:41:12,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:41:12,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:41:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:41:12,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:41:12,119 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:41:12,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632782719] [2022-01-19 00:41:12,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632782719] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:41:12,120 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:41:12,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:41:12,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106404639] [2022-01-19 00:41:12,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:41:12,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:41:12,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:41:12,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:41:12,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:41:12,121 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:41:12,122 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 729 places, 551 transitions, 10739 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:12,122 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:41:12,122 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:41:12,122 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:41:13,634 INFO L129 PetriNetUnfolder]: 874/2944 cut-off events. [2022-01-19 00:41:13,634 INFO L130 PetriNetUnfolder]: For 110483/110496 co-relation queries the response was YES. [2022-01-19 00:41:13,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24495 conditions, 2944 events. 874/2944 cut-off events. For 110483/110496 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 22806 event pairs, 385 based on Foata normal form. 1/2851 useless extension candidates. Maximal degree in co-relation 24203. Up to 873 conditions per place. [2022-01-19 00:41:13,697 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 338 selfloop transitions, 144 changer transitions 64/687 dead transitions. [2022-01-19 00:41:13,697 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 741 places, 687 transitions, 15474 flow [2022-01-19 00:41:13,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 00:41:13,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 00:41:13,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5926 transitions. [2022-01-19 00:41:13,700 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7626769626769627 [2022-01-19 00:41:13,700 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5926 transitions. [2022-01-19 00:41:13,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5926 transitions. [2022-01-19 00:41:13,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:41:13,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5926 transitions. [2022-01-19 00:41:13,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.16216216216216) internal successors, (5926), 37 states have internal predecessors, (5926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:13,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:13,707 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:13,707 INFO L186 Difference]: Start difference. First operand has 729 places, 551 transitions, 10739 flow. Second operand 37 states and 5926 transitions. [2022-01-19 00:41:13,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 741 places, 687 transitions, 15474 flow [2022-01-19 00:41:14,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 720 places, 687 transitions, 14883 flow, removed 229 selfloop flow, removed 21 redundant places. [2022-01-19 00:41:14,362 INFO L242 Difference]: Finished difference. Result has 745 places, 570 transitions, 11430 flow [2022-01-19 00:41:14,363 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10456, PETRI_DIFFERENCE_MINUEND_PLACES=684, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=11430, PETRI_PLACES=745, PETRI_TRANSITIONS=570} [2022-01-19 00:41:14,363 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 558 predicate places. [2022-01-19 00:41:14,363 INFO L470 AbstractCegarLoop]: Abstraction has has 745 places, 570 transitions, 11430 flow [2022-01-19 00:41:14,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:14,363 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:41:14,363 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:41:14,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2022-01-19 00:41:14,363 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:41:14,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:41:14,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1315170484, now seen corresponding path program 152 times [2022-01-19 00:41:14,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:41:14,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025181371] [2022-01-19 00:41:14,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:41:14,364 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:41:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:41:14,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:41:14,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:41:14,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025181371] [2022-01-19 00:41:14,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025181371] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:41:14,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:41:14,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:41:14,463 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502708833] [2022-01-19 00:41:14,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:41:14,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:41:14,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:41:14,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:41:14,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:41:14,464 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:41:14,465 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 745 places, 570 transitions, 11430 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:14,465 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:41:14,465 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:41:14,465 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:41:15,965 INFO L129 PetriNetUnfolder]: 897/3010 cut-off events. [2022-01-19 00:41:15,966 INFO L130 PetriNetUnfolder]: For 120801/120814 co-relation queries the response was YES. [2022-01-19 00:41:16,030 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25722 conditions, 3010 events. 897/3010 cut-off events. For 120801/120814 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 23381 event pairs, 404 based on Foata normal form. 1/2916 useless extension candidates. Maximal degree in co-relation 25423. Up to 879 conditions per place. [2022-01-19 00:41:16,042 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 336 selfloop transitions, 162 changer transitions 64/703 dead transitions. [2022-01-19 00:41:16,042 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 758 places, 703 transitions, 16223 flow [2022-01-19 00:41:16,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 00:41:16,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 00:41:16,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5924 transitions. [2022-01-19 00:41:16,045 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7624195624195624 [2022-01-19 00:41:16,045 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5924 transitions. [2022-01-19 00:41:16,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5924 transitions. [2022-01-19 00:41:16,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:41:16,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5924 transitions. [2022-01-19 00:41:16,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.1081081081081) internal successors, (5924), 37 states have internal predecessors, (5924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:16,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:16,052 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:16,052 INFO L186 Difference]: Start difference. First operand has 745 places, 570 transitions, 11430 flow. Second operand 37 states and 5924 transitions. [2022-01-19 00:41:16,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 758 places, 703 transitions, 16223 flow [2022-01-19 00:41:16,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 737 places, 703 transitions, 15704 flow, removed 192 selfloop flow, removed 21 redundant places. [2022-01-19 00:41:16,771 INFO L242 Difference]: Finished difference. Result has 762 places, 587 transitions, 12150 flow [2022-01-19 00:41:16,772 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11162, PETRI_DIFFERENCE_MINUEND_PLACES=701, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=570, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=12150, PETRI_PLACES=762, PETRI_TRANSITIONS=587} [2022-01-19 00:41:16,772 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 575 predicate places. [2022-01-19 00:41:16,772 INFO L470 AbstractCegarLoop]: Abstraction has has 762 places, 587 transitions, 12150 flow [2022-01-19 00:41:16,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:16,772 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:41:16,772 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:41:16,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2022-01-19 00:41:16,773 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:41:16,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:41:16,773 INFO L85 PathProgramCache]: Analyzing trace with hash 404415070, now seen corresponding path program 153 times [2022-01-19 00:41:16,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:41:16,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334344352] [2022-01-19 00:41:16,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:41:16,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:41:16,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:41:16,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:41:16,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:41:16,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334344352] [2022-01-19 00:41:16,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334344352] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:41:16,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:41:16,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:41:16,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713906599] [2022-01-19 00:41:16,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:41:16,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:41:16,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:41:16,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:41:16,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:41:16,871 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:41:16,872 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 762 places, 587 transitions, 12150 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:16,872 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:41:16,872 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:41:16,872 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:41:18,419 INFO L129 PetriNetUnfolder]: 892/3014 cut-off events. [2022-01-19 00:41:18,419 INFO L130 PetriNetUnfolder]: For 123816/123829 co-relation queries the response was YES. [2022-01-19 00:41:18,479 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26051 conditions, 3014 events. 892/3014 cut-off events. For 123816/123829 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 23590 event pairs, 397 based on Foata normal form. 1/2920 useless extension candidates. Maximal degree in co-relation 25745. Up to 877 conditions per place. [2022-01-19 00:41:18,491 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 339 selfloop transitions, 164 changer transitions 64/708 dead transitions. [2022-01-19 00:41:18,491 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 776 places, 708 transitions, 16683 flow [2022-01-19 00:41:18,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:41:18,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:41:18,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6078 transitions. [2022-01-19 00:41:18,494 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616541353383459 [2022-01-19 00:41:18,494 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6078 transitions. [2022-01-19 00:41:18,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6078 transitions. [2022-01-19 00:41:18,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:41:18,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6078 transitions. [2022-01-19 00:41:18,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.94736842105263) internal successors, (6078), 38 states have internal predecessors, (6078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:18,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:18,501 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:18,501 INFO L186 Difference]: Start difference. First operand has 762 places, 587 transitions, 12150 flow. Second operand 38 states and 6078 transitions. [2022-01-19 00:41:18,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 776 places, 708 transitions, 16683 flow [2022-01-19 00:41:19,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 756 places, 708 transitions, 16097 flow, removed 213 selfloop flow, removed 20 redundant places. [2022-01-19 00:41:19,300 INFO L242 Difference]: Finished difference. Result has 780 places, 593 transitions, 12424 flow [2022-01-19 00:41:19,301 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11845, PETRI_DIFFERENCE_MINUEND_PLACES=719, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=12424, PETRI_PLACES=780, PETRI_TRANSITIONS=593} [2022-01-19 00:41:19,301 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 593 predicate places. [2022-01-19 00:41:19,301 INFO L470 AbstractCegarLoop]: Abstraction has has 780 places, 593 transitions, 12424 flow [2022-01-19 00:41:19,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:19,301 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:41:19,301 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:41:19,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2022-01-19 00:41:19,301 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:41:19,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:41:19,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1411516600, now seen corresponding path program 154 times [2022-01-19 00:41:19,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:41:19,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287942845] [2022-01-19 00:41:19,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:41:19,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:41:19,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:41:19,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:41:19,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:41:19,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287942845] [2022-01-19 00:41:19,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287942845] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:41:19,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:41:19,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:41:19,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033024483] [2022-01-19 00:41:19,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:41:19,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:41:19,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:41:19,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:41:19,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:41:19,413 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:41:19,413 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 780 places, 593 transitions, 12424 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:19,413 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:41:19,413 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:41:19,414 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:41:20,965 INFO L129 PetriNetUnfolder]: 882/2996 cut-off events. [2022-01-19 00:41:20,965 INFO L130 PetriNetUnfolder]: For 133663/133676 co-relation queries the response was YES. [2022-01-19 00:41:21,033 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25883 conditions, 2996 events. 882/2996 cut-off events. For 133663/133676 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 23509 event pairs, 392 based on Foata normal form. 1/2902 useless extension candidates. Maximal degree in co-relation 25570. Up to 875 conditions per place. [2022-01-19 00:41:21,047 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 368 selfloop transitions, 145 changer transitions 64/718 dead transitions. [2022-01-19 00:41:21,047 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 793 places, 718 transitions, 17179 flow [2022-01-19 00:41:21,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:41:21,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:41:21,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6086 transitions. [2022-01-19 00:41:21,050 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.76265664160401 [2022-01-19 00:41:21,050 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6086 transitions. [2022-01-19 00:41:21,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6086 transitions. [2022-01-19 00:41:21,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:41:21,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6086 transitions. [2022-01-19 00:41:21,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.1578947368421) internal successors, (6086), 38 states have internal predecessors, (6086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:21,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:21,058 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:21,058 INFO L186 Difference]: Start difference. First operand has 780 places, 593 transitions, 12424 flow. Second operand 38 states and 6086 transitions. [2022-01-19 00:41:21,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 793 places, 718 transitions, 17179 flow [2022-01-19 00:41:21,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 771 places, 718 transitions, 16576 flow, removed 210 selfloop flow, removed 22 redundant places. [2022-01-19 00:41:21,878 INFO L242 Difference]: Finished difference. Result has 795 places, 599 transitions, 12632 flow [2022-01-19 00:41:21,879 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12088, PETRI_DIFFERENCE_MINUEND_PLACES=734, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=12632, PETRI_PLACES=795, PETRI_TRANSITIONS=599} [2022-01-19 00:41:21,879 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 608 predicate places. [2022-01-19 00:41:21,879 INFO L470 AbstractCegarLoop]: Abstraction has has 795 places, 599 transitions, 12632 flow [2022-01-19 00:41:21,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:21,879 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:41:21,879 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:41:21,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2022-01-19 00:41:21,879 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:41:21,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:41:21,880 INFO L85 PathProgramCache]: Analyzing trace with hash 856655376, now seen corresponding path program 155 times [2022-01-19 00:41:21,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:41:21,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295709746] [2022-01-19 00:41:21,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:41:21,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:41:21,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:41:21,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:41:21,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:41:21,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295709746] [2022-01-19 00:41:21,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295709746] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:41:21,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:41:21,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:41:21,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943852141] [2022-01-19 00:41:21,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:41:21,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:41:21,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:41:21,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:41:21,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:41:21,987 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:41:21,988 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 795 places, 599 transitions, 12632 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:21,988 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:41:21,988 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:41:21,988 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:41:23,575 INFO L129 PetriNetUnfolder]: 906/3055 cut-off events. [2022-01-19 00:41:23,575 INFO L130 PetriNetUnfolder]: For 138103/138116 co-relation queries the response was YES. [2022-01-19 00:41:23,645 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27063 conditions, 3055 events. 906/3055 cut-off events. For 138103/138116 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 24001 event pairs, 408 based on Foata normal form. 1/2957 useless extension candidates. Maximal degree in co-relation 26745. Up to 889 conditions per place. [2022-01-19 00:41:23,659 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 382 selfloop transitions, 135 changer transitions 63/721 dead transitions. [2022-01-19 00:41:23,659 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 807 places, 721 transitions, 17603 flow [2022-01-19 00:41:23,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 00:41:23,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 00:41:23,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5927 transitions. [2022-01-19 00:41:23,662 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628056628056628 [2022-01-19 00:41:23,662 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5927 transitions. [2022-01-19 00:41:23,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5927 transitions. [2022-01-19 00:41:23,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:41:23,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5927 transitions. [2022-01-19 00:41:23,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.1891891891892) internal successors, (5927), 37 states have internal predecessors, (5927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:23,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:23,670 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:23,670 INFO L186 Difference]: Start difference. First operand has 795 places, 599 transitions, 12632 flow. Second operand 37 states and 5927 transitions. [2022-01-19 00:41:23,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 807 places, 721 transitions, 17603 flow [2022-01-19 00:41:24,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 783 places, 721 transitions, 17023 flow, removed 212 selfloop flow, removed 24 redundant places. [2022-01-19 00:41:24,629 INFO L242 Difference]: Finished difference. Result has 808 places, 618 transitions, 13321 flow [2022-01-19 00:41:24,629 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12315, PETRI_DIFFERENCE_MINUEND_PLACES=747, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=599, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=13321, PETRI_PLACES=808, PETRI_TRANSITIONS=618} [2022-01-19 00:41:24,629 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 621 predicate places. [2022-01-19 00:41:24,629 INFO L470 AbstractCegarLoop]: Abstraction has has 808 places, 618 transitions, 13321 flow [2022-01-19 00:41:24,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:24,630 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:41:24,630 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:41:24,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2022-01-19 00:41:24,630 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:41:24,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:41:24,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1068205640, now seen corresponding path program 156 times [2022-01-19 00:41:24,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:41:24,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859595024] [2022-01-19 00:41:24,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:41:24,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:41:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:41:24,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:41:24,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:41:24,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859595024] [2022-01-19 00:41:24,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859595024] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:41:24,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:41:24,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:41:24,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769748688] [2022-01-19 00:41:24,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:41:24,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:41:24,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:41:24,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:41:24,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:41:24,729 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:41:24,729 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 808 places, 618 transitions, 13321 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:24,729 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:41:24,729 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:41:24,729 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:41:26,317 INFO L129 PetriNetUnfolder]: 939/3141 cut-off events. [2022-01-19 00:41:26,317 INFO L130 PetriNetUnfolder]: For 144552/144565 co-relation queries the response was YES. [2022-01-19 00:41:26,391 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28621 conditions, 3141 events. 939/3141 cut-off events. For 144552/144565 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 24791 event pairs, 443 based on Foata normal form. 1/3041 useless extension candidates. Maximal degree in co-relation 28299. Up to 900 conditions per place. [2022-01-19 00:41:26,405 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 285 selfloop transitions, 255 changer transitions 65/746 dead transitions. [2022-01-19 00:41:26,405 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 819 places, 746 transitions, 18554 flow [2022-01-19 00:41:26,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 00:41:26,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 00:41:26,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5605 transitions. [2022-01-19 00:41:26,408 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625850340136054 [2022-01-19 00:41:26,408 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5605 transitions. [2022-01-19 00:41:26,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5605 transitions. [2022-01-19 00:41:26,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:41:26,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5605 transitions. [2022-01-19 00:41:26,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.14285714285714) internal successors, (5605), 35 states have internal predecessors, (5605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:26,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:26,415 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:26,415 INFO L186 Difference]: Start difference. First operand has 808 places, 618 transitions, 13321 flow. Second operand 35 states and 5605 transitions. [2022-01-19 00:41:26,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 819 places, 746 transitions, 18554 flow [2022-01-19 00:41:27,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 798 places, 746 transitions, 17950 flow, removed 226 selfloop flow, removed 21 redundant places. [2022-01-19 00:41:27,544 INFO L242 Difference]: Finished difference. Result has 824 places, 637 transitions, 14324 flow [2022-01-19 00:41:27,544 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12977, PETRI_DIFFERENCE_MINUEND_PLACES=764, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=236, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=14324, PETRI_PLACES=824, PETRI_TRANSITIONS=637} [2022-01-19 00:41:27,544 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 637 predicate places. [2022-01-19 00:41:27,544 INFO L470 AbstractCegarLoop]: Abstraction has has 824 places, 637 transitions, 14324 flow [2022-01-19 00:41:27,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:27,545 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:41:27,545 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:41:27,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2022-01-19 00:41:27,545 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:41:27,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:41:27,545 INFO L85 PathProgramCache]: Analyzing trace with hash -116814954, now seen corresponding path program 157 times [2022-01-19 00:41:27,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:41:27,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5223778] [2022-01-19 00:41:27,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:41:27,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:41:27,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:41:27,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:41:27,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:41:27,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5223778] [2022-01-19 00:41:27,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5223778] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:41:27,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:41:27,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:41:27,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685279019] [2022-01-19 00:41:27,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:41:27,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:41:27,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:41:27,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:41:27,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:41:27,659 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:41:27,660 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 824 places, 637 transitions, 14324 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:27,660 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:41:27,660 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:41:27,660 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:41:29,360 INFO L129 PetriNetUnfolder]: 958/3200 cut-off events. [2022-01-19 00:41:29,360 INFO L130 PetriNetUnfolder]: For 161054/161067 co-relation queries the response was YES. [2022-01-19 00:41:29,436 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29887 conditions, 3200 events. 958/3200 cut-off events. For 161054/161067 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 25398 event pairs, 447 based on Foata normal form. 1/3102 useless extension candidates. Maximal degree in co-relation 29557. Up to 905 conditions per place. [2022-01-19 00:41:29,451 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 359 selfloop transitions, 193 changer transitions 61/754 dead transitions. [2022-01-19 00:41:29,451 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 840 places, 754 transitions, 19439 flow [2022-01-19 00:41:29,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:41:29,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:41:29,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6079 transitions. [2022-01-19 00:41:29,454 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617794486215539 [2022-01-19 00:41:29,454 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6079 transitions. [2022-01-19 00:41:29,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6079 transitions. [2022-01-19 00:41:29,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:41:29,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6079 transitions. [2022-01-19 00:41:29,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.97368421052633) internal successors, (6079), 38 states have internal predecessors, (6079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:29,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:29,461 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:29,461 INFO L186 Difference]: Start difference. First operand has 824 places, 637 transitions, 14324 flow. Second operand 38 states and 6079 transitions. [2022-01-19 00:41:29,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 840 places, 754 transitions, 19439 flow [2022-01-19 00:41:30,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 818 places, 754 transitions, 18600 flow, removed 197 selfloop flow, removed 22 redundant places. [2022-01-19 00:41:30,569 INFO L242 Difference]: Finished difference. Result has 843 places, 652 transitions, 14774 flow [2022-01-19 00:41:30,570 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13760, PETRI_DIFFERENCE_MINUEND_PLACES=781, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=14774, PETRI_PLACES=843, PETRI_TRANSITIONS=652} [2022-01-19 00:41:30,570 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 656 predicate places. [2022-01-19 00:41:30,570 INFO L470 AbstractCegarLoop]: Abstraction has has 843 places, 652 transitions, 14774 flow [2022-01-19 00:41:30,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:30,570 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:41:30,571 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:41:30,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2022-01-19 00:41:30,571 INFO L402 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:41:30,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:41:30,571 INFO L85 PathProgramCache]: Analyzing trace with hash 83784014, now seen corresponding path program 158 times [2022-01-19 00:41:30,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:41:30,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717982916] [2022-01-19 00:41:30,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:41:30,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:41:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:41:30,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:41:30,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:41:30,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717982916] [2022-01-19 00:41:30,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717982916] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:41:30,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:41:30,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:41:30,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015508786] [2022-01-19 00:41:30,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:41:30,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:41:30,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:41:30,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:41:30,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:41:30,675 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:41:30,676 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 843 places, 652 transitions, 14774 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:30,676 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:41:30,676 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:41:30,676 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:41:32,380 INFO L129 PetriNetUnfolder]: 949/3187 cut-off events. [2022-01-19 00:41:32,381 INFO L130 PetriNetUnfolder]: For 173081/173094 co-relation queries the response was YES. [2022-01-19 00:41:32,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29703 conditions, 3187 events. 949/3187 cut-off events. For 173081/173094 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 25338 event pairs, 410 based on Foata normal form. 1/3089 useless extension candidates. Maximal degree in co-relation 29365. Up to 899 conditions per place. [2022-01-19 00:41:32,465 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 412 selfloop transitions, 149 changer transitions 62/764 dead transitions. [2022-01-19 00:41:32,465 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 856 places, 764 transitions, 19831 flow [2022-01-19 00:41:32,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:41:32,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:41:32,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6087 transitions. [2022-01-19 00:41:32,468 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.762781954887218 [2022-01-19 00:41:32,468 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6087 transitions. [2022-01-19 00:41:32,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6087 transitions. [2022-01-19 00:41:32,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:41:32,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6087 transitions. [2022-01-19 00:41:32,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.18421052631578) internal successors, (6087), 38 states have internal predecessors, (6087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:32,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:32,475 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:32,475 INFO L186 Difference]: Start difference. First operand has 843 places, 652 transitions, 14774 flow. Second operand 38 states and 6087 transitions. [2022-01-19 00:41:32,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 856 places, 764 transitions, 19831 flow [2022-01-19 00:41:33,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 835 places, 764 transitions, 19193 flow, removed 208 selfloop flow, removed 21 redundant places. [2022-01-19 00:41:33,679 INFO L242 Difference]: Finished difference. Result has 858 places, 660 transitions, 15019 flow [2022-01-19 00:41:33,680 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14382, PETRI_DIFFERENCE_MINUEND_PLACES=798, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=15019, PETRI_PLACES=858, PETRI_TRANSITIONS=660} [2022-01-19 00:41:33,680 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 671 predicate places. [2022-01-19 00:41:33,680 INFO L470 AbstractCegarLoop]: Abstraction has has 858 places, 660 transitions, 15019 flow [2022-01-19 00:41:33,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:33,680 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:41:33,680 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:41:33,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2022-01-19 00:41:33,680 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:41:33,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:41:33,681 INFO L85 PathProgramCache]: Analyzing trace with hash 948920408, now seen corresponding path program 159 times [2022-01-19 00:41:33,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:41:33,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983959759] [2022-01-19 00:41:33,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:41:33,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:41:33,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:41:33,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:41:33,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:41:33,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983959759] [2022-01-19 00:41:33,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983959759] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:41:33,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:41:33,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:41:33,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134868853] [2022-01-19 00:41:33,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:41:33,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:41:33,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:41:33,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:41:33,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:41:33,781 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:41:33,782 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 858 places, 660 transitions, 15019 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:33,782 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:41:33,782 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:41:33,782 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:41:35,507 INFO L129 PetriNetUnfolder]: 980/3268 cut-off events. [2022-01-19 00:41:35,507 INFO L130 PetriNetUnfolder]: For 182050/182063 co-relation queries the response was YES. [2022-01-19 00:41:35,589 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31303 conditions, 3268 events. 980/3268 cut-off events. For 182050/182063 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 26151 event pairs, 456 based on Foata normal form. 1/3166 useless extension candidates. Maximal degree in co-relation 30960. Up to 909 conditions per place. [2022-01-19 00:41:35,603 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 380 selfloop transitions, 198 changer transitions 62/781 dead transitions. [2022-01-19 00:41:35,603 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 869 places, 781 transitions, 20551 flow [2022-01-19 00:41:35,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 00:41:35,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 00:41:35,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5770 transitions. [2022-01-19 00:41:35,606 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7632275132275133 [2022-01-19 00:41:35,606 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5770 transitions. [2022-01-19 00:41:35,606 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5770 transitions. [2022-01-19 00:41:35,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:41:35,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5770 transitions. [2022-01-19 00:41:35,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.27777777777777) internal successors, (5770), 36 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:35,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:35,613 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:35,613 INFO L186 Difference]: Start difference. First operand has 858 places, 660 transitions, 15019 flow. Second operand 36 states and 5770 transitions. [2022-01-19 00:41:35,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 869 places, 781 transitions, 20551 flow [2022-01-19 00:41:36,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 848 places, 781 transitions, 19997 flow, removed 194 selfloop flow, removed 21 redundant places. [2022-01-19 00:41:37,005 INFO L242 Difference]: Finished difference. Result has 874 places, 681 transitions, 16024 flow [2022-01-19 00:41:37,006 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14702, PETRI_DIFFERENCE_MINUEND_PLACES=813, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=660, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=16024, PETRI_PLACES=874, PETRI_TRANSITIONS=681} [2022-01-19 00:41:37,006 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 687 predicate places. [2022-01-19 00:41:37,006 INFO L470 AbstractCegarLoop]: Abstraction has has 874 places, 681 transitions, 16024 flow [2022-01-19 00:41:37,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:37,006 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:41:37,006 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:41:37,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2022-01-19 00:41:37,006 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:41:37,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:41:37,007 INFO L85 PathProgramCache]: Analyzing trace with hash -2086298424, now seen corresponding path program 160 times [2022-01-19 00:41:37,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:41:37,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357144296] [2022-01-19 00:41:37,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:41:37,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:41:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:41:37,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:41:37,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:41:37,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357144296] [2022-01-19 00:41:37,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357144296] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:41:37,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:41:37,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:41:37,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462210005] [2022-01-19 00:41:37,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:41:37,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:41:37,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:41:37,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:41:37,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:41:37,108 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:41:37,109 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 874 places, 681 transitions, 16024 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:37,109 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:41:37,109 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:41:37,109 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:41:38,887 INFO L129 PetriNetUnfolder]: 1005/3333 cut-off events. [2022-01-19 00:41:38,887 INFO L130 PetriNetUnfolder]: For 212971/212984 co-relation queries the response was YES. [2022-01-19 00:41:38,971 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32640 conditions, 3333 events. 1005/3333 cut-off events. For 212971/212984 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 26796 event pairs, 461 based on Foata normal form. 1/3232 useless extension candidates. Maximal degree in co-relation 32289. Up to 911 conditions per place. [2022-01-19 00:41:38,986 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 431 selfloop transitions, 168 changer transitions 63/803 dead transitions. [2022-01-19 00:41:38,986 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 887 places, 803 transitions, 21665 flow [2022-01-19 00:41:38,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 00:41:38,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 00:41:38,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5772 transitions. [2022-01-19 00:41:38,989 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7634920634920634 [2022-01-19 00:41:38,989 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5772 transitions. [2022-01-19 00:41:38,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5772 transitions. [2022-01-19 00:41:38,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:41:38,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5772 transitions. [2022-01-19 00:41:38,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.33333333333334) internal successors, (5772), 36 states have internal predecessors, (5772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:38,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:38,996 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:38,996 INFO L186 Difference]: Start difference. First operand has 874 places, 681 transitions, 16024 flow. Second operand 36 states and 5772 transitions. [2022-01-19 00:41:38,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 887 places, 803 transitions, 21665 flow [2022-01-19 00:41:40,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 866 places, 803 transitions, 20978 flow, removed 225 selfloop flow, removed 21 redundant places. [2022-01-19 00:41:40,392 INFO L242 Difference]: Finished difference. Result has 892 places, 701 transitions, 16838 flow [2022-01-19 00:41:40,392 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15571, PETRI_DIFFERENCE_MINUEND_PLACES=831, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=524, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=16838, PETRI_PLACES=892, PETRI_TRANSITIONS=701} [2022-01-19 00:41:40,392 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 705 predicate places. [2022-01-19 00:41:40,392 INFO L470 AbstractCegarLoop]: Abstraction has has 892 places, 701 transitions, 16838 flow [2022-01-19 00:41:40,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:40,393 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:41:40,393 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:41:40,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2022-01-19 00:41:40,393 INFO L402 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:41:40,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:41:40,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1018448108, now seen corresponding path program 161 times [2022-01-19 00:41:40,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:41:40,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033196659] [2022-01-19 00:41:40,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:41:40,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:41:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:41:40,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:41:40,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:41:40,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033196659] [2022-01-19 00:41:40,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033196659] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:41:40,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:41:40,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:41:40,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762155806] [2022-01-19 00:41:40,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:41:40,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:41:40,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:41:40,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:41:40,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:41:40,518 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:41:40,519 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 892 places, 701 transitions, 16838 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:40,519 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:41:40,519 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:41:40,519 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:41:42,392 INFO L129 PetriNetUnfolder]: 1024/3401 cut-off events. [2022-01-19 00:41:42,392 INFO L130 PetriNetUnfolder]: For 231266/231279 co-relation queries the response was YES. [2022-01-19 00:41:42,477 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33946 conditions, 3401 events. 1024/3401 cut-off events. For 231266/231279 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 27503 event pairs, 452 based on Foata normal form. 1/3300 useless extension candidates. Maximal degree in co-relation 33587. Up to 917 conditions per place. [2022-01-19 00:41:42,491 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 452 selfloop transitions, 165 changer transitions 61/819 dead transitions. [2022-01-19 00:41:42,492 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 907 places, 819 transitions, 22685 flow [2022-01-19 00:41:42,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:41:42,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:41:42,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6089 transitions. [2022-01-19 00:41:42,494 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7630325814536341 [2022-01-19 00:41:42,494 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6089 transitions. [2022-01-19 00:41:42,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6089 transitions. [2022-01-19 00:41:42,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:41:42,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6089 transitions. [2022-01-19 00:41:42,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.23684210526315) internal successors, (6089), 38 states have internal predecessors, (6089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:42,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:42,501 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:42,502 INFO L186 Difference]: Start difference. First operand has 892 places, 701 transitions, 16838 flow. Second operand 38 states and 6089 transitions. [2022-01-19 00:41:42,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 907 places, 819 transitions, 22685 flow [2022-01-19 00:41:44,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 887 places, 819 transitions, 21941 flow, removed 291 selfloop flow, removed 20 redundant places. [2022-01-19 00:41:44,096 INFO L242 Difference]: Finished difference. Result has 910 places, 717 transitions, 17487 flow [2022-01-19 00:41:44,096 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16454, PETRI_DIFFERENCE_MINUEND_PLACES=850, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=544, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=17487, PETRI_PLACES=910, PETRI_TRANSITIONS=717} [2022-01-19 00:41:44,096 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 723 predicate places. [2022-01-19 00:41:44,096 INFO L470 AbstractCegarLoop]: Abstraction has has 910 places, 717 transitions, 17487 flow [2022-01-19 00:41:44,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:44,097 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:41:44,097 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:41:44,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2022-01-19 00:41:44,097 INFO L402 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:41:44,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:41:44,097 INFO L85 PathProgramCache]: Analyzing trace with hash -2128100980, now seen corresponding path program 162 times [2022-01-19 00:41:44,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:41:44,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652548668] [2022-01-19 00:41:44,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:41:44,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:41:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:41:44,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:41:44,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:41:44,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652548668] [2022-01-19 00:41:44,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652548668] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:41:44,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:41:44,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:41:44,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974677801] [2022-01-19 00:41:44,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:41:44,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:41:44,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:41:44,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:41:44,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:41:44,200 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:41:44,200 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 910 places, 717 transitions, 17487 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:44,200 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:41:44,200 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:41:44,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:41:46,210 INFO L129 PetriNetUnfolder]: 1018/3394 cut-off events. [2022-01-19 00:41:46,210 INFO L130 PetriNetUnfolder]: For 227263/227276 co-relation queries the response was YES. [2022-01-19 00:41:46,285 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33814 conditions, 3394 events. 1018/3394 cut-off events. For 227263/227276 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 27546 event pairs, 455 based on Foata normal form. 1/3292 useless extension candidates. Maximal degree in co-relation 33449. Up to 921 conditions per place. [2022-01-19 00:41:46,301 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 415 selfloop transitions, 206 changer transitions 62/824 dead transitions. [2022-01-19 00:41:46,301 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 922 places, 824 transitions, 22819 flow [2022-01-19 00:41:46,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 00:41:46,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 00:41:46,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5925 transitions. [2022-01-19 00:41:46,304 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625482625482626 [2022-01-19 00:41:46,304 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5925 transitions. [2022-01-19 00:41:46,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5925 transitions. [2022-01-19 00:41:46,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:41:46,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5925 transitions. [2022-01-19 00:41:46,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.13513513513513) internal successors, (5925), 37 states have internal predecessors, (5925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:46,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:46,311 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:46,311 INFO L186 Difference]: Start difference. First operand has 910 places, 717 transitions, 17487 flow. Second operand 37 states and 5925 transitions. [2022-01-19 00:41:46,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 922 places, 824 transitions, 22819 flow [2022-01-19 00:41:47,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 904 places, 824 transitions, 22286 flow, removed 206 selfloop flow, removed 18 redundant places. [2022-01-19 00:41:47,870 INFO L242 Difference]: Finished difference. Result has 928 places, 726 transitions, 18005 flow [2022-01-19 00:41:47,870 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17171, PETRI_DIFFERENCE_MINUEND_PLACES=868, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=717, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=18005, PETRI_PLACES=928, PETRI_TRANSITIONS=726} [2022-01-19 00:41:47,871 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 741 predicate places. [2022-01-19 00:41:47,871 INFO L470 AbstractCegarLoop]: Abstraction has has 928 places, 726 transitions, 18005 flow [2022-01-19 00:41:47,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:47,871 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:41:47,871 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:41:47,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2022-01-19 00:41:47,871 INFO L402 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:41:47,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:41:47,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1347111622, now seen corresponding path program 163 times [2022-01-19 00:41:47,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:41:47,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530245043] [2022-01-19 00:41:47,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:41:47,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:41:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:41:47,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:41:47,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:41:47,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530245043] [2022-01-19 00:41:47,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530245043] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:41:47,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:41:47,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:41:47,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932032515] [2022-01-19 00:41:47,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:41:47,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:41:47,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:41:47,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:41:47,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:41:47,986 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:41:47,986 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 928 places, 726 transitions, 18005 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:47,986 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:41:47,986 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:41:47,986 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:41:49,939 INFO L129 PetriNetUnfolder]: 1014/3386 cut-off events. [2022-01-19 00:41:49,939 INFO L130 PetriNetUnfolder]: For 238932/238945 co-relation queries the response was YES. [2022-01-19 00:41:50,031 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33626 conditions, 3386 events. 1014/3386 cut-off events. For 238932/238945 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 27434 event pairs, 448 based on Foata normal form. 1/3284 useless extension candidates. Maximal degree in co-relation 33253. Up to 913 conditions per place. [2022-01-19 00:41:50,047 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 468 selfloop transitions, 165 changer transitions 62/836 dead transitions. [2022-01-19 00:41:50,047 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 941 places, 836 transitions, 23627 flow [2022-01-19 00:41:50,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 00:41:50,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 00:41:50,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5935 transitions. [2022-01-19 00:41:50,050 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7638352638352638 [2022-01-19 00:41:50,050 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5935 transitions. [2022-01-19 00:41:50,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5935 transitions. [2022-01-19 00:41:50,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:41:50,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5935 transitions. [2022-01-19 00:41:50,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.40540540540542) internal successors, (5935), 37 states have internal predecessors, (5935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:50,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:50,057 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:50,057 INFO L186 Difference]: Start difference. First operand has 928 places, 726 transitions, 18005 flow. Second operand 37 states and 5935 transitions. [2022-01-19 00:41:50,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 941 places, 836 transitions, 23627 flow [2022-01-19 00:41:51,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 921 places, 836 transitions, 22923 flow, removed 228 selfloop flow, removed 20 redundant places. [2022-01-19 00:41:51,849 INFO L242 Difference]: Finished difference. Result has 945 places, 734 transitions, 18256 flow [2022-01-19 00:41:51,849 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17543, PETRI_DIFFERENCE_MINUEND_PLACES=885, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=18256, PETRI_PLACES=945, PETRI_TRANSITIONS=734} [2022-01-19 00:41:51,849 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 758 predicate places. [2022-01-19 00:41:51,849 INFO L470 AbstractCegarLoop]: Abstraction has has 945 places, 734 transitions, 18256 flow [2022-01-19 00:41:51,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:51,850 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:41:51,850 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:41:51,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2022-01-19 00:41:51,850 INFO L402 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:41:51,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:41:51,850 INFO L85 PathProgramCache]: Analyzing trace with hash -229903456, now seen corresponding path program 164 times [2022-01-19 00:41:51,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:41:51,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395788055] [2022-01-19 00:41:51,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:41:51,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:41:51,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:41:51,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:41:51,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:41:51,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395788055] [2022-01-19 00:41:51,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395788055] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:41:51,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:41:51,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:41:51,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040473036] [2022-01-19 00:41:51,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:41:51,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:41:51,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:41:51,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:41:51,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:41:51,953 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:41:51,954 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 945 places, 734 transitions, 18256 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:51,954 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:41:51,954 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:41:51,954 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:41:53,901 INFO L129 PetriNetUnfolder]: 1002/3377 cut-off events. [2022-01-19 00:41:53,901 INFO L130 PetriNetUnfolder]: For 240387/240400 co-relation queries the response was YES. [2022-01-19 00:41:53,994 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33093 conditions, 3377 events. 1002/3377 cut-off events. For 240387/240400 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 27542 event pairs, 403 based on Foata normal form. 1/3277 useless extension candidates. Maximal degree in co-relation 32713. Up to 911 conditions per place. [2022-01-19 00:41:54,009 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 453 selfloop transitions, 182 changer transitions 63/839 dead transitions. [2022-01-19 00:41:54,009 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 959 places, 839 transitions, 23684 flow [2022-01-19 00:41:54,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:41:54,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:41:54,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6081 transitions. [2022-01-19 00:41:54,012 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.76203007518797 [2022-01-19 00:41:54,012 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6081 transitions. [2022-01-19 00:41:54,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6081 transitions. [2022-01-19 00:41:54,013 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:41:54,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6081 transitions. [2022-01-19 00:41:54,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.02631578947367) internal successors, (6081), 38 states have internal predecessors, (6081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:54,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:54,019 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:54,019 INFO L186 Difference]: Start difference. First operand has 945 places, 734 transitions, 18256 flow. Second operand 38 states and 6081 transitions. [2022-01-19 00:41:54,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 959 places, 839 transitions, 23684 flow [2022-01-19 00:41:55,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 937 places, 839 transitions, 23048 flow, removed 219 selfloop flow, removed 22 redundant places. [2022-01-19 00:41:55,788 INFO L242 Difference]: Finished difference. Result has 959 places, 740 transitions, 18478 flow [2022-01-19 00:41:55,788 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17848, PETRI_DIFFERENCE_MINUEND_PLACES=900, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=18478, PETRI_PLACES=959, PETRI_TRANSITIONS=740} [2022-01-19 00:41:55,789 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 772 predicate places. [2022-01-19 00:41:55,789 INFO L470 AbstractCegarLoop]: Abstraction has has 959 places, 740 transitions, 18478 flow [2022-01-19 00:41:55,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:55,789 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:41:55,789 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:41:55,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2022-01-19 00:41:55,789 INFO L402 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:41:55,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:41:55,790 INFO L85 PathProgramCache]: Analyzing trace with hash -79783928, now seen corresponding path program 165 times [2022-01-19 00:41:55,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:41:55,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003986124] [2022-01-19 00:41:55,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:41:55,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:41:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:41:55,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:41:55,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:41:55,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003986124] [2022-01-19 00:41:55,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003986124] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:41:55,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:41:55,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:41:55,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245165847] [2022-01-19 00:41:55,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:41:55,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:41:55,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:41:55,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:41:55,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:41:55,885 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:41:55,886 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 959 places, 740 transitions, 18478 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:55,886 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:41:55,886 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:41:55,886 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:41:57,651 INFO L129 PetriNetUnfolder]: 963/3264 cut-off events. [2022-01-19 00:41:57,651 INFO L130 PetriNetUnfolder]: For 241680/241693 co-relation queries the response was YES. [2022-01-19 00:41:57,741 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31440 conditions, 3264 events. 963/3264 cut-off events. For 241680/241693 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 26462 event pairs, 324 based on Foata normal form. 1/3178 useless extension candidates. Maximal degree in co-relation 31057. Up to 898 conditions per place. [2022-01-19 00:41:57,756 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 409 selfloop transitions, 206 changer transitions 65/821 dead transitions. [2022-01-19 00:41:57,756 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 964 places, 821 transitions, 21383 flow [2022-01-19 00:41:57,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:41:57,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:41:57,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4797 transitions. [2022-01-19 00:41:57,759 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7614285714285715 [2022-01-19 00:41:57,759 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4797 transitions. [2022-01-19 00:41:57,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4797 transitions. [2022-01-19 00:41:57,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:41:57,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4797 transitions. [2022-01-19 00:41:57,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.9) internal successors, (4797), 30 states have internal predecessors, (4797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:57,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:57,765 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:57,765 INFO L186 Difference]: Start difference. First operand has 959 places, 740 transitions, 18478 flow. Second operand 30 states and 4797 transitions. [2022-01-19 00:41:57,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 964 places, 821 transitions, 21383 flow [2022-01-19 00:41:59,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 940 places, 821 transitions, 20870 flow, removed 170 selfloop flow, removed 24 redundant places. [2022-01-19 00:41:59,469 INFO L242 Difference]: Finished difference. Result has 951 places, 701 transitions, 17365 flow [2022-01-19 00:41:59,470 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18079, PETRI_DIFFERENCE_MINUEND_PLACES=911, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17365, PETRI_PLACES=951, PETRI_TRANSITIONS=701} [2022-01-19 00:41:59,470 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 764 predicate places. [2022-01-19 00:41:59,470 INFO L470 AbstractCegarLoop]: Abstraction has has 951 places, 701 transitions, 17365 flow [2022-01-19 00:41:59,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:59,470 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:41:59,470 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:41:59,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2022-01-19 00:41:59,470 INFO L402 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:41:59,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:41:59,471 INFO L85 PathProgramCache]: Analyzing trace with hash -632030626, now seen corresponding path program 166 times [2022-01-19 00:41:59,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:41:59,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663626330] [2022-01-19 00:41:59,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:41:59,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:41:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:41:59,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:41:59,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:41:59,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663626330] [2022-01-19 00:41:59,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663626330] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:41:59,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:41:59,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:41:59,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361116262] [2022-01-19 00:41:59,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:41:59,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:41:59,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:41:59,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:41:59,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:41:59,574 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:41:59,575 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 951 places, 701 transitions, 17365 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:59,575 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:41:59,575 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:41:59,575 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:42:01,332 INFO L129 PetriNetUnfolder]: 958/3249 cut-off events. [2022-01-19 00:42:01,332 INFO L130 PetriNetUnfolder]: For 237398/237411 co-relation queries the response was YES. [2022-01-19 00:42:01,407 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31273 conditions, 3249 events. 958/3249 cut-off events. For 237398/237411 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 26252 event pairs, 374 based on Foata normal form. 1/3153 useless extension candidates. Maximal degree in co-relation 30900. Up to 896 conditions per place. [2022-01-19 00:42:01,422 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 436 selfloop transitions, 182 changer transitions 57/816 dead transitions. [2022-01-19 00:42:01,422 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 933 places, 816 transitions, 21868 flow [2022-01-19 00:42:01,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:42:01,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:42:01,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4817 transitions. [2022-01-19 00:42:01,424 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646031746031746 [2022-01-19 00:42:01,424 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4817 transitions. [2022-01-19 00:42:01,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4817 transitions. [2022-01-19 00:42:01,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:42:01,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4817 transitions. [2022-01-19 00:42:01,427 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.56666666666666) internal successors, (4817), 30 states have internal predecessors, (4817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:01,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:01,430 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:01,430 INFO L186 Difference]: Start difference. First operand has 951 places, 701 transitions, 17365 flow. Second operand 30 states and 4817 transitions. [2022-01-19 00:42:01,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 933 places, 816 transitions, 21868 flow [2022-01-19 00:42:02,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 887 places, 816 transitions, 20009 flow, removed 141 selfloop flow, removed 46 redundant places. [2022-01-19 00:42:03,012 INFO L242 Difference]: Finished difference. Result has 902 places, 710 transitions, 16650 flow [2022-01-19 00:42:03,012 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15863, PETRI_DIFFERENCE_MINUEND_PLACES=858, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=526, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=16650, PETRI_PLACES=902, PETRI_TRANSITIONS=710} [2022-01-19 00:42:03,012 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 715 predicate places. [2022-01-19 00:42:03,012 INFO L470 AbstractCegarLoop]: Abstraction has has 902 places, 710 transitions, 16650 flow [2022-01-19 00:42:03,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:03,013 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:42:03,013 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:42:03,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2022-01-19 00:42:03,013 INFO L402 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:42:03,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:42:03,013 INFO L85 PathProgramCache]: Analyzing trace with hash 2117682024, now seen corresponding path program 167 times [2022-01-19 00:42:03,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:42:03,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139427445] [2022-01-19 00:42:03,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:42:03,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:42:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:42:03,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:42:03,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:42:03,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139427445] [2022-01-19 00:42:03,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139427445] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:42:03,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:42:03,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:42:03,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262865843] [2022-01-19 00:42:03,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:42:03,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:42:03,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:42:03,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:42:03,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:42:03,113 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:42:03,114 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 902 places, 710 transitions, 16650 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:03,114 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:42:03,114 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:42:03,114 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:42:04,740 INFO L129 PetriNetUnfolder]: 933/3173 cut-off events. [2022-01-19 00:42:04,740 INFO L130 PetriNetUnfolder]: For 218900/218913 co-relation queries the response was YES. [2022-01-19 00:42:04,820 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29244 conditions, 3173 events. 933/3173 cut-off events. For 218900/218913 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 25465 event pairs, 371 based on Foata normal form. 1/3078 useless extension candidates. Maximal degree in co-relation 28887. Up to 889 conditions per place. [2022-01-19 00:42:04,834 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 430 selfloop transitions, 156 changer transitions 63/790 dead transitions. [2022-01-19 00:42:04,834 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 916 places, 790 transitions, 19903 flow [2022-01-19 00:42:04,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:42:04,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:42:04,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4805 transitions. [2022-01-19 00:42:04,836 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7626984126984127 [2022-01-19 00:42:04,836 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4805 transitions. [2022-01-19 00:42:04,836 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4805 transitions. [2022-01-19 00:42:04,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:42:04,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4805 transitions. [2022-01-19 00:42:04,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.16666666666666) internal successors, (4805), 30 states have internal predecessors, (4805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:04,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:04,842 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:04,842 INFO L186 Difference]: Start difference. First operand has 902 places, 710 transitions, 16650 flow. Second operand 30 states and 4805 transitions. [2022-01-19 00:42:04,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 916 places, 790 transitions, 19903 flow [2022-01-19 00:42:06,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 902 places, 790 transitions, 19313 flow, removed 227 selfloop flow, removed 14 redundant places. [2022-01-19 00:42:06,334 INFO L242 Difference]: Finished difference. Result has 913 places, 679 transitions, 15697 flow [2022-01-19 00:42:06,335 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16216, PETRI_DIFFERENCE_MINUEND_PLACES=873, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=554, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=15697, PETRI_PLACES=913, PETRI_TRANSITIONS=679} [2022-01-19 00:42:06,335 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 726 predicate places. [2022-01-19 00:42:06,335 INFO L470 AbstractCegarLoop]: Abstraction has has 913 places, 679 transitions, 15697 flow [2022-01-19 00:42:06,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:06,335 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:42:06,335 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:42:06,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2022-01-19 00:42:06,335 INFO L402 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:42:06,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:42:06,336 INFO L85 PathProgramCache]: Analyzing trace with hash -743667636, now seen corresponding path program 168 times [2022-01-19 00:42:06,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:42:06,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030187017] [2022-01-19 00:42:06,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:42:06,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:42:06,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:42:06,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:42:06,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:42:06,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030187017] [2022-01-19 00:42:06,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030187017] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:42:06,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:42:06,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:42:06,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547629973] [2022-01-19 00:42:06,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:42:06,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:42:06,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:42:06,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:42:06,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:42:06,427 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:42:06,428 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 913 places, 679 transitions, 15697 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:06,428 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:42:06,428 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:42:06,428 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:42:08,099 INFO L129 PetriNetUnfolder]: 937/3214 cut-off events. [2022-01-19 00:42:08,099 INFO L130 PetriNetUnfolder]: For 205034/205047 co-relation queries the response was YES. [2022-01-19 00:42:08,184 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29114 conditions, 3214 events. 937/3214 cut-off events. For 205034/205047 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 25909 event pairs, 367 based on Foata normal form. 1/3119 useless extension candidates. Maximal degree in co-relation 28757. Up to 889 conditions per place. [2022-01-19 00:42:08,199 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 418 selfloop transitions, 170 changer transitions 71/800 dead transitions. [2022-01-19 00:42:08,199 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 905 places, 800 transitions, 19863 flow [2022-01-19 00:42:08,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-19 00:42:08,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-01-19 00:42:08,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5442 transitions. [2022-01-19 00:42:08,202 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7621848739495798 [2022-01-19 00:42:08,202 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5442 transitions. [2022-01-19 00:42:08,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5442 transitions. [2022-01-19 00:42:08,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:42:08,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5442 transitions. [2022-01-19 00:42:08,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 160.05882352941177) internal successors, (5442), 34 states have internal predecessors, (5442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:08,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:08,209 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:08,209 INFO L186 Difference]: Start difference. First operand has 913 places, 679 transitions, 15697 flow. Second operand 34 states and 5442 transitions. [2022-01-19 00:42:08,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 905 places, 800 transitions, 19863 flow [2022-01-19 00:42:09,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 869 places, 800 transitions, 18730 flow, removed 127 selfloop flow, removed 36 redundant places. [2022-01-19 00:42:09,627 INFO L242 Difference]: Finished difference. Result has 889 places, 682 transitions, 15466 flow [2022-01-19 00:42:09,628 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14854, PETRI_DIFFERENCE_MINUEND_PLACES=836, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=15466, PETRI_PLACES=889, PETRI_TRANSITIONS=682} [2022-01-19 00:42:09,628 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 702 predicate places. [2022-01-19 00:42:09,628 INFO L470 AbstractCegarLoop]: Abstraction has has 889 places, 682 transitions, 15466 flow [2022-01-19 00:42:09,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:09,628 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:42:09,628 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:42:09,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2022-01-19 00:42:09,629 INFO L402 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:42:09,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:42:09,629 INFO L85 PathProgramCache]: Analyzing trace with hash -472356196, now seen corresponding path program 169 times [2022-01-19 00:42:09,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:42:09,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769956818] [2022-01-19 00:42:09,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:42:09,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:42:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:42:09,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:42:09,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:42:09,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769956818] [2022-01-19 00:42:09,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769956818] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:42:09,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:42:09,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:42:09,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125858683] [2022-01-19 00:42:09,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:42:09,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:42:09,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:42:09,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:42:09,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:42:09,738 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:42:09,738 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 889 places, 682 transitions, 15466 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:09,738 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:42:09,738 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:42:09,738 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:42:11,366 INFO L129 PetriNetUnfolder]: 940/3211 cut-off events. [2022-01-19 00:42:11,366 INFO L130 PetriNetUnfolder]: For 199017/199030 co-relation queries the response was YES. [2022-01-19 00:42:11,440 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28329 conditions, 3211 events. 940/3211 cut-off events. For 199017/199030 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 25870 event pairs, 365 based on Foata normal form. 1/3114 useless extension candidates. Maximal degree in co-relation 27975. Up to 889 conditions per place. [2022-01-19 00:42:11,453 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 422 selfloop transitions, 176 changer transitions 58/797 dead transitions. [2022-01-19 00:42:11,453 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 897 places, 797 transitions, 19429 flow [2022-01-19 00:42:11,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:42:11,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:42:11,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4660 transitions. [2022-01-19 00:42:11,455 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7651888341543513 [2022-01-19 00:42:11,455 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4660 transitions. [2022-01-19 00:42:11,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4660 transitions. [2022-01-19 00:42:11,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:42:11,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4660 transitions. [2022-01-19 00:42:11,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.68965517241378) internal successors, (4660), 29 states have internal predecessors, (4660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:11,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:11,461 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:11,461 INFO L186 Difference]: Start difference. First operand has 889 places, 682 transitions, 15466 flow. Second operand 29 states and 4660 transitions. [2022-01-19 00:42:11,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 897 places, 797 transitions, 19429 flow [2022-01-19 00:42:12,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 869 places, 797 transitions, 18454 flow, removed 274 selfloop flow, removed 28 redundant places. [2022-01-19 00:42:12,845 INFO L242 Difference]: Finished difference. Result has 883 places, 694 transitions, 15579 flow [2022-01-19 00:42:12,845 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14882, PETRI_DIFFERENCE_MINUEND_PLACES=841, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=682, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=15579, PETRI_PLACES=883, PETRI_TRANSITIONS=694} [2022-01-19 00:42:12,846 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 696 predicate places. [2022-01-19 00:42:12,846 INFO L470 AbstractCegarLoop]: Abstraction has has 883 places, 694 transitions, 15579 flow [2022-01-19 00:42:12,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:12,846 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:42:12,846 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:42:12,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2022-01-19 00:42:12,846 INFO L402 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:42:12,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:42:12,846 INFO L85 PathProgramCache]: Analyzing trace with hash -686172648, now seen corresponding path program 170 times [2022-01-19 00:42:12,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:42:12,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523246660] [2022-01-19 00:42:12,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:42:12,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:42:12,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:42:12,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:42:12,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:42:12,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523246660] [2022-01-19 00:42:12,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523246660] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:42:12,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:42:12,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:42:12,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544077767] [2022-01-19 00:42:12,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:42:12,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:42:12,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:42:12,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:42:12,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:42:12,941 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:42:12,942 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 883 places, 694 transitions, 15579 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:12,942 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:42:12,942 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:42:12,942 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:42:14,483 INFO L129 PetriNetUnfolder]: 941/3216 cut-off events. [2022-01-19 00:42:14,484 INFO L130 PetriNetUnfolder]: For 178193/178206 co-relation queries the response was YES. [2022-01-19 00:42:14,562 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27500 conditions, 3216 events. 941/3216 cut-off events. For 178193/178206 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 25942 event pairs, 365 based on Foata normal form. 1/3118 useless extension candidates. Maximal degree in co-relation 27152. Up to 890 conditions per place. [2022-01-19 00:42:14,575 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 421 selfloop transitions, 185 changer transitions 58/805 dead transitions. [2022-01-19 00:42:14,575 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 897 places, 805 transitions, 19317 flow [2022-01-19 00:42:14,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:42:14,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:42:14,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4656 transitions. [2022-01-19 00:42:14,578 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7645320197044335 [2022-01-19 00:42:14,578 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4656 transitions. [2022-01-19 00:42:14,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4656 transitions. [2022-01-19 00:42:14,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:42:14,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4656 transitions. [2022-01-19 00:42:14,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.55172413793105) internal successors, (4656), 29 states have internal predecessors, (4656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:14,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:14,583 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:14,583 INFO L186 Difference]: Start difference. First operand has 883 places, 694 transitions, 15579 flow. Second operand 29 states and 4656 transitions. [2022-01-19 00:42:14,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 897 places, 805 transitions, 19317 flow [2022-01-19 00:42:15,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 885 places, 805 transitions, 18918 flow, removed 45 selfloop flow, removed 12 redundant places. [2022-01-19 00:42:15,932 INFO L242 Difference]: Finished difference. Result has 899 places, 706 transitions, 16037 flow [2022-01-19 00:42:15,932 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15244, PETRI_DIFFERENCE_MINUEND_PLACES=857, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=16037, PETRI_PLACES=899, PETRI_TRANSITIONS=706} [2022-01-19 00:42:15,933 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 712 predicate places. [2022-01-19 00:42:15,933 INFO L470 AbstractCegarLoop]: Abstraction has has 899 places, 706 transitions, 16037 flow [2022-01-19 00:42:15,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:15,933 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:42:15,933 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:42:15,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2022-01-19 00:42:15,933 INFO L402 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:42:15,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:42:15,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1099621338, now seen corresponding path program 171 times [2022-01-19 00:42:15,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:42:15,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372995417] [2022-01-19 00:42:15,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:42:15,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:42:15,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:42:16,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:42:16,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:42:16,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372995417] [2022-01-19 00:42:16,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372995417] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:42:16,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:42:16,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:42:16,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479509433] [2022-01-19 00:42:16,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:42:16,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:42:16,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:42:16,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:42:16,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:42:16,027 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:42:16,028 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 899 places, 706 transitions, 16037 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:16,028 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:42:16,028 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:42:16,028 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:42:17,626 INFO L129 PetriNetUnfolder]: 926/3186 cut-off events. [2022-01-19 00:42:17,626 INFO L130 PetriNetUnfolder]: For 185670/185683 co-relation queries the response was YES. [2022-01-19 00:42:17,706 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27816 conditions, 3186 events. 926/3186 cut-off events. For 185670/185683 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 25618 event pairs, 372 based on Foata normal form. 1/3091 useless extension candidates. Maximal degree in co-relation 27462. Up to 888 conditions per place. [2022-01-19 00:42:17,719 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 422 selfloop transitions, 164 changer transitions 63/790 dead transitions. [2022-01-19 00:42:17,719 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 914 places, 790 transitions, 19028 flow [2022-01-19 00:42:17,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:42:17,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:42:17,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4807 transitions. [2022-01-19 00:42:17,721 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763015873015873 [2022-01-19 00:42:17,721 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4807 transitions. [2022-01-19 00:42:17,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4807 transitions. [2022-01-19 00:42:17,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:42:17,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4807 transitions. [2022-01-19 00:42:17,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.23333333333332) internal successors, (4807), 30 states have internal predecessors, (4807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:17,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:17,727 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:17,728 INFO L186 Difference]: Start difference. First operand has 899 places, 706 transitions, 16037 flow. Second operand 30 states and 4807 transitions. [2022-01-19 00:42:17,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 914 places, 790 transitions, 19028 flow [2022-01-19 00:42:19,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 901 places, 790 transitions, 18664 flow, removed 94 selfloop flow, removed 13 redundant places. [2022-01-19 00:42:19,121 INFO L242 Difference]: Finished difference. Result has 910 places, 686 transitions, 15555 flow [2022-01-19 00:42:19,121 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15732, PETRI_DIFFERENCE_MINUEND_PLACES=872, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=706, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=15555, PETRI_PLACES=910, PETRI_TRANSITIONS=686} [2022-01-19 00:42:19,121 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 723 predicate places. [2022-01-19 00:42:19,121 INFO L470 AbstractCegarLoop]: Abstraction has has 910 places, 686 transitions, 15555 flow [2022-01-19 00:42:19,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:19,122 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:42:19,122 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:42:19,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2022-01-19 00:42:19,122 INFO L402 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:42:19,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:42:19,122 INFO L85 PathProgramCache]: Analyzing trace with hash -484841400, now seen corresponding path program 172 times [2022-01-19 00:42:19,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:42:19,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268058628] [2022-01-19 00:42:19,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:42:19,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:42:19,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:42:19,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:42:19,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:42:19,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268058628] [2022-01-19 00:42:19,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268058628] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:42:19,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:42:19,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:42:19,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888758753] [2022-01-19 00:42:19,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:42:19,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:42:19,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:42:19,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:42:19,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:42:19,221 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:42:19,222 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 910 places, 686 transitions, 15555 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:19,222 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:42:19,222 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:42:19,222 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:42:20,832 INFO L129 PetriNetUnfolder]: 942/3210 cut-off events. [2022-01-19 00:42:20,832 INFO L130 PetriNetUnfolder]: For 187001/187014 co-relation queries the response was YES. [2022-01-19 00:42:20,909 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28671 conditions, 3210 events. 942/3210 cut-off events. For 187001/187014 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 25819 event pairs, 412 based on Foata normal form. 1/3112 useless extension candidates. Maximal degree in co-relation 28316. Up to 889 conditions per place. [2022-01-19 00:42:20,923 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 435 selfloop transitions, 163 changer transitions 55/794 dead transitions. [2022-01-19 00:42:20,923 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 912 places, 794 transitions, 20015 flow [2022-01-19 00:42:20,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:42:20,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:42:20,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4824 transitions. [2022-01-19 00:42:20,925 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7657142857142857 [2022-01-19 00:42:20,926 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4824 transitions. [2022-01-19 00:42:20,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4824 transitions. [2022-01-19 00:42:20,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:42:20,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4824 transitions. [2022-01-19 00:42:20,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.8) internal successors, (4824), 30 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:20,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:20,931 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:20,931 INFO L186 Difference]: Start difference. First operand has 910 places, 686 transitions, 15555 flow. Second operand 30 states and 4824 transitions. [2022-01-19 00:42:20,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 912 places, 794 transitions, 20015 flow [2022-01-19 00:42:22,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 878 places, 794 transitions, 19331 flow, removed 97 selfloop flow, removed 34 redundant places. [2022-01-19 00:42:22,334 INFO L242 Difference]: Finished difference. Result has 893 places, 698 transitions, 15973 flow [2022-01-19 00:42:22,334 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15057, PETRI_DIFFERENCE_MINUEND_PLACES=849, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=686, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=15973, PETRI_PLACES=893, PETRI_TRANSITIONS=698} [2022-01-19 00:42:22,334 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 706 predicate places. [2022-01-19 00:42:22,334 INFO L470 AbstractCegarLoop]: Abstraction has has 893 places, 698 transitions, 15973 flow [2022-01-19 00:42:22,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:22,335 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:42:22,335 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:42:22,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2022-01-19 00:42:22,335 INFO L402 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:42:22,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:42:22,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1244779086, now seen corresponding path program 173 times [2022-01-19 00:42:22,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:42:22,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369244662] [2022-01-19 00:42:22,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:42:22,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:42:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:42:22,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:42:22,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:42:22,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369244662] [2022-01-19 00:42:22,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369244662] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:42:22,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:42:22,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:42:22,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611388142] [2022-01-19 00:42:22,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:42:22,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:42:22,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:42:22,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:42:22,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:42:22,433 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:42:22,434 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 893 places, 698 transitions, 15973 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:22,434 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:42:22,434 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:42:22,434 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:42:24,043 INFO L129 PetriNetUnfolder]: 937/3200 cut-off events. [2022-01-19 00:42:24,043 INFO L130 PetriNetUnfolder]: For 200205/200218 co-relation queries the response was YES. [2022-01-19 00:42:24,226 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29171 conditions, 3200 events. 937/3200 cut-off events. For 200205/200218 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 25595 event pairs, 405 based on Foata normal form. 1/3103 useless extension candidates. Maximal degree in co-relation 28822. Up to 888 conditions per place. [2022-01-19 00:42:24,239 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 440 selfloop transitions, 170 changer transitions 58/809 dead transitions. [2022-01-19 00:42:24,239 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 906 places, 809 transitions, 20577 flow [2022-01-19 00:42:24,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:42:24,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:42:24,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4666 transitions. [2022-01-19 00:42:24,241 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7661740558292283 [2022-01-19 00:42:24,241 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4666 transitions. [2022-01-19 00:42:24,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4666 transitions. [2022-01-19 00:42:24,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:42:24,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4666 transitions. [2022-01-19 00:42:24,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.89655172413794) internal successors, (4666), 29 states have internal predecessors, (4666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:24,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:24,247 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:24,247 INFO L186 Difference]: Start difference. First operand has 893 places, 698 transitions, 15973 flow. Second operand 29 states and 4666 transitions. [2022-01-19 00:42:24,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 906 places, 809 transitions, 20577 flow [2022-01-19 00:42:25,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 894 places, 809 transitions, 19920 flow, removed 247 selfloop flow, removed 12 redundant places. [2022-01-19 00:42:25,689 INFO L242 Difference]: Finished difference. Result has 907 places, 714 transitions, 16697 flow [2022-01-19 00:42:25,689 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15513, PETRI_DIFFERENCE_MINUEND_PLACES=866, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=156, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=537, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=16697, PETRI_PLACES=907, PETRI_TRANSITIONS=714} [2022-01-19 00:42:25,690 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 720 predicate places. [2022-01-19 00:42:25,690 INFO L470 AbstractCegarLoop]: Abstraction has has 907 places, 714 transitions, 16697 flow [2022-01-19 00:42:25,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:25,690 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:42:25,690 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:42:25,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2022-01-19 00:42:25,690 INFO L402 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:42:25,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:42:25,690 INFO L85 PathProgramCache]: Analyzing trace with hash 4568056, now seen corresponding path program 174 times [2022-01-19 00:42:25,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:42:25,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042672141] [2022-01-19 00:42:25,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:42:25,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:42:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:42:25,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:42:25,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:42:25,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042672141] [2022-01-19 00:42:25,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042672141] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:42:25,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:42:25,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:42:25,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711108230] [2022-01-19 00:42:25,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:42:25,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:42:25,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:42:25,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:42:25,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:42:25,790 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:42:25,790 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 907 places, 714 transitions, 16697 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:25,791 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:42:25,791 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:42:25,791 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:42:27,432 INFO L129 PetriNetUnfolder]: 938/3209 cut-off events. [2022-01-19 00:42:27,433 INFO L130 PetriNetUnfolder]: For 189655/189668 co-relation queries the response was YES. [2022-01-19 00:42:27,513 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28916 conditions, 3209 events. 938/3209 cut-off events. For 189655/189668 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 25766 event pairs, 402 based on Foata normal form. 1/3110 useless extension candidates. Maximal degree in co-relation 28562. Up to 889 conditions per place. [2022-01-19 00:42:27,527 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 453 selfloop transitions, 162 changer transitions 59/815 dead transitions. [2022-01-19 00:42:27,527 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 920 places, 815 transitions, 20703 flow [2022-01-19 00:42:27,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 00:42:27,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 00:42:27,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4515 transitions. [2022-01-19 00:42:27,529 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7678571428571429 [2022-01-19 00:42:27,529 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4515 transitions. [2022-01-19 00:42:27,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4515 transitions. [2022-01-19 00:42:27,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:42:27,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4515 transitions. [2022-01-19 00:42:27,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 161.25) internal successors, (4515), 28 states have internal predecessors, (4515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:27,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:27,535 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:27,535 INFO L186 Difference]: Start difference. First operand has 907 places, 714 transitions, 16697 flow. Second operand 28 states and 4515 transitions. [2022-01-19 00:42:27,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 920 places, 815 transitions, 20703 flow [2022-01-19 00:42:29,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 903 places, 815 transitions, 19618 flow, removed 446 selfloop flow, removed 17 redundant places. [2022-01-19 00:42:29,036 INFO L242 Difference]: Finished difference. Result has 915 places, 722 transitions, 16526 flow [2022-01-19 00:42:29,036 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15965, PETRI_DIFFERENCE_MINUEND_PLACES=876, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=714, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=16526, PETRI_PLACES=915, PETRI_TRANSITIONS=722} [2022-01-19 00:42:29,037 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 728 predicate places. [2022-01-19 00:42:29,037 INFO L470 AbstractCegarLoop]: Abstraction has has 915 places, 722 transitions, 16526 flow [2022-01-19 00:42:29,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:29,037 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:42:29,037 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:42:29,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2022-01-19 00:42:29,037 INFO L402 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:42:29,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:42:29,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1115585934, now seen corresponding path program 175 times [2022-01-19 00:42:29,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:42:29,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797056148] [2022-01-19 00:42:29,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:42:29,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:42:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:42:29,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:42:29,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:42:29,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797056148] [2022-01-19 00:42:29,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797056148] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:42:29,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:42:29,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:42:29,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033525694] [2022-01-19 00:42:29,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:42:29,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:42:29,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:42:29,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:42:29,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:42:29,140 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:42:29,141 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 915 places, 722 transitions, 16526 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:29,141 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:42:29,141 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:42:29,141 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:42:30,723 INFO L129 PetriNetUnfolder]: 916/3141 cut-off events. [2022-01-19 00:42:30,723 INFO L130 PetriNetUnfolder]: For 148362/148375 co-relation queries the response was YES. [2022-01-19 00:42:30,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26252 conditions, 3141 events. 916/3141 cut-off events. For 148362/148375 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 25115 event pairs, 408 based on Foata normal form. 1/3042 useless extension candidates. Maximal degree in co-relation 25899. Up to 883 conditions per place. [2022-01-19 00:42:30,811 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 447 selfloop transitions, 143 changer transitions 61/792 dead transitions. [2022-01-19 00:42:30,811 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 931 places, 792 transitions, 19456 flow [2022-01-19 00:42:30,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:42:30,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:42:30,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4817 transitions. [2022-01-19 00:42:30,814 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646031746031746 [2022-01-19 00:42:30,814 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4817 transitions. [2022-01-19 00:42:30,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4817 transitions. [2022-01-19 00:42:30,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:42:30,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4817 transitions. [2022-01-19 00:42:30,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.56666666666666) internal successors, (4817), 30 states have internal predecessors, (4817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:30,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:30,819 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:30,819 INFO L186 Difference]: Start difference. First operand has 915 places, 722 transitions, 16526 flow. Second operand 30 states and 4817 transitions. [2022-01-19 00:42:30,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 931 places, 792 transitions, 19456 flow [2022-01-19 00:42:32,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 916 places, 792 transitions, 19045 flow, removed 58 selfloop flow, removed 15 redundant places. [2022-01-19 00:42:32,105 INFO L242 Difference]: Finished difference. Result has 927 places, 698 transitions, 15803 flow [2022-01-19 00:42:32,106 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16164, PETRI_DIFFERENCE_MINUEND_PLACES=887, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=722, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=579, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=15803, PETRI_PLACES=927, PETRI_TRANSITIONS=698} [2022-01-19 00:42:32,106 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 740 predicate places. [2022-01-19 00:42:32,106 INFO L470 AbstractCegarLoop]: Abstraction has has 927 places, 698 transitions, 15803 flow [2022-01-19 00:42:32,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:32,106 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:42:32,106 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:42:32,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2022-01-19 00:42:32,106 INFO L402 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:42:32,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:42:32,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1170635184, now seen corresponding path program 176 times [2022-01-19 00:42:32,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:42:32,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925445797] [2022-01-19 00:42:32,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:42:32,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:42:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:42:32,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:42:32,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:42:32,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925445797] [2022-01-19 00:42:32,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925445797] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:42:32,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:42:32,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:42:32,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728091314] [2022-01-19 00:42:32,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:42:32,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:42:32,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:42:32,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:42:32,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:42:32,206 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:42:32,207 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 927 places, 698 transitions, 15803 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:32,207 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:42:32,207 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:42:32,207 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:42:33,786 INFO L129 PetriNetUnfolder]: 915/3147 cut-off events. [2022-01-19 00:42:33,786 INFO L130 PetriNetUnfolder]: For 146412/146425 co-relation queries the response was YES. [2022-01-19 00:42:33,965 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26311 conditions, 3147 events. 915/3147 cut-off events. For 146412/146425 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 25181 event pairs, 390 based on Foata normal form. 1/3050 useless extension candidates. Maximal degree in co-relation 25957. Up to 883 conditions per place. [2022-01-19 00:42:33,977 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 439 selfloop transitions, 157 changer transitions 59/796 dead transitions. [2022-01-19 00:42:33,977 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 918 places, 796 transitions, 19548 flow [2022-01-19 00:42:33,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 00:42:33,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 00:42:33,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4350 transitions. [2022-01-19 00:42:33,979 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7671957671957672 [2022-01-19 00:42:33,979 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4350 transitions. [2022-01-19 00:42:33,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4350 transitions. [2022-01-19 00:42:33,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:42:33,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4350 transitions. [2022-01-19 00:42:33,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 161.11111111111111) internal successors, (4350), 27 states have internal predecessors, (4350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:33,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:33,984 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:33,984 INFO L186 Difference]: Start difference. First operand has 927 places, 698 transitions, 15803 flow. Second operand 27 states and 4350 transitions. [2022-01-19 00:42:33,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 918 places, 796 transitions, 19548 flow [2022-01-19 00:42:35,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 885 places, 796 transitions, 18828 flow, removed 68 selfloop flow, removed 33 redundant places. [2022-01-19 00:42:35,172 INFO L242 Difference]: Finished difference. Result has 895 places, 702 transitions, 15673 flow [2022-01-19 00:42:35,172 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15250, PETRI_DIFFERENCE_MINUEND_PLACES=859, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=698, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=15673, PETRI_PLACES=895, PETRI_TRANSITIONS=702} [2022-01-19 00:42:35,172 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 708 predicate places. [2022-01-19 00:42:35,172 INFO L470 AbstractCegarLoop]: Abstraction has has 895 places, 702 transitions, 15673 flow [2022-01-19 00:42:35,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:35,173 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:42:35,173 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:42:35,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2022-01-19 00:42:35,173 INFO L402 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:42:35,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:42:35,173 INFO L85 PathProgramCache]: Analyzing trace with hash -407850412, now seen corresponding path program 177 times [2022-01-19 00:42:35,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:42:35,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809524593] [2022-01-19 00:42:35,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:42:35,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:42:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:42:35,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:42:35,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:42:35,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809524593] [2022-01-19 00:42:35,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809524593] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:42:35,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:42:35,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:42:35,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199220501] [2022-01-19 00:42:35,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:42:35,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:42:35,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:42:35,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:42:35,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:42:35,271 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:42:35,271 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 895 places, 702 transitions, 15673 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:35,271 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:42:35,271 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:42:35,271 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:42:36,785 INFO L129 PetriNetUnfolder]: 889/3068 cut-off events. [2022-01-19 00:42:36,785 INFO L130 PetriNetUnfolder]: For 133684/133697 co-relation queries the response was YES. [2022-01-19 00:42:36,861 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25055 conditions, 3068 events. 889/3068 cut-off events. For 133684/133697 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 24351 event pairs, 389 based on Foata normal form. 1/2972 useless extension candidates. Maximal degree in co-relation 24711. Up to 875 conditions per place. [2022-01-19 00:42:36,874 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 429 selfloop transitions, 134 changer transitions 62/766 dead transitions. [2022-01-19 00:42:36,874 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 912 places, 766 transitions, 18422 flow [2022-01-19 00:42:36,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:42:36,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:42:36,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4808 transitions. [2022-01-19 00:42:36,876 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631746031746032 [2022-01-19 00:42:36,876 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4808 transitions. [2022-01-19 00:42:36,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4808 transitions. [2022-01-19 00:42:36,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:42:36,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4808 transitions. [2022-01-19 00:42:36,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.26666666666668) internal successors, (4808), 30 states have internal predecessors, (4808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:36,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:36,882 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:36,882 INFO L186 Difference]: Start difference. First operand has 895 places, 702 transitions, 15673 flow. Second operand 30 states and 4808 transitions. [2022-01-19 00:42:36,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 912 places, 766 transitions, 18422 flow [2022-01-19 00:42:37,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 894 places, 766 transitions, 17994 flow, removed 55 selfloop flow, removed 18 redundant places. [2022-01-19 00:42:38,007 INFO L242 Difference]: Finished difference. Result has 905 places, 670 transitions, 14713 flow [2022-01-19 00:42:38,008 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15301, PETRI_DIFFERENCE_MINUEND_PLACES=865, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=14713, PETRI_PLACES=905, PETRI_TRANSITIONS=670} [2022-01-19 00:42:38,008 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 718 predicate places. [2022-01-19 00:42:38,008 INFO L470 AbstractCegarLoop]: Abstraction has has 905 places, 670 transitions, 14713 flow [2022-01-19 00:42:38,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:38,008 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:42:38,008 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:42:38,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2022-01-19 00:42:38,008 INFO L402 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:42:38,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:42:38,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1877316860, now seen corresponding path program 178 times [2022-01-19 00:42:38,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:42:38,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615674151] [2022-01-19 00:42:38,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:42:38,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:42:38,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:42:38,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:42:38,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:42:38,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615674151] [2022-01-19 00:42:38,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615674151] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:42:38,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:42:38,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:42:38,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927525995] [2022-01-19 00:42:38,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:42:38,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:42:38,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:42:38,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:42:38,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:42:38,101 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:42:38,102 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 905 places, 670 transitions, 14713 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:38,102 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:42:38,102 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:42:38,102 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:42:39,798 INFO L129 PetriNetUnfolder]: 900/3156 cut-off events. [2022-01-19 00:42:39,798 INFO L130 PetriNetUnfolder]: For 134683/134696 co-relation queries the response was YES. [2022-01-19 00:42:39,869 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25462 conditions, 3156 events. 900/3156 cut-off events. For 134683/134696 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 25385 event pairs, 384 based on Foata normal form. 1/3063 useless extension candidates. Maximal degree in co-relation 25117. Up to 875 conditions per place. [2022-01-19 00:42:39,880 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 401 selfloop transitions, 189 changer transitions 92/823 dead transitions. [2022-01-19 00:42:39,880 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 905 places, 823 transitions, 20062 flow [2022-01-19 00:42:39,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-19 00:42:39,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-01-19 00:42:39,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 6701 transitions. [2022-01-19 00:42:39,883 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.759750566893424 [2022-01-19 00:42:39,883 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 6701 transitions. [2022-01-19 00:42:39,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 6701 transitions. [2022-01-19 00:42:39,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:42:39,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 6701 transitions. [2022-01-19 00:42:39,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 159.54761904761904) internal successors, (6701), 42 states have internal predecessors, (6701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:39,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 210.0) internal successors, (9030), 43 states have internal predecessors, (9030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:39,891 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 210.0) internal successors, (9030), 43 states have internal predecessors, (9030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:39,891 INFO L186 Difference]: Start difference. First operand has 905 places, 670 transitions, 14713 flow. Second operand 42 states and 6701 transitions. [2022-01-19 00:42:39,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 905 places, 823 transitions, 20062 flow [2022-01-19 00:42:40,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 872 places, 823 transitions, 19111 flow, removed 46 selfloop flow, removed 33 redundant places. [2022-01-19 00:42:40,967 INFO L242 Difference]: Finished difference. Result has 902 places, 677 transitions, 15056 flow [2022-01-19 00:42:40,968 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14083, PETRI_DIFFERENCE_MINUEND_PLACES=831, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=15056, PETRI_PLACES=902, PETRI_TRANSITIONS=677} [2022-01-19 00:42:40,968 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 715 predicate places. [2022-01-19 00:42:40,968 INFO L470 AbstractCegarLoop]: Abstraction has has 902 places, 677 transitions, 15056 flow [2022-01-19 00:42:40,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:40,968 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:42:40,969 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:42:40,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2022-01-19 00:42:40,969 INFO L402 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:42:40,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:42:40,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1515229692, now seen corresponding path program 179 times [2022-01-19 00:42:40,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:42:40,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070391943] [2022-01-19 00:42:40,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:42:40,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:42:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:42:41,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:42:41,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:42:41,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070391943] [2022-01-19 00:42:41,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070391943] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:42:41,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:42:41,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:42:41,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808443757] [2022-01-19 00:42:41,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:42:41,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:42:41,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:42:41,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:42:41,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:42:41,069 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:42:41,069 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 902 places, 677 transitions, 15056 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:41,069 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:42:41,069 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:42:41,069 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:42:42,608 INFO L129 PetriNetUnfolder]: 897/3098 cut-off events. [2022-01-19 00:42:42,608 INFO L130 PetriNetUnfolder]: For 127879/127892 co-relation queries the response was YES. [2022-01-19 00:42:42,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25006 conditions, 3098 events. 897/3098 cut-off events. For 127879/127892 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 24708 event pairs, 399 based on Foata normal form. 1/2998 useless extension candidates. Maximal degree in co-relation 24652. Up to 875 conditions per place. [2022-01-19 00:42:42,697 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 403 selfloop transitions, 178 changer transitions 57/779 dead transitions. [2022-01-19 00:42:42,697 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 901 places, 779 transitions, 18711 flow [2022-01-19 00:42:42,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:42:42,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:42:42,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4662 transitions. [2022-01-19 00:42:42,699 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655172413793103 [2022-01-19 00:42:42,699 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4662 transitions. [2022-01-19 00:42:42,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4662 transitions. [2022-01-19 00:42:42,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:42:42,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4662 transitions. [2022-01-19 00:42:42,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.75862068965517) internal successors, (4662), 29 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:42,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:42,705 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:42,705 INFO L186 Difference]: Start difference. First operand has 902 places, 677 transitions, 15056 flow. Second operand 29 states and 4662 transitions. [2022-01-19 00:42:42,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 901 places, 779 transitions, 18711 flow [2022-01-19 00:42:43,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 863 places, 779 transitions, 17777 flow, removed 222 selfloop flow, removed 38 redundant places. [2022-01-19 00:42:43,879 INFO L242 Difference]: Finished difference. Result has 877 places, 689 transitions, 15179 flow [2022-01-19 00:42:43,879 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14473, PETRI_DIFFERENCE_MINUEND_PLACES=835, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=677, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=505, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=15179, PETRI_PLACES=877, PETRI_TRANSITIONS=689} [2022-01-19 00:42:43,880 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 690 predicate places. [2022-01-19 00:42:43,880 INFO L470 AbstractCegarLoop]: Abstraction has has 877 places, 689 transitions, 15179 flow [2022-01-19 00:42:43,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:43,880 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:42:43,880 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:42:43,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2022-01-19 00:42:43,880 INFO L402 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:42:43,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:42:43,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1226740466, now seen corresponding path program 180 times [2022-01-19 00:42:43,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:42:43,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979879298] [2022-01-19 00:42:43,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:42:43,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:42:43,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:42:43,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:42:43,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:42:43,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979879298] [2022-01-19 00:42:43,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979879298] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:42:43,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:42:43,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:42:43,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863843035] [2022-01-19 00:42:43,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:42:43,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:42:43,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:42:43,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:42:43,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:42:43,978 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:42:43,978 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 877 places, 689 transitions, 15179 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:43,978 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:42:43,978 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:42:43,978 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:42:45,500 INFO L129 PetriNetUnfolder]: 896/3095 cut-off events. [2022-01-19 00:42:45,501 INFO L130 PetriNetUnfolder]: For 112328/112341 co-relation queries the response was YES. [2022-01-19 00:42:45,576 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24493 conditions, 3095 events. 896/3095 cut-off events. For 112328/112341 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 24684 event pairs, 398 based on Foata normal form. 1/2994 useless extension candidates. Maximal degree in co-relation 24158. Up to 875 conditions per place. [2022-01-19 00:42:45,587 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 428 selfloop transitions, 160 changer transitions 59/788 dead transitions. [2022-01-19 00:42:45,587 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 890 places, 788 transitions, 18580 flow [2022-01-19 00:42:45,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 00:42:45,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 00:42:45,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4507 transitions. [2022-01-19 00:42:45,590 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7664965986394557 [2022-01-19 00:42:45,590 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4507 transitions. [2022-01-19 00:42:45,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4507 transitions. [2022-01-19 00:42:45,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:42:45,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4507 transitions. [2022-01-19 00:42:45,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.96428571428572) internal successors, (4507), 28 states have internal predecessors, (4507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:45,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:45,596 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:45,596 INFO L186 Difference]: Start difference. First operand has 877 places, 689 transitions, 15179 flow. Second operand 28 states and 4507 transitions. [2022-01-19 00:42:45,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 890 places, 788 transitions, 18580 flow [2022-01-19 00:42:46,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 878 places, 788 transitions, 18221 flow, removed 60 selfloop flow, removed 12 redundant places. [2022-01-19 00:42:46,562 INFO L242 Difference]: Finished difference. Result has 890 places, 697 transitions, 15444 flow [2022-01-19 00:42:46,562 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14872, PETRI_DIFFERENCE_MINUEND_PLACES=851, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=689, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=534, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=15444, PETRI_PLACES=890, PETRI_TRANSITIONS=697} [2022-01-19 00:42:46,562 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 703 predicate places. [2022-01-19 00:42:46,563 INFO L470 AbstractCegarLoop]: Abstraction has has 890 places, 697 transitions, 15444 flow [2022-01-19 00:42:46,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:46,563 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:42:46,563 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:42:46,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2022-01-19 00:42:46,563 INFO L402 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:42:46,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:42:46,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1444696966, now seen corresponding path program 181 times [2022-01-19 00:42:46,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:42:46,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397377925] [2022-01-19 00:42:46,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:42:46,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:42:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:42:46,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:42:46,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:42:46,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397377925] [2022-01-19 00:42:46,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397377925] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:42:46,685 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:42:46,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:42:46,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370975249] [2022-01-19 00:42:46,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:42:46,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:42:46,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:42:46,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:42:46,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:42:46,687 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:42:46,687 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 890 places, 697 transitions, 15444 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:46,687 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:42:46,687 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:42:46,687 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:42:48,434 INFO L129 PetriNetUnfolder]: 907/3167 cut-off events. [2022-01-19 00:42:48,434 INFO L130 PetriNetUnfolder]: For 115710/115723 co-relation queries the response was YES. [2022-01-19 00:42:48,502 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24979 conditions, 3167 events. 907/3167 cut-off events. For 115710/115723 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 25561 event pairs, 392 based on Foata normal form. 1/3069 useless extension candidates. Maximal degree in co-relation 24640. Up to 875 conditions per place. [2022-01-19 00:42:48,514 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 444 selfloop transitions, 166 changer transitions 72/823 dead transitions. [2022-01-19 00:42:48,514 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 912 places, 823 transitions, 19729 flow [2022-01-19 00:42:48,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 00:42:48,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 00:42:48,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5769 transitions. [2022-01-19 00:42:48,517 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763095238095238 [2022-01-19 00:42:48,517 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5769 transitions. [2022-01-19 00:42:48,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5769 transitions. [2022-01-19 00:42:48,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:42:48,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5769 transitions. [2022-01-19 00:42:48,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.25) internal successors, (5769), 36 states have internal predecessors, (5769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:48,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:48,524 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:48,524 INFO L186 Difference]: Start difference. First operand has 890 places, 697 transitions, 15444 flow. Second operand 36 states and 5769 transitions. [2022-01-19 00:42:48,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 912 places, 823 transitions, 19729 flow [2022-01-19 00:42:49,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 897 places, 823 transitions, 19259 flow, removed 77 selfloop flow, removed 15 redundant places. [2022-01-19 00:42:49,564 INFO L242 Difference]: Finished difference. Result has 920 places, 713 transitions, 16064 flow [2022-01-19 00:42:49,564 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15091, PETRI_DIFFERENCE_MINUEND_PLACES=862, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=16064, PETRI_PLACES=920, PETRI_TRANSITIONS=713} [2022-01-19 00:42:49,564 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 733 predicate places. [2022-01-19 00:42:49,565 INFO L470 AbstractCegarLoop]: Abstraction has has 920 places, 713 transitions, 16064 flow [2022-01-19 00:42:49,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:49,565 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:42:49,565 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:42:49,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2022-01-19 00:42:49,565 INFO L402 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:42:49,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:42:49,565 INFO L85 PathProgramCache]: Analyzing trace with hash -605739498, now seen corresponding path program 182 times [2022-01-19 00:42:49,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:42:49,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788941291] [2022-01-19 00:42:49,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:42:49,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:42:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:42:49,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:42:49,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:42:49,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788941291] [2022-01-19 00:42:49,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788941291] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:42:49,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:42:49,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:42:49,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090289252] [2022-01-19 00:42:49,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:42:49,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:42:49,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:42:49,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:42:49,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:42:49,662 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:42:49,663 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 920 places, 713 transitions, 16064 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:49,663 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:42:49,663 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:42:49,663 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:42:51,283 INFO L129 PetriNetUnfolder]: 918/3178 cut-off events. [2022-01-19 00:42:51,283 INFO L130 PetriNetUnfolder]: For 116623/116636 co-relation queries the response was YES. [2022-01-19 00:42:51,362 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25437 conditions, 3178 events. 918/3178 cut-off events. For 116623/116636 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 25580 event pairs, 391 based on Foata normal form. 1/3077 useless extension candidates. Maximal degree in co-relation 25085. Up to 876 conditions per place. [2022-01-19 00:42:51,374 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 407 selfloop transitions, 217 changer transitions 61/826 dead transitions. [2022-01-19 00:42:51,374 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 927 places, 826 transitions, 20016 flow [2022-01-19 00:42:51,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:42:51,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:42:51,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4817 transitions. [2022-01-19 00:42:51,376 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646031746031746 [2022-01-19 00:42:51,376 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4817 transitions. [2022-01-19 00:42:51,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4817 transitions. [2022-01-19 00:42:51,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:42:51,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4817 transitions. [2022-01-19 00:42:51,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.56666666666666) internal successors, (4817), 30 states have internal predecessors, (4817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:51,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:51,382 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:51,382 INFO L186 Difference]: Start difference. First operand has 920 places, 713 transitions, 16064 flow. Second operand 30 states and 4817 transitions. [2022-01-19 00:42:51,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 927 places, 826 transitions, 20016 flow [2022-01-19 00:42:52,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 902 places, 826 transitions, 19412 flow, removed 105 selfloop flow, removed 25 redundant places. [2022-01-19 00:42:52,438 INFO L242 Difference]: Finished difference. Result has 917 places, 730 transitions, 16618 flow [2022-01-19 00:42:52,439 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15607, PETRI_DIFFERENCE_MINUEND_PLACES=873, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=713, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=16618, PETRI_PLACES=917, PETRI_TRANSITIONS=730} [2022-01-19 00:42:52,439 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 730 predicate places. [2022-01-19 00:42:52,439 INFO L470 AbstractCegarLoop]: Abstraction has has 917 places, 730 transitions, 16618 flow [2022-01-19 00:42:52,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:52,440 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:42:52,440 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:42:52,440 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2022-01-19 00:42:52,440 INFO L402 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:42:52,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:42:52,440 INFO L85 PathProgramCache]: Analyzing trace with hash -1687932682, now seen corresponding path program 183 times [2022-01-19 00:42:52,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:42:52,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488980819] [2022-01-19 00:42:52,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:42:52,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:42:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:42:52,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:42:52,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:42:52,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488980819] [2022-01-19 00:42:52,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488980819] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:42:52,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:42:52,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:42:52,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222284489] [2022-01-19 00:42:52,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:42:52,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:42:52,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:42:52,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:42:52,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:42:52,551 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:42:52,552 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 917 places, 730 transitions, 16618 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:52,552 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:42:52,552 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:42:52,552 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:42:54,255 INFO L129 PetriNetUnfolder]: 937/3260 cut-off events. [2022-01-19 00:42:54,256 INFO L130 PetriNetUnfolder]: For 118781/118794 co-relation queries the response was YES. [2022-01-19 00:42:54,334 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26038 conditions, 3260 events. 937/3260 cut-off events. For 118781/118794 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 26610 event pairs, 398 based on Foata normal form. 1/3159 useless extension candidates. Maximal degree in co-relation 25690. Up to 875 conditions per place. [2022-01-19 00:42:54,346 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 446 selfloop transitions, 200 changer transitions 68/855 dead transitions. [2022-01-19 00:42:54,346 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 938 places, 855 transitions, 20969 flow [2022-01-19 00:42:54,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 00:42:54,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 00:42:54,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5924 transitions. [2022-01-19 00:42:54,349 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7624195624195624 [2022-01-19 00:42:54,349 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5924 transitions. [2022-01-19 00:42:54,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5924 transitions. [2022-01-19 00:42:54,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:42:54,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5924 transitions. [2022-01-19 00:42:54,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.1081081081081) internal successors, (5924), 37 states have internal predecessors, (5924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:54,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:54,356 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:54,356 INFO L186 Difference]: Start difference. First operand has 917 places, 730 transitions, 16618 flow. Second operand 37 states and 5924 transitions. [2022-01-19 00:42:54,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 938 places, 855 transitions, 20969 flow [2022-01-19 00:42:55,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 927 places, 855 transitions, 20630 flow, removed 79 selfloop flow, removed 11 redundant places. [2022-01-19 00:42:55,466 INFO L242 Difference]: Finished difference. Result has 950 places, 748 transitions, 17461 flow [2022-01-19 00:42:55,466 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16348, PETRI_DIFFERENCE_MINUEND_PLACES=891, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=182, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=17461, PETRI_PLACES=950, PETRI_TRANSITIONS=748} [2022-01-19 00:42:55,466 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 763 predicate places. [2022-01-19 00:42:55,466 INFO L470 AbstractCegarLoop]: Abstraction has has 950 places, 748 transitions, 17461 flow [2022-01-19 00:42:55,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:55,467 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:42:55,467 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:42:55,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2022-01-19 00:42:55,467 INFO L402 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:42:55,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:42:55,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1628238862, now seen corresponding path program 184 times [2022-01-19 00:42:55,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:42:55,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161231601] [2022-01-19 00:42:55,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:42:55,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:42:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:42:55,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:42:55,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:42:55,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161231601] [2022-01-19 00:42:55,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161231601] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:42:55,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:42:55,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:42:55,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142563761] [2022-01-19 00:42:55,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:42:55,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:42:55,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:42:55,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:42:55,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:42:55,574 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:42:55,575 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 950 places, 748 transitions, 17461 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:55,575 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:42:55,575 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:42:55,575 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:42:57,311 INFO L129 PetriNetUnfolder]: 938/3247 cut-off events. [2022-01-19 00:42:57,311 INFO L130 PetriNetUnfolder]: For 122718/122731 co-relation queries the response was YES. [2022-01-19 00:42:57,380 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26331 conditions, 3247 events. 938/3247 cut-off events. For 122718/122731 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 26337 event pairs, 403 based on Foata normal form. 1/3142 useless extension candidates. Maximal degree in co-relation 25969. Up to 876 conditions per place. [2022-01-19 00:42:57,393 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 463 selfloop transitions, 185 changer transitions 58/847 dead transitions. [2022-01-19 00:42:57,393 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 956 places, 847 transitions, 21174 flow [2022-01-19 00:42:57,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:42:57,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:42:57,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4822 transitions. [2022-01-19 00:42:57,395 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7653968253968254 [2022-01-19 00:42:57,395 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4822 transitions. [2022-01-19 00:42:57,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4822 transitions. [2022-01-19 00:42:57,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:42:57,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4822 transitions. [2022-01-19 00:42:57,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.73333333333332) internal successors, (4822), 30 states have internal predecessors, (4822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:57,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:57,401 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:57,401 INFO L186 Difference]: Start difference. First operand has 950 places, 748 transitions, 17461 flow. Second operand 30 states and 4822 transitions. [2022-01-19 00:42:57,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 956 places, 847 transitions, 21174 flow [2022-01-19 00:42:58,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 936 places, 847 transitions, 20759 flow, removed 66 selfloop flow, removed 20 redundant places. [2022-01-19 00:42:58,529 INFO L242 Difference]: Finished difference. Result has 949 places, 761 transitions, 17918 flow [2022-01-19 00:42:58,529 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17094, PETRI_DIFFERENCE_MINUEND_PLACES=907, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=569, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17918, PETRI_PLACES=949, PETRI_TRANSITIONS=761} [2022-01-19 00:42:58,529 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 762 predicate places. [2022-01-19 00:42:58,530 INFO L470 AbstractCegarLoop]: Abstraction has has 949 places, 761 transitions, 17918 flow [2022-01-19 00:42:58,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:58,530 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:42:58,530 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:42:58,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2022-01-19 00:42:58,530 INFO L402 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:42:58,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:42:58,530 INFO L85 PathProgramCache]: Analyzing trace with hash 628529562, now seen corresponding path program 185 times [2022-01-19 00:42:58,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:42:58,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693281470] [2022-01-19 00:42:58,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:42:58,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:42:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:42:58,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:42:58,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:42:58,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693281470] [2022-01-19 00:42:58,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693281470] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:42:58,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:42:58,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:42:58,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091010070] [2022-01-19 00:42:58,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:42:58,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:42:58,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:42:58,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:42:58,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:42:58,639 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:42:58,640 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 949 places, 761 transitions, 17918 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:58,640 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:42:58,640 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:42:58,640 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:43:00,326 INFO L129 PetriNetUnfolder]: 917/3182 cut-off events. [2022-01-19 00:43:00,326 INFO L130 PetriNetUnfolder]: For 121848/121861 co-relation queries the response was YES. [2022-01-19 00:43:00,411 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25732 conditions, 3182 events. 917/3182 cut-off events. For 121848/121861 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 25607 event pairs, 390 based on Foata normal form. 1/3080 useless extension candidates. Maximal degree in co-relation 25373. Up to 871 conditions per place. [2022-01-19 00:43:00,424 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 449 selfloop transitions, 173 changer transitions 63/826 dead transitions. [2022-01-19 00:43:00,425 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 963 places, 826 transitions, 20521 flow [2022-01-19 00:43:00,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:43:00,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:43:00,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4809 transitions. [2022-01-19 00:43:00,427 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7633333333333333 [2022-01-19 00:43:00,427 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4809 transitions. [2022-01-19 00:43:00,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4809 transitions. [2022-01-19 00:43:00,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:43:00,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4809 transitions. [2022-01-19 00:43:00,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.3) internal successors, (4809), 30 states have internal predecessors, (4809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:00,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:00,433 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:00,433 INFO L186 Difference]: Start difference. First operand has 949 places, 761 transitions, 17918 flow. Second operand 30 states and 4809 transitions. [2022-01-19 00:43:00,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 963 places, 826 transitions, 20521 flow [2022-01-19 00:43:01,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 951 places, 826 transitions, 20172 flow, removed 75 selfloop flow, removed 12 redundant places. [2022-01-19 00:43:01,564 INFO L242 Difference]: Finished difference. Result has 962 places, 734 transitions, 17162 flow [2022-01-19 00:43:01,564 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17614, PETRI_DIFFERENCE_MINUEND_PLACES=922, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=761, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=588, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17162, PETRI_PLACES=962, PETRI_TRANSITIONS=734} [2022-01-19 00:43:01,564 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 775 predicate places. [2022-01-19 00:43:01,564 INFO L470 AbstractCegarLoop]: Abstraction has has 962 places, 734 transitions, 17162 flow [2022-01-19 00:43:01,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:01,565 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:43:01,565 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:43:01,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2022-01-19 00:43:01,565 INFO L402 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:43:01,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:43:01,565 INFO L85 PathProgramCache]: Analyzing trace with hash -52605164, now seen corresponding path program 186 times [2022-01-19 00:43:01,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:43:01,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084409803] [2022-01-19 00:43:01,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:43:01,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:43:01,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:43:01,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:43:01,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:43:01,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084409803] [2022-01-19 00:43:01,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084409803] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:43:01,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:43:01,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:43:01,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076183750] [2022-01-19 00:43:01,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:43:01,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:43:01,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:43:01,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:43:01,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:43:01,667 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:43:01,668 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 962 places, 734 transitions, 17162 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:01,668 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:43:01,668 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:43:01,668 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:43:03,281 INFO L129 PetriNetUnfolder]: 912/3175 cut-off events. [2022-01-19 00:43:03,281 INFO L130 PetriNetUnfolder]: For 118669/118682 co-relation queries the response was YES. [2022-01-19 00:43:03,362 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25744 conditions, 3175 events. 912/3175 cut-off events. For 118669/118682 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 25635 event pairs, 396 based on Foata normal form. 1/3072 useless extension candidates. Maximal degree in co-relation 25382. Up to 869 conditions per place. [2022-01-19 00:43:03,374 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 451 selfloop transitions, 171 changer transitions 59/822 dead transitions. [2022-01-19 00:43:03,374 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 955 places, 822 transitions, 20509 flow [2022-01-19 00:43:03,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:43:03,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:43:03,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4664 transitions. [2022-01-19 00:43:03,377 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658456486042693 [2022-01-19 00:43:03,377 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4664 transitions. [2022-01-19 00:43:03,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4664 transitions. [2022-01-19 00:43:03,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:43:03,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4664 transitions. [2022-01-19 00:43:03,380 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.82758620689654) internal successors, (4664), 29 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:03,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:03,382 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:03,382 INFO L186 Difference]: Start difference. First operand has 962 places, 734 transitions, 17162 flow. Second operand 29 states and 4664 transitions. [2022-01-19 00:43:03,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 955 places, 822 transitions, 20509 flow [2022-01-19 00:43:04,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 925 places, 822 transitions, 19733 flow, removed 47 selfloop flow, removed 30 redundant places. [2022-01-19 00:43:04,525 INFO L242 Difference]: Finished difference. Result has 938 places, 736 transitions, 16929 flow [2022-01-19 00:43:04,525 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16519, PETRI_DIFFERENCE_MINUEND_PLACES=897, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=564, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=16929, PETRI_PLACES=938, PETRI_TRANSITIONS=736} [2022-01-19 00:43:04,525 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 751 predicate places. [2022-01-19 00:43:04,525 INFO L470 AbstractCegarLoop]: Abstraction has has 938 places, 736 transitions, 16929 flow [2022-01-19 00:43:04,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:04,526 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:43:04,526 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:43:04,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2022-01-19 00:43:04,526 INFO L402 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:43:04,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:43:04,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1115390356, now seen corresponding path program 187 times [2022-01-19 00:43:04,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:43:04,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223925843] [2022-01-19 00:43:04,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:43:04,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:43:04,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:43:04,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:43:04,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:43:04,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223925843] [2022-01-19 00:43:04,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223925843] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:43:04,620 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:43:04,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:43:04,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18262212] [2022-01-19 00:43:04,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:43:04,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:43:04,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:43:04,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:43:04,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:43:04,622 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:43:04,622 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 938 places, 736 transitions, 16929 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:04,622 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:43:04,623 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:43:04,623 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:43:06,352 INFO L129 PetriNetUnfolder]: 907/3156 cut-off events. [2022-01-19 00:43:06,353 INFO L130 PetriNetUnfolder]: For 113399/113412 co-relation queries the response was YES. [2022-01-19 00:43:06,418 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25265 conditions, 3156 events. 907/3156 cut-off events. For 113399/113412 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 25408 event pairs, 394 based on Foata normal form. 1/3054 useless extension candidates. Maximal degree in co-relation 24908. Up to 871 conditions per place. [2022-01-19 00:43:06,430 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 440 selfloop transitions, 188 changer transitions 59/828 dead transitions. [2022-01-19 00:43:06,430 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 953 places, 828 transitions, 20241 flow [2022-01-19 00:43:06,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:43:06,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:43:06,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4820 transitions. [2022-01-19 00:43:06,432 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.765079365079365 [2022-01-19 00:43:06,432 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4820 transitions. [2022-01-19 00:43:06,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4820 transitions. [2022-01-19 00:43:06,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:43:06,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4820 transitions. [2022-01-19 00:43:06,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.66666666666666) internal successors, (4820), 30 states have internal predecessors, (4820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:06,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:06,438 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:06,438 INFO L186 Difference]: Start difference. First operand has 938 places, 736 transitions, 16929 flow. Second operand 30 states and 4820 transitions. [2022-01-19 00:43:06,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 953 places, 828 transitions, 20241 flow [2022-01-19 00:43:07,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 939 places, 828 transitions, 19887 flow, removed 67 selfloop flow, removed 14 redundant places. [2022-01-19 00:43:07,584 INFO L242 Difference]: Finished difference. Result has 953 places, 740 transitions, 17116 flow [2022-01-19 00:43:07,584 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16616, PETRI_DIFFERENCE_MINUEND_PLACES=910, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=736, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=550, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17116, PETRI_PLACES=953, PETRI_TRANSITIONS=740} [2022-01-19 00:43:07,584 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 766 predicate places. [2022-01-19 00:43:07,584 INFO L470 AbstractCegarLoop]: Abstraction has has 953 places, 740 transitions, 17116 flow [2022-01-19 00:43:07,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:07,585 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:43:07,585 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:43:07,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2022-01-19 00:43:07,585 INFO L402 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:43:07,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:43:07,585 INFO L85 PathProgramCache]: Analyzing trace with hash -689926010, now seen corresponding path program 188 times [2022-01-19 00:43:07,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:43:07,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059538442] [2022-01-19 00:43:07,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:43:07,585 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:43:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:43:07,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:43:07,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:43:07,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059538442] [2022-01-19 00:43:07,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059538442] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:43:07,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:43:07,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:43:07,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605906201] [2022-01-19 00:43:07,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:43:07,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:43:07,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:43:07,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:43:07,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:43:07,684 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:43:07,685 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 953 places, 740 transitions, 17116 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:07,685 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:43:07,685 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:43:07,685 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:43:09,471 INFO L129 PetriNetUnfolder]: 901/3166 cut-off events. [2022-01-19 00:43:09,471 INFO L130 PetriNetUnfolder]: For 114046/114059 co-relation queries the response was YES. [2022-01-19 00:43:09,555 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25240 conditions, 3166 events. 901/3166 cut-off events. For 114046/114059 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 25646 event pairs, 390 based on Foata normal form. 1/3065 useless extension candidates. Maximal degree in co-relation 24878. Up to 870 conditions per place. [2022-01-19 00:43:09,568 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 408 selfloop transitions, 212 changer transitions 73/834 dead transitions. [2022-01-19 00:43:09,568 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 975 places, 834 transitions, 20580 flow [2022-01-19 00:43:09,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:43:09,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:43:09,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6073 transitions. [2022-01-19 00:43:09,571 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7610275689223057 [2022-01-19 00:43:09,571 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6073 transitions. [2022-01-19 00:43:09,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6073 transitions. [2022-01-19 00:43:09,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:43:09,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6073 transitions. [2022-01-19 00:43:09,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.81578947368422) internal successors, (6073), 38 states have internal predecessors, (6073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:09,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:09,583 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:09,583 INFO L186 Difference]: Start difference. First operand has 953 places, 740 transitions, 17116 flow. Second operand 38 states and 6073 transitions. [2022-01-19 00:43:09,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 975 places, 834 transitions, 20580 flow [2022-01-19 00:43:10,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 960 places, 834 transitions, 20174 flow, removed 60 selfloop flow, removed 15 redundant places. [2022-01-19 00:43:10,703 INFO L242 Difference]: Finished difference. Result has 977 places, 735 transitions, 17150 flow [2022-01-19 00:43:10,703 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16767, PETRI_DIFFERENCE_MINUEND_PLACES=923, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=17150, PETRI_PLACES=977, PETRI_TRANSITIONS=735} [2022-01-19 00:43:10,703 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 790 predicate places. [2022-01-19 00:43:10,703 INFO L470 AbstractCegarLoop]: Abstraction has has 977 places, 735 transitions, 17150 flow [2022-01-19 00:43:10,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:10,704 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:43:10,704 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:43:10,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2022-01-19 00:43:10,704 INFO L402 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:43:10,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:43:10,704 INFO L85 PathProgramCache]: Analyzing trace with hash -572136264, now seen corresponding path program 189 times [2022-01-19 00:43:10,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:43:10,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948738235] [2022-01-19 00:43:10,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:43:10,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:43:10,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:43:10,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:43:10,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:43:10,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948738235] [2022-01-19 00:43:10,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948738235] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:43:10,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:43:10,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:43:10,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847444640] [2022-01-19 00:43:10,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:43:10,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:43:10,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:43:10,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:43:10,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:43:10,798 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:43:10,799 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 977 places, 735 transitions, 17150 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:10,799 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:43:10,799 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:43:10,799 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:43:12,324 INFO L129 PetriNetUnfolder]: 878/3089 cut-off events. [2022-01-19 00:43:12,324 INFO L130 PetriNetUnfolder]: For 114174/114187 co-relation queries the response was YES. [2022-01-19 00:43:12,404 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24622 conditions, 3089 events. 878/3089 cut-off events. For 114174/114187 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 24764 event pairs, 388 based on Foata normal form. 1/2990 useless extension candidates. Maximal degree in co-relation 24254. Up to 870 conditions per place. [2022-01-19 00:43:12,415 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 399 selfloop transitions, 194 changer transitions 62/796 dead transitions. [2022-01-19 00:43:12,416 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 980 places, 796 transitions, 19663 flow [2022-01-19 00:43:12,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 00:43:12,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 00:43:12,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4492 transitions. [2022-01-19 00:43:12,418 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7639455782312925 [2022-01-19 00:43:12,418 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4492 transitions. [2022-01-19 00:43:12,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4492 transitions. [2022-01-19 00:43:12,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:43:12,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4492 transitions. [2022-01-19 00:43:12,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.42857142857142) internal successors, (4492), 28 states have internal predecessors, (4492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:12,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:12,423 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:12,423 INFO L186 Difference]: Start difference. First operand has 977 places, 735 transitions, 17150 flow. Second operand 28 states and 4492 transitions. [2022-01-19 00:43:12,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 980 places, 796 transitions, 19663 flow [2022-01-19 00:43:13,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 953 places, 796 transitions, 19185 flow, removed 58 selfloop flow, removed 27 redundant places. [2022-01-19 00:43:13,523 INFO L242 Difference]: Finished difference. Result has 962 places, 710 transitions, 16393 flow [2022-01-19 00:43:13,523 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16713, PETRI_DIFFERENCE_MINUEND_PLACES=926, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=16393, PETRI_PLACES=962, PETRI_TRANSITIONS=710} [2022-01-19 00:43:13,523 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 775 predicate places. [2022-01-19 00:43:13,523 INFO L470 AbstractCegarLoop]: Abstraction has has 962 places, 710 transitions, 16393 flow [2022-01-19 00:43:13,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:13,524 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:43:13,524 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:43:13,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2022-01-19 00:43:13,524 INFO L402 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:43:13,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:43:13,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1619313512, now seen corresponding path program 190 times [2022-01-19 00:43:13,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:43:13,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048438345] [2022-01-19 00:43:13,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:43:13,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:43:13,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:43:13,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:43:13,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:43:13,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048438345] [2022-01-19 00:43:13,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048438345] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:43:13,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:43:13,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:43:13,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694625846] [2022-01-19 00:43:13,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:43:13,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:43:13,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:43:13,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:43:13,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:43:13,624 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:43:13,625 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 962 places, 710 transitions, 16393 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:13,625 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:43:13,625 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:43:13,625 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:43:15,265 INFO L129 PetriNetUnfolder]: 871/3067 cut-off events. [2022-01-19 00:43:15,265 INFO L130 PetriNetUnfolder]: For 108573/108586 co-relation queries the response was YES. [2022-01-19 00:43:15,327 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24362 conditions, 3067 events. 871/3067 cut-off events. For 108573/108586 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 24532 event pairs, 393 based on Foata normal form. 1/2968 useless extension candidates. Maximal degree in co-relation 24007. Up to 870 conditions per place. [2022-01-19 00:43:15,337 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 418 selfloop transitions, 162 changer transitions 60/781 dead transitions. [2022-01-19 00:43:15,338 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 958 places, 781 transitions, 19231 flow [2022-01-19 00:43:15,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:43:15,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:43:15,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4809 transitions. [2022-01-19 00:43:15,340 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7633333333333333 [2022-01-19 00:43:15,340 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4809 transitions. [2022-01-19 00:43:15,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4809 transitions. [2022-01-19 00:43:15,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:43:15,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4809 transitions. [2022-01-19 00:43:15,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.3) internal successors, (4809), 30 states have internal predecessors, (4809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:15,346 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:15,346 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:15,346 INFO L186 Difference]: Start difference. First operand has 962 places, 710 transitions, 16393 flow. Second operand 30 states and 4809 transitions. [2022-01-19 00:43:15,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 958 places, 781 transitions, 19231 flow [2022-01-19 00:43:16,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 921 places, 781 transitions, 18142 flow, removed 33 selfloop flow, removed 37 redundant places. [2022-01-19 00:43:16,343 INFO L242 Difference]: Finished difference. Result has 933 places, 697 transitions, 15478 flow [2022-01-19 00:43:16,344 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15417, PETRI_DIFFERENCE_MINUEND_PLACES=892, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=15478, PETRI_PLACES=933, PETRI_TRANSITIONS=697} [2022-01-19 00:43:16,344 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 746 predicate places. [2022-01-19 00:43:16,344 INFO L470 AbstractCegarLoop]: Abstraction has has 933 places, 697 transitions, 15478 flow [2022-01-19 00:43:16,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:16,344 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:43:16,344 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:43:16,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2022-01-19 00:43:16,344 INFO L402 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:43:16,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:43:16,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1415123752, now seen corresponding path program 191 times [2022-01-19 00:43:16,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:43:16,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608481661] [2022-01-19 00:43:16,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:43:16,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:43:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:43:16,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:43:16,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:43:16,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608481661] [2022-01-19 00:43:16,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608481661] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:43:16,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:43:16,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:43:16,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279559315] [2022-01-19 00:43:16,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:43:16,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:43:16,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:43:16,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:43:16,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:43:16,439 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:43:16,439 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 933 places, 697 transitions, 15478 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:16,440 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:43:16,440 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:43:16,440 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:43:17,887 INFO L129 PetriNetUnfolder]: 846/2985 cut-off events. [2022-01-19 00:43:17,888 INFO L130 PetriNetUnfolder]: For 100417/100430 co-relation queries the response was YES. [2022-01-19 00:43:17,961 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23066 conditions, 2985 events. 846/2985 cut-off events. For 100417/100430 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 23641 event pairs, 387 based on Foata normal form. 1/2887 useless extension candidates. Maximal degree in co-relation 22721. Up to 864 conditions per place. [2022-01-19 00:43:17,972 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 402 selfloop transitions, 140 changer transitions 62/745 dead transitions. [2022-01-19 00:43:17,972 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 934 places, 745 transitions, 17445 flow [2022-01-19 00:43:17,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:43:17,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:43:17,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4643 transitions. [2022-01-19 00:43:17,974 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7623973727422003 [2022-01-19 00:43:17,974 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4643 transitions. [2022-01-19 00:43:17,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4643 transitions. [2022-01-19 00:43:17,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:43:17,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4643 transitions. [2022-01-19 00:43:17,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.10344827586206) internal successors, (4643), 29 states have internal predecessors, (4643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:17,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:17,980 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:17,980 INFO L186 Difference]: Start difference. First operand has 933 places, 697 transitions, 15478 flow. Second operand 29 states and 4643 transitions. [2022-01-19 00:43:17,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 934 places, 745 transitions, 17445 flow [2022-01-19 00:43:18,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 903 places, 745 transitions, 16940 flow, removed 28 selfloop flow, removed 31 redundant places. [2022-01-19 00:43:18,900 INFO L242 Difference]: Finished difference. Result has 910 places, 659 transitions, 14269 flow [2022-01-19 00:43:18,900 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15010, PETRI_DIFFERENCE_MINUEND_PLACES=875, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=14269, PETRI_PLACES=910, PETRI_TRANSITIONS=659} [2022-01-19 00:43:18,900 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 723 predicate places. [2022-01-19 00:43:18,901 INFO L470 AbstractCegarLoop]: Abstraction has has 910 places, 659 transitions, 14269 flow [2022-01-19 00:43:18,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:18,901 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:43:18,901 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:43:18,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2022-01-19 00:43:18,901 INFO L402 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:43:18,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:43:18,901 INFO L85 PathProgramCache]: Analyzing trace with hash 721873112, now seen corresponding path program 192 times [2022-01-19 00:43:18,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:43:18,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625311137] [2022-01-19 00:43:18,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:43:18,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:43:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:43:19,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:43:19,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:43:19,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625311137] [2022-01-19 00:43:19,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625311137] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:43:19,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:43:19,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:43:19,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642716597] [2022-01-19 00:43:19,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:43:19,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:43:19,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:43:19,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:43:19,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:43:19,015 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:43:19,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 910 places, 659 transitions, 14269 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:19,016 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:43:19,016 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:43:19,016 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:43:20,582 INFO L129 PetriNetUnfolder]: 884/3087 cut-off events. [2022-01-19 00:43:20,582 INFO L130 PetriNetUnfolder]: For 100641/100654 co-relation queries the response was YES. [2022-01-19 00:43:20,649 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23977 conditions, 3087 events. 884/3087 cut-off events. For 100641/100654 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 24700 event pairs, 335 based on Foata normal form. 1/2998 useless extension candidates. Maximal degree in co-relation 23645. Up to 864 conditions per place. [2022-01-19 00:43:20,660 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 336 selfloop transitions, 282 changer transitions 76/835 dead transitions. [2022-01-19 00:43:20,660 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 903 places, 835 transitions, 20379 flow [2022-01-19 00:43:20,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:43:20,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:43:20,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6080 transitions. [2022-01-19 00:43:20,663 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2022-01-19 00:43:20,663 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6080 transitions. [2022-01-19 00:43:20,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6080 transitions. [2022-01-19 00:43:20,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:43:20,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6080 transitions. [2022-01-19 00:43:20,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.0) internal successors, (6080), 38 states have internal predecessors, (6080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:20,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:20,670 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:20,670 INFO L186 Difference]: Start difference. First operand has 910 places, 659 transitions, 14269 flow. Second operand 38 states and 6080 transitions. [2022-01-19 00:43:20,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 903 places, 835 transitions, 20379 flow [2022-01-19 00:43:21,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 867 places, 835 transitions, 19582 flow, removed 28 selfloop flow, removed 36 redundant places. [2022-01-19 00:43:21,621 INFO L242 Difference]: Finished difference. Result has 892 places, 683 transitions, 15049 flow [2022-01-19 00:43:21,621 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13579, PETRI_DIFFERENCE_MINUEND_PLACES=830, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=260, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=15049, PETRI_PLACES=892, PETRI_TRANSITIONS=683} [2022-01-19 00:43:21,622 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 705 predicate places. [2022-01-19 00:43:21,622 INFO L470 AbstractCegarLoop]: Abstraction has has 892 places, 683 transitions, 15049 flow [2022-01-19 00:43:21,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:21,622 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:43:21,622 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:43:21,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2022-01-19 00:43:21,622 INFO L402 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:43:21,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:43:21,622 INFO L85 PathProgramCache]: Analyzing trace with hash 581310738, now seen corresponding path program 193 times [2022-01-19 00:43:21,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:43:21,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135307307] [2022-01-19 00:43:21,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:43:21,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:43:21,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:43:21,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:43:21,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:43:21,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135307307] [2022-01-19 00:43:21,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135307307] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:43:21,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:43:21,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:43:21,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778788173] [2022-01-19 00:43:21,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:43:21,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:43:21,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:43:21,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:43:21,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:43:21,724 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:43:21,725 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 892 places, 683 transitions, 15049 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:21,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:43:21,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:43:21,725 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:43:23,228 INFO L129 PetriNetUnfolder]: 886/3095 cut-off events. [2022-01-19 00:43:23,228 INFO L130 PetriNetUnfolder]: For 103717/103730 co-relation queries the response was YES. [2022-01-19 00:43:23,302 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24195 conditions, 3095 events. 886/3095 cut-off events. For 103717/103730 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 24718 event pairs, 398 based on Foata normal form. 1/2994 useless extension candidates. Maximal degree in co-relation 23861. Up to 864 conditions per place. [2022-01-19 00:43:23,313 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 408 selfloop transitions, 174 changer transitions 54/777 dead transitions. [2022-01-19 00:43:23,313 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 896 places, 777 transitions, 18641 flow [2022-01-19 00:43:23,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:43:23,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:43:23,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4671 transitions. [2022-01-19 00:43:23,316 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7669950738916256 [2022-01-19 00:43:23,316 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4671 transitions. [2022-01-19 00:43:23,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4671 transitions. [2022-01-19 00:43:23,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:43:23,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4671 transitions. [2022-01-19 00:43:23,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 161.06896551724137) internal successors, (4671), 29 states have internal predecessors, (4671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:23,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:23,321 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:23,321 INFO L186 Difference]: Start difference. First operand has 892 places, 683 transitions, 15049 flow. Second operand 29 states and 4671 transitions. [2022-01-19 00:43:23,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 896 places, 777 transitions, 18641 flow [2022-01-19 00:43:24,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 878 places, 777 transitions, 18439 flow, removed 72 selfloop flow, removed 18 redundant places. [2022-01-19 00:43:24,245 INFO L242 Difference]: Finished difference. Result has 892 places, 695 transitions, 15637 flow [2022-01-19 00:43:24,245 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14880, PETRI_DIFFERENCE_MINUEND_PLACES=850, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=15637, PETRI_PLACES=892, PETRI_TRANSITIONS=695} [2022-01-19 00:43:24,245 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 705 predicate places. [2022-01-19 00:43:24,245 INFO L470 AbstractCegarLoop]: Abstraction has has 892 places, 695 transitions, 15637 flow [2022-01-19 00:43:24,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:24,246 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:43:24,246 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:43:24,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2022-01-19 00:43:24,246 INFO L402 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:43:24,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:43:24,246 INFO L85 PathProgramCache]: Analyzing trace with hash 773425324, now seen corresponding path program 194 times [2022-01-19 00:43:24,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:43:24,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780210578] [2022-01-19 00:43:24,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:43:24,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:43:24,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:43:24,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:43:24,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:43:24,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780210578] [2022-01-19 00:43:24,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780210578] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:43:24,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:43:24,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:43:24,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584485626] [2022-01-19 00:43:24,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:43:24,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:43:24,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:43:24,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:43:24,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:43:24,361 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:43:24,362 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 892 places, 695 transitions, 15637 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:24,362 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:43:24,362 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:43:24,362 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:43:25,822 INFO L129 PetriNetUnfolder]: 884/3098 cut-off events. [2022-01-19 00:43:25,822 INFO L130 PetriNetUnfolder]: For 107923/107936 co-relation queries the response was YES. [2022-01-19 00:43:25,894 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24436 conditions, 3098 events. 884/3098 cut-off events. For 107923/107936 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 24849 event pairs, 381 based on Foata normal form. 1/2998 useless extension candidates. Maximal degree in co-relation 24105. Up to 865 conditions per place. [2022-01-19 00:43:25,906 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 444 selfloop transitions, 144 changer transitions 57/786 dead transitions. [2022-01-19 00:43:25,906 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 905 places, 786 transitions, 19367 flow [2022-01-19 00:43:25,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 00:43:25,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 00:43:25,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4518 transitions. [2022-01-19 00:43:25,908 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7683673469387755 [2022-01-19 00:43:25,908 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4518 transitions. [2022-01-19 00:43:25,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4518 transitions. [2022-01-19 00:43:25,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:43:25,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4518 transitions. [2022-01-19 00:43:25,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 161.35714285714286) internal successors, (4518), 28 states have internal predecessors, (4518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:25,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:25,914 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:25,914 INFO L186 Difference]: Start difference. First operand has 892 places, 695 transitions, 15637 flow. Second operand 28 states and 4518 transitions. [2022-01-19 00:43:25,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 905 places, 786 transitions, 19367 flow [2022-01-19 00:43:26,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 892 places, 786 transitions, 18946 flow, removed 95 selfloop flow, removed 13 redundant places. [2022-01-19 00:43:26,870 INFO L242 Difference]: Finished difference. Result has 904 places, 703 transitions, 15859 flow [2022-01-19 00:43:26,871 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15260, PETRI_DIFFERENCE_MINUEND_PLACES=865, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=556, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=15859, PETRI_PLACES=904, PETRI_TRANSITIONS=703} [2022-01-19 00:43:26,871 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 717 predicate places. [2022-01-19 00:43:26,871 INFO L470 AbstractCegarLoop]: Abstraction has has 904 places, 703 transitions, 15859 flow [2022-01-19 00:43:26,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:26,871 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:43:26,871 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:43:26,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2022-01-19 00:43:26,872 INFO L402 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:43:26,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:43:26,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1767172388, now seen corresponding path program 195 times [2022-01-19 00:43:26,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:43:26,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939718375] [2022-01-19 00:43:26,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:43:26,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:43:26,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:43:26,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:43:26,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:43:26,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939718375] [2022-01-19 00:43:26,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939718375] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:43:26,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:43:26,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:43:26,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291637312] [2022-01-19 00:43:26,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:43:26,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:43:26,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:43:26,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:43:26,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:43:26,975 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:43:26,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 904 places, 703 transitions, 15859 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:26,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:43:26,976 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:43:26,976 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:43:28,467 INFO L129 PetriNetUnfolder]: 862/3022 cut-off events. [2022-01-19 00:43:28,467 INFO L130 PetriNetUnfolder]: For 105669/105682 co-relation queries the response was YES. [2022-01-19 00:43:28,638 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23844 conditions, 3022 events. 862/3022 cut-off events. For 105669/105682 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 23997 event pairs, 366 based on Foata normal form. 1/2922 useless extension candidates. Maximal degree in co-relation 23509. Up to 859 conditions per place. [2022-01-19 00:43:28,649 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 438 selfloop transitions, 126 changer transitions 60/765 dead transitions. [2022-01-19 00:43:28,649 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 920 places, 765 transitions, 18880 flow [2022-01-19 00:43:28,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:43:28,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:43:28,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4820 transitions. [2022-01-19 00:43:28,651 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.765079365079365 [2022-01-19 00:43:28,651 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4820 transitions. [2022-01-19 00:43:28,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4820 transitions. [2022-01-19 00:43:28,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:43:28,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4820 transitions. [2022-01-19 00:43:28,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.66666666666666) internal successors, (4820), 30 states have internal predecessors, (4820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:28,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:28,657 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:28,657 INFO L186 Difference]: Start difference. First operand has 904 places, 703 transitions, 15859 flow. Second operand 30 states and 4820 transitions. [2022-01-19 00:43:28,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 920 places, 765 transitions, 18880 flow [2022-01-19 00:43:29,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 903 places, 765 transitions, 18339 flow, removed 104 selfloop flow, removed 17 redundant places. [2022-01-19 00:43:29,582 INFO L242 Difference]: Finished difference. Result has 914 places, 680 transitions, 15047 flow [2022-01-19 00:43:29,583 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15392, PETRI_DIFFERENCE_MINUEND_PLACES=874, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=577, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=15047, PETRI_PLACES=914, PETRI_TRANSITIONS=680} [2022-01-19 00:43:29,583 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 727 predicate places. [2022-01-19 00:43:29,583 INFO L470 AbstractCegarLoop]: Abstraction has has 914 places, 680 transitions, 15047 flow [2022-01-19 00:43:29,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:29,583 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:43:29,583 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:43:29,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2022-01-19 00:43:29,583 INFO L402 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:43:29,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:43:29,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1904133590, now seen corresponding path program 196 times [2022-01-19 00:43:29,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:43:29,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526318153] [2022-01-19 00:43:29,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:43:29,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:43:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:43:29,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:43:29,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:43:29,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526318153] [2022-01-19 00:43:29,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526318153] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:43:29,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:43:29,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:43:29,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633854973] [2022-01-19 00:43:29,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:43:29,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:43:29,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:43:29,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:43:29,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:43:29,685 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:43:29,686 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 914 places, 680 transitions, 15047 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:29,686 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:43:29,686 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:43:29,686 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:43:31,193 INFO L129 PetriNetUnfolder]: 868/3042 cut-off events. [2022-01-19 00:43:31,193 INFO L130 PetriNetUnfolder]: For 102835/102848 co-relation queries the response was YES. [2022-01-19 00:43:31,265 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24205 conditions, 3042 events. 868/3042 cut-off events. For 102835/102848 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 24328 event pairs, 370 based on Foata normal form. 1/2941 useless extension candidates. Maximal degree in co-relation 23869. Up to 860 conditions per place. [2022-01-19 00:43:31,276 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 440 selfloop transitions, 140 changer transitions 55/776 dead transitions. [2022-01-19 00:43:31,276 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 907 places, 776 transitions, 19178 flow [2022-01-19 00:43:31,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:43:31,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:43:31,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4675 transitions. [2022-01-19 00:43:31,278 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7676518883415435 [2022-01-19 00:43:31,279 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4675 transitions. [2022-01-19 00:43:31,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4675 transitions. [2022-01-19 00:43:31,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:43:31,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4675 transitions. [2022-01-19 00:43:31,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 161.20689655172413) internal successors, (4675), 29 states have internal predecessors, (4675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:31,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:31,284 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:31,284 INFO L186 Difference]: Start difference. First operand has 914 places, 680 transitions, 15047 flow. Second operand 29 states and 4675 transitions. [2022-01-19 00:43:31,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 907 places, 776 transitions, 19178 flow [2022-01-19 00:43:32,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 877 places, 776 transitions, 18470 flow, removed 106 selfloop flow, removed 30 redundant places. [2022-01-19 00:43:32,218 INFO L242 Difference]: Finished difference. Result has 891 places, 697 transitions, 15543 flow [2022-01-19 00:43:32,218 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14601, PETRI_DIFFERENCE_MINUEND_PLACES=849, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=680, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=548, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=15543, PETRI_PLACES=891, PETRI_TRANSITIONS=697} [2022-01-19 00:43:32,218 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 704 predicate places. [2022-01-19 00:43:32,218 INFO L470 AbstractCegarLoop]: Abstraction has has 891 places, 697 transitions, 15543 flow [2022-01-19 00:43:32,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:32,218 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:43:32,219 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:43:32,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2022-01-19 00:43:32,219 INFO L402 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:43:32,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:43:32,219 INFO L85 PathProgramCache]: Analyzing trace with hash -761768068, now seen corresponding path program 197 times [2022-01-19 00:43:32,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:43:32,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297485821] [2022-01-19 00:43:32,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:43:32,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:43:32,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:43:32,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:43:32,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:43:32,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297485821] [2022-01-19 00:43:32,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297485821] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:43:32,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:43:32,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:43:32,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075023479] [2022-01-19 00:43:32,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:43:32,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:43:32,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:43:32,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:43:32,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:43:32,324 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:43:32,325 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 891 places, 697 transitions, 15543 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:32,325 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:43:32,325 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:43:32,325 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:43:33,847 INFO L129 PetriNetUnfolder]: 862/3044 cut-off events. [2022-01-19 00:43:33,848 INFO L130 PetriNetUnfolder]: For 101648/101661 co-relation queries the response was YES. [2022-01-19 00:43:33,912 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23624 conditions, 3044 events. 862/3044 cut-off events. For 101648/101661 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 24391 event pairs, 336 based on Foata normal form. 1/2948 useless extension candidates. Maximal degree in co-relation 23293. Up to 861 conditions per place. [2022-01-19 00:43:33,924 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 419 selfloop transitions, 171 changer transitions 58/789 dead transitions. [2022-01-19 00:43:33,925 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 903 places, 789 transitions, 19261 flow [2022-01-19 00:43:33,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 00:43:33,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 00:43:33,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4351 transitions. [2022-01-19 00:43:33,927 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7673721340388007 [2022-01-19 00:43:33,927 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4351 transitions. [2022-01-19 00:43:33,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4351 transitions. [2022-01-19 00:43:33,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:43:33,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4351 transitions. [2022-01-19 00:43:33,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 161.14814814814815) internal successors, (4351), 27 states have internal predecessors, (4351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:33,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:33,932 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:33,932 INFO L186 Difference]: Start difference. First operand has 891 places, 697 transitions, 15543 flow. Second operand 27 states and 4351 transitions. [2022-01-19 00:43:33,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 903 places, 789 transitions, 19261 flow [2022-01-19 00:43:34,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 890 places, 789 transitions, 18693 flow, removed 195 selfloop flow, removed 13 redundant places. [2022-01-19 00:43:34,854 INFO L242 Difference]: Finished difference. Result has 900 places, 701 transitions, 15667 flow [2022-01-19 00:43:34,854 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15146, PETRI_DIFFERENCE_MINUEND_PLACES=864, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=15667, PETRI_PLACES=900, PETRI_TRANSITIONS=701} [2022-01-19 00:43:34,854 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 713 predicate places. [2022-01-19 00:43:34,854 INFO L470 AbstractCegarLoop]: Abstraction has has 900 places, 701 transitions, 15667 flow [2022-01-19 00:43:34,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:34,855 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:43:34,855 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:43:34,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2022-01-19 00:43:34,855 INFO L402 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:43:34,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:43:34,855 INFO L85 PathProgramCache]: Analyzing trace with hash 2104717412, now seen corresponding path program 198 times [2022-01-19 00:43:34,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:43:34,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275329388] [2022-01-19 00:43:34,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:43:34,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:43:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:43:34,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:43:34,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:43:34,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275329388] [2022-01-19 00:43:34,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275329388] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:43:34,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:43:34,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:43:34,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974400384] [2022-01-19 00:43:34,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:43:34,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:43:34,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:43:34,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:43:34,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:43:34,962 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:43:34,962 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 900 places, 701 transitions, 15667 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:34,963 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:43:34,963 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:43:34,963 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:43:36,482 INFO L129 PetriNetUnfolder]: 860/3032 cut-off events. [2022-01-19 00:43:36,482 INFO L130 PetriNetUnfolder]: For 97572/97585 co-relation queries the response was YES. [2022-01-19 00:43:36,554 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23576 conditions, 3032 events. 860/3032 cut-off events. For 97572/97585 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 24189 event pairs, 383 based on Foata normal form. 1/2929 useless extension candidates. Maximal degree in co-relation 23243. Up to 858 conditions per place. [2022-01-19 00:43:36,565 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 448 selfloop transitions, 142 changer transitions 55/786 dead transitions. [2022-01-19 00:43:36,565 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 917 places, 786 transitions, 19254 flow [2022-01-19 00:43:36,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:43:36,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:43:36,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4831 transitions. [2022-01-19 00:43:36,568 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7668253968253969 [2022-01-19 00:43:36,568 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4831 transitions. [2022-01-19 00:43:36,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4831 transitions. [2022-01-19 00:43:36,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:43:36,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4831 transitions. [2022-01-19 00:43:36,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 161.03333333333333) internal successors, (4831), 30 states have internal predecessors, (4831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:36,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:36,574 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:36,574 INFO L186 Difference]: Start difference. First operand has 900 places, 701 transitions, 15667 flow. Second operand 30 states and 4831 transitions. [2022-01-19 00:43:36,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 917 places, 786 transitions, 19254 flow [2022-01-19 00:43:37,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 898 places, 786 transitions, 18662 flow, removed 93 selfloop flow, removed 19 redundant places. [2022-01-19 00:43:37,476 INFO L242 Difference]: Finished difference. Result has 911 places, 709 transitions, 15706 flow [2022-01-19 00:43:37,477 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15150, PETRI_DIFFERENCE_MINUEND_PLACES=869, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=563, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=15706, PETRI_PLACES=911, PETRI_TRANSITIONS=709} [2022-01-19 00:43:37,477 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 724 predicate places. [2022-01-19 00:43:37,477 INFO L470 AbstractCegarLoop]: Abstraction has has 911 places, 709 transitions, 15706 flow [2022-01-19 00:43:37,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:37,477 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:43:37,478 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:43:37,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2022-01-19 00:43:37,478 INFO L402 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:43:37,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:43:37,478 INFO L85 PathProgramCache]: Analyzing trace with hash 264895692, now seen corresponding path program 199 times [2022-01-19 00:43:37,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:43:37,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703963292] [2022-01-19 00:43:37,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:43:37,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:43:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:43:37,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:43:37,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:43:37,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703963292] [2022-01-19 00:43:37,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703963292] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:43:37,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:43:37,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:43:37,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59699988] [2022-01-19 00:43:37,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:43:37,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:43:37,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:43:37,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:43:37,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:43:37,580 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:43:37,580 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 911 places, 709 transitions, 15706 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:37,580 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:43:37,580 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:43:37,580 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:43:39,001 INFO L129 PetriNetUnfolder]: 830/2949 cut-off events. [2022-01-19 00:43:39,001 INFO L130 PetriNetUnfolder]: For 91758/91771 co-relation queries the response was YES. [2022-01-19 00:43:39,069 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22394 conditions, 2949 events. 830/2949 cut-off events. For 91758/91771 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 23355 event pairs, 335 based on Foata normal form. 1/2851 useless extension candidates. Maximal degree in co-relation 22058. Up to 851 conditions per place. [2022-01-19 00:43:39,080 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 414 selfloop transitions, 150 changer transitions 62/767 dead transitions. [2022-01-19 00:43:39,080 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 925 places, 767 transitions, 18465 flow [2022-01-19 00:43:39,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:43:39,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:43:39,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4809 transitions. [2022-01-19 00:43:39,082 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7633333333333333 [2022-01-19 00:43:39,082 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4809 transitions. [2022-01-19 00:43:39,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4809 transitions. [2022-01-19 00:43:39,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:43:39,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4809 transitions. [2022-01-19 00:43:39,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.3) internal successors, (4809), 30 states have internal predecessors, (4809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:39,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:39,088 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:39,088 INFO L186 Difference]: Start difference. First operand has 911 places, 709 transitions, 15706 flow. Second operand 30 states and 4809 transitions. [2022-01-19 00:43:39,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 925 places, 767 transitions, 18465 flow [2022-01-19 00:43:39,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 911 places, 767 transitions, 18060 flow, removed 121 selfloop flow, removed 14 redundant places. [2022-01-19 00:43:39,963 INFO L242 Difference]: Finished difference. Result has 922 places, 678 transitions, 14855 flow [2022-01-19 00:43:39,964 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15412, PETRI_DIFFERENCE_MINUEND_PLACES=882, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=709, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=559, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=14855, PETRI_PLACES=922, PETRI_TRANSITIONS=678} [2022-01-19 00:43:39,964 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 735 predicate places. [2022-01-19 00:43:39,964 INFO L470 AbstractCegarLoop]: Abstraction has has 922 places, 678 transitions, 14855 flow [2022-01-19 00:43:39,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:39,964 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:43:39,964 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:43:39,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2022-01-19 00:43:39,964 INFO L402 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:43:39,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:43:39,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1294553486, now seen corresponding path program 200 times [2022-01-19 00:43:39,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:43:39,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140105837] [2022-01-19 00:43:39,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:43:39,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:43:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:43:40,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:43:40,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:43:40,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140105837] [2022-01-19 00:43:40,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140105837] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:43:40,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:43:40,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:43:40,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194830524] [2022-01-19 00:43:40,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:43:40,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:43:40,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:43:40,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:43:40,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:43:40,061 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:43:40,062 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 922 places, 678 transitions, 14855 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:40,062 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:43:40,062 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:43:40,062 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:43:41,705 INFO L129 PetriNetUnfolder]: 868/3070 cut-off events. [2022-01-19 00:43:41,705 INFO L130 PetriNetUnfolder]: For 94489/94502 co-relation queries the response was YES. [2022-01-19 00:43:41,780 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23563 conditions, 3070 events. 868/3070 cut-off events. For 94489/94502 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 24687 event pairs, 373 based on Foata normal form. 1/2970 useless extension candidates. Maximal degree in co-relation 23226. Up to 851 conditions per place. [2022-01-19 00:43:41,792 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 365 selfloop transitions, 235 changer transitions 77/818 dead transitions. [2022-01-19 00:43:41,792 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 925 places, 818 transitions, 19878 flow [2022-01-19 00:43:41,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 00:43:41,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 00:43:41,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7187 transitions. [2022-01-19 00:43:41,795 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7605291005291005 [2022-01-19 00:43:41,795 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7187 transitions. [2022-01-19 00:43:41,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7187 transitions. [2022-01-19 00:43:41,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:43:41,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7187 transitions. [2022-01-19 00:43:41,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.7111111111111) internal successors, (7187), 45 states have internal predecessors, (7187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:41,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:41,804 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:41,804 INFO L186 Difference]: Start difference. First operand has 922 places, 678 transitions, 14855 flow. Second operand 45 states and 7187 transitions. [2022-01-19 00:43:41,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 925 places, 818 transitions, 19878 flow [2022-01-19 00:43:42,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 891 places, 818 transitions, 18936 flow, removed 43 selfloop flow, removed 34 redundant places. [2022-01-19 00:43:42,738 INFO L242 Difference]: Finished difference. Result has 925 places, 703 transitions, 15578 flow [2022-01-19 00:43:42,738 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14176, PETRI_DIFFERENCE_MINUEND_PLACES=847, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=15578, PETRI_PLACES=925, PETRI_TRANSITIONS=703} [2022-01-19 00:43:42,738 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 738 predicate places. [2022-01-19 00:43:42,738 INFO L470 AbstractCegarLoop]: Abstraction has has 925 places, 703 transitions, 15578 flow [2022-01-19 00:43:42,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:42,738 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:43:42,739 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:43:42,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2022-01-19 00:43:42,739 INFO L402 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:43:42,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:43:42,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1194645428, now seen corresponding path program 201 times [2022-01-19 00:43:42,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:43:42,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856270021] [2022-01-19 00:43:42,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:43:42,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:43:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:43:42,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:43:42,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:43:42,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856270021] [2022-01-19 00:43:42,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856270021] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:43:42,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:43:42,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:43:42,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987304542] [2022-01-19 00:43:42,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:43:42,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:43:42,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:43:42,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:43:42,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:43:42,838 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:43:42,839 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 925 places, 703 transitions, 15578 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:42,839 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:43:42,839 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:43:42,839 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:43:44,510 INFO L129 PetriNetUnfolder]: 893/3129 cut-off events. [2022-01-19 00:43:44,510 INFO L130 PetriNetUnfolder]: For 90641/90654 co-relation queries the response was YES. [2022-01-19 00:43:44,589 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24144 conditions, 3129 events. 893/3129 cut-off events. For 90641/90654 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 25222 event pairs, 373 based on Foata normal form. 1/3026 useless extension candidates. Maximal degree in co-relation 23795. Up to 851 conditions per place. [2022-01-19 00:43:44,601 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 450 selfloop transitions, 177 changer transitions 70/838 dead transitions. [2022-01-19 00:43:44,601 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 930 places, 838 transitions, 20372 flow [2022-01-19 00:43:44,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:43:44,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:43:44,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6090 transitions. [2022-01-19 00:43:44,604 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631578947368421 [2022-01-19 00:43:44,604 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6090 transitions. [2022-01-19 00:43:44,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6090 transitions. [2022-01-19 00:43:44,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:43:44,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6090 transitions. [2022-01-19 00:43:44,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.26315789473685) internal successors, (6090), 38 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:44,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:44,612 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:44,612 INFO L186 Difference]: Start difference. First operand has 925 places, 703 transitions, 15578 flow. Second operand 38 states and 6090 transitions. [2022-01-19 00:43:44,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 930 places, 838 transitions, 20372 flow [2022-01-19 00:43:45,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 900 places, 838 transitions, 19800 flow, removed 99 selfloop flow, removed 30 redundant places. [2022-01-19 00:43:45,526 INFO L242 Difference]: Finished difference. Result has 924 places, 728 transitions, 16515 flow [2022-01-19 00:43:45,527 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15128, PETRI_DIFFERENCE_MINUEND_PLACES=863, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=542, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=16515, PETRI_PLACES=924, PETRI_TRANSITIONS=728} [2022-01-19 00:43:45,527 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 737 predicate places. [2022-01-19 00:43:45,527 INFO L470 AbstractCegarLoop]: Abstraction has has 924 places, 728 transitions, 16515 flow [2022-01-19 00:43:45,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:45,528 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:43:45,528 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:43:45,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2022-01-19 00:43:45,528 INFO L402 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:43:45,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:43:45,528 INFO L85 PathProgramCache]: Analyzing trace with hash 973494486, now seen corresponding path program 202 times [2022-01-19 00:43:45,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:43:45,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290542666] [2022-01-19 00:43:45,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:43:45,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:43:45,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:43:45,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:43:45,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:43:45,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290542666] [2022-01-19 00:43:45,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290542666] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:43:45,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:43:45,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:43:45,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133640848] [2022-01-19 00:43:45,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:43:45,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:43:45,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:43:45,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:43:45,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:43:45,641 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:43:45,641 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 924 places, 728 transitions, 16515 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:45,641 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:43:45,641 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:43:45,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:43:47,360 INFO L129 PetriNetUnfolder]: 917/3203 cut-off events. [2022-01-19 00:43:47,360 INFO L130 PetriNetUnfolder]: For 89128/89141 co-relation queries the response was YES. [2022-01-19 00:43:47,432 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24880 conditions, 3203 events. 917/3203 cut-off events. For 89128/89141 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 26002 event pairs, 386 based on Foata normal form. 1/3098 useless extension candidates. Maximal degree in co-relation 24533. Up to 851 conditions per place. [2022-01-19 00:43:47,444 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 379 selfloop transitions, 258 changer transitions 66/844 dead transitions. [2022-01-19 00:43:47,444 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 937 places, 844 transitions, 20682 flow [2022-01-19 00:43:47,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:43:47,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:43:47,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6085 transitions. [2022-01-19 00:43:47,447 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625313283208021 [2022-01-19 00:43:47,447 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6085 transitions. [2022-01-19 00:43:47,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6085 transitions. [2022-01-19 00:43:47,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:43:47,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6085 transitions. [2022-01-19 00:43:47,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.1315789473684) internal successors, (6085), 38 states have internal predecessors, (6085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:47,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:47,455 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:47,455 INFO L186 Difference]: Start difference. First operand has 924 places, 728 transitions, 16515 flow. Second operand 38 states and 6085 transitions. [2022-01-19 00:43:47,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 937 places, 844 transitions, 20682 flow [2022-01-19 00:43:48,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 917 places, 844 transitions, 20279 flow, removed 105 selfloop flow, removed 20 redundant places. [2022-01-19 00:43:48,390 INFO L242 Difference]: Finished difference. Result has 941 places, 747 transitions, 17351 flow [2022-01-19 00:43:48,391 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16158, PETRI_DIFFERENCE_MINUEND_PLACES=880, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=728, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=17351, PETRI_PLACES=941, PETRI_TRANSITIONS=747} [2022-01-19 00:43:48,391 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 754 predicate places. [2022-01-19 00:43:48,391 INFO L470 AbstractCegarLoop]: Abstraction has has 941 places, 747 transitions, 17351 flow [2022-01-19 00:43:48,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:48,391 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:43:48,391 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:43:48,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2022-01-19 00:43:48,391 INFO L402 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:43:48,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:43:48,392 INFO L85 PathProgramCache]: Analyzing trace with hash -9369330, now seen corresponding path program 203 times [2022-01-19 00:43:48,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:43:48,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121441543] [2022-01-19 00:43:48,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:43:48,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:43:48,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:43:48,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:43:48,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:43:48,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121441543] [2022-01-19 00:43:48,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121441543] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:43:48,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:43:48,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:43:48,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159050754] [2022-01-19 00:43:48,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:43:48,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:43:48,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:43:48,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:43:48,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:43:48,488 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:43:48,489 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 941 places, 747 transitions, 17351 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:48,489 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:43:48,489 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:43:48,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:43:50,114 INFO L129 PetriNetUnfolder]: 918/3189 cut-off events. [2022-01-19 00:43:50,114 INFO L130 PetriNetUnfolder]: For 86450/86463 co-relation queries the response was YES. [2022-01-19 00:43:50,195 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24986 conditions, 3189 events. 918/3189 cut-off events. For 86450/86463 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 25860 event pairs, 372 based on Foata normal form. 1/3083 useless extension candidates. Maximal degree in co-relation 24632. Up to 852 conditions per place. [2022-01-19 00:43:50,207 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 373 selfloop transitions, 271 changer transitions 59/844 dead transitions. [2022-01-19 00:43:50,207 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 945 places, 844 transitions, 21058 flow [2022-01-19 00:43:50,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:43:50,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:43:50,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4663 transitions. [2022-01-19 00:43:50,210 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7656814449917898 [2022-01-19 00:43:50,210 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4663 transitions. [2022-01-19 00:43:50,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4663 transitions. [2022-01-19 00:43:50,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:43:50,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4663 transitions. [2022-01-19 00:43:50,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.79310344827587) internal successors, (4663), 29 states have internal predecessors, (4663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:50,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:50,216 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:50,216 INFO L186 Difference]: Start difference. First operand has 941 places, 747 transitions, 17351 flow. Second operand 29 states and 4663 transitions. [2022-01-19 00:43:50,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 945 places, 844 transitions, 21058 flow [2022-01-19 00:43:51,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 925 places, 844 transitions, 20632 flow, removed 101 selfloop flow, removed 20 redundant places. [2022-01-19 00:43:51,188 INFO L242 Difference]: Finished difference. Result has 939 places, 759 transitions, 17914 flow [2022-01-19 00:43:51,188 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17022, PETRI_DIFFERENCE_MINUEND_PLACES=897, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=259, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=17914, PETRI_PLACES=939, PETRI_TRANSITIONS=759} [2022-01-19 00:43:51,189 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 752 predicate places. [2022-01-19 00:43:51,189 INFO L470 AbstractCegarLoop]: Abstraction has has 939 places, 759 transitions, 17914 flow [2022-01-19 00:43:51,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:51,189 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:43:51,189 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:43:51,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2022-01-19 00:43:51,189 INFO L402 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:43:51,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:43:51,190 INFO L85 PathProgramCache]: Analyzing trace with hash -196555810, now seen corresponding path program 204 times [2022-01-19 00:43:51,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:43:51,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505622331] [2022-01-19 00:43:51,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:43:51,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:43:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:43:51,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:43:51,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:43:51,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505622331] [2022-01-19 00:43:51,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505622331] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:43:51,286 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:43:51,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:43:51,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676497489] [2022-01-19 00:43:51,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:43:51,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:43:51,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:43:51,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:43:51,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:43:51,288 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:43:51,289 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 939 places, 759 transitions, 17914 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:51,289 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:43:51,289 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:43:51,289 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:43:53,027 INFO L129 PetriNetUnfolder]: 952/3297 cut-off events. [2022-01-19 00:43:53,027 INFO L130 PetriNetUnfolder]: For 90391/90404 co-relation queries the response was YES. [2022-01-19 00:43:53,111 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26215 conditions, 3297 events. 952/3297 cut-off events. For 90391/90404 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 26912 event pairs, 369 based on Foata normal form. 1/3191 useless extension candidates. Maximal degree in co-relation 25864. Up to 853 conditions per place. [2022-01-19 00:43:53,125 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 480 selfloop transitions, 203 changer transitions 69/893 dead transitions. [2022-01-19 00:43:53,125 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 962 places, 893 transitions, 22945 flow [2022-01-19 00:43:53,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:43:53,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:43:53,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6088 transitions. [2022-01-19 00:43:53,128 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629072681704261 [2022-01-19 00:43:53,128 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6088 transitions. [2022-01-19 00:43:53,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6088 transitions. [2022-01-19 00:43:53,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:43:53,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6088 transitions. [2022-01-19 00:43:53,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.21052631578948) internal successors, (6088), 38 states have internal predecessors, (6088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:53,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:53,135 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:53,135 INFO L186 Difference]: Start difference. First operand has 939 places, 759 transitions, 17914 flow. Second operand 38 states and 6088 transitions. [2022-01-19 00:43:53,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 962 places, 893 transitions, 22945 flow [2022-01-19 00:43:54,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 949 places, 893 transitions, 22561 flow, removed 51 selfloop flow, removed 13 redundant places. [2022-01-19 00:43:54,173 INFO L242 Difference]: Finished difference. Result has 973 places, 784 transitions, 19069 flow [2022-01-19 00:43:54,174 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17584, PETRI_DIFFERENCE_MINUEND_PLACES=912, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=19069, PETRI_PLACES=973, PETRI_TRANSITIONS=784} [2022-01-19 00:43:54,174 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 786 predicate places. [2022-01-19 00:43:54,174 INFO L470 AbstractCegarLoop]: Abstraction has has 973 places, 784 transitions, 19069 flow [2022-01-19 00:43:54,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:54,174 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:43:54,174 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:43:54,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2022-01-19 00:43:54,175 INFO L402 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:43:54,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:43:54,175 INFO L85 PathProgramCache]: Analyzing trace with hash -274224380, now seen corresponding path program 205 times [2022-01-19 00:43:54,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:43:54,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902012667] [2022-01-19 00:43:54,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:43:54,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:43:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:43:54,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:43:54,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:43:54,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902012667] [2022-01-19 00:43:54,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902012667] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:43:54,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:43:54,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:43:54,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017527410] [2022-01-19 00:43:54,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:43:54,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:43:54,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:43:54,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:43:54,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:43:54,275 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:43:54,276 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 973 places, 784 transitions, 19069 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:54,276 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:43:54,276 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:43:54,276 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:43:56,216 INFO L129 PetriNetUnfolder]: 968/3360 cut-off events. [2022-01-19 00:43:56,216 INFO L130 PetriNetUnfolder]: For 97212/97225 co-relation queries the response was YES. [2022-01-19 00:43:56,290 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27147 conditions, 3360 events. 968/3360 cut-off events. For 97212/97225 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 27732 event pairs, 399 based on Foata normal form. 1/3250 useless extension candidates. Maximal degree in co-relation 26780. Up to 853 conditions per place. [2022-01-19 00:43:56,304 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 501 selfloop transitions, 187 changer transitions 67/896 dead transitions. [2022-01-19 00:43:56,304 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 985 places, 896 transitions, 23363 flow [2022-01-19 00:43:56,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 00:43:56,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 00:43:56,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5935 transitions. [2022-01-19 00:43:56,307 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7638352638352638 [2022-01-19 00:43:56,307 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5935 transitions. [2022-01-19 00:43:56,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5935 transitions. [2022-01-19 00:43:56,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:43:56,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5935 transitions. [2022-01-19 00:43:56,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.40540540540542) internal successors, (5935), 37 states have internal predecessors, (5935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:56,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:56,314 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:56,314 INFO L186 Difference]: Start difference. First operand has 973 places, 784 transitions, 19069 flow. Second operand 37 states and 5935 transitions. [2022-01-19 00:43:56,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 985 places, 896 transitions, 23363 flow [2022-01-19 00:43:57,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 967 places, 896 transitions, 22971 flow, removed 117 selfloop flow, removed 18 redundant places. [2022-01-19 00:43:57,452 INFO L242 Difference]: Finished difference. Result has 990 places, 801 transitions, 19769 flow [2022-01-19 00:43:57,453 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18726, PETRI_DIFFERENCE_MINUEND_PLACES=931, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=784, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=608, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=19769, PETRI_PLACES=990, PETRI_TRANSITIONS=801} [2022-01-19 00:43:57,453 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 803 predicate places. [2022-01-19 00:43:57,453 INFO L470 AbstractCegarLoop]: Abstraction has has 990 places, 801 transitions, 19769 flow [2022-01-19 00:43:57,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:57,453 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:43:57,453 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:43:57,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2022-01-19 00:43:57,454 INFO L402 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:43:57,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:43:57,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1883768268, now seen corresponding path program 206 times [2022-01-19 00:43:57,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:43:57,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110312857] [2022-01-19 00:43:57,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:43:57,454 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:43:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:43:57,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:43:57,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:43:57,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110312857] [2022-01-19 00:43:57,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110312857] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:43:57,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:43:57,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:43:57,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403635835] [2022-01-19 00:43:57,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:43:57,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:43:57,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:43:57,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:43:57,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:43:57,552 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:43:57,553 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 990 places, 801 transitions, 19769 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:57,553 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:43:57,553 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:43:57,553 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:43:59,459 INFO L129 PetriNetUnfolder]: 983/3400 cut-off events. [2022-01-19 00:43:59,460 INFO L130 PetriNetUnfolder]: For 96917/96930 co-relation queries the response was YES. [2022-01-19 00:43:59,550 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27738 conditions, 3400 events. 983/3400 cut-off events. For 96917/96930 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 28025 event pairs, 400 based on Foata normal form. 1/3288 useless extension candidates. Maximal degree in co-relation 27364. Up to 854 conditions per place. [2022-01-19 00:43:59,564 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 485 selfloop transitions, 222 changer transitions 66/914 dead transitions. [2022-01-19 00:43:59,564 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1003 places, 914 transitions, 24255 flow [2022-01-19 00:43:59,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 00:43:59,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 00:43:59,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5933 transitions. [2022-01-19 00:43:59,567 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635778635778636 [2022-01-19 00:43:59,567 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5933 transitions. [2022-01-19 00:43:59,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5933 transitions. [2022-01-19 00:43:59,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:43:59,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5933 transitions. [2022-01-19 00:43:59,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.35135135135135) internal successors, (5933), 37 states have internal predecessors, (5933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:59,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:59,574 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:59,574 INFO L186 Difference]: Start difference. First operand has 990 places, 801 transitions, 19769 flow. Second operand 37 states and 5933 transitions. [2022-01-19 00:43:59,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1003 places, 914 transitions, 24255 flow [2022-01-19 00:44:00,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 983 places, 914 transitions, 23808 flow, removed 90 selfloop flow, removed 20 redundant places. [2022-01-19 00:44:00,829 INFO L242 Difference]: Finished difference. Result has 1007 places, 819 transitions, 20554 flow [2022-01-19 00:44:00,829 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=19380, PETRI_DIFFERENCE_MINUEND_PLACES=947, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=801, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=590, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=20554, PETRI_PLACES=1007, PETRI_TRANSITIONS=819} [2022-01-19 00:44:00,829 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 820 predicate places. [2022-01-19 00:44:00,829 INFO L470 AbstractCegarLoop]: Abstraction has has 1007 places, 819 transitions, 20554 flow [2022-01-19 00:44:00,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:00,830 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:44:00,830 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:44:00,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2022-01-19 00:44:00,830 INFO L402 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:44:00,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:44:00,830 INFO L85 PathProgramCache]: Analyzing trace with hash -2087182256, now seen corresponding path program 207 times [2022-01-19 00:44:00,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:44:00,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542167448] [2022-01-19 00:44:00,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:44:00,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:44:00,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:44:00,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:44:00,930 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:44:00,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542167448] [2022-01-19 00:44:00,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542167448] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:44:00,930 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:44:00,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:44:00,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134357617] [2022-01-19 00:44:00,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:44:00,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:44:00,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:44:00,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:44:00,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:44:00,931 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:44:00,932 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1007 places, 819 transitions, 20554 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:00,932 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:44:00,932 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:44:00,932 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:44:03,062 INFO L129 PetriNetUnfolder]: 974/3422 cut-off events. [2022-01-19 00:44:03,062 INFO L130 PetriNetUnfolder]: For 101997/102010 co-relation queries the response was YES. [2022-01-19 00:44:03,155 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27879 conditions, 3422 events. 974/3422 cut-off events. For 101997/102010 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 28564 event pairs, 357 based on Foata normal form. 1/3320 useless extension candidates. Maximal degree in co-relation 27497. Up to 853 conditions per place. [2022-01-19 00:44:03,169 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 378 selfloop transitions, 349 changer transitions 86/954 dead transitions. [2022-01-19 00:44:03,170 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1029 places, 954 transitions, 25702 flow [2022-01-19 00:44:03,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 00:44:03,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 00:44:03,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7336 transitions. [2022-01-19 00:44:03,173 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7594202898550725 [2022-01-19 00:44:03,173 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7336 transitions. [2022-01-19 00:44:03,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7336 transitions. [2022-01-19 00:44:03,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:44:03,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7336 transitions. [2022-01-19 00:44:03,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.47826086956522) internal successors, (7336), 46 states have internal predecessors, (7336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:03,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:03,184 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:03,184 INFO L186 Difference]: Start difference. First operand has 1007 places, 819 transitions, 20554 flow. Second operand 46 states and 7336 transitions. [2022-01-19 00:44:03,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1029 places, 954 transitions, 25702 flow [2022-01-19 00:44:04,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1008 places, 954 transitions, 25219 flow, removed 117 selfloop flow, removed 21 redundant places. [2022-01-19 00:44:04,388 INFO L242 Difference]: Finished difference. Result has 1040 places, 820 transitions, 21154 flow [2022-01-19 00:44:04,388 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=20147, PETRI_DIFFERENCE_MINUEND_PLACES=963, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=819, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=342, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=21154, PETRI_PLACES=1040, PETRI_TRANSITIONS=820} [2022-01-19 00:44:04,388 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 853 predicate places. [2022-01-19 00:44:04,388 INFO L470 AbstractCegarLoop]: Abstraction has has 1040 places, 820 transitions, 21154 flow [2022-01-19 00:44:04,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:04,389 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:44:04,389 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:44:04,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2022-01-19 00:44:04,389 INFO L402 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:44:04,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:44:04,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1748549088, now seen corresponding path program 208 times [2022-01-19 00:44:04,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:44:04,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874475255] [2022-01-19 00:44:04,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:44:04,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:44:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:44:04,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:44:04,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:44:04,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874475255] [2022-01-19 00:44:04,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874475255] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:44:04,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:44:04,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:44:04,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105334357] [2022-01-19 00:44:04,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:44:04,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:44:04,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:44:04,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:44:04,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:44:04,496 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:44:04,497 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1040 places, 820 transitions, 21154 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:04,497 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:44:04,497 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:44:04,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:44:06,425 INFO L129 PetriNetUnfolder]: 961/3370 cut-off events. [2022-01-19 00:44:06,426 INFO L130 PetriNetUnfolder]: For 103498/103511 co-relation queries the response was YES. [2022-01-19 00:44:06,517 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27772 conditions, 3370 events. 961/3370 cut-off events. For 103498/103511 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 27921 event pairs, 376 based on Foata normal form. 1/3260 useless extension candidates. Maximal degree in co-relation 27375. Up to 853 conditions per place. [2022-01-19 00:44:06,531 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 509 selfloop transitions, 206 changer transitions 59/915 dead transitions. [2022-01-19 00:44:06,531 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1034 places, 915 transitions, 25249 flow [2022-01-19 00:44:06,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 00:44:06,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 00:44:06,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4514 transitions. [2022-01-19 00:44:06,534 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7676870748299319 [2022-01-19 00:44:06,534 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4514 transitions. [2022-01-19 00:44:06,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4514 transitions. [2022-01-19 00:44:06,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:44:06,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4514 transitions. [2022-01-19 00:44:06,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 161.21428571428572) internal successors, (4514), 28 states have internal predecessors, (4514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:06,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:06,539 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:06,540 INFO L186 Difference]: Start difference. First operand has 1040 places, 820 transitions, 21154 flow. Second operand 28 states and 4514 transitions. [2022-01-19 00:44:06,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1034 places, 915 transitions, 25249 flow [2022-01-19 00:44:07,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1002 places, 915 transitions, 24858 flow, removed 74 selfloop flow, removed 32 redundant places. [2022-01-19 00:44:07,694 INFO L242 Difference]: Finished difference. Result has 1014 places, 828 transitions, 21519 flow [2022-01-19 00:44:07,695 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=20834, PETRI_DIFFERENCE_MINUEND_PLACES=975, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=820, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=619, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=21519, PETRI_PLACES=1014, PETRI_TRANSITIONS=828} [2022-01-19 00:44:07,695 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 827 predicate places. [2022-01-19 00:44:07,695 INFO L470 AbstractCegarLoop]: Abstraction has has 1014 places, 828 transitions, 21519 flow [2022-01-19 00:44:07,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:07,695 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:44:07,695 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:44:07,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2022-01-19 00:44:07,696 INFO L402 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:44:07,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:44:07,696 INFO L85 PathProgramCache]: Analyzing trace with hash -482510724, now seen corresponding path program 209 times [2022-01-19 00:44:07,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:44:07,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417804756] [2022-01-19 00:44:07,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:44:07,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:44:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:44:07,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:44:07,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:44:07,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417804756] [2022-01-19 00:44:07,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417804756] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:44:07,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:44:07,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:44:07,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520370451] [2022-01-19 00:44:07,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:44:07,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:44:07,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:44:07,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:44:07,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:44:07,796 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:44:07,797 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1014 places, 828 transitions, 21519 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:07,797 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:44:07,797 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:44:07,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:44:09,714 INFO L129 PetriNetUnfolder]: 972/3389 cut-off events. [2022-01-19 00:44:09,714 INFO L130 PetriNetUnfolder]: For 101371/101384 co-relation queries the response was YES. [2022-01-19 00:44:09,795 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28042 conditions, 3389 events. 972/3389 cut-off events. For 101371/101384 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 28140 event pairs, 390 based on Foata normal form. 1/3275 useless extension candidates. Maximal degree in co-relation 27662. Up to 853 conditions per place. [2022-01-19 00:44:09,809 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 516 selfloop transitions, 202 changer transitions 57/916 dead transitions. [2022-01-19 00:44:09,809 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1030 places, 916 transitions, 25279 flow [2022-01-19 00:44:09,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:44:09,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:44:09,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4831 transitions. [2022-01-19 00:44:09,812 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7668253968253969 [2022-01-19 00:44:09,812 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4831 transitions. [2022-01-19 00:44:09,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4831 transitions. [2022-01-19 00:44:09,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:44:09,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4831 transitions. [2022-01-19 00:44:09,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 161.03333333333333) internal successors, (4831), 30 states have internal predecessors, (4831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:09,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:09,818 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:09,818 INFO L186 Difference]: Start difference. First operand has 1014 places, 828 transitions, 21519 flow. Second operand 30 states and 4831 transitions. [2022-01-19 00:44:09,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1030 places, 916 transitions, 25279 flow [2022-01-19 00:44:11,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1014 places, 916 transitions, 24751 flow, removed 69 selfloop flow, removed 16 redundant places. [2022-01-19 00:44:11,056 INFO L242 Difference]: Finished difference. Result has 1027 places, 841 transitions, 21844 flow [2022-01-19 00:44:11,056 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=21040, PETRI_DIFFERENCE_MINUEND_PLACES=985, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=828, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=632, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=21844, PETRI_PLACES=1027, PETRI_TRANSITIONS=841} [2022-01-19 00:44:11,057 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 840 predicate places. [2022-01-19 00:44:11,057 INFO L470 AbstractCegarLoop]: Abstraction has has 1027 places, 841 transitions, 21844 flow [2022-01-19 00:44:11,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:11,057 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:44:11,057 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:44:11,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2022-01-19 00:44:11,057 INFO L402 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:44:11,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:44:11,058 INFO L85 PathProgramCache]: Analyzing trace with hash -2067571102, now seen corresponding path program 210 times [2022-01-19 00:44:11,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:44:11,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783407645] [2022-01-19 00:44:11,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:44:11,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:44:11,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:44:11,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:44:11,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:44:11,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783407645] [2022-01-19 00:44:11,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783407645] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:44:11,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:44:11,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:44:11,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229790006] [2022-01-19 00:44:11,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:44:11,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:44:11,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:44:11,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:44:11,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:44:11,174 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:44:11,175 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1027 places, 841 transitions, 21844 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:11,175 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:44:11,175 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:44:11,175 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:44:13,245 INFO L129 PetriNetUnfolder]: 977/3413 cut-off events. [2022-01-19 00:44:13,245 INFO L130 PetriNetUnfolder]: For 104432/104445 co-relation queries the response was YES. [2022-01-19 00:44:13,319 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28288 conditions, 3413 events. 977/3413 cut-off events. For 104432/104445 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 28451 event pairs, 376 based on Foata normal form. 1/3301 useless extension candidates. Maximal degree in co-relation 27905. Up to 853 conditions per place. [2022-01-19 00:44:13,332 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 524 selfloop transitions, 219 changer transitions 60/944 dead transitions. [2022-01-19 00:44:13,332 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1041 places, 944 transitions, 26217 flow [2022-01-19 00:44:13,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:44:13,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:44:13,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4826 transitions. [2022-01-19 00:44:13,335 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7660317460317461 [2022-01-19 00:44:13,335 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4826 transitions. [2022-01-19 00:44:13,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4826 transitions. [2022-01-19 00:44:13,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:44:13,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4826 transitions. [2022-01-19 00:44:13,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.86666666666667) internal successors, (4826), 30 states have internal predecessors, (4826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:13,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:13,340 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:13,340 INFO L186 Difference]: Start difference. First operand has 1027 places, 841 transitions, 21844 flow. Second operand 30 states and 4826 transitions. [2022-01-19 00:44:13,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1041 places, 944 transitions, 26217 flow [2022-01-19 00:44:14,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1029 places, 944 transitions, 25853 flow, removed 49 selfloop flow, removed 12 redundant places. [2022-01-19 00:44:14,560 INFO L242 Difference]: Finished difference. Result has 1043 places, 859 transitions, 22587 flow [2022-01-19 00:44:14,560 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=21524, PETRI_DIFFERENCE_MINUEND_PLACES=1000, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=841, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=631, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=22587, PETRI_PLACES=1043, PETRI_TRANSITIONS=859} [2022-01-19 00:44:14,560 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 856 predicate places. [2022-01-19 00:44:14,560 INFO L470 AbstractCegarLoop]: Abstraction has has 1043 places, 859 transitions, 22587 flow [2022-01-19 00:44:14,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:14,561 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:44:14,561 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:44:14,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2022-01-19 00:44:14,561 INFO L402 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:44:14,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:44:14,561 INFO L85 PathProgramCache]: Analyzing trace with hash -301185810, now seen corresponding path program 211 times [2022-01-19 00:44:14,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:44:14,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256349648] [2022-01-19 00:44:14,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:44:14,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:44:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:44:14,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:44:14,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:44:14,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256349648] [2022-01-19 00:44:14,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256349648] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:44:14,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:44:14,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:44:14,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419855279] [2022-01-19 00:44:14,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:44:14,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:44:14,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:44:14,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:44:14,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:44:14,666 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:44:14,667 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1043 places, 859 transitions, 22587 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:14,667 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:44:14,667 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:44:14,667 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:44:16,878 INFO L129 PetriNetUnfolder]: 981/3492 cut-off events. [2022-01-19 00:44:16,878 INFO L130 PetriNetUnfolder]: For 109728/109741 co-relation queries the response was YES. [2022-01-19 00:44:17,098 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28815 conditions, 3492 events. 981/3492 cut-off events. For 109728/109741 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 29557 event pairs, 380 based on Foata normal form. 1/3385 useless extension candidates. Maximal degree in co-relation 28426. Up to 852 conditions per place. [2022-01-19 00:44:17,112 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 537 selfloop transitions, 221 changer transitions 88/987 dead transitions. [2022-01-19 00:44:17,112 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1070 places, 987 transitions, 27869 flow [2022-01-19 00:44:17,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-19 00:44:17,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-01-19 00:44:17,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6873 transitions. [2022-01-19 00:44:17,115 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7611295681063123 [2022-01-19 00:44:17,115 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6873 transitions. [2022-01-19 00:44:17,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6873 transitions. [2022-01-19 00:44:17,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:44:17,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6873 transitions. [2022-01-19 00:44:17,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 159.8372093023256) internal successors, (6873), 43 states have internal predecessors, (6873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:17,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:17,124 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:17,124 INFO L186 Difference]: Start difference. First operand has 1043 places, 859 transitions, 22587 flow. Second operand 43 states and 6873 transitions. [2022-01-19 00:44:17,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1070 places, 987 transitions, 27869 flow [2022-01-19 00:44:18,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1059 places, 987 transitions, 27472 flow, removed 107 selfloop flow, removed 11 redundant places. [2022-01-19 00:44:18,465 INFO L242 Difference]: Finished difference. Result has 1088 places, 863 transitions, 23198 flow [2022-01-19 00:44:18,465 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=22262, PETRI_DIFFERENCE_MINUEND_PLACES=1017, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=859, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=23198, PETRI_PLACES=1088, PETRI_TRANSITIONS=863} [2022-01-19 00:44:18,466 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 901 predicate places. [2022-01-19 00:44:18,466 INFO L470 AbstractCegarLoop]: Abstraction has has 1088 places, 863 transitions, 23198 flow [2022-01-19 00:44:18,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:18,466 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:44:18,466 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:44:18,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2022-01-19 00:44:18,466 INFO L402 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:44:18,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:44:18,466 INFO L85 PathProgramCache]: Analyzing trace with hash 266956514, now seen corresponding path program 212 times [2022-01-19 00:44:18,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:44:18,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971665822] [2022-01-19 00:44:18,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:44:18,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:44:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:44:18,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:44:18,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:44:18,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971665822] [2022-01-19 00:44:18,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971665822] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:44:18,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:44:18,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:44:18,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821228477] [2022-01-19 00:44:18,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:44:18,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:44:18,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:44:18,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:44:18,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:44:18,572 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:44:18,572 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1088 places, 863 transitions, 23198 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:18,572 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:44:18,572 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:44:18,572 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:44:20,855 INFO L129 PetriNetUnfolder]: 965/3397 cut-off events. [2022-01-19 00:44:20,855 INFO L130 PetriNetUnfolder]: For 110425/110438 co-relation queries the response was YES. [2022-01-19 00:44:20,934 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28570 conditions, 3397 events. 965/3397 cut-off events. For 110425/110438 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 28422 event pairs, 377 based on Foata normal form. 1/3285 useless extension candidates. Maximal degree in co-relation 28160. Up to 852 conditions per place. [2022-01-19 00:44:20,948 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 523 selfloop transitions, 220 changer transitions 61/945 dead transitions. [2022-01-19 00:44:20,948 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1087 places, 945 transitions, 26936 flow [2022-01-19 00:44:20,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:44:20,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:44:20,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4827 transitions. [2022-01-19 00:44:20,950 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7661904761904762 [2022-01-19 00:44:20,950 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4827 transitions. [2022-01-19 00:44:20,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4827 transitions. [2022-01-19 00:44:20,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:44:20,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4827 transitions. [2022-01-19 00:44:20,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.9) internal successors, (4827), 30 states have internal predecessors, (4827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:20,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:20,956 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:20,956 INFO L186 Difference]: Start difference. First operand has 1088 places, 863 transitions, 23198 flow. Second operand 30 states and 4827 transitions. [2022-01-19 00:44:20,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1087 places, 945 transitions, 26936 flow [2022-01-19 00:44:22,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1050 places, 945 transitions, 26155 flow, removed 107 selfloop flow, removed 37 redundant places. [2022-01-19 00:44:22,227 INFO L242 Difference]: Finished difference. Result has 1063 places, 868 transitions, 23147 flow [2022-01-19 00:44:22,228 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=22564, PETRI_DIFFERENCE_MINUEND_PLACES=1021, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=863, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=646, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=23147, PETRI_PLACES=1063, PETRI_TRANSITIONS=868} [2022-01-19 00:44:22,228 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 876 predicate places. [2022-01-19 00:44:22,228 INFO L470 AbstractCegarLoop]: Abstraction has has 1063 places, 868 transitions, 23147 flow [2022-01-19 00:44:22,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:22,228 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:44:22,228 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:44:22,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2022-01-19 00:44:22,229 INFO L402 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:44:22,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:44:22,229 INFO L85 PathProgramCache]: Analyzing trace with hash 370357420, now seen corresponding path program 213 times [2022-01-19 00:44:22,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:44:22,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719277026] [2022-01-19 00:44:22,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:44:22,229 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:44:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:44:22,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:44:22,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:44:22,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719277026] [2022-01-19 00:44:22,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719277026] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:44:22,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:44:22,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:44:22,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851461843] [2022-01-19 00:44:22,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:44:22,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:44:22,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:44:22,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:44:22,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:44:22,333 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:44:22,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1063 places, 868 transitions, 23147 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:22,334 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:44:22,334 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:44:22,334 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:44:24,386 INFO L129 PetriNetUnfolder]: 941/3328 cut-off events. [2022-01-19 00:44:24,387 INFO L130 PetriNetUnfolder]: For 108544/108557 co-relation queries the response was YES. [2022-01-19 00:44:24,466 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27281 conditions, 3328 events. 941/3328 cut-off events. For 108544/108557 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 27641 event pairs, 378 based on Foata normal form. 1/3216 useless extension candidates. Maximal degree in co-relation 26889. Up to 847 conditions per place. [2022-01-19 00:44:24,480 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 523 selfloop transitions, 203 changer transitions 62/929 dead transitions. [2022-01-19 00:44:24,481 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1077 places, 929 transitions, 26221 flow [2022-01-19 00:44:24,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:44:24,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:44:24,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4816 transitions. [2022-01-19 00:44:24,483 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7644444444444445 [2022-01-19 00:44:24,483 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4816 transitions. [2022-01-19 00:44:24,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4816 transitions. [2022-01-19 00:44:24,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:44:24,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4816 transitions. [2022-01-19 00:44:24,486 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.53333333333333) internal successors, (4816), 30 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:24,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:24,489 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:24,489 INFO L186 Difference]: Start difference. First operand has 1063 places, 868 transitions, 23147 flow. Second operand 30 states and 4816 transitions. [2022-01-19 00:44:24,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1077 places, 929 transitions, 26221 flow [2022-01-19 00:44:25,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1064 places, 929 transitions, 25869 flow, removed 60 selfloop flow, removed 13 redundant places. [2022-01-19 00:44:25,695 INFO L242 Difference]: Finished difference. Result has 1075 places, 842 transitions, 22371 flow [2022-01-19 00:44:25,695 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=22817, PETRI_DIFFERENCE_MINUEND_PLACES=1035, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=868, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=203, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=665, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=22371, PETRI_PLACES=1075, PETRI_TRANSITIONS=842} [2022-01-19 00:44:25,696 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 888 predicate places. [2022-01-19 00:44:25,696 INFO L470 AbstractCegarLoop]: Abstraction has has 1075 places, 842 transitions, 22371 flow [2022-01-19 00:44:25,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:25,696 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:44:25,696 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:44:25,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2022-01-19 00:44:25,696 INFO L402 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:44:25,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:44:25,696 INFO L85 PathProgramCache]: Analyzing trace with hash -156140234, now seen corresponding path program 214 times [2022-01-19 00:44:25,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:44:25,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892465513] [2022-01-19 00:44:25,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:44:25,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:44:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:44:25,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:44:25,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:44:25,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892465513] [2022-01-19 00:44:25,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892465513] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:44:25,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:44:25,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:44:25,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974290342] [2022-01-19 00:44:25,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:44:25,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:44:25,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:44:25,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:44:25,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:44:25,800 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:44:25,801 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1075 places, 842 transitions, 22371 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:25,801 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:44:25,801 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:44:25,801 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:44:27,831 INFO L129 PetriNetUnfolder]: 925/3274 cut-off events. [2022-01-19 00:44:27,831 INFO L130 PetriNetUnfolder]: For 104639/104652 co-relation queries the response was YES. [2022-01-19 00:44:27,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26765 conditions, 3274 events. 925/3274 cut-off events. For 104639/104652 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 27079 event pairs, 372 based on Foata normal form. 1/3162 useless extension candidates. Maximal degree in co-relation 26372. Up to 846 conditions per place. [2022-01-19 00:44:27,935 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 504 selfloop transitions, 186 changer transitions 62/893 dead transitions. [2022-01-19 00:44:27,936 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1067 places, 893 transitions, 25131 flow [2022-01-19 00:44:27,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 00:44:27,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 00:44:27,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4503 transitions. [2022-01-19 00:44:27,938 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658163265306123 [2022-01-19 00:44:27,938 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4503 transitions. [2022-01-19 00:44:27,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4503 transitions. [2022-01-19 00:44:27,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:44:27,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4503 transitions. [2022-01-19 00:44:27,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.82142857142858) internal successors, (4503), 28 states have internal predecessors, (4503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:27,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:27,945 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:27,945 INFO L186 Difference]: Start difference. First operand has 1075 places, 842 transitions, 22371 flow. Second operand 28 states and 4503 transitions. [2022-01-19 00:44:27,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1067 places, 893 transitions, 25131 flow [2022-01-19 00:44:29,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1037 places, 893 transitions, 24322 flow, removed 36 selfloop flow, removed 30 redundant places. [2022-01-19 00:44:29,198 INFO L242 Difference]: Finished difference. Result has 1046 places, 817 transitions, 21239 flow [2022-01-19 00:44:29,199 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=21627, PETRI_DIFFERENCE_MINUEND_PLACES=1010, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=842, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=656, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=21239, PETRI_PLACES=1046, PETRI_TRANSITIONS=817} [2022-01-19 00:44:29,199 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 859 predicate places. [2022-01-19 00:44:29,199 INFO L470 AbstractCegarLoop]: Abstraction has has 1046 places, 817 transitions, 21239 flow [2022-01-19 00:44:29,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:29,199 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:44:29,200 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:44:29,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2022-01-19 00:44:29,200 INFO L402 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:44:29,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:44:29,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1662718622, now seen corresponding path program 215 times [2022-01-19 00:44:29,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:44:29,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353934352] [2022-01-19 00:44:29,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:44:29,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:44:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:44:29,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:44:29,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:44:29,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353934352] [2022-01-19 00:44:29,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353934352] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:44:29,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:44:29,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:44:29,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593359069] [2022-01-19 00:44:29,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:44:29,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:44:29,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:44:29,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:44:29,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:44:29,305 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:44:29,306 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1046 places, 817 transitions, 21239 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:29,306 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:44:29,306 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:44:29,306 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:44:31,280 INFO L129 PetriNetUnfolder]: 928/3283 cut-off events. [2022-01-19 00:44:31,280 INFO L130 PetriNetUnfolder]: For 102058/102071 co-relation queries the response was YES. [2022-01-19 00:44:31,357 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26515 conditions, 3283 events. 928/3283 cut-off events. For 102058/102071 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 27184 event pairs, 379 based on Foata normal form. 1/3170 useless extension candidates. Maximal degree in co-relation 26132. Up to 847 conditions per place. [2022-01-19 00:44:31,369 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 501 selfloop transitions, 209 changer transitions 58/909 dead transitions. [2022-01-19 00:44:31,369 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1041 places, 909 transitions, 25270 flow [2022-01-19 00:44:31,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:44:31,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:44:31,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4669 transitions. [2022-01-19 00:44:31,371 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2022-01-19 00:44:31,372 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4669 transitions. [2022-01-19 00:44:31,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4669 transitions. [2022-01-19 00:44:31,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:44:31,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4669 transitions. [2022-01-19 00:44:31,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 161.0) internal successors, (4669), 29 states have internal predecessors, (4669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:31,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:31,377 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:31,377 INFO L186 Difference]: Start difference. First operand has 1046 places, 817 transitions, 21239 flow. Second operand 29 states and 4669 transitions. [2022-01-19 00:44:31,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1041 places, 909 transitions, 25270 flow [2022-01-19 00:44:32,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1003 places, 909 transitions, 24203 flow, removed 39 selfloop flow, removed 38 redundant places. [2022-01-19 00:44:32,536 INFO L242 Difference]: Finished difference. Result has 1017 places, 828 transitions, 21157 flow [2022-01-19 00:44:32,536 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=20379, PETRI_DIFFERENCE_MINUEND_PLACES=975, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=817, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=613, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=21157, PETRI_PLACES=1017, PETRI_TRANSITIONS=828} [2022-01-19 00:44:32,536 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 830 predicate places. [2022-01-19 00:44:32,536 INFO L470 AbstractCegarLoop]: Abstraction has has 1017 places, 828 transitions, 21157 flow [2022-01-19 00:44:32,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:32,537 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:44:32,537 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:44:32,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2022-01-19 00:44:32,537 INFO L402 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:44:32,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:44:32,537 INFO L85 PathProgramCache]: Analyzing trace with hash 60543360, now seen corresponding path program 216 times [2022-01-19 00:44:32,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:44:32,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377734870] [2022-01-19 00:44:32,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:44:32,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:44:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:44:32,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:44:32,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:44:32,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377734870] [2022-01-19 00:44:32,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377734870] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:44:32,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:44:32,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:44:32,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157355948] [2022-01-19 00:44:32,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:44:32,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:44:32,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:44:32,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:44:32,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:44:32,648 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:44:32,649 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1017 places, 828 transitions, 21157 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:32,649 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:44:32,649 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:44:32,649 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:44:34,625 INFO L129 PetriNetUnfolder]: 924/3276 cut-off events. [2022-01-19 00:44:34,625 INFO L130 PetriNetUnfolder]: For 93772/93785 co-relation queries the response was YES. [2022-01-19 00:44:34,697 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26215 conditions, 3276 events. 924/3276 cut-off events. For 93772/93785 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 27007 event pairs, 382 based on Foata normal form. 1/3165 useless extension candidates. Maximal degree in co-relation 25841. Up to 847 conditions per place. [2022-01-19 00:44:34,709 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 518 selfloop transitions, 185 changer transitions 59/903 dead transitions. [2022-01-19 00:44:34,709 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1031 places, 903 transitions, 24506 flow [2022-01-19 00:44:34,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:44:34,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:44:34,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4673 transitions. [2022-01-19 00:44:34,711 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7673234811165845 [2022-01-19 00:44:34,711 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4673 transitions. [2022-01-19 00:44:34,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4673 transitions. [2022-01-19 00:44:34,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:44:34,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4673 transitions. [2022-01-19 00:44:34,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 161.13793103448276) internal successors, (4673), 29 states have internal predecessors, (4673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:34,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:34,717 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:34,717 INFO L186 Difference]: Start difference. First operand has 1017 places, 828 transitions, 21157 flow. Second operand 29 states and 4673 transitions. [2022-01-19 00:44:34,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1031 places, 903 transitions, 24506 flow [2022-01-19 00:44:35,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1017 places, 903 transitions, 24032 flow, removed 48 selfloop flow, removed 14 redundant places. [2022-01-19 00:44:35,831 INFO L242 Difference]: Finished difference. Result has 1030 places, 830 transitions, 21170 flow [2022-01-19 00:44:35,831 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=20736, PETRI_DIFFERENCE_MINUEND_PLACES=989, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=828, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=644, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=21170, PETRI_PLACES=1030, PETRI_TRANSITIONS=830} [2022-01-19 00:44:35,832 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 843 predicate places. [2022-01-19 00:44:35,832 INFO L470 AbstractCegarLoop]: Abstraction has has 1030 places, 830 transitions, 21170 flow [2022-01-19 00:44:35,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:35,832 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:44:35,832 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:44:35,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2022-01-19 00:44:35,832 INFO L402 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:44:35,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:44:35,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1402444780, now seen corresponding path program 217 times [2022-01-19 00:44:35,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:44:35,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130935920] [2022-01-19 00:44:35,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:44:35,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:44:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:44:35,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:44:35,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:44:35,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130935920] [2022-01-19 00:44:35,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130935920] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:44:35,931 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:44:35,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:44:35,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351344449] [2022-01-19 00:44:35,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:44:35,931 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:44:35,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:44:35,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:44:35,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:44:35,933 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:44:35,933 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1030 places, 830 transitions, 21170 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:35,933 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:44:35,933 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:44:35,933 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:44:37,930 INFO L129 PetriNetUnfolder]: 915/3244 cut-off events. [2022-01-19 00:44:37,930 INFO L130 PetriNetUnfolder]: For 94653/94666 co-relation queries the response was YES. [2022-01-19 00:44:38,003 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25920 conditions, 3244 events. 915/3244 cut-off events. For 94653/94666 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 26775 event pairs, 382 based on Foata normal form. 1/3131 useless extension candidates. Maximal degree in co-relation 25541. Up to 847 conditions per place. [2022-01-19 00:44:38,017 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 516 selfloop transitions, 172 changer transitions 59/888 dead transitions. [2022-01-19 00:44:38,017 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1045 places, 888 transitions, 24173 flow [2022-01-19 00:44:38,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:44:38,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:44:38,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4820 transitions. [2022-01-19 00:44:38,019 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.765079365079365 [2022-01-19 00:44:38,019 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4820 transitions. [2022-01-19 00:44:38,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4820 transitions. [2022-01-19 00:44:38,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:44:38,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4820 transitions. [2022-01-19 00:44:38,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.66666666666666) internal successors, (4820), 30 states have internal predecessors, (4820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:38,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:38,025 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:38,025 INFO L186 Difference]: Start difference. First operand has 1030 places, 830 transitions, 21170 flow. Second operand 30 states and 4820 transitions. [2022-01-19 00:44:38,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1045 places, 888 transitions, 24173 flow [2022-01-19 00:44:39,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1030 places, 888 transitions, 23785 flow, removed 49 selfloop flow, removed 15 redundant places. [2022-01-19 00:44:39,144 INFO L242 Difference]: Finished difference. Result has 1042 places, 817 transitions, 20869 flow [2022-01-19 00:44:39,144 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=20829, PETRI_DIFFERENCE_MINUEND_PLACES=1001, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=830, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=658, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=20869, PETRI_PLACES=1042, PETRI_TRANSITIONS=817} [2022-01-19 00:44:39,144 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 855 predicate places. [2022-01-19 00:44:39,144 INFO L470 AbstractCegarLoop]: Abstraction has has 1042 places, 817 transitions, 20869 flow [2022-01-19 00:44:39,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:39,145 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:44:39,145 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:44:39,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2022-01-19 00:44:39,145 INFO L402 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:44:39,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:44:39,145 INFO L85 PathProgramCache]: Analyzing trace with hash 692994718, now seen corresponding path program 218 times [2022-01-19 00:44:39,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:44:39,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128866074] [2022-01-19 00:44:39,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:44:39,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:44:39,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:44:39,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:44:39,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:44:39,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128866074] [2022-01-19 00:44:39,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128866074] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:44:39,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:44:39,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:44:39,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886192994] [2022-01-19 00:44:39,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:44:39,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:44:39,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:44:39,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:44:39,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:44:39,272 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:44:39,272 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1042 places, 817 transitions, 20869 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:39,272 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:44:39,273 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:44:39,273 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:44:41,171 INFO L129 PetriNetUnfolder]: 890/3159 cut-off events. [2022-01-19 00:44:41,171 INFO L130 PetriNetUnfolder]: For 91632/91645 co-relation queries the response was YES. [2022-01-19 00:44:41,241 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24946 conditions, 3159 events. 890/3159 cut-off events. For 91632/91645 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 25763 event pairs, 378 based on Foata normal form. 1/3048 useless extension candidates. Maximal degree in co-relation 24565. Up to 841 conditions per place. [2022-01-19 00:44:41,252 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 502 selfloop transitions, 150 changer transitions 61/854 dead transitions. [2022-01-19 00:44:41,253 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1043 places, 854 transitions, 23043 flow [2022-01-19 00:44:41,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:44:41,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:44:41,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4654 transitions. [2022-01-19 00:44:41,255 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7642036124794745 [2022-01-19 00:44:41,255 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4654 transitions. [2022-01-19 00:44:41,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4654 transitions. [2022-01-19 00:44:41,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:44:41,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4654 transitions. [2022-01-19 00:44:41,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.48275862068965) internal successors, (4654), 29 states have internal predecessors, (4654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:41,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:41,260 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:41,260 INFO L186 Difference]: Start difference. First operand has 1042 places, 817 transitions, 20869 flow. Second operand 29 states and 4654 transitions. [2022-01-19 00:44:41,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1043 places, 854 transitions, 23043 flow [2022-01-19 00:44:42,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1012 places, 854 transitions, 22482 flow, removed 32 selfloop flow, removed 31 redundant places. [2022-01-19 00:44:42,311 INFO L242 Difference]: Finished difference. Result has 1021 places, 781 transitions, 19552 flow [2022-01-19 00:44:42,312 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=20349, PETRI_DIFFERENCE_MINUEND_PLACES=984, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=817, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=667, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=19552, PETRI_PLACES=1021, PETRI_TRANSITIONS=781} [2022-01-19 00:44:42,312 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 834 predicate places. [2022-01-19 00:44:42,312 INFO L470 AbstractCegarLoop]: Abstraction has has 1021 places, 781 transitions, 19552 flow [2022-01-19 00:44:42,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:42,312 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:44:42,312 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:44:42,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2022-01-19 00:44:42,313 INFO L402 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:44:42,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:44:42,313 INFO L85 PathProgramCache]: Analyzing trace with hash -2112329232, now seen corresponding path program 219 times [2022-01-19 00:44:42,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:44:42,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731912502] [2022-01-19 00:44:42,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:44:42,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:44:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:44:42,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:44:42,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:44:42,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731912502] [2022-01-19 00:44:42,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731912502] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:44:42,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:44:42,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:44:42,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996805279] [2022-01-19 00:44:42,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:44:42,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:44:42,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:44:42,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:44:42,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:44:42,420 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:44:42,421 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1021 places, 781 transitions, 19552 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:42,421 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:44:42,421 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:44:42,421 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:44:44,403 INFO L129 PetriNetUnfolder]: 884/3171 cut-off events. [2022-01-19 00:44:44,404 INFO L130 PetriNetUnfolder]: For 90049/90062 co-relation queries the response was YES. [2022-01-19 00:44:44,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24653 conditions, 3171 events. 884/3171 cut-off events. For 90049/90062 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 26098 event pairs, 362 based on Foata normal form. 1/3060 useless extension candidates. Maximal degree in co-relation 24283. Up to 840 conditions per place. [2022-01-19 00:44:44,563 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 469 selfloop transitions, 184 changer transitions 73/867 dead transitions. [2022-01-19 00:44:44,563 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1011 places, 867 transitions, 23146 flow [2022-01-19 00:44:44,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 00:44:44,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 00:44:44,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5607 transitions. [2022-01-19 00:44:44,566 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628571428571429 [2022-01-19 00:44:44,566 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5607 transitions. [2022-01-19 00:44:44,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5607 transitions. [2022-01-19 00:44:44,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:44:44,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5607 transitions. [2022-01-19 00:44:44,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.2) internal successors, (5607), 35 states have internal predecessors, (5607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:44,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:44,573 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:44,573 INFO L186 Difference]: Start difference. First operand has 1021 places, 781 transitions, 19552 flow. Second operand 35 states and 5607 transitions. [2022-01-19 00:44:44,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1011 places, 867 transitions, 23146 flow [2022-01-19 00:44:45,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 977 places, 867 transitions, 22330 flow, removed 38 selfloop flow, removed 34 redundant places. [2022-01-19 00:44:45,563 INFO L242 Difference]: Finished difference. Result has 991 places, 774 transitions, 19101 flow [2022-01-19 00:44:45,563 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18856, PETRI_DIFFERENCE_MINUEND_PLACES=943, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=781, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=600, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=19101, PETRI_PLACES=991, PETRI_TRANSITIONS=774} [2022-01-19 00:44:45,563 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 804 predicate places. [2022-01-19 00:44:45,563 INFO L470 AbstractCegarLoop]: Abstraction has has 991 places, 774 transitions, 19101 flow [2022-01-19 00:44:45,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:45,564 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:44:45,564 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:44:45,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2022-01-19 00:44:45,564 INFO L402 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:44:45,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:44:45,564 INFO L85 PathProgramCache]: Analyzing trace with hash 352028184, now seen corresponding path program 220 times [2022-01-19 00:44:45,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:44:45,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909614121] [2022-01-19 00:44:45,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:44:45,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:44:45,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:44:45,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:44:45,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:44:45,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909614121] [2022-01-19 00:44:45,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909614121] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:44:45,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:44:45,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:44:45,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716575927] [2022-01-19 00:44:45,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:44:45,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:44:45,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:44:45,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:44:45,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:44:45,662 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:44:45,662 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 991 places, 774 transitions, 19101 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:45,663 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:44:45,663 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:44:45,663 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:44:47,637 INFO L129 PetriNetUnfolder]: 868/3202 cut-off events. [2022-01-19 00:44:47,637 INFO L130 PetriNetUnfolder]: For 87910/87923 co-relation queries the response was YES. [2022-01-19 00:44:47,704 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24310 conditions, 3202 events. 868/3202 cut-off events. For 87910/87923 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 26570 event pairs, 349 based on Foata normal form. 1/3104 useless extension candidates. Maximal degree in co-relation 23948. Up to 839 conditions per place. [2022-01-19 00:44:47,715 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 463 selfloop transitions, 207 changer transitions 90/901 dead transitions. [2022-01-19 00:44:47,715 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1013 places, 901 transitions, 24171 flow [2022-01-19 00:44:47,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 00:44:47,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 00:44:47,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7032 transitions. [2022-01-19 00:44:47,718 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7610389610389611 [2022-01-19 00:44:47,718 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7032 transitions. [2022-01-19 00:44:47,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7032 transitions. [2022-01-19 00:44:47,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:44:47,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7032 transitions. [2022-01-19 00:44:47,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.8181818181818) internal successors, (7032), 44 states have internal predecessors, (7032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:47,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:47,726 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:47,727 INFO L186 Difference]: Start difference. First operand has 991 places, 774 transitions, 19101 flow. Second operand 44 states and 7032 transitions. [2022-01-19 00:44:47,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1013 places, 901 transitions, 24171 flow [2022-01-19 00:44:48,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 986 places, 901 transitions, 23646 flow, removed 65 selfloop flow, removed 27 redundant places. [2022-01-19 00:44:48,699 INFO L242 Difference]: Finished difference. Result has 1015 places, 770 transitions, 19217 flow [2022-01-19 00:44:48,699 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18670, PETRI_DIFFERENCE_MINUEND_PLACES=943, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=774, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=19217, PETRI_PLACES=1015, PETRI_TRANSITIONS=770} [2022-01-19 00:44:48,699 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 828 predicate places. [2022-01-19 00:44:48,699 INFO L470 AbstractCegarLoop]: Abstraction has has 1015 places, 770 transitions, 19217 flow [2022-01-19 00:44:48,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:48,700 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:44:48,700 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:44:48,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2022-01-19 00:44:48,700 INFO L402 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:44:48,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:44:48,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1465091344, now seen corresponding path program 221 times [2022-01-19 00:44:48,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:44:48,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130550212] [2022-01-19 00:44:48,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:44:48,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:44:48,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:44:48,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:44:48,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:44:48,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130550212] [2022-01-19 00:44:48,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130550212] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:44:48,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:44:48,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:44:48,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312983434] [2022-01-19 00:44:48,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:44:48,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:44:48,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:44:48,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:44:48,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:44:48,803 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:44:48,803 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1015 places, 770 transitions, 19217 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:48,803 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:44:48,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:44:48,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:44:50,654 INFO L129 PetriNetUnfolder]: 855/3101 cut-off events. [2022-01-19 00:44:50,654 INFO L130 PetriNetUnfolder]: For 84199/84212 co-relation queries the response was YES. [2022-01-19 00:44:50,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23903 conditions, 3101 events. 855/3101 cut-off events. For 84199/84212 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 25322 event pairs, 358 based on Foata normal form. 1/2995 useless extension candidates. Maximal degree in co-relation 23532. Up to 843 conditions per place. [2022-01-19 00:44:50,744 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 450 selfloop transitions, 207 changer transitions 60/858 dead transitions. [2022-01-19 00:44:50,744 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1013 places, 858 transitions, 22939 flow [2022-01-19 00:44:50,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:44:50,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:44:50,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4825 transitions. [2022-01-19 00:44:50,747 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658730158730159 [2022-01-19 00:44:50,747 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4825 transitions. [2022-01-19 00:44:50,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4825 transitions. [2022-01-19 00:44:50,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:44:50,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4825 transitions. [2022-01-19 00:44:50,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.83333333333334) internal successors, (4825), 30 states have internal predecessors, (4825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:50,753 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:50,754 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:50,754 INFO L186 Difference]: Start difference. First operand has 1015 places, 770 transitions, 19217 flow. Second operand 30 states and 4825 transitions. [2022-01-19 00:44:50,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1013 places, 858 transitions, 22939 flow [2022-01-19 00:44:51,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 974 places, 858 transitions, 22234 flow, removed 113 selfloop flow, removed 39 redundant places. [2022-01-19 00:44:51,749 INFO L242 Difference]: Finished difference. Result has 987 places, 776 transitions, 19261 flow [2022-01-19 00:44:51,749 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18654, PETRI_DIFFERENCE_MINUEND_PLACES=945, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=566, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=19261, PETRI_PLACES=987, PETRI_TRANSITIONS=776} [2022-01-19 00:44:51,749 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 800 predicate places. [2022-01-19 00:44:51,749 INFO L470 AbstractCegarLoop]: Abstraction has has 987 places, 776 transitions, 19261 flow [2022-01-19 00:44:51,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:51,750 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:44:51,750 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:44:51,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2022-01-19 00:44:51,750 INFO L402 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:44:51,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:44:51,750 INFO L85 PathProgramCache]: Analyzing trace with hash -24388250, now seen corresponding path program 222 times [2022-01-19 00:44:51,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:44:51,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27481008] [2022-01-19 00:44:51,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:44:51,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:44:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:44:51,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:44:51,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:44:51,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27481008] [2022-01-19 00:44:51,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27481008] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:44:51,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:44:51,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:44:51,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2456077] [2022-01-19 00:44:51,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:44:51,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:44:51,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:44:51,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:44:51,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:44:51,874 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:44:51,874 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 987 places, 776 transitions, 19261 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:51,875 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:44:51,875 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:44:51,875 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:44:53,534 INFO L129 PetriNetUnfolder]: 844/3066 cut-off events. [2022-01-19 00:44:53,534 INFO L130 PetriNetUnfolder]: For 82101/82114 co-relation queries the response was YES. [2022-01-19 00:44:53,596 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23126 conditions, 3066 events. 844/3066 cut-off events. For 82101/82114 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 24979 event pairs, 364 based on Foata normal form. 1/2957 useless extension candidates. Maximal degree in co-relation 22777. Up to 841 conditions per place. [2022-01-19 00:44:53,606 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 464 selfloop transitions, 175 changer transitions 61/841 dead transitions. [2022-01-19 00:44:53,606 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1000 places, 841 transitions, 22239 flow [2022-01-19 00:44:53,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:44:53,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:44:53,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4658 transitions. [2022-01-19 00:44:53,609 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7648604269293925 [2022-01-19 00:44:53,609 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4658 transitions. [2022-01-19 00:44:53,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4658 transitions. [2022-01-19 00:44:53,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:44:53,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4658 transitions. [2022-01-19 00:44:53,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.6206896551724) internal successors, (4658), 29 states have internal predecessors, (4658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:53,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:53,614 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:53,614 INFO L186 Difference]: Start difference. First operand has 987 places, 776 transitions, 19261 flow. Second operand 29 states and 4658 transitions. [2022-01-19 00:44:53,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1000 places, 841 transitions, 22239 flow [2022-01-19 00:44:54,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 985 places, 841 transitions, 21901 flow, removed 53 selfloop flow, removed 15 redundant places. [2022-01-19 00:44:54,544 INFO L242 Difference]: Finished difference. Result has 996 places, 763 transitions, 19010 flow [2022-01-19 00:44:54,544 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18948, PETRI_DIFFERENCE_MINUEND_PLACES=957, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=776, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=601, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=19010, PETRI_PLACES=996, PETRI_TRANSITIONS=763} [2022-01-19 00:44:54,544 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 809 predicate places. [2022-01-19 00:44:54,544 INFO L470 AbstractCegarLoop]: Abstraction has has 996 places, 763 transitions, 19010 flow [2022-01-19 00:44:54,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:54,545 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:44:54,545 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:44:54,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2022-01-19 00:44:54,545 INFO L402 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:44:54,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:44:54,545 INFO L85 PathProgramCache]: Analyzing trace with hash -112489010, now seen corresponding path program 223 times [2022-01-19 00:44:54,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:44:54,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551797991] [2022-01-19 00:44:54,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:44:54,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:44:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:44:54,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:44:54,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:44:54,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551797991] [2022-01-19 00:44:54,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551797991] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:44:54,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:44:54,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:44:54,650 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470717197] [2022-01-19 00:44:54,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:44:54,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:44:54,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:44:54,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:44:54,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:44:54,652 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:44:54,653 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 996 places, 763 transitions, 19010 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:54,653 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:44:54,653 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:44:54,653 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:44:56,286 INFO L129 PetriNetUnfolder]: 816/2975 cut-off events. [2022-01-19 00:44:56,286 INFO L130 PetriNetUnfolder]: For 78401/78414 co-relation queries the response was YES. [2022-01-19 00:44:56,346 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22158 conditions, 2975 events. 816/2975 cut-off events. For 78401/78414 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 23931 event pairs, 350 based on Foata normal form. 1/2868 useless extension candidates. Maximal degree in co-relation 21809. Up to 832 conditions per place. [2022-01-19 00:44:56,356 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 445 selfloop transitions, 150 changer transitions 64/800 dead transitions. [2022-01-19 00:44:56,356 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 999 places, 800 transitions, 20995 flow [2022-01-19 00:44:56,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:44:56,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:44:56,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4802 transitions. [2022-01-19 00:44:56,358 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7622222222222222 [2022-01-19 00:44:56,358 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4802 transitions. [2022-01-19 00:44:56,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4802 transitions. [2022-01-19 00:44:56,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:44:56,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4802 transitions. [2022-01-19 00:44:56,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.06666666666666) internal successors, (4802), 30 states have internal predecessors, (4802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:56,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:56,364 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:56,364 INFO L186 Difference]: Start difference. First operand has 996 places, 763 transitions, 19010 flow. Second operand 30 states and 4802 transitions. [2022-01-19 00:44:56,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 999 places, 800 transitions, 20995 flow [2022-01-19 00:44:57,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 970 places, 800 transitions, 20492 flow, removed 23 selfloop flow, removed 29 redundant places. [2022-01-19 00:44:57,238 INFO L242 Difference]: Finished difference. Result has 977 places, 719 transitions, 17559 flow [2022-01-19 00:44:57,238 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18531, PETRI_DIFFERENCE_MINUEND_PLACES=941, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=763, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=613, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17559, PETRI_PLACES=977, PETRI_TRANSITIONS=719} [2022-01-19 00:44:57,238 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 790 predicate places. [2022-01-19 00:44:57,238 INFO L470 AbstractCegarLoop]: Abstraction has has 977 places, 719 transitions, 17559 flow [2022-01-19 00:44:57,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:57,239 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:44:57,239 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:44:57,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2022-01-19 00:44:57,239 INFO L402 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:44:57,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:44:57,239 INFO L85 PathProgramCache]: Analyzing trace with hash -201395734, now seen corresponding path program 224 times [2022-01-19 00:44:57,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:44:57,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216555696] [2022-01-19 00:44:57,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:44:57,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:44:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:44:57,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:44:57,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:44:57,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216555696] [2022-01-19 00:44:57,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216555696] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:44:57,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:44:57,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:44:57,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530389814] [2022-01-19 00:44:57,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:44:57,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:44:57,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:44:57,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:44:57,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:44:57,333 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:44:57,334 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 977 places, 719 transitions, 17559 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:57,334 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:44:57,334 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:44:57,334 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:44:58,951 INFO L129 PetriNetUnfolder]: 813/2976 cut-off events. [2022-01-19 00:44:58,952 INFO L130 PetriNetUnfolder]: For 76135/76148 co-relation queries the response was YES. [2022-01-19 00:44:59,008 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22014 conditions, 2976 events. 813/2976 cut-off events. For 76135/76148 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 24011 event pairs, 330 based on Foata normal form. 1/2875 useless extension candidates. Maximal degree in co-relation 21674. Up to 834 conditions per place. [2022-01-19 00:44:59,017 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 325 selfloop transitions, 283 changer transitions 61/810 dead transitions. [2022-01-19 00:44:59,017 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 956 places, 810 transitions, 21113 flow [2022-01-19 00:44:59,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:44:59,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:44:59,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4817 transitions. [2022-01-19 00:44:59,019 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646031746031746 [2022-01-19 00:44:59,019 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4817 transitions. [2022-01-19 00:44:59,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4817 transitions. [2022-01-19 00:44:59,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:44:59,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4817 transitions. [2022-01-19 00:44:59,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.56666666666666) internal successors, (4817), 30 states have internal predecessors, (4817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:59,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:59,025 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:59,025 INFO L186 Difference]: Start difference. First operand has 977 places, 719 transitions, 17559 flow. Second operand 30 states and 4817 transitions. [2022-01-19 00:44:59,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 956 places, 810 transitions, 21113 flow [2022-01-19 00:44:59,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 922 places, 810 transitions, 19990 flow, removed 27 selfloop flow, removed 34 redundant places. [2022-01-19 00:44:59,794 INFO L242 Difference]: Finished difference. Result has 935 places, 725 transitions, 17335 flow [2022-01-19 00:44:59,794 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16582, PETRI_DIFFERENCE_MINUEND_PLACES=893, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=719, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=275, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17335, PETRI_PLACES=935, PETRI_TRANSITIONS=725} [2022-01-19 00:44:59,794 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 748 predicate places. [2022-01-19 00:44:59,794 INFO L470 AbstractCegarLoop]: Abstraction has has 935 places, 725 transitions, 17335 flow [2022-01-19 00:44:59,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:59,795 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:44:59,795 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:44:59,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2022-01-19 00:44:59,795 INFO L402 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:44:59,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:44:59,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1469440986, now seen corresponding path program 225 times [2022-01-19 00:44:59,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:44:59,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749893947] [2022-01-19 00:44:59,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:44:59,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:44:59,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:44:59,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:44:59,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:44:59,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749893947] [2022-01-19 00:44:59,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749893947] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:44:59,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:44:59,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:44:59,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333420175] [2022-01-19 00:44:59,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:44:59,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:44:59,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:44:59,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:44:59,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:44:59,895 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:44:59,896 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 935 places, 725 transitions, 17335 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:59,896 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:44:59,896 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:44:59,896 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:01,570 INFO L129 PetriNetUnfolder]: 810/2987 cut-off events. [2022-01-19 00:45:01,570 INFO L130 PetriNetUnfolder]: For 72633/72646 co-relation queries the response was YES. [2022-01-19 00:45:01,628 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21746 conditions, 2987 events. 810/2987 cut-off events. For 72633/72646 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 24135 event pairs, 337 based on Foata normal form. 1/2888 useless extension candidates. Maximal degree in co-relation 21414. Up to 833 conditions per place. [2022-01-19 00:45:01,638 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 385 selfloop transitions, 228 changer transitions 68/822 dead transitions. [2022-01-19 00:45:01,638 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 956 places, 822 transitions, 21143 flow [2022-01-19 00:45:01,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 00:45:01,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 00:45:01,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5925 transitions. [2022-01-19 00:45:01,641 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625482625482626 [2022-01-19 00:45:01,641 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5925 transitions. [2022-01-19 00:45:01,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5925 transitions. [2022-01-19 00:45:01,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:01,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5925 transitions. [2022-01-19 00:45:01,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.13513513513513) internal successors, (5925), 37 states have internal predecessors, (5925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:01,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:01,648 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:01,648 INFO L186 Difference]: Start difference. First operand has 935 places, 725 transitions, 17335 flow. Second operand 37 states and 5925 transitions. [2022-01-19 00:45:01,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 956 places, 822 transitions, 21143 flow [2022-01-19 00:45:02,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 942 places, 822 transitions, 20784 flow, removed 74 selfloop flow, removed 14 redundant places. [2022-01-19 00:45:02,402 INFO L242 Difference]: Finished difference. Result has 966 places, 729 transitions, 17764 flow [2022-01-19 00:45:02,402 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17051, PETRI_DIFFERENCE_MINUEND_PLACES=906, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=725, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=221, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=17764, PETRI_PLACES=966, PETRI_TRANSITIONS=729} [2022-01-19 00:45:02,402 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 779 predicate places. [2022-01-19 00:45:02,402 INFO L470 AbstractCegarLoop]: Abstraction has has 966 places, 729 transitions, 17764 flow [2022-01-19 00:45:02,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:02,403 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:02,403 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:02,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2022-01-19 00:45:02,403 INFO L402 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:02,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:02,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1320396048, now seen corresponding path program 226 times [2022-01-19 00:45:02,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:02,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036966382] [2022-01-19 00:45:02,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:02,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:02,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:02,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:02,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036966382] [2022-01-19 00:45:02,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036966382] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:02,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:02,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:02,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568471339] [2022-01-19 00:45:02,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:02,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:02,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:02,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:02,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:02,506 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:02,507 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 966 places, 729 transitions, 17764 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:02,507 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:02,507 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:02,507 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:04,096 INFO L129 PetriNetUnfolder]: 806/2971 cut-off events. [2022-01-19 00:45:04,096 INFO L130 PetriNetUnfolder]: For 77461/77474 co-relation queries the response was YES. [2022-01-19 00:45:04,154 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21922 conditions, 2971 events. 806/2971 cut-off events. For 77461/77474 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 23956 event pairs, 328 based on Foata normal form. 1/2871 useless extension candidates. Maximal degree in co-relation 21576. Up to 832 conditions per place. [2022-01-19 00:45:04,163 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 399 selfloop transitions, 222 changer transitions 61/823 dead transitions. [2022-01-19 00:45:04,164 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 970 places, 823 transitions, 21603 flow [2022-01-19 00:45:04,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 00:45:04,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 00:45:04,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4508 transitions. [2022-01-19 00:45:04,166 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2022-01-19 00:45:04,166 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4508 transitions. [2022-01-19 00:45:04,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4508 transitions. [2022-01-19 00:45:04,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:04,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4508 transitions. [2022-01-19 00:45:04,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 161.0) internal successors, (4508), 28 states have internal predecessors, (4508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:04,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:04,171 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:04,171 INFO L186 Difference]: Start difference. First operand has 966 places, 729 transitions, 17764 flow. Second operand 28 states and 4508 transitions. [2022-01-19 00:45:04,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 970 places, 823 transitions, 21603 flow [2022-01-19 00:45:04,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 946 places, 823 transitions, 21174 flow, removed 85 selfloop flow, removed 24 redundant places. [2022-01-19 00:45:04,973 INFO L242 Difference]: Finished difference. Result has 958 places, 737 transitions, 18112 flow [2022-01-19 00:45:04,973 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17395, PETRI_DIFFERENCE_MINUEND_PLACES=919, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=729, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=18112, PETRI_PLACES=958, PETRI_TRANSITIONS=737} [2022-01-19 00:45:04,974 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 771 predicate places. [2022-01-19 00:45:04,974 INFO L470 AbstractCegarLoop]: Abstraction has has 958 places, 737 transitions, 18112 flow [2022-01-19 00:45:04,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:04,974 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:04,974 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:04,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2022-01-19 00:45:04,974 INFO L402 AbstractCegarLoop]: === Iteration 275 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:04,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:04,975 INFO L85 PathProgramCache]: Analyzing trace with hash -130160226, now seen corresponding path program 227 times [2022-01-19 00:45:04,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:04,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482951946] [2022-01-19 00:45:04,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:04,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:05,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:05,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:05,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482951946] [2022-01-19 00:45:05,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482951946] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:05,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:05,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:05,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133295357] [2022-01-19 00:45:05,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:05,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:05,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:05,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:05,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:05,075 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:05,076 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 958 places, 737 transitions, 18112 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:05,076 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:05,076 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:05,076 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:06,673 INFO L129 PetriNetUnfolder]: 808/2973 cut-off events. [2022-01-19 00:45:06,673 INFO L130 PetriNetUnfolder]: For 77266/77279 co-relation queries the response was YES. [2022-01-19 00:45:06,740 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22103 conditions, 2973 events. 808/2973 cut-off events. For 77266/77279 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 24075 event pairs, 341 based on Foata normal form. 1/2869 useless extension candidates. Maximal degree in co-relation 21765. Up to 834 conditions per place. [2022-01-19 00:45:06,750 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 423 selfloop transitions, 196 changer transitions 56/816 dead transitions. [2022-01-19 00:45:06,750 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 973 places, 816 transitions, 21658 flow [2022-01-19 00:45:06,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:45:06,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:45:06,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4671 transitions. [2022-01-19 00:45:06,752 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7669950738916256 [2022-01-19 00:45:06,753 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4671 transitions. [2022-01-19 00:45:06,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4671 transitions. [2022-01-19 00:45:06,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:06,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4671 transitions. [2022-01-19 00:45:06,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 161.06896551724137) internal successors, (4671), 29 states have internal predecessors, (4671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:06,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:06,758 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:06,758 INFO L186 Difference]: Start difference. First operand has 958 places, 737 transitions, 18112 flow. Second operand 29 states and 4671 transitions. [2022-01-19 00:45:06,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 973 places, 816 transitions, 21658 flow [2022-01-19 00:45:07,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 959 places, 816 transitions, 21138 flow, removed 67 selfloop flow, removed 14 redundant places. [2022-01-19 00:45:07,691 INFO L242 Difference]: Finished difference. Result has 972 places, 748 transitions, 18495 flow [2022-01-19 00:45:07,691 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17653, PETRI_DIFFERENCE_MINUEND_PLACES=931, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=737, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=18495, PETRI_PLACES=972, PETRI_TRANSITIONS=748} [2022-01-19 00:45:07,692 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 785 predicate places. [2022-01-19 00:45:07,692 INFO L470 AbstractCegarLoop]: Abstraction has has 972 places, 748 transitions, 18495 flow [2022-01-19 00:45:07,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:07,692 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:07,692 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:07,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2022-01-19 00:45:07,692 INFO L402 AbstractCegarLoop]: === Iteration 276 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:07,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:07,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1369733580, now seen corresponding path program 228 times [2022-01-19 00:45:07,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:07,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915652986] [2022-01-19 00:45:07,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:07,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:07,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:07,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:07,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:07,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915652986] [2022-01-19 00:45:07,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915652986] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:07,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:07,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:07,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241517056] [2022-01-19 00:45:07,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:07,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:07,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:07,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:07,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:07,803 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:07,804 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 972 places, 748 transitions, 18495 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:07,804 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:07,804 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:07,804 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:09,335 INFO L129 PetriNetUnfolder]: 790/2912 cut-off events. [2022-01-19 00:45:09,335 INFO L130 PetriNetUnfolder]: For 76302/76315 co-relation queries the response was YES. [2022-01-19 00:45:09,400 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21451 conditions, 2912 events. 790/2912 cut-off events. For 76302/76315 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 23417 event pairs, 340 based on Foata normal form. 1/2810 useless extension candidates. Maximal degree in co-relation 21108. Up to 835 conditions per place. [2022-01-19 00:45:09,411 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 419 selfloop transitions, 180 changer transitions 61/801 dead transitions. [2022-01-19 00:45:09,411 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 985 places, 801 transitions, 21098 flow [2022-01-19 00:45:09,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 00:45:09,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 00:45:09,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4501 transitions. [2022-01-19 00:45:09,413 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7654761904761904 [2022-01-19 00:45:09,413 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4501 transitions. [2022-01-19 00:45:09,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4501 transitions. [2022-01-19 00:45:09,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:09,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4501 transitions. [2022-01-19 00:45:09,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.75) internal successors, (4501), 28 states have internal predecessors, (4501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:09,418 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:09,419 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:09,419 INFO L186 Difference]: Start difference. First operand has 972 places, 748 transitions, 18495 flow. Second operand 28 states and 4501 transitions. [2022-01-19 00:45:09,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 985 places, 801 transitions, 21098 flow [2022-01-19 00:45:10,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 971 places, 801 transitions, 20662 flow, removed 76 selfloop flow, removed 14 redundant places. [2022-01-19 00:45:10,255 INFO L242 Difference]: Finished difference. Result has 980 places, 724 transitions, 17758 flow [2022-01-19 00:45:10,256 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18093, PETRI_DIFFERENCE_MINUEND_PLACES=944, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=748, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=568, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=17758, PETRI_PLACES=980, PETRI_TRANSITIONS=724} [2022-01-19 00:45:10,256 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 793 predicate places. [2022-01-19 00:45:10,256 INFO L470 AbstractCegarLoop]: Abstraction has has 980 places, 724 transitions, 17758 flow [2022-01-19 00:45:10,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:10,256 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:10,256 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:10,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2022-01-19 00:45:10,256 INFO L402 AbstractCegarLoop]: === Iteration 277 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:10,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:10,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1946327382, now seen corresponding path program 229 times [2022-01-19 00:45:10,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:10,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778783986] [2022-01-19 00:45:10,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:10,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:10,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:10,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:10,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778783986] [2022-01-19 00:45:10,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778783986] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:10,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:10,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:10,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306795062] [2022-01-19 00:45:10,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:10,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:10,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:10,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:10,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:10,355 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:10,355 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 980 places, 724 transitions, 17758 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:10,356 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:10,356 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:10,356 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:11,931 INFO L129 PetriNetUnfolder]: 775/2870 cut-off events. [2022-01-19 00:45:11,931 INFO L130 PetriNetUnfolder]: For 73915/73928 co-relation queries the response was YES. [2022-01-19 00:45:11,995 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20926 conditions, 2870 events. 775/2870 cut-off events. For 73915/73928 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 23041 event pairs, 349 based on Foata normal form. 1/2766 useless extension candidates. Maximal degree in co-relation 20583. Up to 832 conditions per place. [2022-01-19 00:45:12,005 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 405 selfloop transitions, 167 changer transitions 61/774 dead transitions. [2022-01-19 00:45:12,006 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 976 places, 774 transitions, 20215 flow [2022-01-19 00:45:12,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:45:12,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:45:12,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4818 transitions. [2022-01-19 00:45:12,008 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7647619047619048 [2022-01-19 00:45:12,008 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4818 transitions. [2022-01-19 00:45:12,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4818 transitions. [2022-01-19 00:45:12,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:12,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4818 transitions. [2022-01-19 00:45:12,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.6) internal successors, (4818), 30 states have internal predecessors, (4818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:12,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:12,014 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:12,014 INFO L186 Difference]: Start difference. First operand has 980 places, 724 transitions, 17758 flow. Second operand 30 states and 4818 transitions. [2022-01-19 00:45:12,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 976 places, 774 transitions, 20215 flow [2022-01-19 00:45:12,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 945 places, 774 transitions, 19370 flow, removed 30 selfloop flow, removed 31 redundant places. [2022-01-19 00:45:12,875 INFO L242 Difference]: Finished difference. Result has 954 places, 702 transitions, 16671 flow [2022-01-19 00:45:12,876 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16998, PETRI_DIFFERENCE_MINUEND_PLACES=916, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=16671, PETRI_PLACES=954, PETRI_TRANSITIONS=702} [2022-01-19 00:45:12,876 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 767 predicate places. [2022-01-19 00:45:12,876 INFO L470 AbstractCegarLoop]: Abstraction has has 954 places, 702 transitions, 16671 flow [2022-01-19 00:45:12,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:12,876 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:12,876 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:12,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2022-01-19 00:45:12,877 INFO L402 AbstractCegarLoop]: === Iteration 278 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:12,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:12,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1330589584, now seen corresponding path program 230 times [2022-01-19 00:45:12,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:12,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562400639] [2022-01-19 00:45:12,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:12,877 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:12,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:12,977 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:12,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562400639] [2022-01-19 00:45:12,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562400639] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:12,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:12,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:12,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066682860] [2022-01-19 00:45:12,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:12,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:12,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:12,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:12,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:12,979 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:12,979 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 954 places, 702 transitions, 16671 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:12,979 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:12,979 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:12,980 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:14,570 INFO L129 PetriNetUnfolder]: 773/2885 cut-off events. [2022-01-19 00:45:14,570 INFO L130 PetriNetUnfolder]: For 70378/70391 co-relation queries the response was YES. [2022-01-19 00:45:14,628 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20523 conditions, 2885 events. 773/2885 cut-off events. For 70378/70391 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 23198 event pairs, 332 based on Foata normal form. 1/2787 useless extension candidates. Maximal degree in co-relation 20189. Up to 831 conditions per place. [2022-01-19 00:45:14,638 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 401 selfloop transitions, 187 changer transitions 72/801 dead transitions. [2022-01-19 00:45:14,638 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 962 places, 801 transitions, 20502 flow [2022-01-19 00:45:14,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 00:45:14,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 00:45:14,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5770 transitions. [2022-01-19 00:45:14,641 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7632275132275133 [2022-01-19 00:45:14,641 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5770 transitions. [2022-01-19 00:45:14,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5770 transitions. [2022-01-19 00:45:14,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:14,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5770 transitions. [2022-01-19 00:45:14,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.27777777777777) internal successors, (5770), 36 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:14,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:14,647 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:14,648 INFO L186 Difference]: Start difference. First operand has 954 places, 702 transitions, 16671 flow. Second operand 36 states and 5770 transitions. [2022-01-19 00:45:14,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 962 places, 801 transitions, 20502 flow [2022-01-19 00:45:15,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 932 places, 801 transitions, 19839 flow, removed 49 selfloop flow, removed 30 redundant places. [2022-01-19 00:45:15,360 INFO L242 Difference]: Finished difference. Result has 954 places, 707 transitions, 16754 flow [2022-01-19 00:45:15,360 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16122, PETRI_DIFFERENCE_MINUEND_PLACES=897, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=702, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=519, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=16754, PETRI_PLACES=954, PETRI_TRANSITIONS=707} [2022-01-19 00:45:15,361 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 767 predicate places. [2022-01-19 00:45:15,361 INFO L470 AbstractCegarLoop]: Abstraction has has 954 places, 707 transitions, 16754 flow [2022-01-19 00:45:15,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:15,361 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:15,361 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:15,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2022-01-19 00:45:15,361 INFO L402 AbstractCegarLoop]: === Iteration 279 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:15,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:15,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1516969922, now seen corresponding path program 231 times [2022-01-19 00:45:15,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:15,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368777817] [2022-01-19 00:45:15,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:15,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:15,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:15,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:15,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368777817] [2022-01-19 00:45:15,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368777817] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:15,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:15,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:15,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473542755] [2022-01-19 00:45:15,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:15,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:15,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:15,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:15,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:15,460 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:15,461 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 954 places, 707 transitions, 16754 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:15,461 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:15,461 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:15,461 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:17,009 INFO L129 PetriNetUnfolder]: 748/2788 cut-off events. [2022-01-19 00:45:17,009 INFO L130 PetriNetUnfolder]: For 65516/65529 co-relation queries the response was YES. [2022-01-19 00:45:17,066 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19686 conditions, 2788 events. 748/2788 cut-off events. For 65516/65529 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 22070 event pairs, 320 based on Foata normal form. 1/2692 useless extension candidates. Maximal degree in co-relation 19348. Up to 826 conditions per place. [2022-01-19 00:45:17,076 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 378 selfloop transitions, 178 changer transitions 64/761 dead transitions. [2022-01-19 00:45:17,076 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 961 places, 761 transitions, 19217 flow [2022-01-19 00:45:17,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:45:17,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:45:17,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4810 transitions. [2022-01-19 00:45:17,079 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7634920634920634 [2022-01-19 00:45:17,079 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4810 transitions. [2022-01-19 00:45:17,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4810 transitions. [2022-01-19 00:45:17,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:17,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4810 transitions. [2022-01-19 00:45:17,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.33333333333334) internal successors, (4810), 30 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:17,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:17,085 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:17,085 INFO L186 Difference]: Start difference. First operand has 954 places, 707 transitions, 16754 flow. Second operand 30 states and 4810 transitions. [2022-01-19 00:45:17,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 961 places, 761 transitions, 19217 flow [2022-01-19 00:45:17,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 927 places, 761 transitions, 18602 flow, removed 119 selfloop flow, removed 34 redundant places. [2022-01-19 00:45:17,803 INFO L242 Difference]: Finished difference. Result has 938 places, 679 transitions, 15760 flow [2022-01-19 00:45:17,803 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16253, PETRI_DIFFERENCE_MINUEND_PLACES=898, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=15760, PETRI_PLACES=938, PETRI_TRANSITIONS=679} [2022-01-19 00:45:17,804 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 751 predicate places. [2022-01-19 00:45:17,804 INFO L470 AbstractCegarLoop]: Abstraction has has 938 places, 679 transitions, 15760 flow [2022-01-19 00:45:17,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:17,804 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:17,804 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:17,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2022-01-19 00:45:17,804 INFO L402 AbstractCegarLoop]: === Iteration 280 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:17,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:17,804 INFO L85 PathProgramCache]: Analyzing trace with hash -2058007792, now seen corresponding path program 232 times [2022-01-19 00:45:17,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:17,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164255892] [2022-01-19 00:45:17,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:17,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:17,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:17,902 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:17,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164255892] [2022-01-19 00:45:17,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164255892] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:17,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:17,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:17,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889958058] [2022-01-19 00:45:17,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:17,903 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:17,903 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:17,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:17,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:17,904 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:17,905 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 938 places, 679 transitions, 15760 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:17,905 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:17,905 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:17,905 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:19,462 INFO L129 PetriNetUnfolder]: 755/2807 cut-off events. [2022-01-19 00:45:19,462 INFO L130 PetriNetUnfolder]: For 65217/65230 co-relation queries the response was YES. [2022-01-19 00:45:19,511 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19715 conditions, 2807 events. 755/2807 cut-off events. For 65217/65230 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 22281 event pairs, 323 based on Foata normal form. 1/2709 useless extension candidates. Maximal degree in co-relation 19394. Up to 827 conditions per place. [2022-01-19 00:45:19,519 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 386 selfloop transitions, 178 changer transitions 56/761 dead transitions. [2022-01-19 00:45:19,519 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 931 places, 761 transitions, 19200 flow [2022-01-19 00:45:19,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:45:19,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:45:19,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4665 transitions. [2022-01-19 00:45:19,522 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7660098522167488 [2022-01-19 00:45:19,522 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4665 transitions. [2022-01-19 00:45:19,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4665 transitions. [2022-01-19 00:45:19,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:19,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4665 transitions. [2022-01-19 00:45:19,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.86206896551724) internal successors, (4665), 29 states have internal predecessors, (4665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:19,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:19,527 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:19,527 INFO L186 Difference]: Start difference. First operand has 938 places, 679 transitions, 15760 flow. Second operand 29 states and 4665 transitions. [2022-01-19 00:45:19,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 931 places, 761 transitions, 19200 flow [2022-01-19 00:45:20,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 896 places, 761 transitions, 18269 flow, removed 64 selfloop flow, removed 35 redundant places. [2022-01-19 00:45:20,138 INFO L242 Difference]: Finished difference. Result has 910 places, 691 transitions, 15805 flow [2022-01-19 00:45:20,139 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15018, PETRI_DIFFERENCE_MINUEND_PLACES=868, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=679, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=507, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=15805, PETRI_PLACES=910, PETRI_TRANSITIONS=691} [2022-01-19 00:45:20,139 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 723 predicate places. [2022-01-19 00:45:20,139 INFO L470 AbstractCegarLoop]: Abstraction has has 910 places, 691 transitions, 15805 flow [2022-01-19 00:45:20,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:20,139 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:20,140 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:20,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable279 [2022-01-19 00:45:20,140 INFO L402 AbstractCegarLoop]: === Iteration 281 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:20,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:20,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1361885928, now seen corresponding path program 233 times [2022-01-19 00:45:20,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:20,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570629192] [2022-01-19 00:45:20,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:20,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:20,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:20,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:20,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570629192] [2022-01-19 00:45:20,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570629192] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:20,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:20,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:20,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874234824] [2022-01-19 00:45:20,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:20,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:20,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:20,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:20,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:20,243 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:20,243 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 910 places, 691 transitions, 15805 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:20,244 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:20,244 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:20,244 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:21,647 INFO L129 PetriNetUnfolder]: 730/2736 cut-off events. [2022-01-19 00:45:21,647 INFO L130 PetriNetUnfolder]: For 56469/56482 co-relation queries the response was YES. [2022-01-19 00:45:21,693 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18575 conditions, 2736 events. 730/2736 cut-off events. For 56469/56482 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 21515 event pairs, 319 based on Foata normal form. 1/2639 useless extension candidates. Maximal degree in co-relation 18262. Up to 828 conditions per place. [2022-01-19 00:45:21,701 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 288 selfloop transitions, 240 changer transitions 62/731 dead transitions. [2022-01-19 00:45:21,701 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 922 places, 731 transitions, 17710 flow [2022-01-19 00:45:21,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 00:45:21,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 00:45:21,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4334 transitions. [2022-01-19 00:45:21,704 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7643738977072311 [2022-01-19 00:45:21,704 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4334 transitions. [2022-01-19 00:45:21,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4334 transitions. [2022-01-19 00:45:21,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:21,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4334 transitions. [2022-01-19 00:45:21,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.5185185185185) internal successors, (4334), 27 states have internal predecessors, (4334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:21,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:21,709 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:21,709 INFO L186 Difference]: Start difference. First operand has 910 places, 691 transitions, 15805 flow. Second operand 27 states and 4334 transitions. [2022-01-19 00:45:21,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 922 places, 731 transitions, 17710 flow [2022-01-19 00:45:22,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 909 places, 731 transitions, 17353 flow, removed 63 selfloop flow, removed 13 redundant places. [2022-01-19 00:45:22,300 INFO L242 Difference]: Finished difference. Result has 916 places, 654 transitions, 14806 flow [2022-01-19 00:45:22,301 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15473, PETRI_DIFFERENCE_MINUEND_PLACES=883, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=240, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=451, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=14806, PETRI_PLACES=916, PETRI_TRANSITIONS=654} [2022-01-19 00:45:22,301 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 729 predicate places. [2022-01-19 00:45:22,301 INFO L470 AbstractCegarLoop]: Abstraction has has 916 places, 654 transitions, 14806 flow [2022-01-19 00:45:22,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:22,301 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:22,301 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:22,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280 [2022-01-19 00:45:22,301 INFO L402 AbstractCegarLoop]: === Iteration 282 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:22,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:22,302 INFO L85 PathProgramCache]: Analyzing trace with hash 2093778448, now seen corresponding path program 234 times [2022-01-19 00:45:22,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:22,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341894386] [2022-01-19 00:45:22,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:22,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:22,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:22,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:22,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341894386] [2022-01-19 00:45:22,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341894386] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:22,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:22,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:22,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394415122] [2022-01-19 00:45:22,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:22,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:22,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:22,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:22,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:22,397 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:22,398 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 916 places, 654 transitions, 14806 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:22,398 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:22,398 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:22,398 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:23,728 INFO L129 PetriNetUnfolder]: 723/2721 cut-off events. [2022-01-19 00:45:23,729 INFO L130 PetriNetUnfolder]: For 57837/57850 co-relation queries the response was YES. [2022-01-19 00:45:23,782 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18429 conditions, 2721 events. 723/2721 cut-off events. For 57837/57850 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 21448 event pairs, 330 based on Foata normal form. 1/2623 useless extension candidates. Maximal degree in co-relation 18117. Up to 828 conditions per place. [2022-01-19 00:45:23,790 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 345 selfloop transitions, 188 changer transitions 58/732 dead transitions. [2022-01-19 00:45:23,791 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 905 places, 732 transitions, 17798 flow [2022-01-19 00:45:23,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:45:23,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:45:23,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4821 transitions. [2022-01-19 00:45:23,793 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7652380952380953 [2022-01-19 00:45:23,793 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4821 transitions. [2022-01-19 00:45:23,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4821 transitions. [2022-01-19 00:45:23,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:23,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4821 transitions. [2022-01-19 00:45:23,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.7) internal successors, (4821), 30 states have internal predecessors, (4821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:23,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:23,799 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:23,799 INFO L186 Difference]: Start difference. First operand has 916 places, 654 transitions, 14806 flow. Second operand 30 states and 4821 transitions. [2022-01-19 00:45:23,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 905 places, 732 transitions, 17798 flow [2022-01-19 00:45:24,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 867 places, 732 transitions, 16084 flow, removed 30 selfloop flow, removed 38 redundant places. [2022-01-19 00:45:24,330 INFO L242 Difference]: Finished difference. Result has 881 places, 659 transitions, 13779 flow [2022-01-19 00:45:24,331 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13247, PETRI_DIFFERENCE_MINUEND_PLACES=838, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=13779, PETRI_PLACES=881, PETRI_TRANSITIONS=659} [2022-01-19 00:45:24,331 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 694 predicate places. [2022-01-19 00:45:24,331 INFO L470 AbstractCegarLoop]: Abstraction has has 881 places, 659 transitions, 13779 flow [2022-01-19 00:45:24,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:24,331 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:24,331 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:24,331 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281 [2022-01-19 00:45:24,331 INFO L402 AbstractCegarLoop]: === Iteration 283 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:24,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:24,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1815089882, now seen corresponding path program 235 times [2022-01-19 00:45:24,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:24,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368955179] [2022-01-19 00:45:24,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:24,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:24,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:24,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:24,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368955179] [2022-01-19 00:45:24,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368955179] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:24,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:24,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:24,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516410801] [2022-01-19 00:45:24,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:24,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:24,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:24,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:24,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:24,430 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:24,430 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 881 places, 659 transitions, 13779 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:24,430 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:24,430 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:24,431 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:25,730 INFO L129 PetriNetUnfolder]: 717/2702 cut-off events. [2022-01-19 00:45:25,730 INFO L130 PetriNetUnfolder]: For 48158/48171 co-relation queries the response was YES. [2022-01-19 00:45:25,784 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17456 conditions, 2702 events. 717/2702 cut-off events. For 48158/48171 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 21324 event pairs, 319 based on Foata normal form. 1/2604 useless extension candidates. Maximal degree in co-relation 17152. Up to 828 conditions per place. [2022-01-19 00:45:25,792 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 347 selfloop transitions, 187 changer transitions 58/733 dead transitions. [2022-01-19 00:45:25,792 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 895 places, 733 transitions, 16630 flow [2022-01-19 00:45:25,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:45:25,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:45:25,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4821 transitions. [2022-01-19 00:45:25,794 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7652380952380953 [2022-01-19 00:45:25,794 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4821 transitions. [2022-01-19 00:45:25,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4821 transitions. [2022-01-19 00:45:25,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:25,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4821 transitions. [2022-01-19 00:45:25,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.7) internal successors, (4821), 30 states have internal predecessors, (4821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:25,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:25,920 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:25,920 INFO L186 Difference]: Start difference. First operand has 881 places, 659 transitions, 13779 flow. Second operand 30 states and 4821 transitions. [2022-01-19 00:45:25,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 895 places, 733 transitions, 16630 flow [2022-01-19 00:45:26,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 881 places, 733 transitions, 16289 flow, removed 76 selfloop flow, removed 14 redundant places. [2022-01-19 00:45:26,400 INFO L242 Difference]: Finished difference. Result has 892 places, 661 transitions, 13953 flow [2022-01-19 00:45:26,400 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13512, PETRI_DIFFERENCE_MINUEND_PLACES=852, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=13953, PETRI_PLACES=892, PETRI_TRANSITIONS=661} [2022-01-19 00:45:26,400 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 705 predicate places. [2022-01-19 00:45:26,400 INFO L470 AbstractCegarLoop]: Abstraction has has 892 places, 661 transitions, 13953 flow [2022-01-19 00:45:26,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:26,401 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:26,401 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:26,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable282 [2022-01-19 00:45:26,401 INFO L402 AbstractCegarLoop]: === Iteration 284 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:26,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:26,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1831656044, now seen corresponding path program 236 times [2022-01-19 00:45:26,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:26,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036729472] [2022-01-19 00:45:26,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:26,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:26,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:26,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:26,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036729472] [2022-01-19 00:45:26,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036729472] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:26,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:26,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:26,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439619340] [2022-01-19 00:45:26,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:26,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:26,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:26,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:26,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:26,502 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:26,503 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 892 places, 661 transitions, 13953 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:26,503 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:26,503 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:26,503 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:27,762 INFO L129 PetriNetUnfolder]: 697/2646 cut-off events. [2022-01-19 00:45:27,762 INFO L130 PetriNetUnfolder]: For 51366/51379 co-relation queries the response was YES. [2022-01-19 00:45:27,806 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16925 conditions, 2646 events. 697/2646 cut-off events. For 51366/51379 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 20607 event pairs, 312 based on Foata normal form. 1/2551 useless extension candidates. Maximal degree in co-relation 16620. Up to 827 conditions per place. [2022-01-19 00:45:27,814 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 340 selfloop transitions, 166 changer transitions 60/707 dead transitions. [2022-01-19 00:45:27,814 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 904 places, 707 transitions, 16107 flow [2022-01-19 00:45:27,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 00:45:27,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 00:45:27,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4497 transitions. [2022-01-19 00:45:27,816 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764795918367347 [2022-01-19 00:45:27,816 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4497 transitions. [2022-01-19 00:45:27,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4497 transitions. [2022-01-19 00:45:27,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:27,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4497 transitions. [2022-01-19 00:45:27,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.60714285714286) internal successors, (4497), 28 states have internal predecessors, (4497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:27,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:27,821 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:27,821 INFO L186 Difference]: Start difference. First operand has 892 places, 661 transitions, 13953 flow. Second operand 28 states and 4497 transitions. [2022-01-19 00:45:27,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 904 places, 707 transitions, 16107 flow [2022-01-19 00:45:28,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 889 places, 707 transitions, 15705 flow, removed 50 selfloop flow, removed 15 redundant places. [2022-01-19 00:45:28,328 INFO L242 Difference]: Finished difference. Result has 898 places, 636 transitions, 13304 flow [2022-01-19 00:45:28,328 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13585, PETRI_DIFFERENCE_MINUEND_PLACES=862, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=661, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=495, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=13304, PETRI_PLACES=898, PETRI_TRANSITIONS=636} [2022-01-19 00:45:28,329 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 711 predicate places. [2022-01-19 00:45:28,329 INFO L470 AbstractCegarLoop]: Abstraction has has 898 places, 636 transitions, 13304 flow [2022-01-19 00:45:28,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:28,329 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:28,329 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:28,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable283 [2022-01-19 00:45:28,329 INFO L402 AbstractCegarLoop]: === Iteration 285 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:28,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:28,329 INFO L85 PathProgramCache]: Analyzing trace with hash 2065755434, now seen corresponding path program 237 times [2022-01-19 00:45:28,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:28,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491198865] [2022-01-19 00:45:28,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:28,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:28,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:28,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:28,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491198865] [2022-01-19 00:45:28,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491198865] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:28,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:28,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:28,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387390829] [2022-01-19 00:45:28,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:28,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:28,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:28,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:28,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:28,446 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:28,447 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 898 places, 636 transitions, 13304 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:28,447 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:28,447 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:28,447 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:29,716 INFO L129 PetriNetUnfolder]: 689/2618 cut-off events. [2022-01-19 00:45:29,717 INFO L130 PetriNetUnfolder]: For 51613/51626 co-relation queries the response was YES. [2022-01-19 00:45:29,766 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16719 conditions, 2618 events. 689/2618 cut-off events. For 51613/51626 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 20385 event pairs, 322 based on Foata normal form. 1/2524 useless extension candidates. Maximal degree in co-relation 16415. Up to 827 conditions per place. [2022-01-19 00:45:29,774 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 328 selfloop transitions, 165 changer transitions 58/692 dead transitions. [2022-01-19 00:45:29,774 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 894 places, 692 transitions, 15745 flow [2022-01-19 00:45:29,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:45:29,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:45:29,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4809 transitions. [2022-01-19 00:45:29,776 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7633333333333333 [2022-01-19 00:45:29,776 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4809 transitions. [2022-01-19 00:45:29,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4809 transitions. [2022-01-19 00:45:29,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:29,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4809 transitions. [2022-01-19 00:45:29,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.3) internal successors, (4809), 30 states have internal predecessors, (4809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:29,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:29,782 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:29,782 INFO L186 Difference]: Start difference. First operand has 898 places, 636 transitions, 13304 flow. Second operand 30 states and 4809 transitions. [2022-01-19 00:45:29,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 894 places, 692 transitions, 15745 flow [2022-01-19 00:45:30,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 860 places, 692 transitions, 14745 flow, removed 30 selfloop flow, removed 34 redundant places. [2022-01-19 00:45:30,235 INFO L242 Difference]: Finished difference. Result has 872 places, 623 transitions, 12509 flow [2022-01-19 00:45:30,235 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12419, PETRI_DIFFERENCE_MINUEND_PLACES=831, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=12509, PETRI_PLACES=872, PETRI_TRANSITIONS=623} [2022-01-19 00:45:30,235 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 685 predicate places. [2022-01-19 00:45:30,235 INFO L470 AbstractCegarLoop]: Abstraction has has 872 places, 623 transitions, 12509 flow [2022-01-19 00:45:30,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:30,236 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:30,236 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:30,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable284 [2022-01-19 00:45:30,236 INFO L402 AbstractCegarLoop]: === Iteration 286 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:30,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:30,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1405026256, now seen corresponding path program 238 times [2022-01-19 00:45:30,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:30,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160683022] [2022-01-19 00:45:30,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:30,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:30,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:30,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:30,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160683022] [2022-01-19 00:45:30,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160683022] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:30,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:30,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:30,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553831162] [2022-01-19 00:45:30,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:30,341 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:30,341 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:30,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:30,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:30,343 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:30,343 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 872 places, 623 transitions, 12509 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:30,343 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:30,343 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:30,343 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:31,540 INFO L129 PetriNetUnfolder]: 662/2523 cut-off events. [2022-01-19 00:45:31,540 INFO L130 PetriNetUnfolder]: For 40439/40452 co-relation queries the response was YES. [2022-01-19 00:45:31,589 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15455 conditions, 2523 events. 662/2523 cut-off events. For 40439/40452 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 19419 event pairs, 312 based on Foata normal form. 1/2429 useless extension candidates. Maximal degree in co-relation 15157. Up to 821 conditions per place. [2022-01-19 00:45:31,596 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 310 selfloop transitions, 139 changer transitions 61/651 dead transitions. [2022-01-19 00:45:31,596 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 873 places, 651 transitions, 13911 flow [2022-01-19 00:45:31,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:45:31,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:45:31,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4639 transitions. [2022-01-19 00:45:31,598 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617405582922824 [2022-01-19 00:45:31,598 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4639 transitions. [2022-01-19 00:45:31,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4639 transitions. [2022-01-19 00:45:31,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:31,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4639 transitions. [2022-01-19 00:45:31,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 159.9655172413793) internal successors, (4639), 29 states have internal predecessors, (4639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:31,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:31,604 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:31,604 INFO L186 Difference]: Start difference. First operand has 872 places, 623 transitions, 12509 flow. Second operand 29 states and 4639 transitions. [2022-01-19 00:45:31,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 873 places, 651 transitions, 13911 flow [2022-01-19 00:45:32,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 842 places, 651 transitions, 13328 flow, removed 25 selfloop flow, removed 31 redundant places. [2022-01-19 00:45:32,021 INFO L242 Difference]: Finished difference. Result has 849 places, 579 transitions, 11049 flow [2022-01-19 00:45:32,021 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11953, PETRI_DIFFERENCE_MINUEND_PLACES=814, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=11049, PETRI_PLACES=849, PETRI_TRANSITIONS=579} [2022-01-19 00:45:32,021 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 662 predicate places. [2022-01-19 00:45:32,022 INFO L470 AbstractCegarLoop]: Abstraction has has 849 places, 579 transitions, 11049 flow [2022-01-19 00:45:32,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:32,022 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:32,022 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:32,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable285 [2022-01-19 00:45:32,022 INFO L402 AbstractCegarLoop]: === Iteration 287 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:32,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:32,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1853911364, now seen corresponding path program 239 times [2022-01-19 00:45:32,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:32,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433351072] [2022-01-19 00:45:32,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:32,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:32,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:32,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:32,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433351072] [2022-01-19 00:45:32,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433351072] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:32,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:32,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:32,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777375301] [2022-01-19 00:45:32,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:32,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:32,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:32,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:32,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:32,126 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:32,127 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 849 places, 579 transitions, 11049 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:32,127 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:32,127 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:32,127 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:33,324 INFO L129 PetriNetUnfolder]: 656/2519 cut-off events. [2022-01-19 00:45:33,324 INFO L130 PetriNetUnfolder]: For 39260/39273 co-relation queries the response was YES. [2022-01-19 00:45:33,372 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15129 conditions, 2519 events. 656/2519 cut-off events. For 39260/39273 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 19411 event pairs, 319 based on Foata normal form. 1/2426 useless extension candidates. Maximal degree in co-relation 14844. Up to 818 conditions per place. [2022-01-19 00:45:33,379 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 322 selfloop transitions, 127 changer transitions 58/648 dead transitions. [2022-01-19 00:45:33,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 826 places, 648 transitions, 13608 flow [2022-01-19 00:45:33,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:45:33,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:45:33,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4819 transitions. [2022-01-19 00:45:33,381 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7649206349206349 [2022-01-19 00:45:33,382 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4819 transitions. [2022-01-19 00:45:33,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4819 transitions. [2022-01-19 00:45:33,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:33,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4819 transitions. [2022-01-19 00:45:33,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.63333333333333) internal successors, (4819), 30 states have internal predecessors, (4819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:33,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:33,387 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:33,387 INFO L186 Difference]: Start difference. First operand has 849 places, 579 transitions, 11049 flow. Second operand 30 states and 4819 transitions. [2022-01-19 00:45:33,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 826 places, 648 transitions, 13608 flow [2022-01-19 00:45:33,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 792 places, 648 transitions, 12467 flow, removed 26 selfloop flow, removed 34 redundant places. [2022-01-19 00:45:33,753 INFO L242 Difference]: Finished difference. Result has 799 places, 578 transitions, 10271 flow [2022-01-19 00:45:33,753 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10038, PETRI_DIFFERENCE_MINUEND_PLACES=763, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=579, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=10271, PETRI_PLACES=799, PETRI_TRANSITIONS=578} [2022-01-19 00:45:33,753 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 612 predicate places. [2022-01-19 00:45:33,753 INFO L470 AbstractCegarLoop]: Abstraction has has 799 places, 578 transitions, 10271 flow [2022-01-19 00:45:33,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:33,754 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:33,754 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:33,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable286 [2022-01-19 00:45:33,754 INFO L402 AbstractCegarLoop]: === Iteration 288 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:33,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:33,754 INFO L85 PathProgramCache]: Analyzing trace with hash -681707706, now seen corresponding path program 240 times [2022-01-19 00:45:33,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:33,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131633177] [2022-01-19 00:45:33,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:33,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:33,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:33,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:33,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131633177] [2022-01-19 00:45:33,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131633177] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:33,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:33,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:33,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512483802] [2022-01-19 00:45:33,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:33,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:33,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:33,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:33,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:33,850 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:33,851 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 799 places, 578 transitions, 10271 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:33,851 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:33,851 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:33,851 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:34,944 INFO L129 PetriNetUnfolder]: 641/2470 cut-off events. [2022-01-19 00:45:34,944 INFO L130 PetriNetUnfolder]: For 34067/34080 co-relation queries the response was YES. [2022-01-19 00:45:34,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14032 conditions, 2470 events. 641/2470 cut-off events. For 34067/34080 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 18917 event pairs, 298 based on Foata normal form. 1/2381 useless extension candidates. Maximal degree in co-relation 13760. Up to 814 conditions per place. [2022-01-19 00:45:34,992 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 331 selfloop transitions, 114 changer transitions 63/649 dead transitions. [2022-01-19 00:45:34,992 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 813 places, 649 transitions, 12274 flow [2022-01-19 00:45:34,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:45:34,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:45:34,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4806 transitions. [2022-01-19 00:45:34,995 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628571428571429 [2022-01-19 00:45:34,995 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4806 transitions. [2022-01-19 00:45:34,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4806 transitions. [2022-01-19 00:45:34,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:34,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4806 transitions. [2022-01-19 00:45:34,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.2) internal successors, (4806), 30 states have internal predecessors, (4806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:35,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:35,000 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:35,000 INFO L186 Difference]: Start difference. First operand has 799 places, 578 transitions, 10271 flow. Second operand 30 states and 4806 transitions. [2022-01-19 00:45:35,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 813 places, 649 transitions, 12274 flow [2022-01-19 00:45:35,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 786 places, 649 transitions, 11807 flow, removed 64 selfloop flow, removed 27 redundant places. [2022-01-19 00:45:35,314 INFO L242 Difference]: Finished difference. Result has 796 places, 553 transitions, 9556 flow [2022-01-19 00:45:35,315 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9830, PETRI_DIFFERENCE_MINUEND_PLACES=757, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=9556, PETRI_PLACES=796, PETRI_TRANSITIONS=553} [2022-01-19 00:45:35,315 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 609 predicate places. [2022-01-19 00:45:35,315 INFO L470 AbstractCegarLoop]: Abstraction has has 796 places, 553 transitions, 9556 flow [2022-01-19 00:45:35,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:35,315 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:35,315 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:35,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable287 [2022-01-19 00:45:35,316 INFO L402 AbstractCegarLoop]: === Iteration 289 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:35,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:35,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1626717332, now seen corresponding path program 241 times [2022-01-19 00:45:35,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:35,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871632976] [2022-01-19 00:45:35,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:35,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:35,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:35,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:35,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871632976] [2022-01-19 00:45:35,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871632976] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:35,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:35,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:35,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436785043] [2022-01-19 00:45:35,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:35,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:35,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:35,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:35,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:35,428 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:35,429 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 796 places, 553 transitions, 9556 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:35,429 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:35,429 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:35,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:36,464 INFO L129 PetriNetUnfolder]: 610/2354 cut-off events. [2022-01-19 00:45:36,464 INFO L130 PetriNetUnfolder]: For 28125/28138 co-relation queries the response was YES. [2022-01-19 00:45:36,496 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13118 conditions, 2354 events. 610/2354 cut-off events. For 28125/28138 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 17849 event pairs, 294 based on Foata normal form. 1/2264 useless extension candidates. Maximal degree in co-relation 12855. Up to 805 conditions per place. [2022-01-19 00:45:36,502 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 309 selfloop transitions, 85 changer transitions 65/600 dead transitions. [2022-01-19 00:45:36,502 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 790 places, 600 transitions, 10783 flow [2022-01-19 00:45:36,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 00:45:36,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 00:45:36,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4476 transitions. [2022-01-19 00:45:36,504 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612244897959184 [2022-01-19 00:45:36,504 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4476 transitions. [2022-01-19 00:45:36,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4476 transitions. [2022-01-19 00:45:36,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:36,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4476 transitions. [2022-01-19 00:45:36,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 159.85714285714286) internal successors, (4476), 28 states have internal predecessors, (4476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:36,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:36,509 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:36,509 INFO L186 Difference]: Start difference. First operand has 796 places, 553 transitions, 9556 flow. Second operand 28 states and 4476 transitions. [2022-01-19 00:45:36,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 790 places, 600 transitions, 10783 flow [2022-01-19 00:45:36,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 759 places, 600 transitions, 10204 flow, removed 22 selfloop flow, removed 31 redundant places. [2022-01-19 00:45:36,791 INFO L242 Difference]: Finished difference. Result has 764 places, 502 transitions, 7970 flow [2022-01-19 00:45:36,792 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8995, PETRI_DIFFERENCE_MINUEND_PLACES=732, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=553, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=7970, PETRI_PLACES=764, PETRI_TRANSITIONS=502} [2022-01-19 00:45:36,792 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 577 predicate places. [2022-01-19 00:45:36,792 INFO L470 AbstractCegarLoop]: Abstraction has has 764 places, 502 transitions, 7970 flow [2022-01-19 00:45:36,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:36,792 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:36,792 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:36,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable288 [2022-01-19 00:45:36,792 INFO L402 AbstractCegarLoop]: === Iteration 290 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:36,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:36,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1293276046, now seen corresponding path program 242 times [2022-01-19 00:45:36,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:36,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947980927] [2022-01-19 00:45:36,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:36,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:36,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:36,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:36,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947980927] [2022-01-19 00:45:36,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947980927] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:36,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:36,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:36,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825107556] [2022-01-19 00:45:36,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:36,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:36,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:36,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:36,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:36,893 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:36,894 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 764 places, 502 transitions, 7970 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:36,894 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:36,894 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:36,894 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:37,945 INFO L129 PetriNetUnfolder]: 609/2357 cut-off events. [2022-01-19 00:45:37,945 INFO L130 PetriNetUnfolder]: For 26736/26749 co-relation queries the response was YES. [2022-01-19 00:45:37,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12670 conditions, 2357 events. 609/2357 cut-off events. For 26736/26749 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 17821 event pairs, 298 based on Foata normal form. 1/2270 useless extension candidates. Maximal degree in co-relation 12420. Up to 805 conditions per place. [2022-01-19 00:45:37,992 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 294 selfloop transitions, 89 changer transitions 70/594 dead transitions. [2022-01-19 00:45:37,992 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 737 places, 594 transitions, 10429 flow [2022-01-19 00:45:37,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 00:45:37,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 00:45:37,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5598 transitions. [2022-01-19 00:45:37,994 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616326530612245 [2022-01-19 00:45:37,994 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5598 transitions. [2022-01-19 00:45:37,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5598 transitions. [2022-01-19 00:45:37,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:37,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5598 transitions. [2022-01-19 00:45:37,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 159.94285714285715) internal successors, (5598), 35 states have internal predecessors, (5598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:38,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:38,001 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:38,001 INFO L186 Difference]: Start difference. First operand has 764 places, 502 transitions, 7970 flow. Second operand 35 states and 5598 transitions. [2022-01-19 00:45:38,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 737 places, 594 transitions, 10429 flow [2022-01-19 00:45:38,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 708 places, 594 transitions, 9486 flow, removed 28 selfloop flow, removed 29 redundant places. [2022-01-19 00:45:38,237 INFO L242 Difference]: Finished difference. Result has 725 places, 497 transitions, 7312 flow [2022-01-19 00:45:38,237 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7192, PETRI_DIFFERENCE_MINUEND_PLACES=674, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=413, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=7312, PETRI_PLACES=725, PETRI_TRANSITIONS=497} [2022-01-19 00:45:38,237 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 538 predicate places. [2022-01-19 00:45:38,238 INFO L470 AbstractCegarLoop]: Abstraction has has 725 places, 497 transitions, 7312 flow [2022-01-19 00:45:38,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:38,238 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:38,238 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:38,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable289 [2022-01-19 00:45:38,238 INFO L402 AbstractCegarLoop]: === Iteration 291 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:38,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:38,238 INFO L85 PathProgramCache]: Analyzing trace with hash -674375430, now seen corresponding path program 243 times [2022-01-19 00:45:38,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:38,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464442111] [2022-01-19 00:45:38,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:38,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:38,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:38,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:38,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464442111] [2022-01-19 00:45:38,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464442111] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:38,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:38,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:38,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878298927] [2022-01-19 00:45:38,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:38,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:38,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:38,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:38,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:38,337 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:38,337 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 725 places, 497 transitions, 7312 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:38,337 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:38,337 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:38,337 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:39,330 INFO L129 PetriNetUnfolder]: 598/2329 cut-off events. [2022-01-19 00:45:39,330 INFO L130 PetriNetUnfolder]: For 24119/24132 co-relation queries the response was YES. [2022-01-19 00:45:39,363 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11679 conditions, 2329 events. 598/2329 cut-off events. For 24119/24132 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 17514 event pairs, 302 based on Foata normal form. 1/2242 useless extension candidates. Maximal degree in co-relation 11428. Up to 803 conditions per place. [2022-01-19 00:45:39,368 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 287 selfloop transitions, 78 changer transitions 62/568 dead transitions. [2022-01-19 00:45:39,368 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 732 places, 568 transitions, 9235 flow [2022-01-19 00:45:39,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:45:39,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:45:39,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4653 transitions. [2022-01-19 00:45:39,371 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7640394088669951 [2022-01-19 00:45:39,371 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4653 transitions. [2022-01-19 00:45:39,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4653 transitions. [2022-01-19 00:45:39,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:39,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4653 transitions. [2022-01-19 00:45:39,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.44827586206895) internal successors, (4653), 29 states have internal predecessors, (4653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:39,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:39,376 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:39,376 INFO L186 Difference]: Start difference. First operand has 725 places, 497 transitions, 7312 flow. Second operand 29 states and 4653 transitions. [2022-01-19 00:45:39,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 732 places, 568 transitions, 9235 flow [2022-01-19 00:45:39,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 695 places, 568 transitions, 8860 flow, removed 37 selfloop flow, removed 37 redundant places. [2022-01-19 00:45:39,567 INFO L242 Difference]: Finished difference. Result has 706 places, 484 transitions, 6931 flow [2022-01-19 00:45:39,567 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6997, PETRI_DIFFERENCE_MINUEND_PLACES=667, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6931, PETRI_PLACES=706, PETRI_TRANSITIONS=484} [2022-01-19 00:45:39,567 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 519 predicate places. [2022-01-19 00:45:39,567 INFO L470 AbstractCegarLoop]: Abstraction has has 706 places, 484 transitions, 6931 flow [2022-01-19 00:45:39,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:39,568 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:39,568 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:39,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable290 [2022-01-19 00:45:39,568 INFO L402 AbstractCegarLoop]: === Iteration 292 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:39,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:39,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1860517572, now seen corresponding path program 244 times [2022-01-19 00:45:39,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:39,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649456117] [2022-01-19 00:45:39,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:39,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:39,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:39,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:39,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649456117] [2022-01-19 00:45:39,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649456117] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:39,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:39,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:39,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377967229] [2022-01-19 00:45:39,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:39,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:39,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:39,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:39,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:39,666 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:39,667 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 706 places, 484 transitions, 6931 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:39,667 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:39,667 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:39,667 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:40,622 INFO L129 PetriNetUnfolder]: 591/2309 cut-off events. [2022-01-19 00:45:40,623 INFO L130 PetriNetUnfolder]: For 23466/23479 co-relation queries the response was YES. [2022-01-19 00:45:40,661 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11371 conditions, 2309 events. 591/2309 cut-off events. For 23466/23479 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 17387 event pairs, 294 based on Foata normal form. 1/2221 useless extension candidates. Maximal degree in co-relation 11134. Up to 801 conditions per place. [2022-01-19 00:45:40,666 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 276 selfloop transitions, 76 changer transitions 62/555 dead transitions. [2022-01-19 00:45:40,667 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 708 places, 555 transitions, 8824 flow [2022-01-19 00:45:40,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:45:40,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:45:40,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4653 transitions. [2022-01-19 00:45:40,669 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7640394088669951 [2022-01-19 00:45:40,669 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4653 transitions. [2022-01-19 00:45:40,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4653 transitions. [2022-01-19 00:45:40,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:40,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4653 transitions. [2022-01-19 00:45:40,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.44827586206895) internal successors, (4653), 29 states have internal predecessors, (4653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:40,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:40,674 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:40,675 INFO L186 Difference]: Start difference. First operand has 706 places, 484 transitions, 6931 flow. Second operand 29 states and 4653 transitions. [2022-01-19 00:45:40,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 708 places, 555 transitions, 8824 flow [2022-01-19 00:45:40,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 680 places, 555 transitions, 8494 flow, removed 20 selfloop flow, removed 28 redundant places. [2022-01-19 00:45:40,857 INFO L242 Difference]: Finished difference. Result has 691 places, 471 transitions, 6599 flow [2022-01-19 00:45:40,857 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6659, PETRI_DIFFERENCE_MINUEND_PLACES=652, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6599, PETRI_PLACES=691, PETRI_TRANSITIONS=471} [2022-01-19 00:45:40,858 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 504 predicate places. [2022-01-19 00:45:40,858 INFO L470 AbstractCegarLoop]: Abstraction has has 691 places, 471 transitions, 6599 flow [2022-01-19 00:45:40,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:40,858 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:40,858 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:40,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable291 [2022-01-19 00:45:40,858 INFO L402 AbstractCegarLoop]: === Iteration 293 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:40,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:40,859 INFO L85 PathProgramCache]: Analyzing trace with hash -242289566, now seen corresponding path program 245 times [2022-01-19 00:45:40,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:40,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47337031] [2022-01-19 00:45:40,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:40,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:40,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:40,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:40,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47337031] [2022-01-19 00:45:40,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47337031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:40,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:40,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:40,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040839716] [2022-01-19 00:45:40,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:40,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:40,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:40,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:40,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:40,960 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:40,960 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 691 places, 471 transitions, 6599 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:40,960 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:40,960 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:40,960 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:41,866 INFO L129 PetriNetUnfolder]: 564/2209 cut-off events. [2022-01-19 00:45:41,867 INFO L130 PetriNetUnfolder]: For 20147/20160 co-relation queries the response was YES. [2022-01-19 00:45:41,902 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10559 conditions, 2209 events. 564/2209 cut-off events. For 20147/20160 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 16312 event pairs, 296 based on Foata normal form. 1/2123 useless extension candidates. Maximal degree in co-relation 10326. Up to 794 conditions per place. [2022-01-19 00:45:41,908 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 257 selfloop transitions, 51 changer transitions 65/514 dead transitions. [2022-01-19 00:45:41,908 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 694 places, 514 transitions, 7739 flow [2022-01-19 00:45:41,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:45:41,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:45:41,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4796 transitions. [2022-01-19 00:45:41,911 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612698412698413 [2022-01-19 00:45:41,911 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4796 transitions. [2022-01-19 00:45:41,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4796 transitions. [2022-01-19 00:45:41,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:41,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4796 transitions. [2022-01-19 00:45:41,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.86666666666667) internal successors, (4796), 30 states have internal predecessors, (4796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:41,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:41,916 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:41,917 INFO L186 Difference]: Start difference. First operand has 691 places, 471 transitions, 6599 flow. Second operand 30 states and 4796 transitions. [2022-01-19 00:45:41,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 694 places, 514 transitions, 7739 flow [2022-01-19 00:45:42,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 514 transitions, 7444 flow, removed 20 selfloop flow, removed 28 redundant places. [2022-01-19 00:45:42,074 INFO L242 Difference]: Finished difference. Result has 673 places, 427 transitions, 5564 flow [2022-01-19 00:45:42,074 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6332, PETRI_DIFFERENCE_MINUEND_PLACES=637, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5564, PETRI_PLACES=673, PETRI_TRANSITIONS=427} [2022-01-19 00:45:42,075 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 486 predicate places. [2022-01-19 00:45:42,075 INFO L470 AbstractCegarLoop]: Abstraction has has 673 places, 427 transitions, 5564 flow [2022-01-19 00:45:42,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:42,075 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:42,075 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:42,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable292 [2022-01-19 00:45:42,075 INFO L402 AbstractCegarLoop]: === Iteration 294 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:42,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:42,076 INFO L85 PathProgramCache]: Analyzing trace with hash -845688752, now seen corresponding path program 246 times [2022-01-19 00:45:42,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:42,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154719037] [2022-01-19 00:45:42,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:42,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:42,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:42,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:42,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154719037] [2022-01-19 00:45:42,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154719037] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:42,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:42,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:42,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407077905] [2022-01-19 00:45:42,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:42,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:42,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:42,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:42,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:42,175 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:42,179 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 673 places, 427 transitions, 5564 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:42,179 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:42,179 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:42,179 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:42,995 INFO L129 PetriNetUnfolder]: 533/2087 cut-off events. [2022-01-19 00:45:42,995 INFO L130 PetriNetUnfolder]: For 16973/16986 co-relation queries the response was YES. [2022-01-19 00:45:43,028 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9613 conditions, 2087 events. 533/2087 cut-off events. For 16973/16986 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 15041 event pairs, 291 based on Foata normal form. 1/2002 useless extension candidates. Maximal degree in co-relation 9388. Up to 785 conditions per place. [2022-01-19 00:45:43,033 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 223 selfloop transitions, 32 changer transitions 66/462 dead transitions. [2022-01-19 00:45:43,033 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 651 places, 462 transitions, 6419 flow [2022-01-19 00:45:43,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:45:43,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:45:43,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4779 transitions. [2022-01-19 00:45:43,036 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7585714285714286 [2022-01-19 00:45:43,036 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4779 transitions. [2022-01-19 00:45:43,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4779 transitions. [2022-01-19 00:45:43,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:43,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4779 transitions. [2022-01-19 00:45:43,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.3) internal successors, (4779), 30 states have internal predecessors, (4779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:43,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:43,042 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:43,042 INFO L186 Difference]: Start difference. First operand has 673 places, 427 transitions, 5564 flow. Second operand 30 states and 4779 transitions. [2022-01-19 00:45:43,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 651 places, 462 transitions, 6419 flow [2022-01-19 00:45:43,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 623 places, 462 transitions, 6077 flow, removed 17 selfloop flow, removed 28 redundant places. [2022-01-19 00:45:43,177 INFO L242 Difference]: Finished difference. Result has 628 places, 374 transitions, 4310 flow [2022-01-19 00:45:43,177 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5235, PETRI_DIFFERENCE_MINUEND_PLACES=594, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4310, PETRI_PLACES=628, PETRI_TRANSITIONS=374} [2022-01-19 00:45:43,177 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 441 predicate places. [2022-01-19 00:45:43,177 INFO L470 AbstractCegarLoop]: Abstraction has has 628 places, 374 transitions, 4310 flow [2022-01-19 00:45:43,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:43,178 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:43,178 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:43,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable293 [2022-01-19 00:45:43,178 INFO L402 AbstractCegarLoop]: === Iteration 295 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:43,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:43,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1565416138, now seen corresponding path program 247 times [2022-01-19 00:45:43,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:43,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463770249] [2022-01-19 00:45:43,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:43,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:43,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:43,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:43,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463770249] [2022-01-19 00:45:43,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463770249] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:43,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:43,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:43,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29205635] [2022-01-19 00:45:43,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:43,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:43,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:43,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:43,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:43,279 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:43,280 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 628 places, 374 transitions, 4310 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:43,280 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:43,280 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:43,280 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:44,159 INFO L129 PetriNetUnfolder]: 532/2109 cut-off events. [2022-01-19 00:45:44,159 INFO L130 PetriNetUnfolder]: For 15026/15039 co-relation queries the response was YES. [2022-01-19 00:45:44,190 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9354 conditions, 2109 events. 532/2109 cut-off events. For 15026/15039 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 15281 event pairs, 281 based on Foata normal form. 1/2027 useless extension candidates. Maximal degree in co-relation 9138. Up to 785 conditions per place. [2022-01-19 00:45:44,195 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 178 selfloop transitions, 66 changer transitions 68/453 dead transitions. [2022-01-19 00:45:44,196 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 453 transitions, 6164 flow [2022-01-19 00:45:44,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 00:45:44,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 00:45:44,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5750 transitions. [2022-01-19 00:45:44,198 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7605820105820106 [2022-01-19 00:45:44,198 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5750 transitions. [2022-01-19 00:45:44,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5750 transitions. [2022-01-19 00:45:44,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:44,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5750 transitions. [2022-01-19 00:45:44,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 159.72222222222223) internal successors, (5750), 36 states have internal predecessors, (5750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:44,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:44,205 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:44,205 INFO L186 Difference]: Start difference. First operand has 628 places, 374 transitions, 4310 flow. Second operand 36 states and 5750 transitions. [2022-01-19 00:45:44,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 453 transitions, 6164 flow [2022-01-19 00:45:44,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 570 places, 453 transitions, 5763 flow, removed 30 selfloop flow, removed 25 redundant places. [2022-01-19 00:45:44,305 INFO L242 Difference]: Finished difference. Result has 587 places, 369 transitions, 4110 flow [2022-01-19 00:45:44,305 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4016, PETRI_DIFFERENCE_MINUEND_PLACES=535, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=308, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=4110, PETRI_PLACES=587, PETRI_TRANSITIONS=369} [2022-01-19 00:45:44,306 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 400 predicate places. [2022-01-19 00:45:44,306 INFO L470 AbstractCegarLoop]: Abstraction has has 587 places, 369 transitions, 4110 flow [2022-01-19 00:45:44,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:44,306 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:44,306 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:44,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable294 [2022-01-19 00:45:44,306 INFO L402 AbstractCegarLoop]: === Iteration 296 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:44,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:44,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1065282028, now seen corresponding path program 248 times [2022-01-19 00:45:44,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:44,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691897048] [2022-01-19 00:45:44,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:44,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:44,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:44,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:44,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:44,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691897048] [2022-01-19 00:45:44,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691897048] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:44,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:44,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:44,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15907117] [2022-01-19 00:45:44,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:44,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:44,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:44,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:44,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:44,409 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:44,410 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 369 transitions, 4110 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:44,410 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:44,410 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:44,410 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:45,217 INFO L129 PetriNetUnfolder]: 519/2060 cut-off events. [2022-01-19 00:45:45,217 INFO L130 PetriNetUnfolder]: For 13174/13187 co-relation queries the response was YES. [2022-01-19 00:45:45,247 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8768 conditions, 2060 events. 519/2060 cut-off events. For 13174/13187 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 14827 event pairs, 294 based on Foata normal form. 1/1975 useless extension candidates. Maximal degree in co-relation 8551. Up to 783 conditions per place. [2022-01-19 00:45:45,252 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 163 selfloop transitions, 63 changer transitions 60/427 dead transitions. [2022-01-19 00:45:45,252 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 427 transitions, 5532 flow [2022-01-19 00:45:45,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:45:45,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:45:45,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4812 transitions. [2022-01-19 00:45:45,254 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7638095238095238 [2022-01-19 00:45:45,254 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4812 transitions. [2022-01-19 00:45:45,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4812 transitions. [2022-01-19 00:45:45,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:45,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4812 transitions. [2022-01-19 00:45:45,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.4) internal successors, (4812), 30 states have internal predecessors, (4812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:45,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:45,260 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:45,260 INFO L186 Difference]: Start difference. First operand has 587 places, 369 transitions, 4110 flow. Second operand 30 states and 4812 transitions. [2022-01-19 00:45:45,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 427 transitions, 5532 flow [2022-01-19 00:45:45,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 559 places, 427 transitions, 5250 flow, removed 34 selfloop flow, removed 35 redundant places. [2022-01-19 00:45:45,350 INFO L242 Difference]: Finished difference. Result has 571 places, 356 transitions, 3788 flow [2022-01-19 00:45:45,350 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3869, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3788, PETRI_PLACES=571, PETRI_TRANSITIONS=356} [2022-01-19 00:45:45,350 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 384 predicate places. [2022-01-19 00:45:45,350 INFO L470 AbstractCegarLoop]: Abstraction has has 571 places, 356 transitions, 3788 flow [2022-01-19 00:45:45,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:45,350 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:45,351 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:45,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable295 [2022-01-19 00:45:45,351 INFO L402 AbstractCegarLoop]: === Iteration 297 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:45,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:45,351 INFO L85 PathProgramCache]: Analyzing trace with hash 198379456, now seen corresponding path program 249 times [2022-01-19 00:45:45,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:45,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849772135] [2022-01-19 00:45:45,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:45,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:45,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:45,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:45,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849772135] [2022-01-19 00:45:45,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849772135] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:45,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:45,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:45,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056449639] [2022-01-19 00:45:45,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:45,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:45,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:45,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:45,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:45,457 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:45,457 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 356 transitions, 3788 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:45,457 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:45,457 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:45,457 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:46,220 INFO L129 PetriNetUnfolder]: 514/2038 cut-off events. [2022-01-19 00:45:46,220 INFO L130 PetriNetUnfolder]: For 13056/13069 co-relation queries the response was YES. [2022-01-19 00:45:46,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8489 conditions, 2038 events. 514/2038 cut-off events. For 13056/13069 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14637 event pairs, 285 based on Foata normal form. 1/1955 useless extension candidates. Maximal degree in co-relation 8283. Up to 781 conditions per place. [2022-01-19 00:45:46,258 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 159 selfloop transitions, 54 changer transitions 60/414 dead transitions. [2022-01-19 00:45:46,258 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 414 transitions, 5170 flow [2022-01-19 00:45:46,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:45:46,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:45:46,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4805 transitions. [2022-01-19 00:45:46,261 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7626984126984127 [2022-01-19 00:45:46,261 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4805 transitions. [2022-01-19 00:45:46,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4805 transitions. [2022-01-19 00:45:46,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:46,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4805 transitions. [2022-01-19 00:45:46,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.16666666666666) internal successors, (4805), 30 states have internal predecessors, (4805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:46,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:46,267 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:46,267 INFO L186 Difference]: Start difference. First operand has 571 places, 356 transitions, 3788 flow. Second operand 30 states and 4805 transitions. [2022-01-19 00:45:46,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 414 transitions, 5170 flow [2022-01-19 00:45:46,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 414 transitions, 4903 flow, removed 23 selfloop flow, removed 29 redundant places. [2022-01-19 00:45:46,349 INFO L242 Difference]: Finished difference. Result has 556 places, 343 transitions, 3486 flow [2022-01-19 00:45:46,349 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3568, PETRI_DIFFERENCE_MINUEND_PLACES=515, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=356, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3486, PETRI_PLACES=556, PETRI_TRANSITIONS=343} [2022-01-19 00:45:46,349 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 369 predicate places. [2022-01-19 00:45:46,349 INFO L470 AbstractCegarLoop]: Abstraction has has 556 places, 343 transitions, 3486 flow [2022-01-19 00:45:46,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:46,350 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:46,350 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:46,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable296 [2022-01-19 00:45:46,350 INFO L402 AbstractCegarLoop]: === Iteration 298 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:46,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:46,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1992795230, now seen corresponding path program 250 times [2022-01-19 00:45:46,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:46,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616500907] [2022-01-19 00:45:46,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:46,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:46,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:46,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:46,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:46,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616500907] [2022-01-19 00:45:46,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616500907] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:46,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:46,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:46,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448733319] [2022-01-19 00:45:46,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:46,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:46,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:46,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:46,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:46,454 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:46,455 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 556 places, 343 transitions, 3486 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:46,455 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:46,455 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:46,455 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:47,166 INFO L129 PetriNetUnfolder]: 483/1937 cut-off events. [2022-01-19 00:45:47,166 INFO L130 PetriNetUnfolder]: For 10762/10775 co-relation queries the response was YES. [2022-01-19 00:45:47,190 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7726 conditions, 1937 events. 483/1937 cut-off events. For 10762/10775 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 13610 event pairs, 289 based on Foata normal form. 1/1854 useless extension candidates. Maximal degree in co-relation 7526. Up to 774 conditions per place. [2022-01-19 00:45:47,194 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 140 selfloop transitions, 25 changer transitions 64/370 dead transitions. [2022-01-19 00:45:47,194 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 370 transitions, 4157 flow [2022-01-19 00:45:47,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:45:47,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:45:47,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4631 transitions. [2022-01-19 00:45:47,196 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7604269293924466 [2022-01-19 00:45:47,196 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4631 transitions. [2022-01-19 00:45:47,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4631 transitions. [2022-01-19 00:45:47,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:47,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4631 transitions. [2022-01-19 00:45:47,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 159.68965517241378) internal successors, (4631), 29 states have internal predecessors, (4631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:47,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:47,201 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:47,201 INFO L186 Difference]: Start difference. First operand has 556 places, 343 transitions, 3486 flow. Second operand 29 states and 4631 transitions. [2022-01-19 00:45:47,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 370 transitions, 4157 flow [2022-01-19 00:45:47,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 370 transitions, 3943 flow, removed 22 selfloop flow, removed 29 redundant places. [2022-01-19 00:45:47,265 INFO L242 Difference]: Finished difference. Result has 535 places, 295 transitions, 2515 flow [2022-01-19 00:45:47,265 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3292, PETRI_DIFFERENCE_MINUEND_PLACES=500, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2515, PETRI_PLACES=535, PETRI_TRANSITIONS=295} [2022-01-19 00:45:47,266 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 348 predicate places. [2022-01-19 00:45:47,266 INFO L470 AbstractCegarLoop]: Abstraction has has 535 places, 295 transitions, 2515 flow [2022-01-19 00:45:47,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:47,266 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:47,266 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:47,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable297 [2022-01-19 00:45:47,266 INFO L402 AbstractCegarLoop]: === Iteration 299 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:47,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:47,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1665717460, now seen corresponding path program 251 times [2022-01-19 00:45:47,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:47,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445907916] [2022-01-19 00:45:47,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:47,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:47,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:47,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:47,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:47,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445907916] [2022-01-19 00:45:47,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445907916] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:47,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:47,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:47,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795396441] [2022-01-19 00:45:47,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:47,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:47,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:47,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:47,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:47,364 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:47,365 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 535 places, 295 transitions, 2515 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:47,365 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:47,365 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:47,365 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:48,029 INFO L129 PetriNetUnfolder]: 458/1847 cut-off events. [2022-01-19 00:45:48,030 INFO L130 PetriNetUnfolder]: For 8843/8856 co-relation queries the response was YES. [2022-01-19 00:45:48,054 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7040 conditions, 1847 events. 458/1847 cut-off events. For 8843/8856 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 12819 event pairs, 272 based on Foata normal form. 1/1767 useless extension candidates. Maximal degree in co-relation 6851. Up to 769 conditions per place. [2022-01-19 00:45:48,057 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 102 selfloop transitions, 27 changer transitions 62/332 dead transitions. [2022-01-19 00:45:48,058 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 332 transitions, 3298 flow [2022-01-19 00:45:48,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:45:48,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:45:48,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4636 transitions. [2022-01-19 00:45:48,060 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.761247947454844 [2022-01-19 00:45:48,060 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4636 transitions. [2022-01-19 00:45:48,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4636 transitions. [2022-01-19 00:45:48,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:48,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4636 transitions. [2022-01-19 00:45:48,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 159.86206896551724) internal successors, (4636), 29 states have internal predecessors, (4636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:48,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:48,065 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:48,065 INFO L186 Difference]: Start difference. First operand has 535 places, 295 transitions, 2515 flow. Second operand 29 states and 4636 transitions. [2022-01-19 00:45:48,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 332 transitions, 3298 flow [2022-01-19 00:45:48,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 332 transitions, 3062 flow, removed 21 selfloop flow, removed 26 redundant places. [2022-01-19 00:45:48,110 INFO L242 Difference]: Finished difference. Result has 486 places, 259 transitions, 1781 flow [2022-01-19 00:45:48,110 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2334, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1781, PETRI_PLACES=486, PETRI_TRANSITIONS=259} [2022-01-19 00:45:48,110 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 299 predicate places. [2022-01-19 00:45:48,110 INFO L470 AbstractCegarLoop]: Abstraction has has 486 places, 259 transitions, 1781 flow [2022-01-19 00:45:48,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:48,111 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:48,111 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:48,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable298 [2022-01-19 00:45:48,111 INFO L402 AbstractCegarLoop]: === Iteration 300 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:48,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:48,111 INFO L85 PathProgramCache]: Analyzing trace with hash -946555676, now seen corresponding path program 252 times [2022-01-19 00:45:48,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:48,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347440233] [2022-01-19 00:45:48,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:48,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:48,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:48,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:48,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347440233] [2022-01-19 00:45:48,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347440233] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:48,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:48,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:48,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889826845] [2022-01-19 00:45:48,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:48,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:48,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:48,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:48,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:48,210 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:48,210 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 259 transitions, 1781 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:48,210 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:48,210 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:48,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:48,814 INFO L129 PetriNetUnfolder]: 427/1701 cut-off events. [2022-01-19 00:45:48,814 INFO L130 PetriNetUnfolder]: For 6641/6654 co-relation queries the response was YES. [2022-01-19 00:45:48,835 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6149 conditions, 1701 events. 427/1701 cut-off events. For 6641/6654 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 11493 event pairs, 278 based on Foata normal form. 1/1621 useless extension candidates. Maximal degree in co-relation 5966. Up to 744 conditions per place. [2022-01-19 00:45:48,838 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 72 selfloop transitions, 2 changer transitions 66/281 dead transitions. [2022-01-19 00:45:48,838 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 281 transitions, 2189 flow [2022-01-19 00:45:48,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:45:48,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:45:48,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4769 transitions. [2022-01-19 00:45:48,841 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.756984126984127 [2022-01-19 00:45:48,841 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4769 transitions. [2022-01-19 00:45:48,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4769 transitions. [2022-01-19 00:45:48,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:48,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4769 transitions. [2022-01-19 00:45:48,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 158.96666666666667) internal successors, (4769), 30 states have internal predecessors, (4769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:48,846 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:48,847 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:48,847 INFO L186 Difference]: Start difference. First operand has 486 places, 259 transitions, 1781 flow. Second operand 30 states and 4769 transitions. [2022-01-19 00:45:48,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 281 transitions, 2189 flow [2022-01-19 00:45:48,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 281 transitions, 2032 flow, removed 18 selfloop flow, removed 28 redundant places. [2022-01-19 00:45:48,879 INFO L242 Difference]: Finished difference. Result has 448 places, 204 transitions, 806 flow [2022-01-19 00:45:48,880 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1632, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=806, PETRI_PLACES=448, PETRI_TRANSITIONS=204} [2022-01-19 00:45:48,880 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 261 predicate places. [2022-01-19 00:45:48,880 INFO L470 AbstractCegarLoop]: Abstraction has has 448 places, 204 transitions, 806 flow [2022-01-19 00:45:48,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:48,880 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:48,880 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:48,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable299 [2022-01-19 00:45:48,880 INFO L402 AbstractCegarLoop]: === Iteration 301 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:48,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:48,881 INFO L85 PathProgramCache]: Analyzing trace with hash -673647796, now seen corresponding path program 1 times [2022-01-19 00:45:48,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:48,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119072300] [2022-01-19 00:45:48,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:48,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:48,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:48,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:48,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119072300] [2022-01-19 00:45:48,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119072300] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:48,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:48,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:48,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590250601] [2022-01-19 00:45:48,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:48,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:48,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:48,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:48,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:48,966 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:48,966 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 204 transitions, 806 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:48,966 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:48,967 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:48,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:49,908 INFO L129 PetriNetUnfolder]: 646/2345 cut-off events. [2022-01-19 00:45:49,909 INFO L130 PetriNetUnfolder]: For 6778/6801 co-relation queries the response was YES. [2022-01-19 00:45:49,937 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7683 conditions, 2345 events. 646/2345 cut-off events. For 6778/6801 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 16870 event pairs, 351 based on Foata normal form. 2/2252 useless extension candidates. Maximal degree in co-relation 7510. Up to 929 conditions per place. [2022-01-19 00:45:49,943 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 148 selfloop transitions, 22 changer transitions 92/404 dead transitions. [2022-01-19 00:45:49,943 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 404 transitions, 2580 flow [2022-01-19 00:45:49,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-19 00:45:49,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-01-19 00:45:49,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 8295 transitions. [2022-01-19 00:45:49,946 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7596153846153846 [2022-01-19 00:45:49,946 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 8295 transitions. [2022-01-19 00:45:49,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 8295 transitions. [2022-01-19 00:45:49,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:49,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 8295 transitions. [2022-01-19 00:45:49,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 159.51923076923077) internal successors, (8295), 52 states have internal predecessors, (8295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:49,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:49,956 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:49,956 INFO L186 Difference]: Start difference. First operand has 448 places, 204 transitions, 806 flow. Second operand 52 states and 8295 transitions. [2022-01-19 00:45:49,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 404 transitions, 2580 flow [2022-01-19 00:45:49,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 404 transitions, 2500 flow, removed 33 selfloop flow, removed 32 redundant places. [2022-01-19 00:45:49,981 INFO L242 Difference]: Finished difference. Result has 434 places, 227 transitions, 1050 flow [2022-01-19 00:45:49,981 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=1050, PETRI_PLACES=434, PETRI_TRANSITIONS=227} [2022-01-19 00:45:49,981 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 247 predicate places. [2022-01-19 00:45:49,981 INFO L470 AbstractCegarLoop]: Abstraction has has 434 places, 227 transitions, 1050 flow [2022-01-19 00:45:49,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:49,981 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:49,981 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:49,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable300 [2022-01-19 00:45:49,981 INFO L402 AbstractCegarLoop]: === Iteration 302 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:49,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:49,982 INFO L85 PathProgramCache]: Analyzing trace with hash -289802090, now seen corresponding path program 2 times [2022-01-19 00:45:49,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:49,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125378088] [2022-01-19 00:45:49,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:49,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:49,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:50,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:50,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:50,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125378088] [2022-01-19 00:45:50,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125378088] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:50,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:50,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:50,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655976367] [2022-01-19 00:45:50,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:50,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:50,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:50,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:50,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:50,060 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:50,061 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 227 transitions, 1050 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:50,061 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:50,061 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:50,061 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:50,937 INFO L129 PetriNetUnfolder]: 719/2582 cut-off events. [2022-01-19 00:45:50,937 INFO L130 PetriNetUnfolder]: For 26477/26508 co-relation queries the response was YES. [2022-01-19 00:45:50,971 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12263 conditions, 2582 events. 719/2582 cut-off events. For 26477/26508 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 19273 event pairs, 219 based on Foata normal form. 6/2494 useless extension candidates. Maximal degree in co-relation 12073. Up to 555 conditions per place. [2022-01-19 00:45:50,976 INFO L132 encePairwiseOnDemand]: 187/210 looper letters, 146 selfloop transitions, 50 changer transitions 144/482 dead transitions. [2022-01-19 00:45:50,976 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 482 transitions, 4297 flow [2022-01-19 00:45:50,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-19 00:45:50,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-01-19 00:45:50,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5513 transitions. [2022-01-19 00:45:50,979 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7721288515406163 [2022-01-19 00:45:50,979 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5513 transitions. [2022-01-19 00:45:50,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5513 transitions. [2022-01-19 00:45:50,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:50,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5513 transitions. [2022-01-19 00:45:50,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 162.14705882352942) internal successors, (5513), 34 states have internal predecessors, (5513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:50,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:50,986 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:50,986 INFO L186 Difference]: Start difference. First operand has 434 places, 227 transitions, 1050 flow. Second operand 34 states and 5513 transitions. [2022-01-19 00:45:50,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 482 transitions, 4297 flow [2022-01-19 00:45:51,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 482 transitions, 3627 flow, removed 335 selfloop flow, removed 28 redundant places. [2022-01-19 00:45:51,050 INFO L242 Difference]: Finished difference. Result has 427 places, 250 transitions, 1512 flow [2022-01-19 00:45:51,050 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1512, PETRI_PLACES=427, PETRI_TRANSITIONS=250} [2022-01-19 00:45:51,050 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 240 predicate places. [2022-01-19 00:45:51,050 INFO L470 AbstractCegarLoop]: Abstraction has has 427 places, 250 transitions, 1512 flow [2022-01-19 00:45:51,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:51,051 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:51,051 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:51,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable301 [2022-01-19 00:45:51,051 INFO L402 AbstractCegarLoop]: === Iteration 303 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:51,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:51,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1630149412, now seen corresponding path program 1 times [2022-01-19 00:45:51,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:51,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459756340] [2022-01-19 00:45:51,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:51,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:51,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:51,064 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:51,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459756340] [2022-01-19 00:45:51,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459756340] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:51,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:51,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 00:45:51,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228166582] [2022-01-19 00:45:51,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:51,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 00:45:51,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:51,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 00:45:51,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 00:45:51,065 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-01-19 00:45:51,065 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 250 transitions, 1512 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:51,065 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:51,065 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-01-19 00:45:51,066 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:51,297 INFO L129 PetriNetUnfolder]: 189/1523 cut-off events. [2022-01-19 00:45:51,298 INFO L130 PetriNetUnfolder]: For 13383/13538 co-relation queries the response was YES. [2022-01-19 00:45:51,316 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6133 conditions, 1523 events. 189/1523 cut-off events. For 13383/13538 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 11331 event pairs, 125 based on Foata normal form. 35/1491 useless extension candidates. Maximal degree in co-relation 5942. Up to 142 conditions per place. [2022-01-19 00:45:51,319 INFO L132 encePairwiseOnDemand]: 204/210 looper letters, 11 selfloop transitions, 3 changer transitions 4/256 dead transitions. [2022-01-19 00:45:51,319 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 256 transitions, 1563 flow [2022-01-19 00:45:51,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 00:45:51,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 00:45:51,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2022-01-19 00:45:51,320 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2022-01-19 00:45:51,320 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2022-01-19 00:45:51,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2022-01-19 00:45:51,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:51,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2022-01-19 00:45:51,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:51,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:51,321 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:51,321 INFO L186 Difference]: Start difference. First operand has 427 places, 250 transitions, 1512 flow. Second operand 3 states and 591 transitions. [2022-01-19 00:45:51,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 256 transitions, 1563 flow [2022-01-19 00:45:51,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 256 transitions, 1271 flow, removed 146 selfloop flow, removed 16 redundant places. [2022-01-19 00:45:51,364 INFO L242 Difference]: Finished difference. Result has 388 places, 250 transitions, 1235 flow [2022-01-19 00:45:51,364 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1220, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1235, PETRI_PLACES=388, PETRI_TRANSITIONS=250} [2022-01-19 00:45:51,364 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 201 predicate places. [2022-01-19 00:45:51,364 INFO L470 AbstractCegarLoop]: Abstraction has has 388 places, 250 transitions, 1235 flow [2022-01-19 00:45:51,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:51,364 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:51,365 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:51,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable302 [2022-01-19 00:45:51,365 INFO L402 AbstractCegarLoop]: === Iteration 304 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:51,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:51,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1287662250, now seen corresponding path program 2 times [2022-01-19 00:45:51,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:51,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109422906] [2022-01-19 00:45:51,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:51,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:51,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:51,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:51,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:51,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109422906] [2022-01-19 00:45:51,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109422906] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:51,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:51,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 00:45:51,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875532524] [2022-01-19 00:45:51,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:51,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 00:45:51,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:51,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 00:45:51,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 00:45:51,388 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2022-01-19 00:45:51,388 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 250 transitions, 1235 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:51,388 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:51,388 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2022-01-19 00:45:51,388 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:51,554 INFO L129 PetriNetUnfolder]: 86/947 cut-off events. [2022-01-19 00:45:51,554 INFO L130 PetriNetUnfolder]: For 4769/4795 co-relation queries the response was YES. [2022-01-19 00:45:51,565 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3251 conditions, 947 events. 86/947 cut-off events. For 4769/4795 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 6012 event pairs, 70 based on Foata normal form. 8/915 useless extension candidates. Maximal degree in co-relation 3074. Up to 72 conditions per place. [2022-01-19 00:45:51,567 INFO L132 encePairwiseOnDemand]: 202/210 looper letters, 9 selfloop transitions, 5 changer transitions 23/219 dead transitions. [2022-01-19 00:45:51,567 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 219 transitions, 1003 flow [2022-01-19 00:45:51,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 00:45:51,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 00:45:51,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 590 transitions. [2022-01-19 00:45:51,568 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9365079365079365 [2022-01-19 00:45:51,568 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 590 transitions. [2022-01-19 00:45:51,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 590 transitions. [2022-01-19 00:45:51,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:51,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 590 transitions. [2022-01-19 00:45:51,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:51,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:51,569 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:51,569 INFO L186 Difference]: Start difference. First operand has 388 places, 250 transitions, 1235 flow. Second operand 3 states and 590 transitions. [2022-01-19 00:45:51,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 219 transitions, 1003 flow [2022-01-19 00:45:51,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 219 transitions, 880 flow, removed 35 selfloop flow, removed 23 redundant places. [2022-01-19 00:45:51,591 INFO L242 Difference]: Finished difference. Result has 365 places, 195 transitions, 747 flow [2022-01-19 00:45:51,591 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=828, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=747, PETRI_PLACES=365, PETRI_TRANSITIONS=195} [2022-01-19 00:45:51,592 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 178 predicate places. [2022-01-19 00:45:51,592 INFO L470 AbstractCegarLoop]: Abstraction has has 365 places, 195 transitions, 747 flow [2022-01-19 00:45:51,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:51,592 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:51,592 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:51,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable303 [2022-01-19 00:45:51,592 INFO L402 AbstractCegarLoop]: === Iteration 305 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:51,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:51,592 INFO L85 PathProgramCache]: Analyzing trace with hash 11624958, now seen corresponding path program 1 times [2022-01-19 00:45:51,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:51,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869128540] [2022-01-19 00:45:51,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:51,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:51,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:51,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:51,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869128540] [2022-01-19 00:45:51,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869128540] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:51,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:51,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:51,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405400116] [2022-01-19 00:45:51,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:51,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:51,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:51,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:51,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:51,691 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:51,692 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 195 transitions, 747 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:51,692 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:51,692 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:51,692 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:52,387 INFO L129 PetriNetUnfolder]: 284/1339 cut-off events. [2022-01-19 00:45:52,387 INFO L130 PetriNetUnfolder]: For 8667/8681 co-relation queries the response was YES. [2022-01-19 00:45:52,402 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5421 conditions, 1339 events. 284/1339 cut-off events. For 8667/8681 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 8605 event pairs, 120 based on Foata normal form. 1/1295 useless extension candidates. Maximal degree in co-relation 5259. Up to 374 conditions per place. [2022-01-19 00:45:52,405 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 112 selfloop transitions, 25 changer transitions 60/338 dead transitions. [2022-01-19 00:45:52,406 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 338 transitions, 2697 flow [2022-01-19 00:45:52,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-19 00:45:52,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-01-19 00:45:52,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5448 transitions. [2022-01-19 00:45:52,408 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7630252100840336 [2022-01-19 00:45:52,408 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5448 transitions. [2022-01-19 00:45:52,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5448 transitions. [2022-01-19 00:45:52,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:52,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5448 transitions. [2022-01-19 00:45:52,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 160.23529411764707) internal successors, (5448), 34 states have internal predecessors, (5448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:52,415 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:52,415 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:52,415 INFO L186 Difference]: Start difference. First operand has 365 places, 195 transitions, 747 flow. Second operand 34 states and 5448 transitions. [2022-01-19 00:45:52,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 338 transitions, 2697 flow [2022-01-19 00:45:52,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 338 transitions, 2505 flow, removed 91 selfloop flow, removed 12 redundant places. [2022-01-19 00:45:52,436 INFO L242 Difference]: Finished difference. Result has 402 places, 219 transitions, 1186 flow [2022-01-19 00:45:52,436 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=1186, PETRI_PLACES=402, PETRI_TRANSITIONS=219} [2022-01-19 00:45:52,436 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 215 predicate places. [2022-01-19 00:45:52,436 INFO L470 AbstractCegarLoop]: Abstraction has has 402 places, 219 transitions, 1186 flow [2022-01-19 00:45:52,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:52,437 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:52,437 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:52,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable304 [2022-01-19 00:45:52,437 INFO L402 AbstractCegarLoop]: === Iteration 306 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:52,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:52,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1065449616, now seen corresponding path program 2 times [2022-01-19 00:45:52,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:52,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048463075] [2022-01-19 00:45:52,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:52,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:52,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:52,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:52,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:52,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048463075] [2022-01-19 00:45:52,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048463075] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:52,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:52,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:52,532 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210635819] [2022-01-19 00:45:52,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:52,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:52,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:52,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:52,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:52,533 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:52,534 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 219 transitions, 1186 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:52,534 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:52,534 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:52,534 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:53,564 INFO L129 PetriNetUnfolder]: 293/1409 cut-off events. [2022-01-19 00:45:53,564 INFO L130 PetriNetUnfolder]: For 17088/17096 co-relation queries the response was YES. [2022-01-19 00:45:53,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6956 conditions, 1409 events. 293/1409 cut-off events. For 17088/17096 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 9356 event pairs, 103 based on Foata normal form. 1/1372 useless extension candidates. Maximal degree in co-relation 6773. Up to 354 conditions per place. [2022-01-19 00:45:53,584 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 160 selfloop transitions, 20 changer transitions 103/424 dead transitions. [2022-01-19 00:45:53,584 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 424 transitions, 4547 flow [2022-01-19 00:45:53,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-19 00:45:53,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-01-19 00:45:53,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 9234 transitions. [2022-01-19 00:45:53,588 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.758128078817734 [2022-01-19 00:45:53,588 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 9234 transitions. [2022-01-19 00:45:53,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 9234 transitions. [2022-01-19 00:45:53,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:53,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 9234 transitions. [2022-01-19 00:45:53,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 159.20689655172413) internal successors, (9234), 58 states have internal predecessors, (9234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:53,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:53,599 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:53,599 INFO L186 Difference]: Start difference. First operand has 402 places, 219 transitions, 1186 flow. Second operand 58 states and 9234 transitions. [2022-01-19 00:45:53,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 424 transitions, 4547 flow [2022-01-19 00:45:53,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 424 transitions, 3783 flow, removed 382 selfloop flow, removed 18 redundant places. [2022-01-19 00:45:53,639 INFO L242 Difference]: Finished difference. Result has 476 places, 227 transitions, 1339 flow [2022-01-19 00:45:53,640 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=992, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=1339, PETRI_PLACES=476, PETRI_TRANSITIONS=227} [2022-01-19 00:45:53,640 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 289 predicate places. [2022-01-19 00:45:53,640 INFO L470 AbstractCegarLoop]: Abstraction has has 476 places, 227 transitions, 1339 flow [2022-01-19 00:45:53,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:53,640 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:53,640 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:53,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable305 [2022-01-19 00:45:53,640 INFO L402 AbstractCegarLoop]: === Iteration 307 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:53,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:53,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1337927380, now seen corresponding path program 3 times [2022-01-19 00:45:53,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:53,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632860515] [2022-01-19 00:45:53,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:53,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:53,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:53,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:53,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632860515] [2022-01-19 00:45:53,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632860515] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:53,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:53,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:53,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624293824] [2022-01-19 00:45:53,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:53,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:53,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:53,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:53,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:53,739 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:53,740 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 476 places, 227 transitions, 1339 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:53,740 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:53,740 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:53,740 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:54,494 INFO L129 PetriNetUnfolder]: 339/1539 cut-off events. [2022-01-19 00:45:54,494 INFO L130 PetriNetUnfolder]: For 30491/30499 co-relation queries the response was YES. [2022-01-19 00:45:54,515 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9179 conditions, 1539 events. 339/1539 cut-off events. For 30491/30499 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 10268 event pairs, 139 based on Foata normal form. 1/1492 useless extension candidates. Maximal degree in co-relation 8958. Up to 373 conditions per place. [2022-01-19 00:45:54,520 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 137 selfloop transitions, 31 changer transitions 49/358 dead transitions. [2022-01-19 00:45:54,520 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 358 transitions, 3891 flow [2022-01-19 00:45:54,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 00:45:54,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 00:45:54,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4353 transitions. [2022-01-19 00:45:54,524 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7677248677248677 [2022-01-19 00:45:54,524 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4353 transitions. [2022-01-19 00:45:54,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4353 transitions. [2022-01-19 00:45:54,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:54,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4353 transitions. [2022-01-19 00:45:54,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 161.22222222222223) internal successors, (4353), 27 states have internal predecessors, (4353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:54,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:54,529 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:54,529 INFO L186 Difference]: Start difference. First operand has 476 places, 227 transitions, 1339 flow. Second operand 27 states and 4353 transitions. [2022-01-19 00:45:54,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 358 transitions, 3891 flow [2022-01-19 00:45:54,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 358 transitions, 3384 flow, removed 246 selfloop flow, removed 35 redundant places. [2022-01-19 00:45:54,613 INFO L242 Difference]: Finished difference. Result has 439 places, 256 transitions, 1852 flow [2022-01-19 00:45:54,613 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1195, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1852, PETRI_PLACES=439, PETRI_TRANSITIONS=256} [2022-01-19 00:45:54,613 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 252 predicate places. [2022-01-19 00:45:54,613 INFO L470 AbstractCegarLoop]: Abstraction has has 439 places, 256 transitions, 1852 flow [2022-01-19 00:45:54,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:54,614 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:54,614 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:54,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable306 [2022-01-19 00:45:54,614 INFO L402 AbstractCegarLoop]: === Iteration 308 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:54,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:54,614 INFO L85 PathProgramCache]: Analyzing trace with hash -375527788, now seen corresponding path program 4 times [2022-01-19 00:45:54,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:54,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936003364] [2022-01-19 00:45:54,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:54,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:54,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:54,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:54,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936003364] [2022-01-19 00:45:54,711 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936003364] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:54,711 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:54,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:54,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441248079] [2022-01-19 00:45:54,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:54,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:54,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:54,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:54,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:54,713 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:54,713 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 256 transitions, 1852 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:54,713 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:54,713 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:54,713 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:55,319 INFO L129 PetriNetUnfolder]: 350/1567 cut-off events. [2022-01-19 00:45:55,319 INFO L130 PetriNetUnfolder]: For 20771/20786 co-relation queries the response was YES. [2022-01-19 00:45:55,340 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8577 conditions, 1567 events. 350/1567 cut-off events. For 20771/20786 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 10472 event pairs, 125 based on Foata normal form. 3/1524 useless extension candidates. Maximal degree in co-relation 8370. Up to 435 conditions per place. [2022-01-19 00:45:55,344 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 151 selfloop transitions, 47 changer transitions 45/384 dead transitions. [2022-01-19 00:45:55,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 384 transitions, 4473 flow [2022-01-19 00:45:55,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-19 00:45:55,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-01-19 00:45:55,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4180 transitions. [2022-01-19 00:45:55,346 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655677655677655 [2022-01-19 00:45:55,346 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4180 transitions. [2022-01-19 00:45:55,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4180 transitions. [2022-01-19 00:45:55,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:55,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4180 transitions. [2022-01-19 00:45:55,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 160.76923076923077) internal successors, (4180), 26 states have internal predecessors, (4180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:55,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:55,351 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:55,352 INFO L186 Difference]: Start difference. First operand has 439 places, 256 transitions, 1852 flow. Second operand 26 states and 4180 transitions. [2022-01-19 00:45:55,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 384 transitions, 4473 flow [2022-01-19 00:45:55,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 384 transitions, 3911 flow, removed 260 selfloop flow, removed 24 redundant places. [2022-01-19 00:45:55,420 INFO L242 Difference]: Finished difference. Result has 445 places, 274 transitions, 2045 flow [2022-01-19 00:45:55,420 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2045, PETRI_PLACES=445, PETRI_TRANSITIONS=274} [2022-01-19 00:45:55,421 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 258 predicate places. [2022-01-19 00:45:55,421 INFO L470 AbstractCegarLoop]: Abstraction has has 445 places, 274 transitions, 2045 flow [2022-01-19 00:45:55,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:55,421 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:55,421 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:55,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable307 [2022-01-19 00:45:55,421 INFO L402 AbstractCegarLoop]: === Iteration 309 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:55,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:55,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1356977192, now seen corresponding path program 5 times [2022-01-19 00:45:55,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:55,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869615171] [2022-01-19 00:45:55,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:55,422 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:55,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:55,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:55,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869615171] [2022-01-19 00:45:55,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869615171] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:55,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:55,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:55,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13028280] [2022-01-19 00:45:55,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:55,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:55,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:55,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:55,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:55,525 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:55,526 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 274 transitions, 2045 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:55,526 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:55,526 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:55,526 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:56,727 INFO L129 PetriNetUnfolder]: 479/1886 cut-off events. [2022-01-19 00:45:56,727 INFO L130 PetriNetUnfolder]: For 28147/28160 co-relation queries the response was YES. [2022-01-19 00:45:56,758 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11237 conditions, 1886 events. 479/1886 cut-off events. For 28147/28160 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 13247 event pairs, 177 based on Foata normal form. 3/1840 useless extension candidates. Maximal degree in co-relation 11035. Up to 437 conditions per place. [2022-01-19 00:45:56,764 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 199 selfloop transitions, 38 changer transitions 88/466 dead transitions. [2022-01-19 00:45:56,764 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 466 transitions, 6002 flow [2022-01-19 00:45:56,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-01-19 00:45:56,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-01-19 00:45:56,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 8287 transitions. [2022-01-19 00:45:56,769 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7588827838827839 [2022-01-19 00:45:56,769 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 8287 transitions. [2022-01-19 00:45:56,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 8287 transitions. [2022-01-19 00:45:56,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:56,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 8287 transitions. [2022-01-19 00:45:56,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 159.3653846153846) internal successors, (8287), 52 states have internal predecessors, (8287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:56,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:56,780 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:56,780 INFO L186 Difference]: Start difference. First operand has 445 places, 274 transitions, 2045 flow. Second operand 52 states and 8287 transitions. [2022-01-19 00:45:56,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 466 transitions, 6002 flow [2022-01-19 00:45:56,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 466 transitions, 5495 flow, removed 185 selfloop flow, removed 12 redundant places. [2022-01-19 00:45:56,870 INFO L242 Difference]: Finished difference. Result has 517 places, 295 transitions, 2258 flow [2022-01-19 00:45:56,870 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1742, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=2258, PETRI_PLACES=517, PETRI_TRANSITIONS=295} [2022-01-19 00:45:56,870 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 330 predicate places. [2022-01-19 00:45:56,871 INFO L470 AbstractCegarLoop]: Abstraction has has 517 places, 295 transitions, 2258 flow [2022-01-19 00:45:56,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:56,871 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:56,871 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:56,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable308 [2022-01-19 00:45:56,871 INFO L402 AbstractCegarLoop]: === Iteration 310 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:56,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:56,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1219439260, now seen corresponding path program 6 times [2022-01-19 00:45:56,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:56,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546331869] [2022-01-19 00:45:56,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:56,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:56,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:56,972 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:56,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546331869] [2022-01-19 00:45:56,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546331869] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:56,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:56,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:56,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179420358] [2022-01-19 00:45:56,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:56,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:56,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:56,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:56,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:56,974 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:56,975 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 295 transitions, 2258 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:56,975 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:56,975 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:56,975 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:58,229 INFO L129 PetriNetUnfolder]: 555/2112 cut-off events. [2022-01-19 00:45:58,230 INFO L130 PetriNetUnfolder]: For 57614/57640 co-relation queries the response was YES. [2022-01-19 00:45:58,271 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15197 conditions, 2112 events. 555/2112 cut-off events. For 57614/57640 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 15241 event pairs, 254 based on Foata normal form. 3/2056 useless extension candidates. Maximal degree in co-relation 14959. Up to 432 conditions per place. [2022-01-19 00:45:58,279 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 229 selfloop transitions, 57 changer transitions 89/516 dead transitions. [2022-01-19 00:45:58,279 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 516 transitions, 7952 flow [2022-01-19 00:45:58,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-19 00:45:58,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-01-19 00:45:58,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7972 transitions. [2022-01-19 00:45:58,283 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7592380952380953 [2022-01-19 00:45:58,283 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7972 transitions. [2022-01-19 00:45:58,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7972 transitions. [2022-01-19 00:45:58,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:58,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7972 transitions. [2022-01-19 00:45:58,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 159.44) internal successors, (7972), 50 states have internal predecessors, (7972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:58,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:58,294 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:58,294 INFO L186 Difference]: Start difference. First operand has 517 places, 295 transitions, 2258 flow. Second operand 50 states and 7972 transitions. [2022-01-19 00:45:58,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 516 transitions, 7952 flow [2022-01-19 00:45:58,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 516 transitions, 6704 flow, removed 624 selfloop flow, removed 35 redundant places. [2022-01-19 00:45:58,437 INFO L242 Difference]: Finished difference. Result has 538 places, 315 transitions, 2761 flow [2022-01-19 00:45:58,437 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2124, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=2761, PETRI_PLACES=538, PETRI_TRANSITIONS=315} [2022-01-19 00:45:58,438 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 351 predicate places. [2022-01-19 00:45:58,438 INFO L470 AbstractCegarLoop]: Abstraction has has 538 places, 315 transitions, 2761 flow [2022-01-19 00:45:58,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:58,438 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:58,438 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:58,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable309 [2022-01-19 00:45:58,438 INFO L402 AbstractCegarLoop]: === Iteration 311 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:58,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:58,438 INFO L85 PathProgramCache]: Analyzing trace with hash 580278906, now seen corresponding path program 7 times [2022-01-19 00:45:58,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:58,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127458392] [2022-01-19 00:45:58,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:58,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:58,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:58,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:58,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127458392] [2022-01-19 00:45:58,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127458392] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:58,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:58,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:45:58,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30001877] [2022-01-19 00:45:58,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:58,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:45:58,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:58,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:45:58,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:45:58,540 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:45:58,540 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 315 transitions, 2761 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:58,540 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:58,541 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:45:58,541 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:45:59,865 INFO L129 PetriNetUnfolder]: 553/2071 cut-off events. [2022-01-19 00:45:59,866 INFO L130 PetriNetUnfolder]: For 59596/59628 co-relation queries the response was YES. [2022-01-19 00:45:59,893 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15469 conditions, 2071 events. 553/2071 cut-off events. For 59596/59628 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 15102 event pairs, 127 based on Foata normal form. 1/2027 useless extension candidates. Maximal degree in co-relation 15218. Up to 335 conditions per place. [2022-01-19 00:45:59,899 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 324 selfloop transitions, 62 changer transitions 114/641 dead transitions. [2022-01-19 00:45:59,899 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 557 places, 641 transitions, 10230 flow [2022-01-19 00:45:59,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-01-19 00:45:59,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2022-01-19 00:45:59,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 9230 transitions. [2022-01-19 00:45:59,903 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7577996715927751 [2022-01-19 00:45:59,903 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 9230 transitions. [2022-01-19 00:45:59,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 9230 transitions. [2022-01-19 00:45:59,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:45:59,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 9230 transitions. [2022-01-19 00:45:59,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 159.13793103448276) internal successors, (9230), 58 states have internal predecessors, (9230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:59,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:59,915 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:59,915 INFO L186 Difference]: Start difference. First operand has 538 places, 315 transitions, 2761 flow. Second operand 58 states and 9230 transitions. [2022-01-19 00:45:59,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 557 places, 641 transitions, 10230 flow [2022-01-19 00:46:00,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 641 transitions, 9319 flow, removed 439 selfloop flow, removed 33 redundant places. [2022-01-19 00:46:00,114 INFO L242 Difference]: Finished difference. Result has 574 places, 318 transitions, 2959 flow [2022-01-19 00:46:00,114 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2573, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=2959, PETRI_PLACES=574, PETRI_TRANSITIONS=318} [2022-01-19 00:46:00,114 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 387 predicate places. [2022-01-19 00:46:00,114 INFO L470 AbstractCegarLoop]: Abstraction has has 574 places, 318 transitions, 2959 flow [2022-01-19 00:46:00,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:00,115 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:00,115 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:00,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable310 [2022-01-19 00:46:00,115 INFO L402 AbstractCegarLoop]: === Iteration 312 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:00,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:00,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1446185702, now seen corresponding path program 8 times [2022-01-19 00:46:00,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:00,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848075698] [2022-01-19 00:46:00,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:00,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:00,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:00,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:00,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:00,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848075698] [2022-01-19 00:46:00,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848075698] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:00,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:00,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:00,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754172919] [2022-01-19 00:46:00,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:00,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:00,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:00,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:00,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:00,210 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:00,211 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 318 transitions, 2959 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:00,211 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:00,211 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:00,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:01,434 INFO L129 PetriNetUnfolder]: 588/2196 cut-off events. [2022-01-19 00:46:01,434 INFO L130 PetriNetUnfolder]: For 52660/52702 co-relation queries the response was YES. [2022-01-19 00:46:01,476 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15944 conditions, 2196 events. 588/2196 cut-off events. For 52660/52702 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 16339 event pairs, 165 based on Foata normal form. 15/2146 useless extension candidates. Maximal degree in co-relation 15675. Up to 504 conditions per place. [2022-01-19 00:46:01,484 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 207 selfloop transitions, 65 changer transitions 89/502 dead transitions. [2022-01-19 00:46:01,484 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 502 transitions, 7362 flow [2022-01-19 00:46:01,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-19 00:46:01,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-01-19 00:46:01,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 8589 transitions. [2022-01-19 00:46:01,488 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7574074074074074 [2022-01-19 00:46:01,488 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 8589 transitions. [2022-01-19 00:46:01,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 8589 transitions. [2022-01-19 00:46:01,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:01,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 8589 transitions. [2022-01-19 00:46:01,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 159.05555555555554) internal successors, (8589), 54 states have internal predecessors, (8589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:01,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 210.0) internal successors, (11550), 55 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:01,499 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 210.0) internal successors, (11550), 55 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:01,499 INFO L186 Difference]: Start difference. First operand has 574 places, 318 transitions, 2959 flow. Second operand 54 states and 8589 transitions. [2022-01-19 00:46:01,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 502 transitions, 7362 flow [2022-01-19 00:46:01,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 535 places, 502 transitions, 7031 flow, removed 124 selfloop flow, removed 45 redundant places. [2022-01-19 00:46:01,702 INFO L242 Difference]: Finished difference. Result has 578 places, 326 transitions, 3220 flow [2022-01-19 00:46:01,702 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2818, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=3220, PETRI_PLACES=578, PETRI_TRANSITIONS=326} [2022-01-19 00:46:01,703 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 391 predicate places. [2022-01-19 00:46:01,703 INFO L470 AbstractCegarLoop]: Abstraction has has 578 places, 326 transitions, 3220 flow [2022-01-19 00:46:01,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:01,703 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:01,703 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:01,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable311 [2022-01-19 00:46:01,703 INFO L402 AbstractCegarLoop]: === Iteration 313 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:01,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:01,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1568026750, now seen corresponding path program 9 times [2022-01-19 00:46:01,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:01,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864499620] [2022-01-19 00:46:01,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:01,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:01,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:01,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:01,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864499620] [2022-01-19 00:46:01,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864499620] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:01,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:01,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:01,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221574350] [2022-01-19 00:46:01,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:01,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:01,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:01,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:01,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:01,806 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:01,806 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 326 transitions, 3220 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:01,806 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:01,806 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:01,807 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:03,052 INFO L129 PetriNetUnfolder]: 600/2248 cut-off events. [2022-01-19 00:46:03,052 INFO L130 PetriNetUnfolder]: For 68600/68633 co-relation queries the response was YES. [2022-01-19 00:46:03,102 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17684 conditions, 2248 events. 600/2248 cut-off events. For 68600/68633 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 16723 event pairs, 325 based on Foata normal form. 1/2174 useless extension candidates. Maximal degree in co-relation 17415. Up to 535 conditions per place. [2022-01-19 00:46:03,110 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 225 selfloop transitions, 51 changer transitions 89/506 dead transitions. [2022-01-19 00:46:03,110 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 586 places, 506 transitions, 8643 flow [2022-01-19 00:46:03,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-01-19 00:46:03,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-01-19 00:46:03,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 8133 transitions. [2022-01-19 00:46:03,114 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7593837535014005 [2022-01-19 00:46:03,114 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 8133 transitions. [2022-01-19 00:46:03,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 8133 transitions. [2022-01-19 00:46:03,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:03,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 8133 transitions. [2022-01-19 00:46:03,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 159.47058823529412) internal successors, (8133), 51 states have internal predecessors, (8133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:03,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 210.0) internal successors, (10920), 52 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:03,124 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 210.0) internal successors, (10920), 52 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:03,124 INFO L186 Difference]: Start difference. First operand has 578 places, 326 transitions, 3220 flow. Second operand 51 states and 8133 transitions. [2022-01-19 00:46:03,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 586 places, 506 transitions, 8643 flow [2022-01-19 00:46:03,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 506 transitions, 7701 flow, removed 445 selfloop flow, removed 39 redundant places. [2022-01-19 00:46:03,352 INFO L242 Difference]: Finished difference. Result has 594 places, 344 transitions, 3761 flow [2022-01-19 00:46:03,352 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3088, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=3761, PETRI_PLACES=594, PETRI_TRANSITIONS=344} [2022-01-19 00:46:03,352 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 407 predicate places. [2022-01-19 00:46:03,352 INFO L470 AbstractCegarLoop]: Abstraction has has 594 places, 344 transitions, 3761 flow [2022-01-19 00:46:03,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:03,353 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:03,353 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:03,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable312 [2022-01-19 00:46:03,353 INFO L402 AbstractCegarLoop]: === Iteration 314 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:03,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:03,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1112861422, now seen corresponding path program 10 times [2022-01-19 00:46:03,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:03,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527659704] [2022-01-19 00:46:03,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:03,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:03,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:03,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:03,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527659704] [2022-01-19 00:46:03,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527659704] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:03,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:03,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:03,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298460516] [2022-01-19 00:46:03,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:03,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:03,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:03,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:03,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:03,450 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:03,451 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 344 transitions, 3761 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:03,451 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:03,451 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:03,451 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:04,673 INFO L129 PetriNetUnfolder]: 591/2229 cut-off events. [2022-01-19 00:46:04,673 INFO L130 PetriNetUnfolder]: For 78850/78883 co-relation queries the response was YES. [2022-01-19 00:46:04,717 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18401 conditions, 2229 events. 591/2229 cut-off events. For 78850/78883 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 16740 event pairs, 245 based on Foata normal form. 1/2151 useless extension candidates. Maximal degree in co-relation 18122. Up to 567 conditions per place. [2022-01-19 00:46:04,725 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 298 selfloop transitions, 79 changer transitions 93/611 dead transitions. [2022-01-19 00:46:04,725 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 611 transitions, 11743 flow [2022-01-19 00:46:04,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-01-19 00:46:04,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-01-19 00:46:04,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7963 transitions. [2022-01-19 00:46:04,729 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7583809523809524 [2022-01-19 00:46:04,729 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7963 transitions. [2022-01-19 00:46:04,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7963 transitions. [2022-01-19 00:46:04,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:04,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7963 transitions. [2022-01-19 00:46:04,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 159.26) internal successors, (7963), 50 states have internal predecessors, (7963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:04,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:04,738 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:04,738 INFO L186 Difference]: Start difference. First operand has 594 places, 344 transitions, 3761 flow. Second operand 50 states and 7963 transitions. [2022-01-19 00:46:04,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 611 transitions, 11743 flow [2022-01-19 00:46:05,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 611 transitions, 10512 flow, removed 596 selfloop flow, removed 38 redundant places. [2022-01-19 00:46:05,038 INFO L242 Difference]: Finished difference. Result has 611 places, 374 transitions, 4668 flow [2022-01-19 00:46:05,038 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3560, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=4668, PETRI_PLACES=611, PETRI_TRANSITIONS=374} [2022-01-19 00:46:05,038 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 424 predicate places. [2022-01-19 00:46:05,038 INFO L470 AbstractCegarLoop]: Abstraction has has 611 places, 374 transitions, 4668 flow [2022-01-19 00:46:05,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:05,039 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:05,039 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:05,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable313 [2022-01-19 00:46:05,039 INFO L402 AbstractCegarLoop]: === Iteration 315 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:05,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:05,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1032397360, now seen corresponding path program 11 times [2022-01-19 00:46:05,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:05,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554800820] [2022-01-19 00:46:05,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:05,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:05,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:05,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:05,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554800820] [2022-01-19 00:46:05,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554800820] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:05,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:05,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:05,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651284887] [2022-01-19 00:46:05,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:05,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:05,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:05,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:05,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:05,137 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:05,137 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 374 transitions, 4668 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:05,137 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:05,137 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:05,137 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:06,395 INFO L129 PetriNetUnfolder]: 584/2220 cut-off events. [2022-01-19 00:46:06,395 INFO L130 PetriNetUnfolder]: For 70110/70165 co-relation queries the response was YES. [2022-01-19 00:46:06,440 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17642 conditions, 2220 events. 584/2220 cut-off events. For 70110/70165 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 16679 event pairs, 169 based on Foata normal form. 19/2169 useless extension candidates. Maximal degree in co-relation 17355. Up to 539 conditions per place. [2022-01-19 00:46:06,448 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 238 selfloop transitions, 97 changer transitions 81/557 dead transitions. [2022-01-19 00:46:06,448 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 618 places, 557 transitions, 9909 flow [2022-01-19 00:46:06,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 00:46:06,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 00:46:06,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7328 transitions. [2022-01-19 00:46:06,452 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.758592132505176 [2022-01-19 00:46:06,452 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7328 transitions. [2022-01-19 00:46:06,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7328 transitions. [2022-01-19 00:46:06,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:06,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7328 transitions. [2022-01-19 00:46:06,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.30434782608697) internal successors, (7328), 46 states have internal predecessors, (7328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:06,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:06,461 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:06,461 INFO L186 Difference]: Start difference. First operand has 611 places, 374 transitions, 4668 flow. Second operand 46 states and 7328 transitions. [2022-01-19 00:46:06,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 618 places, 557 transitions, 9909 flow [2022-01-19 00:46:06,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 557 transitions, 8847 flow, removed 481 selfloop flow, removed 39 redundant places. [2022-01-19 00:46:06,770 INFO L242 Difference]: Finished difference. Result has 611 places, 378 transitions, 4604 flow [2022-01-19 00:46:06,770 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4185, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=4604, PETRI_PLACES=611, PETRI_TRANSITIONS=378} [2022-01-19 00:46:06,771 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 424 predicate places. [2022-01-19 00:46:06,771 INFO L470 AbstractCegarLoop]: Abstraction has has 611 places, 378 transitions, 4604 flow [2022-01-19 00:46:06,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:06,771 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:06,771 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:06,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable314 [2022-01-19 00:46:06,771 INFO L402 AbstractCegarLoop]: === Iteration 316 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:06,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:06,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1861600500, now seen corresponding path program 12 times [2022-01-19 00:46:06,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:06,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845274003] [2022-01-19 00:46:06,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:06,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:06,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:06,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:06,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845274003] [2022-01-19 00:46:06,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845274003] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:06,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:06,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:06,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165797232] [2022-01-19 00:46:06,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:06,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:06,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:06,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:06,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:06,870 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:06,871 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 378 transitions, 4604 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:06,871 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:06,871 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:06,871 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:08,181 INFO L129 PetriNetUnfolder]: 583/2207 cut-off events. [2022-01-19 00:46:08,181 INFO L130 PetriNetUnfolder]: For 64420/64473 co-relation queries the response was YES. [2022-01-19 00:46:08,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17349 conditions, 2207 events. 583/2207 cut-off events. For 64420/64473 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 16533 event pairs, 176 based on Foata normal form. 16/2150 useless extension candidates. Maximal degree in co-relation 17067. Up to 524 conditions per place. [2022-01-19 00:46:08,232 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 263 selfloop transitions, 84 changer transitions 92/580 dead transitions. [2022-01-19 00:46:08,232 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 580 transitions, 10695 flow [2022-01-19 00:46:08,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-01-19 00:46:08,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-01-19 00:46:08,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 8441 transitions. [2022-01-19 00:46:08,235 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7584007187780772 [2022-01-19 00:46:08,235 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 8441 transitions. [2022-01-19 00:46:08,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 8441 transitions. [2022-01-19 00:46:08,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:08,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 8441 transitions. [2022-01-19 00:46:08,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 159.26415094339623) internal successors, (8441), 53 states have internal predecessors, (8441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:08,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 210.0) internal successors, (11340), 54 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:08,245 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 210.0) internal successors, (11340), 54 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:08,246 INFO L186 Difference]: Start difference. First operand has 611 places, 378 transitions, 4604 flow. Second operand 53 states and 8441 transitions. [2022-01-19 00:46:08,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 580 transitions, 10695 flow [2022-01-19 00:46:08,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 580 transitions, 9956 flow, removed 323 selfloop flow, removed 35 redundant places. [2022-01-19 00:46:08,523 INFO L242 Difference]: Finished difference. Result has 638 places, 388 transitions, 5010 flow [2022-01-19 00:46:08,524 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4393, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=5010, PETRI_PLACES=638, PETRI_TRANSITIONS=388} [2022-01-19 00:46:08,524 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 451 predicate places. [2022-01-19 00:46:08,524 INFO L470 AbstractCegarLoop]: Abstraction has has 638 places, 388 transitions, 5010 flow [2022-01-19 00:46:08,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:08,524 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:08,524 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:08,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable315 [2022-01-19 00:46:08,524 INFO L402 AbstractCegarLoop]: === Iteration 317 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:08,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:08,525 INFO L85 PathProgramCache]: Analyzing trace with hash 50987626, now seen corresponding path program 13 times [2022-01-19 00:46:08,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:08,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875660341] [2022-01-19 00:46:08,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:08,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:08,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:08,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:08,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875660341] [2022-01-19 00:46:08,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875660341] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:08,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:08,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:08,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760636359] [2022-01-19 00:46:08,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:08,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:08,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:08,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:08,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:08,623 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:08,624 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 638 places, 388 transitions, 5010 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:08,624 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:08,624 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:08,624 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:09,731 INFO L129 PetriNetUnfolder]: 558/2120 cut-off events. [2022-01-19 00:46:09,731 INFO L130 PetriNetUnfolder]: For 67466/67526 co-relation queries the response was YES. [2022-01-19 00:46:09,774 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17249 conditions, 2120 events. 558/2120 cut-off events. For 67466/67526 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 15555 event pairs, 183 based on Foata normal form. 15/2056 useless extension candidates. Maximal degree in co-relation 16954. Up to 543 conditions per place. [2022-01-19 00:46:09,782 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 233 selfloop transitions, 103 changer transitions 66/543 dead transitions. [2022-01-19 00:46:09,782 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 543 transitions, 10111 flow [2022-01-19 00:46:09,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-19 00:46:09,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-01-19 00:46:09,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5441 transitions. [2022-01-19 00:46:09,784 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7620448179271708 [2022-01-19 00:46:09,784 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5441 transitions. [2022-01-19 00:46:09,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5441 transitions. [2022-01-19 00:46:09,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:09,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5441 transitions. [2022-01-19 00:46:09,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 160.02941176470588) internal successors, (5441), 34 states have internal predecessors, (5441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:09,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:09,791 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:09,791 INFO L186 Difference]: Start difference. First operand has 638 places, 388 transitions, 5010 flow. Second operand 34 states and 5441 transitions. [2022-01-19 00:46:09,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 543 transitions, 10111 flow [2022-01-19 00:46:10,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 590 places, 543 transitions, 9164 flow, removed 413 selfloop flow, removed 40 redundant places. [2022-01-19 00:46:10,114 INFO L242 Difference]: Finished difference. Result has 615 places, 406 transitions, 5557 flow [2022-01-19 00:46:10,114 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4710, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=5557, PETRI_PLACES=615, PETRI_TRANSITIONS=406} [2022-01-19 00:46:10,115 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 428 predicate places. [2022-01-19 00:46:10,115 INFO L470 AbstractCegarLoop]: Abstraction has has 615 places, 406 transitions, 5557 flow [2022-01-19 00:46:10,115 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:10,115 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:10,115 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:10,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable316 [2022-01-19 00:46:10,115 INFO L402 AbstractCegarLoop]: === Iteration 318 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:10,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:10,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1717249950, now seen corresponding path program 14 times [2022-01-19 00:46:10,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:10,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017055704] [2022-01-19 00:46:10,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:10,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:10,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:10,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:10,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:10,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017055704] [2022-01-19 00:46:10,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017055704] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:10,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:10,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:10,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429644649] [2022-01-19 00:46:10,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:10,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:10,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:10,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:10,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:10,210 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:10,211 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 615 places, 406 transitions, 5557 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:10,211 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:10,211 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:10,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:11,265 INFO L129 PetriNetUnfolder]: 554/2100 cut-off events. [2022-01-19 00:46:11,265 INFO L130 PetriNetUnfolder]: For 60126/60220 co-relation queries the response was YES. [2022-01-19 00:46:11,306 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16702 conditions, 2100 events. 554/2100 cut-off events. For 60126/60220 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 15398 event pairs, 166 based on Foata normal form. 27/2056 useless extension candidates. Maximal degree in co-relation 16421. Up to 528 conditions per place. [2022-01-19 00:46:11,314 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 250 selfloop transitions, 110 changer transitions 72/573 dead transitions. [2022-01-19 00:46:11,314 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 632 places, 573 transitions, 10306 flow [2022-01-19 00:46:11,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:46:11,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:46:11,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6066 transitions. [2022-01-19 00:46:11,317 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7601503759398496 [2022-01-19 00:46:11,317 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6066 transitions. [2022-01-19 00:46:11,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6066 transitions. [2022-01-19 00:46:11,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:11,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6066 transitions. [2022-01-19 00:46:11,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.6315789473684) internal successors, (6066), 38 states have internal predecessors, (6066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:11,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:11,324 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:11,324 INFO L186 Difference]: Start difference. First operand has 615 places, 406 transitions, 5557 flow. Second operand 38 states and 6066 transitions. [2022-01-19 00:46:11,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 632 places, 573 transitions, 10306 flow [2022-01-19 00:46:11,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 573 transitions, 9398 flow, removed 331 selfloop flow, removed 25 redundant places. [2022-01-19 00:46:11,642 INFO L242 Difference]: Finished difference. Result has 629 places, 408 transitions, 5441 flow [2022-01-19 00:46:11,643 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5055, PETRI_DIFFERENCE_MINUEND_PLACES=570, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=5441, PETRI_PLACES=629, PETRI_TRANSITIONS=408} [2022-01-19 00:46:11,643 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 442 predicate places. [2022-01-19 00:46:11,643 INFO L470 AbstractCegarLoop]: Abstraction has has 629 places, 408 transitions, 5441 flow [2022-01-19 00:46:11,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:11,643 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:11,643 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:11,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable317 [2022-01-19 00:46:11,643 INFO L402 AbstractCegarLoop]: === Iteration 319 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:11,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:11,644 INFO L85 PathProgramCache]: Analyzing trace with hash 808342620, now seen corresponding path program 15 times [2022-01-19 00:46:11,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:11,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902368827] [2022-01-19 00:46:11,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:11,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:11,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:11,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:11,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902368827] [2022-01-19 00:46:11,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902368827] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:11,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:11,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:11,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899999239] [2022-01-19 00:46:11,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:11,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:11,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:11,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:11,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:11,743 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:11,744 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 629 places, 408 transitions, 5441 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:11,744 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:11,744 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:11,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:12,969 INFO L129 PetriNetUnfolder]: 551/2137 cut-off events. [2022-01-19 00:46:12,969 INFO L130 PetriNetUnfolder]: For 60080/60164 co-relation queries the response was YES. [2022-01-19 00:46:13,011 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16827 conditions, 2137 events. 551/2137 cut-off events. For 60080/60164 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 15851 event pairs, 198 based on Foata normal form. 15/2077 useless extension candidates. Maximal degree in co-relation 16545. Up to 539 conditions per place. [2022-01-19 00:46:13,019 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 254 selfloop transitions, 111 changer transitions 81/587 dead transitions. [2022-01-19 00:46:13,019 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 646 places, 587 transitions, 10966 flow [2022-01-19 00:46:13,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-19 00:46:13,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-01-19 00:46:13,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 6702 transitions. [2022-01-19 00:46:13,022 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7598639455782313 [2022-01-19 00:46:13,022 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 6702 transitions. [2022-01-19 00:46:13,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 6702 transitions. [2022-01-19 00:46:13,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:13,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 6702 transitions. [2022-01-19 00:46:13,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 159.57142857142858) internal successors, (6702), 42 states have internal predecessors, (6702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:13,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 210.0) internal successors, (9030), 43 states have internal predecessors, (9030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:13,030 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 210.0) internal successors, (9030), 43 states have internal predecessors, (9030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:13,030 INFO L186 Difference]: Start difference. First operand has 629 places, 408 transitions, 5441 flow. Second operand 42 states and 6702 transitions. [2022-01-19 00:46:13,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 646 places, 587 transitions, 10966 flow [2022-01-19 00:46:13,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 622 places, 587 transitions, 10616 flow, removed 114 selfloop flow, removed 24 redundant places. [2022-01-19 00:46:13,409 INFO L242 Difference]: Finished difference. Result has 657 places, 430 transitions, 6285 flow [2022-01-19 00:46:13,409 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5249, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=6285, PETRI_PLACES=657, PETRI_TRANSITIONS=430} [2022-01-19 00:46:13,409 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 470 predicate places. [2022-01-19 00:46:13,410 INFO L470 AbstractCegarLoop]: Abstraction has has 657 places, 430 transitions, 6285 flow [2022-01-19 00:46:13,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:13,410 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:13,410 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:13,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable318 [2022-01-19 00:46:13,410 INFO L402 AbstractCegarLoop]: === Iteration 320 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:13,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:13,411 INFO L85 PathProgramCache]: Analyzing trace with hash 350149278, now seen corresponding path program 16 times [2022-01-19 00:46:13,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:13,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181535061] [2022-01-19 00:46:13,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:13,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:13,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:13,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:13,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181535061] [2022-01-19 00:46:13,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181535061] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:13,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:13,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:13,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121584733] [2022-01-19 00:46:13,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:13,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:13,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:13,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:13,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:13,504 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:13,505 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 657 places, 430 transitions, 6285 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:13,505 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:13,505 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:13,505 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:14,422 INFO L129 PetriNetUnfolder]: 509/2004 cut-off events. [2022-01-19 00:46:14,423 INFO L130 PetriNetUnfolder]: For 58596/58674 co-relation queries the response was YES. [2022-01-19 00:46:14,464 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15922 conditions, 2004 events. 509/2004 cut-off events. For 58596/58674 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 14501 event pairs, 164 based on Foata normal form. 27/1963 useless extension candidates. Maximal degree in co-relation 15623. Up to 517 conditions per place. [2022-01-19 00:46:14,471 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 251 selfloop transitions, 93 changer transitions 70/555 dead transitions. [2022-01-19 00:46:14,471 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 657 places, 555 transitions, 10097 flow [2022-01-19 00:46:14,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:46:14,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:46:14,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4793 transitions. [2022-01-19 00:46:14,473 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7607936507936508 [2022-01-19 00:46:14,473 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4793 transitions. [2022-01-19 00:46:14,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4793 transitions. [2022-01-19 00:46:14,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:14,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4793 transitions. [2022-01-19 00:46:14,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.76666666666668) internal successors, (4793), 30 states have internal predecessors, (4793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:14,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:14,479 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:14,479 INFO L186 Difference]: Start difference. First operand has 657 places, 430 transitions, 6285 flow. Second operand 30 states and 4793 transitions. [2022-01-19 00:46:14,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 657 places, 555 transitions, 10097 flow [2022-01-19 00:46:14,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 555 transitions, 9411 flow, removed 254 selfloop flow, removed 32 redundant places. [2022-01-19 00:46:14,863 INFO L242 Difference]: Finished difference. Result has 636 places, 387 transitions, 5137 flow [2022-01-19 00:46:14,863 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5842, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=430, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5137, PETRI_PLACES=636, PETRI_TRANSITIONS=387} [2022-01-19 00:46:14,863 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 449 predicate places. [2022-01-19 00:46:14,863 INFO L470 AbstractCegarLoop]: Abstraction has has 636 places, 387 transitions, 5137 flow [2022-01-19 00:46:14,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:14,864 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:14,864 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:14,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable319 [2022-01-19 00:46:14,864 INFO L402 AbstractCegarLoop]: === Iteration 321 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:14,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:14,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1409998716, now seen corresponding path program 17 times [2022-01-19 00:46:14,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:14,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029889434] [2022-01-19 00:46:14,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:14,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:14,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:14,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:14,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029889434] [2022-01-19 00:46:14,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029889434] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:14,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:14,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:14,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393137047] [2022-01-19 00:46:14,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:14,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:14,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:14,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:14,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:14,965 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:14,965 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 636 places, 387 transitions, 5137 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:14,965 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:14,966 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:14,966 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:16,169 INFO L129 PetriNetUnfolder]: 556/2152 cut-off events. [2022-01-19 00:46:16,170 INFO L130 PetriNetUnfolder]: For 58966/59024 co-relation queries the response was YES. [2022-01-19 00:46:16,212 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16992 conditions, 2152 events. 556/2152 cut-off events. For 58966/59024 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 15989 event pairs, 188 based on Foata normal form. 17/2098 useless extension candidates. Maximal degree in co-relation 16711. Up to 519 conditions per place. [2022-01-19 00:46:16,220 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 250 selfloop transitions, 110 changer transitions 83/584 dead transitions. [2022-01-19 00:46:16,221 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 633 places, 584 transitions, 10630 flow [2022-01-19 00:46:16,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 00:46:16,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 00:46:16,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7179 transitions. [2022-01-19 00:46:16,224 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7596825396825397 [2022-01-19 00:46:16,224 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7179 transitions. [2022-01-19 00:46:16,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7179 transitions. [2022-01-19 00:46:16,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:16,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7179 transitions. [2022-01-19 00:46:16,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.53333333333333) internal successors, (7179), 45 states have internal predecessors, (7179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:16,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:16,232 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:16,232 INFO L186 Difference]: Start difference. First operand has 636 places, 387 transitions, 5137 flow. Second operand 45 states and 7179 transitions. [2022-01-19 00:46:16,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 633 places, 584 transitions, 10630 flow [2022-01-19 00:46:16,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 584 transitions, 9317 flow, removed 183 selfloop flow, removed 41 redundant places. [2022-01-19 00:46:16,537 INFO L242 Difference]: Finished difference. Result has 626 places, 412 transitions, 5254 flow [2022-01-19 00:46:16,538 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4427, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=387, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=5254, PETRI_PLACES=626, PETRI_TRANSITIONS=412} [2022-01-19 00:46:16,538 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 439 predicate places. [2022-01-19 00:46:16,538 INFO L470 AbstractCegarLoop]: Abstraction has has 626 places, 412 transitions, 5254 flow [2022-01-19 00:46:16,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:16,538 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:16,538 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:16,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable320 [2022-01-19 00:46:16,538 INFO L402 AbstractCegarLoop]: === Iteration 322 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:16,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:16,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1728534254, now seen corresponding path program 18 times [2022-01-19 00:46:16,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:16,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756900489] [2022-01-19 00:46:16,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:16,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:16,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:16,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:16,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756900489] [2022-01-19 00:46:16,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756900489] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:16,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:16,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:16,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238959778] [2022-01-19 00:46:16,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:16,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:16,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:16,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:16,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:16,642 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:16,643 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 626 places, 412 transitions, 5254 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:16,643 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:16,643 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:16,643 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:17,882 INFO L129 PetriNetUnfolder]: 550/2127 cut-off events. [2022-01-19 00:46:17,882 INFO L130 PetriNetUnfolder]: For 52306/52345 co-relation queries the response was YES. [2022-01-19 00:46:17,925 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16049 conditions, 2127 events. 550/2127 cut-off events. For 52306/52345 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 15726 event pairs, 179 based on Foata normal form. 11/2068 useless extension candidates. Maximal degree in co-relation 15760. Up to 515 conditions per place. [2022-01-19 00:46:17,933 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 259 selfloop transitions, 109 changer transitions 85/594 dead transitions. [2022-01-19 00:46:17,933 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 594 transitions, 10413 flow [2022-01-19 00:46:17,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 00:46:17,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 00:46:17,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7339 transitions. [2022-01-19 00:46:17,936 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7597308488612836 [2022-01-19 00:46:17,936 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7339 transitions. [2022-01-19 00:46:17,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7339 transitions. [2022-01-19 00:46:17,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:17,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7339 transitions. [2022-01-19 00:46:17,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.54347826086956) internal successors, (7339), 46 states have internal predecessors, (7339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:17,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:17,945 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:17,945 INFO L186 Difference]: Start difference. First operand has 626 places, 412 transitions, 5254 flow. Second operand 46 states and 7339 transitions. [2022-01-19 00:46:17,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 594 transitions, 10413 flow [2022-01-19 00:46:18,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 609 places, 594 transitions, 9890 flow, removed 221 selfloop flow, removed 30 redundant places. [2022-01-19 00:46:18,256 INFO L242 Difference]: Finished difference. Result has 642 places, 417 transitions, 5571 flow [2022-01-19 00:46:18,256 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5054, PETRI_DIFFERENCE_MINUEND_PLACES=564, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=5571, PETRI_PLACES=642, PETRI_TRANSITIONS=417} [2022-01-19 00:46:18,256 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 455 predicate places. [2022-01-19 00:46:18,256 INFO L470 AbstractCegarLoop]: Abstraction has has 642 places, 417 transitions, 5571 flow [2022-01-19 00:46:18,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:18,257 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:18,257 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:18,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable321 [2022-01-19 00:46:18,257 INFO L402 AbstractCegarLoop]: === Iteration 323 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:18,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:18,257 INFO L85 PathProgramCache]: Analyzing trace with hash 913497400, now seen corresponding path program 19 times [2022-01-19 00:46:18,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:18,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80235045] [2022-01-19 00:46:18,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:18,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:18,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:18,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:18,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80235045] [2022-01-19 00:46:18,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80235045] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:18,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:18,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:18,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701198261] [2022-01-19 00:46:18,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:18,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:18,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:18,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:18,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:18,364 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:18,365 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 642 places, 417 transitions, 5571 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:18,365 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:18,365 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:18,365 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:19,434 INFO L129 PetriNetUnfolder]: 568/2151 cut-off events. [2022-01-19 00:46:19,434 INFO L130 PetriNetUnfolder]: For 54214/54269 co-relation queries the response was YES. [2022-01-19 00:46:19,476 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16563 conditions, 2151 events. 568/2151 cut-off events. For 54214/54269 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 15931 event pairs, 193 based on Foata normal form. 17/2091 useless extension candidates. Maximal degree in co-relation 16268. Up to 536 conditions per place. [2022-01-19 00:46:19,484 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 250 selfloop transitions, 124 changer transitions 73/588 dead transitions. [2022-01-19 00:46:19,484 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 645 places, 588 transitions, 10323 flow [2022-01-19 00:46:19,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 00:46:19,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 00:46:19,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5917 transitions. [2022-01-19 00:46:19,487 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7615186615186615 [2022-01-19 00:46:19,487 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5917 transitions. [2022-01-19 00:46:19,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5917 transitions. [2022-01-19 00:46:19,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:19,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5917 transitions. [2022-01-19 00:46:19,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 159.9189189189189) internal successors, (5917), 37 states have internal predecessors, (5917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:19,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:19,493 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:19,493 INFO L186 Difference]: Start difference. First operand has 642 places, 417 transitions, 5571 flow. Second operand 37 states and 5917 transitions. [2022-01-19 00:46:19,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 645 places, 588 transitions, 10323 flow [2022-01-19 00:46:19,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 588 transitions, 9837 flow, removed 187 selfloop flow, removed 30 redundant places. [2022-01-19 00:46:19,802 INFO L242 Difference]: Finished difference. Result has 639 places, 436 transitions, 6125 flow [2022-01-19 00:46:19,802 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5335, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=417, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=6125, PETRI_PLACES=639, PETRI_TRANSITIONS=436} [2022-01-19 00:46:19,802 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 452 predicate places. [2022-01-19 00:46:19,803 INFO L470 AbstractCegarLoop]: Abstraction has has 639 places, 436 transitions, 6125 flow [2022-01-19 00:46:19,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:19,803 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:19,803 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:19,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable322 [2022-01-19 00:46:19,803 INFO L402 AbstractCegarLoop]: === Iteration 324 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:19,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:19,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1548259760, now seen corresponding path program 20 times [2022-01-19 00:46:19,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:19,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558340564] [2022-01-19 00:46:19,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:19,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:19,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:19,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:19,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:19,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558340564] [2022-01-19 00:46:19,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558340564] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:19,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:19,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:19,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777832590] [2022-01-19 00:46:19,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:19,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:19,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:19,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:19,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:19,898 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:19,898 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 436 transitions, 6125 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:19,898 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:19,898 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:19,899 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:21,000 INFO L129 PetriNetUnfolder]: 562/2178 cut-off events. [2022-01-19 00:46:21,001 INFO L130 PetriNetUnfolder]: For 54336/54392 co-relation queries the response was YES. [2022-01-19 00:46:21,044 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16671 conditions, 2178 events. 562/2178 cut-off events. For 54336/54392 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 16270 event pairs, 190 based on Foata normal form. 17/2123 useless extension candidates. Maximal degree in co-relation 16380. Up to 532 conditions per place. [2022-01-19 00:46:21,051 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 257 selfloop transitions, 123 changer transitions 72/593 dead transitions. [2022-01-19 00:46:21,052 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 653 places, 593 transitions, 10654 flow [2022-01-19 00:46:21,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:46:21,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:46:21,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6077 transitions. [2022-01-19 00:46:21,054 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7615288220551378 [2022-01-19 00:46:21,054 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6077 transitions. [2022-01-19 00:46:21,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6077 transitions. [2022-01-19 00:46:21,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:21,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6077 transitions. [2022-01-19 00:46:21,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.92105263157896) internal successors, (6077), 38 states have internal predecessors, (6077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:21,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:21,062 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:21,062 INFO L186 Difference]: Start difference. First operand has 639 places, 436 transitions, 6125 flow. Second operand 38 states and 6077 transitions. [2022-01-19 00:46:21,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 653 places, 593 transitions, 10654 flow [2022-01-19 00:46:21,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 632 places, 593 transitions, 10255 flow, removed 146 selfloop flow, removed 21 redundant places. [2022-01-19 00:46:21,406 INFO L242 Difference]: Finished difference. Result has 655 places, 442 transitions, 6460 flow [2022-01-19 00:46:21,407 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5919, PETRI_DIFFERENCE_MINUEND_PLACES=595, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=6460, PETRI_PLACES=655, PETRI_TRANSITIONS=442} [2022-01-19 00:46:21,407 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 468 predicate places. [2022-01-19 00:46:21,407 INFO L470 AbstractCegarLoop]: Abstraction has has 655 places, 442 transitions, 6460 flow [2022-01-19 00:46:21,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:21,407 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:21,407 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:21,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable323 [2022-01-19 00:46:21,408 INFO L402 AbstractCegarLoop]: === Iteration 325 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:21,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:21,408 INFO L85 PathProgramCache]: Analyzing trace with hash -870591154, now seen corresponding path program 21 times [2022-01-19 00:46:21,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:21,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717710023] [2022-01-19 00:46:21,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:21,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:21,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:21,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:21,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:21,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717710023] [2022-01-19 00:46:21,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717710023] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:21,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:21,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:21,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073661862] [2022-01-19 00:46:21,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:21,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:21,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:21,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:21,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:21,526 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:21,527 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 655 places, 442 transitions, 6460 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:21,527 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:21,527 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:21,527 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:22,635 INFO L129 PetriNetUnfolder]: 558/2180 cut-off events. [2022-01-19 00:46:22,635 INFO L130 PetriNetUnfolder]: For 55349/55405 co-relation queries the response was YES. [2022-01-19 00:46:22,679 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16734 conditions, 2180 events. 558/2180 cut-off events. For 55349/55405 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 16319 event pairs, 182 based on Foata normal form. 17/2130 useless extension candidates. Maximal degree in co-relation 16437. Up to 528 conditions per place. [2022-01-19 00:46:22,686 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 265 selfloop transitions, 119 changer transitions 74/599 dead transitions. [2022-01-19 00:46:22,686 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 599 transitions, 11024 flow [2022-01-19 00:46:22,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:46:22,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:46:22,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6077 transitions. [2022-01-19 00:46:22,689 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7615288220551378 [2022-01-19 00:46:22,689 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6077 transitions. [2022-01-19 00:46:22,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6077 transitions. [2022-01-19 00:46:22,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:22,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6077 transitions. [2022-01-19 00:46:22,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.92105263157896) internal successors, (6077), 38 states have internal predecessors, (6077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:22,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:22,696 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:22,696 INFO L186 Difference]: Start difference. First operand has 655 places, 442 transitions, 6460 flow. Second operand 38 states and 6077 transitions. [2022-01-19 00:46:22,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 599 transitions, 11024 flow [2022-01-19 00:46:23,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 648 places, 599 transitions, 10651 flow, removed 140 selfloop flow, removed 20 redundant places. [2022-01-19 00:46:23,052 INFO L242 Difference]: Finished difference. Result has 671 places, 447 transitions, 6738 flow [2022-01-19 00:46:23,052 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6243, PETRI_DIFFERENCE_MINUEND_PLACES=611, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=6738, PETRI_PLACES=671, PETRI_TRANSITIONS=447} [2022-01-19 00:46:23,052 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 484 predicate places. [2022-01-19 00:46:23,052 INFO L470 AbstractCegarLoop]: Abstraction has has 671 places, 447 transitions, 6738 flow [2022-01-19 00:46:23,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:23,052 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:23,053 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:23,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable324 [2022-01-19 00:46:23,053 INFO L402 AbstractCegarLoop]: === Iteration 326 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:23,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:23,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1594329086, now seen corresponding path program 22 times [2022-01-19 00:46:23,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:23,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897442807] [2022-01-19 00:46:23,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:23,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:23,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:23,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:23,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:23,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897442807] [2022-01-19 00:46:23,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897442807] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:23,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:23,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:23,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420813333] [2022-01-19 00:46:23,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:23,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:23,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:23,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:23,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:23,158 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:23,159 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 671 places, 447 transitions, 6738 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:23,159 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:23,159 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:23,159 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:24,166 INFO L129 PetriNetUnfolder]: 546/2142 cut-off events. [2022-01-19 00:46:24,166 INFO L130 PetriNetUnfolder]: For 55242/55278 co-relation queries the response was YES. [2022-01-19 00:46:24,211 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16559 conditions, 2142 events. 546/2142 cut-off events. For 55242/55278 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 15911 event pairs, 186 based on Foata normal form. 11/2085 useless extension candidates. Maximal degree in co-relation 16256. Up to 535 conditions per place. [2022-01-19 00:46:24,218 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 258 selfloop transitions, 120 changer transitions 62/581 dead transitions. [2022-01-19 00:46:24,218 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 676 places, 581 transitions, 10675 flow [2022-01-19 00:46:24,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:46:24,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:46:24,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4815 transitions. [2022-01-19 00:46:24,221 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2022-01-19 00:46:24,221 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4815 transitions. [2022-01-19 00:46:24,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4815 transitions. [2022-01-19 00:46:24,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:24,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4815 transitions. [2022-01-19 00:46:24,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.5) internal successors, (4815), 30 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:24,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:24,227 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:24,227 INFO L186 Difference]: Start difference. First operand has 671 places, 447 transitions, 6738 flow. Second operand 30 states and 4815 transitions. [2022-01-19 00:46:24,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 676 places, 581 transitions, 10675 flow [2022-01-19 00:46:24,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 655 places, 581 transitions, 10314 flow, removed 134 selfloop flow, removed 21 redundant places. [2022-01-19 00:46:24,594 INFO L242 Difference]: Finished difference. Result has 668 places, 453 transitions, 6955 flow [2022-01-19 00:46:24,594 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6501, PETRI_DIFFERENCE_MINUEND_PLACES=626, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=6955, PETRI_PLACES=668, PETRI_TRANSITIONS=453} [2022-01-19 00:46:24,595 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 481 predicate places. [2022-01-19 00:46:24,595 INFO L470 AbstractCegarLoop]: Abstraction has has 668 places, 453 transitions, 6955 flow [2022-01-19 00:46:24,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:24,595 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:24,595 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:24,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable325 [2022-01-19 00:46:24,595 INFO L402 AbstractCegarLoop]: === Iteration 327 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:24,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:24,596 INFO L85 PathProgramCache]: Analyzing trace with hash 581066740, now seen corresponding path program 23 times [2022-01-19 00:46:24,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:24,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514488159] [2022-01-19 00:46:24,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:24,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:24,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:24,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:24,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:24,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514488159] [2022-01-19 00:46:24,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514488159] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:24,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:24,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:24,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106505817] [2022-01-19 00:46:24,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:24,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:24,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:24,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:24,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:24,689 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:24,690 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 668 places, 453 transitions, 6955 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:24,690 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:24,690 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:24,690 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:25,657 INFO L129 PetriNetUnfolder]: 554/2148 cut-off events. [2022-01-19 00:46:25,658 INFO L130 PetriNetUnfolder]: For 56622/56657 co-relation queries the response was YES. [2022-01-19 00:46:25,702 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16824 conditions, 2148 events. 554/2148 cut-off events. For 56622/56657 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 15930 event pairs, 181 based on Foata normal form. 11/2091 useless extension candidates. Maximal degree in co-relation 16526. Up to 540 conditions per place. [2022-01-19 00:46:25,709 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 257 selfloop transitions, 134 changer transitions 63/595 dead transitions. [2022-01-19 00:46:25,709 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 681 places, 595 transitions, 11141 flow [2022-01-19 00:46:25,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:46:25,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:46:25,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4655 transitions. [2022-01-19 00:46:25,712 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2022-01-19 00:46:25,712 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4655 transitions. [2022-01-19 00:46:25,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4655 transitions. [2022-01-19 00:46:25,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:25,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4655 transitions. [2022-01-19 00:46:25,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.51724137931035) internal successors, (4655), 29 states have internal predecessors, (4655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:25,717 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:25,717 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:25,717 INFO L186 Difference]: Start difference. First operand has 668 places, 453 transitions, 6955 flow. Second operand 29 states and 4655 transitions. [2022-01-19 00:46:25,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 681 places, 595 transitions, 11141 flow [2022-01-19 00:46:26,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 667 places, 595 transitions, 10808 flow, removed 109 selfloop flow, removed 14 redundant places. [2022-01-19 00:46:26,105 INFO L242 Difference]: Finished difference. Result has 681 places, 465 transitions, 7380 flow [2022-01-19 00:46:26,105 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6724, PETRI_DIFFERENCE_MINUEND_PLACES=639, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7380, PETRI_PLACES=681, PETRI_TRANSITIONS=465} [2022-01-19 00:46:26,106 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 494 predicate places. [2022-01-19 00:46:26,106 INFO L470 AbstractCegarLoop]: Abstraction has has 681 places, 465 transitions, 7380 flow [2022-01-19 00:46:26,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:26,106 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:26,106 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:26,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable326 [2022-01-19 00:46:26,106 INFO L402 AbstractCegarLoop]: === Iteration 328 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:26,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:26,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1205096152, now seen corresponding path program 24 times [2022-01-19 00:46:26,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:26,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244100200] [2022-01-19 00:46:26,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:26,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:26,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:26,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:26,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244100200] [2022-01-19 00:46:26,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244100200] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:26,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:26,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:26,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941518299] [2022-01-19 00:46:26,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:26,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:26,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:26,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:26,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:26,204 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:26,205 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 681 places, 465 transitions, 7380 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:26,205 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:26,205 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:26,205 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:27,185 INFO L129 PetriNetUnfolder]: 556/2160 cut-off events. [2022-01-19 00:46:27,185 INFO L130 PetriNetUnfolder]: For 57522/57578 co-relation queries the response was YES. [2022-01-19 00:46:27,231 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17127 conditions, 2160 events. 556/2160 cut-off events. For 57522/57578 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 16055 event pairs, 187 based on Foata normal form. 17/2107 useless extension candidates. Maximal degree in co-relation 16825. Up to 543 conditions per place. [2022-01-19 00:46:27,239 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 263 selfloop transitions, 134 changer transitions 61/599 dead transitions. [2022-01-19 00:46:27,239 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 695 places, 599 transitions, 11477 flow [2022-01-19 00:46:27,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:46:27,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:46:27,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4655 transitions. [2022-01-19 00:46:27,241 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2022-01-19 00:46:27,241 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4655 transitions. [2022-01-19 00:46:27,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4655 transitions. [2022-01-19 00:46:27,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:27,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4655 transitions. [2022-01-19 00:46:27,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.51724137931035) internal successors, (4655), 29 states have internal predecessors, (4655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:27,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:27,247 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:27,247 INFO L186 Difference]: Start difference. First operand has 681 places, 465 transitions, 7380 flow. Second operand 29 states and 4655 transitions. [2022-01-19 00:46:27,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 695 places, 599 transitions, 11477 flow [2022-01-19 00:46:27,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 682 places, 599 transitions, 11166 flow, removed 78 selfloop flow, removed 13 redundant places. [2022-01-19 00:46:27,660 INFO L242 Difference]: Finished difference. Result has 695 places, 476 transitions, 7798 flow [2022-01-19 00:46:27,660 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7155, PETRI_DIFFERENCE_MINUEND_PLACES=654, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=465, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=7798, PETRI_PLACES=695, PETRI_TRANSITIONS=476} [2022-01-19 00:46:27,660 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 508 predicate places. [2022-01-19 00:46:27,660 INFO L470 AbstractCegarLoop]: Abstraction has has 695 places, 476 transitions, 7798 flow [2022-01-19 00:46:27,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:27,660 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:27,661 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:27,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable327 [2022-01-19 00:46:27,661 INFO L402 AbstractCegarLoop]: === Iteration 329 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:27,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:27,661 INFO L85 PathProgramCache]: Analyzing trace with hash -93390314, now seen corresponding path program 25 times [2022-01-19 00:46:27,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:27,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386216381] [2022-01-19 00:46:27,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:27,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:27,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:27,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:27,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:27,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386216381] [2022-01-19 00:46:27,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386216381] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:27,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:27,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:27,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489792997] [2022-01-19 00:46:27,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:27,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:27,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:27,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:27,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:27,760 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:27,761 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 695 places, 476 transitions, 7798 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:27,761 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:27,761 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:27,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:28,794 INFO L129 PetriNetUnfolder]: 551/2149 cut-off events. [2022-01-19 00:46:28,794 INFO L130 PetriNetUnfolder]: For 57321/57379 co-relation queries the response was YES. [2022-01-19 00:46:28,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17011 conditions, 2149 events. 551/2149 cut-off events. For 57321/57379 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 15945 event pairs, 182 based on Foata normal form. 17/2096 useless extension candidates. Maximal degree in co-relation 16704. Up to 539 conditions per place. [2022-01-19 00:46:28,848 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 275 selfloop transitions, 128 changer transitions 63/607 dead transitions. [2022-01-19 00:46:28,848 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 710 places, 607 transitions, 11738 flow [2022-01-19 00:46:28,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:46:28,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:46:28,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4815 transitions. [2022-01-19 00:46:28,851 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2022-01-19 00:46:28,851 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4815 transitions. [2022-01-19 00:46:28,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4815 transitions. [2022-01-19 00:46:28,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:28,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4815 transitions. [2022-01-19 00:46:28,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.5) internal successors, (4815), 30 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:28,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:28,857 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:28,857 INFO L186 Difference]: Start difference. First operand has 695 places, 476 transitions, 7798 flow. Second operand 30 states and 4815 transitions. [2022-01-19 00:46:28,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 710 places, 607 transitions, 11738 flow [2022-01-19 00:46:29,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 698 places, 607 transitions, 11400 flow, removed 57 selfloop flow, removed 12 redundant places. [2022-01-19 00:46:29,280 INFO L242 Difference]: Finished difference. Result has 711 places, 481 transitions, 7948 flow [2022-01-19 00:46:29,280 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7497, PETRI_DIFFERENCE_MINUEND_PLACES=669, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7948, PETRI_PLACES=711, PETRI_TRANSITIONS=481} [2022-01-19 00:46:29,280 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 524 predicate places. [2022-01-19 00:46:29,280 INFO L470 AbstractCegarLoop]: Abstraction has has 711 places, 481 transitions, 7948 flow [2022-01-19 00:46:29,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:29,281 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:29,281 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:29,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable328 [2022-01-19 00:46:29,281 INFO L402 AbstractCegarLoop]: === Iteration 330 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:29,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:29,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1404291102, now seen corresponding path program 26 times [2022-01-19 00:46:29,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:29,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118183667] [2022-01-19 00:46:29,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:29,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:29,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:29,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:29,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118183667] [2022-01-19 00:46:29,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118183667] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:29,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:29,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:29,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803551268] [2022-01-19 00:46:29,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:29,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:29,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:29,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:29,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:29,380 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:29,380 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 711 places, 481 transitions, 7948 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:29,380 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:29,380 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:29,380 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:30,397 INFO L129 PetriNetUnfolder]: 533/2120 cut-off events. [2022-01-19 00:46:30,397 INFO L130 PetriNetUnfolder]: For 56500/56556 co-relation queries the response was YES. [2022-01-19 00:46:30,444 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16697 conditions, 2120 events. 533/2120 cut-off events. For 56500/56556 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 15713 event pairs, 179 based on Foata normal form. 17/2069 useless extension candidates. Maximal degree in co-relation 16385. Up to 534 conditions per place. [2022-01-19 00:46:30,452 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 268 selfloop transitions, 112 changer transitions 67/588 dead transitions. [2022-01-19 00:46:30,452 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 725 places, 588 transitions, 11233 flow [2022-01-19 00:46:30,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:46:30,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:46:30,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4806 transitions. [2022-01-19 00:46:30,455 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628571428571429 [2022-01-19 00:46:30,455 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4806 transitions. [2022-01-19 00:46:30,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4806 transitions. [2022-01-19 00:46:30,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:30,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4806 transitions. [2022-01-19 00:46:30,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.2) internal successors, (4806), 30 states have internal predecessors, (4806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:30,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:30,461 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:30,461 INFO L186 Difference]: Start difference. First operand has 711 places, 481 transitions, 7948 flow. Second operand 30 states and 4806 transitions. [2022-01-19 00:46:30,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 725 places, 588 transitions, 11233 flow [2022-01-19 00:46:30,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 711 places, 588 transitions, 10929 flow, removed 99 selfloop flow, removed 14 redundant places. [2022-01-19 00:46:30,901 INFO L242 Difference]: Finished difference. Result has 720 places, 459 transitions, 7336 flow [2022-01-19 00:46:30,901 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7694, PETRI_DIFFERENCE_MINUEND_PLACES=682, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=7336, PETRI_PLACES=720, PETRI_TRANSITIONS=459} [2022-01-19 00:46:30,902 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 533 predicate places. [2022-01-19 00:46:30,902 INFO L470 AbstractCegarLoop]: Abstraction has has 720 places, 459 transitions, 7336 flow [2022-01-19 00:46:30,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:30,902 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:30,902 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:30,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable329 [2022-01-19 00:46:30,902 INFO L402 AbstractCegarLoop]: === Iteration 331 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:30,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:30,902 INFO L85 PathProgramCache]: Analyzing trace with hash -72700492, now seen corresponding path program 27 times [2022-01-19 00:46:30,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:30,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296315035] [2022-01-19 00:46:30,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:30,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:30,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:30,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:30,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296315035] [2022-01-19 00:46:30,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296315035] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:30,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:30,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:30,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242728716] [2022-01-19 00:46:30,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:30,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:30,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:30,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:30,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:30,999 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:31,000 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 720 places, 459 transitions, 7336 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:31,000 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:31,000 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:31,000 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:31,960 INFO L129 PetriNetUnfolder]: 506/2032 cut-off events. [2022-01-19 00:46:31,960 INFO L130 PetriNetUnfolder]: For 55083/55120 co-relation queries the response was YES. [2022-01-19 00:46:32,005 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15920 conditions, 2032 events. 506/2032 cut-off events. For 55083/55120 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 14800 event pairs, 174 based on Foata normal form. 11/1976 useless extension candidates. Maximal degree in co-relation 15609. Up to 519 conditions per place. [2022-01-19 00:46:32,013 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 254 selfloop transitions, 88 changer transitions 66/549 dead transitions. [2022-01-19 00:46:32,013 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 719 places, 549 transitions, 10179 flow [2022-01-19 00:46:32,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 00:46:32,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 00:46:32,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4332 transitions. [2022-01-19 00:46:32,015 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764021164021164 [2022-01-19 00:46:32,015 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4332 transitions. [2022-01-19 00:46:32,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4332 transitions. [2022-01-19 00:46:32,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:32,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4332 transitions. [2022-01-19 00:46:32,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.44444444444446) internal successors, (4332), 27 states have internal predecessors, (4332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:32,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:32,021 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:32,021 INFO L186 Difference]: Start difference. First operand has 720 places, 459 transitions, 7336 flow. Second operand 27 states and 4332 transitions. [2022-01-19 00:46:32,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 719 places, 549 transitions, 10179 flow [2022-01-19 00:46:32,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 690 places, 549 transitions, 9722 flow, removed 57 selfloop flow, removed 29 redundant places. [2022-01-19 00:46:32,429 INFO L242 Difference]: Finished difference. Result has 697 places, 422 transitions, 6278 flow [2022-01-19 00:46:32,429 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6951, PETRI_DIFFERENCE_MINUEND_PLACES=664, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=6278, PETRI_PLACES=697, PETRI_TRANSITIONS=422} [2022-01-19 00:46:32,429 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 510 predicate places. [2022-01-19 00:46:32,429 INFO L470 AbstractCegarLoop]: Abstraction has has 697 places, 422 transitions, 6278 flow [2022-01-19 00:46:32,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:32,430 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:32,430 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:32,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable330 [2022-01-19 00:46:32,430 INFO L402 AbstractCegarLoop]: === Iteration 332 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:32,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:32,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1545404012, now seen corresponding path program 28 times [2022-01-19 00:46:32,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:32,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41133912] [2022-01-19 00:46:32,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:32,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:32,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:32,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:32,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41133912] [2022-01-19 00:46:32,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41133912] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:32,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:32,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:32,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020522315] [2022-01-19 00:46:32,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:32,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:32,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:32,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:32,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:32,525 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:32,526 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 697 places, 422 transitions, 6278 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:32,526 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:32,526 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:32,526 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:33,469 INFO L129 PetriNetUnfolder]: 487/1967 cut-off events. [2022-01-19 00:46:33,470 INFO L130 PetriNetUnfolder]: For 51682/51719 co-relation queries the response was YES. [2022-01-19 00:46:33,510 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15196 conditions, 1967 events. 487/1967 cut-off events. For 51682/51719 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 14163 event pairs, 171 based on Foata normal form. 11/1911 useless extension candidates. Maximal degree in co-relation 14894. Up to 508 conditions per place. [2022-01-19 00:46:33,517 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 235 selfloop transitions, 82 changer transitions 65/523 dead transitions. [2022-01-19 00:46:33,518 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 684 places, 523 transitions, 9296 flow [2022-01-19 00:46:33,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 00:46:33,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 00:46:33,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4487 transitions. [2022-01-19 00:46:33,520 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763095238095238 [2022-01-19 00:46:33,520 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4487 transitions. [2022-01-19 00:46:33,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4487 transitions. [2022-01-19 00:46:33,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:33,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4487 transitions. [2022-01-19 00:46:33,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.25) internal successors, (4487), 28 states have internal predecessors, (4487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:33,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:33,525 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:33,525 INFO L186 Difference]: Start difference. First operand has 697 places, 422 transitions, 6278 flow. Second operand 28 states and 4487 transitions. [2022-01-19 00:46:33,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 684 places, 523 transitions, 9296 flow [2022-01-19 00:46:33,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 646 places, 523 transitions, 8559 flow, removed 50 selfloop flow, removed 38 redundant places. [2022-01-19 00:46:33,865 INFO L242 Difference]: Finished difference. Result has 655 places, 397 transitions, 5322 flow [2022-01-19 00:46:33,865 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5684, PETRI_DIFFERENCE_MINUEND_PLACES=619, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=5322, PETRI_PLACES=655, PETRI_TRANSITIONS=397} [2022-01-19 00:46:33,865 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 468 predicate places. [2022-01-19 00:46:33,865 INFO L470 AbstractCegarLoop]: Abstraction has has 655 places, 397 transitions, 5322 flow [2022-01-19 00:46:33,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:33,866 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:33,866 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:33,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable331 [2022-01-19 00:46:33,866 INFO L402 AbstractCegarLoop]: === Iteration 333 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:33,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:33,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1810144978, now seen corresponding path program 29 times [2022-01-19 00:46:33,866 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:33,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815626739] [2022-01-19 00:46:33,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:33,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:33,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:33,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:33,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815626739] [2022-01-19 00:46:33,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815626739] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:33,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:33,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:33,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279594354] [2022-01-19 00:46:33,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:33,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:33,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:33,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:33,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:33,964 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:33,964 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 655 places, 397 transitions, 5322 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:33,965 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:33,965 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:33,965 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:34,855 INFO L129 PetriNetUnfolder]: 454/1836 cut-off events. [2022-01-19 00:46:34,855 INFO L130 PetriNetUnfolder]: For 43585/43619 co-relation queries the response was YES. [2022-01-19 00:46:34,892 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13677 conditions, 1836 events. 454/1836 cut-off events. For 43585/43619 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 12920 event pairs, 166 based on Foata normal form. 11/1782 useless extension candidates. Maximal degree in co-relation 13387. Up to 487 conditions per place. [2022-01-19 00:46:34,898 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 208 selfloop transitions, 57 changer transitions 68/474 dead transitions. [2022-01-19 00:46:34,898 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 651 places, 474 transitions, 7605 flow [2022-01-19 00:46:34,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:46:34,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:46:34,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4783 transitions. [2022-01-19 00:46:34,900 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7592063492063492 [2022-01-19 00:46:34,900 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4783 transitions. [2022-01-19 00:46:34,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4783 transitions. [2022-01-19 00:46:34,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:34,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4783 transitions. [2022-01-19 00:46:34,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.43333333333334) internal successors, (4783), 30 states have internal predecessors, (4783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:34,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:34,906 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:34,906 INFO L186 Difference]: Start difference. First operand has 655 places, 397 transitions, 5322 flow. Second operand 30 states and 4783 transitions. [2022-01-19 00:46:34,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 651 places, 474 transitions, 7605 flow [2022-01-19 00:46:35,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 617 places, 474 transitions, 7141 flow, removed 36 selfloop flow, removed 34 redundant places. [2022-01-19 00:46:35,176 INFO L242 Difference]: Finished difference. Result has 622 places, 346 transitions, 4005 flow [2022-01-19 00:46:35,176 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4902, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4005, PETRI_PLACES=622, PETRI_TRANSITIONS=346} [2022-01-19 00:46:35,176 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 435 predicate places. [2022-01-19 00:46:35,176 INFO L470 AbstractCegarLoop]: Abstraction has has 622 places, 346 transitions, 4005 flow [2022-01-19 00:46:35,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:35,177 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:35,177 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:35,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable332 [2022-01-19 00:46:35,177 INFO L402 AbstractCegarLoop]: === Iteration 334 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:35,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:35,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1755102784, now seen corresponding path program 30 times [2022-01-19 00:46:35,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:35,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495946725] [2022-01-19 00:46:35,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:35,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:35,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:35,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:35,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495946725] [2022-01-19 00:46:35,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495946725] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:35,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:35,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:35,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881152737] [2022-01-19 00:46:35,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:35,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:35,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:35,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:35,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:35,273 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:35,273 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 346 transitions, 4005 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:35,273 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:35,274 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:35,274 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:36,336 INFO L129 PetriNetUnfolder]: 478/1908 cut-off events. [2022-01-19 00:46:36,336 INFO L130 PetriNetUnfolder]: For 44553/44580 co-relation queries the response was YES. [2022-01-19 00:46:36,373 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14153 conditions, 1908 events. 478/1908 cut-off events. For 44553/44580 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 13539 event pairs, 182 based on Foata normal form. 5/1848 useless extension candidates. Maximal degree in co-relation 13877. Up to 487 conditions per place. [2022-01-19 00:46:36,379 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 208 selfloop transitions, 72 changer transitions 66/487 dead transitions. [2022-01-19 00:46:36,379 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 487 transitions, 7947 flow [2022-01-19 00:46:36,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:46:36,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:46:36,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6072 transitions. [2022-01-19 00:46:36,382 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7609022556390977 [2022-01-19 00:46:36,382 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6072 transitions. [2022-01-19 00:46:36,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6072 transitions. [2022-01-19 00:46:36,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:36,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6072 transitions. [2022-01-19 00:46:36,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.78947368421052) internal successors, (6072), 38 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:36,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:36,389 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:36,389 INFO L186 Difference]: Start difference. First operand has 622 places, 346 transitions, 4005 flow. Second operand 38 states and 6072 transitions. [2022-01-19 00:46:36,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 487 transitions, 7947 flow [2022-01-19 00:46:36,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 487 transitions, 7152 flow, removed 85 selfloop flow, removed 38 redundant places. [2022-01-19 00:46:36,599 INFO L242 Difference]: Finished difference. Result has 583 places, 364 transitions, 4210 flow [2022-01-19 00:46:36,599 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3527, PETRI_DIFFERENCE_MINUEND_PLACES=525, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=4210, PETRI_PLACES=583, PETRI_TRANSITIONS=364} [2022-01-19 00:46:36,599 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 396 predicate places. [2022-01-19 00:46:36,600 INFO L470 AbstractCegarLoop]: Abstraction has has 583 places, 364 transitions, 4210 flow [2022-01-19 00:46:36,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:36,600 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:36,600 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:36,600 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable333 [2022-01-19 00:46:36,600 INFO L402 AbstractCegarLoop]: === Iteration 335 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:36,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:36,600 INFO L85 PathProgramCache]: Analyzing trace with hash -853020034, now seen corresponding path program 31 times [2022-01-19 00:46:36,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:36,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280022161] [2022-01-19 00:46:36,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:36,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:36,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:36,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:36,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280022161] [2022-01-19 00:46:36,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280022161] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:36,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:36,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:36,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917488587] [2022-01-19 00:46:36,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:36,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:36,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:36,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:36,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:36,705 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:36,706 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 364 transitions, 4210 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:36,706 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:36,706 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:36,706 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:37,713 INFO L129 PetriNetUnfolder]: 506/1981 cut-off events. [2022-01-19 00:46:37,714 INFO L130 PetriNetUnfolder]: For 44801/44844 co-relation queries the response was YES. [2022-01-19 00:46:37,750 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14499 conditions, 1981 events. 506/1981 cut-off events. For 44801/44844 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 14194 event pairs, 197 based on Foata normal form. 11/1925 useless extension candidates. Maximal degree in co-relation 14227. Up to 487 conditions per place. [2022-01-19 00:46:37,757 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 214 selfloop transitions, 84 changer transitions 66/505 dead transitions. [2022-01-19 00:46:37,757 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 505 transitions, 8245 flow [2022-01-19 00:46:37,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 00:46:37,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 00:46:37,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5604 transitions. [2022-01-19 00:46:37,760 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7624489795918368 [2022-01-19 00:46:37,760 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5604 transitions. [2022-01-19 00:46:37,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5604 transitions. [2022-01-19 00:46:37,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:37,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5604 transitions. [2022-01-19 00:46:37,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.11428571428573) internal successors, (5604), 35 states have internal predecessors, (5604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:37,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:37,766 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:37,766 INFO L186 Difference]: Start difference. First operand has 583 places, 364 transitions, 4210 flow. Second operand 35 states and 5604 transitions. [2022-01-19 00:46:37,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 505 transitions, 8245 flow [2022-01-19 00:46:37,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 577 places, 505 transitions, 7576 flow, removed 291 selfloop flow, removed 16 redundant places. [2022-01-19 00:46:37,985 INFO L242 Difference]: Finished difference. Result has 603 places, 383 transitions, 4624 flow [2022-01-19 00:46:37,985 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3920, PETRI_DIFFERENCE_MINUEND_PLACES=543, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4624, PETRI_PLACES=603, PETRI_TRANSITIONS=383} [2022-01-19 00:46:37,986 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 416 predicate places. [2022-01-19 00:46:37,986 INFO L470 AbstractCegarLoop]: Abstraction has has 603 places, 383 transitions, 4624 flow [2022-01-19 00:46:37,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:37,986 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:37,986 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:37,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable334 [2022-01-19 00:46:37,986 INFO L402 AbstractCegarLoop]: === Iteration 336 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:37,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:37,986 INFO L85 PathProgramCache]: Analyzing trace with hash 418332166, now seen corresponding path program 32 times [2022-01-19 00:46:37,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:37,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612847752] [2022-01-19 00:46:37,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:37,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:38,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:38,085 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:38,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612847752] [2022-01-19 00:46:38,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612847752] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:38,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:38,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:38,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257557851] [2022-01-19 00:46:38,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:38,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:38,086 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:38,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:38,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:38,087 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:38,087 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 383 transitions, 4624 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:38,087 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:38,087 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:38,087 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:39,184 INFO L129 PetriNetUnfolder]: 530/2049 cut-off events. [2022-01-19 00:46:39,184 INFO L130 PetriNetUnfolder]: For 49287/49333 co-relation queries the response was YES. [2022-01-19 00:46:39,283 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15404 conditions, 2049 events. 530/2049 cut-off events. For 49287/49333 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 14860 event pairs, 195 based on Foata normal form. 15/1995 useless extension candidates. Maximal degree in co-relation 15120. Up to 487 conditions per place. [2022-01-19 00:46:39,289 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 227 selfloop transitions, 88 changer transitions 66/522 dead transitions. [2022-01-19 00:46:39,289 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 618 places, 522 transitions, 8727 flow [2022-01-19 00:46:39,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 00:46:39,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 00:46:39,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5918 transitions. [2022-01-19 00:46:39,292 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616473616473617 [2022-01-19 00:46:39,292 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5918 transitions. [2022-01-19 00:46:39,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5918 transitions. [2022-01-19 00:46:39,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:39,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5918 transitions. [2022-01-19 00:46:39,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 159.94594594594594) internal successors, (5918), 37 states have internal predecessors, (5918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:39,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:39,299 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:39,299 INFO L186 Difference]: Start difference. First operand has 603 places, 383 transitions, 4624 flow. Second operand 37 states and 5918 transitions. [2022-01-19 00:46:39,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 618 places, 522 transitions, 8727 flow [2022-01-19 00:46:39,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 522 transitions, 8196 flow, removed 200 selfloop flow, removed 20 redundant places. [2022-01-19 00:46:39,541 INFO L242 Difference]: Finished difference. Result has 623 places, 400 transitions, 5121 flow [2022-01-19 00:46:39,541 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4417, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=5121, PETRI_PLACES=623, PETRI_TRANSITIONS=400} [2022-01-19 00:46:39,542 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 436 predicate places. [2022-01-19 00:46:39,542 INFO L470 AbstractCegarLoop]: Abstraction has has 623 places, 400 transitions, 5121 flow [2022-01-19 00:46:39,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:39,542 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:39,542 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:39,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable335 [2022-01-19 00:46:39,542 INFO L402 AbstractCegarLoop]: === Iteration 337 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:39,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:39,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1375996336, now seen corresponding path program 33 times [2022-01-19 00:46:39,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:39,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041031591] [2022-01-19 00:46:39,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:39,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:39,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:39,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:39,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:39,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041031591] [2022-01-19 00:46:39,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041031591] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:39,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:39,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:39,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121441065] [2022-01-19 00:46:39,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:39,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:39,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:39,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:39,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:39,642 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:39,642 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 623 places, 400 transitions, 5121 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:39,642 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:39,643 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:39,643 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:40,712 INFO L129 PetriNetUnfolder]: 527/2067 cut-off events. [2022-01-19 00:46:40,713 INFO L130 PetriNetUnfolder]: For 50205/50230 co-relation queries the response was YES. [2022-01-19 00:46:40,754 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15468 conditions, 2067 events. 527/2067 cut-off events. For 50205/50230 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 15100 event pairs, 203 based on Foata normal form. 7/2006 useless extension candidates. Maximal degree in co-relation 15176. Up to 487 conditions per place. [2022-01-19 00:46:40,761 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 231 selfloop transitions, 92 changer transitions 68/532 dead transitions. [2022-01-19 00:46:40,761 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 532 transitions, 9139 flow [2022-01-19 00:46:40,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 00:46:40,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 00:46:40,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5763 transitions. [2022-01-19 00:46:40,764 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7623015873015873 [2022-01-19 00:46:40,764 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5763 transitions. [2022-01-19 00:46:40,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5763 transitions. [2022-01-19 00:46:40,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:40,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5763 transitions. [2022-01-19 00:46:40,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.08333333333334) internal successors, (5763), 36 states have internal predecessors, (5763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:40,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:40,771 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:40,771 INFO L186 Difference]: Start difference. First operand has 623 places, 400 transitions, 5121 flow. Second operand 36 states and 5763 transitions. [2022-01-19 00:46:40,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 532 transitions, 9139 flow [2022-01-19 00:46:41,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 616 places, 532 transitions, 8710 flow, removed 171 selfloop flow, removed 19 redundant places. [2022-01-19 00:46:41,066 INFO L242 Difference]: Finished difference. Result has 641 places, 410 transitions, 5525 flow [2022-01-19 00:46:41,066 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4939, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=400, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=5525, PETRI_PLACES=641, PETRI_TRANSITIONS=410} [2022-01-19 00:46:41,066 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 454 predicate places. [2022-01-19 00:46:41,066 INFO L470 AbstractCegarLoop]: Abstraction has has 641 places, 410 transitions, 5525 flow [2022-01-19 00:46:41,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:41,067 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:41,067 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:41,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable336 [2022-01-19 00:46:41,067 INFO L402 AbstractCegarLoop]: === Iteration 338 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:41,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:41,067 INFO L85 PathProgramCache]: Analyzing trace with hash -244700762, now seen corresponding path program 34 times [2022-01-19 00:46:41,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:41,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925926419] [2022-01-19 00:46:41,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:41,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:41,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:41,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:41,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925926419] [2022-01-19 00:46:41,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925926419] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:41,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:41,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:41,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133065209] [2022-01-19 00:46:41,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:41,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:41,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:41,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:41,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:41,166 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:41,166 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 641 places, 410 transitions, 5525 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:41,166 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:41,166 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:41,166 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:42,401 INFO L129 PetriNetUnfolder]: 568/2227 cut-off events. [2022-01-19 00:46:42,401 INFO L130 PetriNetUnfolder]: For 56685/56729 co-relation queries the response was YES. [2022-01-19 00:46:42,447 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16820 conditions, 2227 events. 568/2227 cut-off events. For 56685/56729 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 16774 event pairs, 198 based on Foata normal form. 9/2173 useless extension candidates. Maximal degree in co-relation 16520. Up to 489 conditions per place. [2022-01-19 00:46:42,455 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 257 selfloop transitions, 115 changer transitions 85/598 dead transitions. [2022-01-19 00:46:42,455 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 598 transitions, 10656 flow [2022-01-19 00:46:42,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 00:46:42,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 00:46:42,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7340 transitions. [2022-01-19 00:46:42,458 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7598343685300207 [2022-01-19 00:46:42,458 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7340 transitions. [2022-01-19 00:46:42,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7340 transitions. [2022-01-19 00:46:42,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:42,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7340 transitions. [2022-01-19 00:46:42,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.56521739130434) internal successors, (7340), 46 states have internal predecessors, (7340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:42,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:42,467 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:42,467 INFO L186 Difference]: Start difference. First operand has 641 places, 410 transitions, 5525 flow. Second operand 46 states and 7340 transitions. [2022-01-19 00:46:42,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 664 places, 598 transitions, 10656 flow [2022-01-19 00:46:42,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 644 places, 598 transitions, 10133 flow, removed 160 selfloop flow, removed 20 redundant places. [2022-01-19 00:46:42,797 INFO L242 Difference]: Finished difference. Result has 677 places, 436 transitions, 6115 flow [2022-01-19 00:46:42,797 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5231, PETRI_DIFFERENCE_MINUEND_PLACES=599, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=6115, PETRI_PLACES=677, PETRI_TRANSITIONS=436} [2022-01-19 00:46:42,797 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 490 predicate places. [2022-01-19 00:46:42,797 INFO L470 AbstractCegarLoop]: Abstraction has has 677 places, 436 transitions, 6115 flow [2022-01-19 00:46:42,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:42,798 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:42,798 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:42,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable337 [2022-01-19 00:46:42,798 INFO L402 AbstractCegarLoop]: === Iteration 339 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:42,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:42,798 INFO L85 PathProgramCache]: Analyzing trace with hash -971988702, now seen corresponding path program 35 times [2022-01-19 00:46:42,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:42,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415142752] [2022-01-19 00:46:42,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:42,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:42,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:42,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:42,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415142752] [2022-01-19 00:46:42,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415142752] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:42,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:42,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:42,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685958221] [2022-01-19 00:46:42,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:42,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:42,899 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:42,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:42,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:42,901 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:42,901 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 677 places, 436 transitions, 6115 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:42,901 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:42,901 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:42,901 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:44,225 INFO L129 PetriNetUnfolder]: 582/2270 cut-off events. [2022-01-19 00:46:44,225 INFO L130 PetriNetUnfolder]: For 58515/58553 co-relation queries the response was YES. [2022-01-19 00:46:44,275 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17373 conditions, 2270 events. 582/2270 cut-off events. For 58515/58553 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 17279 event pairs, 228 based on Foata normal form. 9/2207 useless extension candidates. Maximal degree in co-relation 17058. Up to 510 conditions per place. [2022-01-19 00:46:44,283 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 242 selfloop transitions, 127 changer transitions 82/592 dead transitions. [2022-01-19 00:46:44,283 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 688 places, 592 transitions, 10564 flow [2022-01-19 00:46:44,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 00:46:44,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 00:46:44,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7186 transitions. [2022-01-19 00:46:44,286 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7604232804232804 [2022-01-19 00:46:44,286 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7186 transitions. [2022-01-19 00:46:44,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7186 transitions. [2022-01-19 00:46:44,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:44,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7186 transitions. [2022-01-19 00:46:44,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.6888888888889) internal successors, (7186), 45 states have internal predecessors, (7186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:44,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:44,294 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:44,294 INFO L186 Difference]: Start difference. First operand has 677 places, 436 transitions, 6115 flow. Second operand 45 states and 7186 transitions. [2022-01-19 00:46:44,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 688 places, 592 transitions, 10564 flow [2022-01-19 00:46:44,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 660 places, 592 transitions, 10176 flow, removed 159 selfloop flow, removed 28 redundant places. [2022-01-19 00:46:44,656 INFO L242 Difference]: Finished difference. Result has 694 places, 453 transitions, 6709 flow [2022-01-19 00:46:44,656 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5934, PETRI_DIFFERENCE_MINUEND_PLACES=616, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=6709, PETRI_PLACES=694, PETRI_TRANSITIONS=453} [2022-01-19 00:46:44,656 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 507 predicate places. [2022-01-19 00:46:44,656 INFO L470 AbstractCegarLoop]: Abstraction has has 694 places, 453 transitions, 6709 flow [2022-01-19 00:46:44,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:44,657 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:44,657 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:44,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable338 [2022-01-19 00:46:44,657 INFO L402 AbstractCegarLoop]: === Iteration 340 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:44,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:44,657 INFO L85 PathProgramCache]: Analyzing trace with hash -395274568, now seen corresponding path program 36 times [2022-01-19 00:46:44,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:44,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759721259] [2022-01-19 00:46:44,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:44,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:44,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:44,754 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:44,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759721259] [2022-01-19 00:46:44,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759721259] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:44,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:44,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:44,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901689370] [2022-01-19 00:46:44,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:44,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:44,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:44,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:44,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:44,755 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:44,756 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 694 places, 453 transitions, 6709 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:44,756 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:44,756 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:44,756 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:45,997 INFO L129 PetriNetUnfolder]: 576/2217 cut-off events. [2022-01-19 00:46:45,997 INFO L130 PetriNetUnfolder]: For 61790/61828 co-relation queries the response was YES. [2022-01-19 00:46:46,046 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17432 conditions, 2217 events. 576/2217 cut-off events. For 61790/61828 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 16644 event pairs, 202 based on Foata normal form. 9/2157 useless extension candidates. Maximal degree in co-relation 17109. Up to 506 conditions per place. [2022-01-19 00:46:46,053 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 265 selfloop transitions, 121 changer transitions 94/621 dead transitions. [2022-01-19 00:46:46,053 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 705 places, 621 transitions, 11724 flow [2022-01-19 00:46:46,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 00:46:46,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 00:46:46,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7025 transitions. [2022-01-19 00:46:46,057 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7602813852813853 [2022-01-19 00:46:46,057 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7025 transitions. [2022-01-19 00:46:46,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7025 transitions. [2022-01-19 00:46:46,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:46,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7025 transitions. [2022-01-19 00:46:46,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.6590909090909) internal successors, (7025), 44 states have internal predecessors, (7025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:46,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:46,065 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:46,065 INFO L186 Difference]: Start difference. First operand has 694 places, 453 transitions, 6709 flow. Second operand 44 states and 7025 transitions. [2022-01-19 00:46:46,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 705 places, 621 transitions, 11724 flow [2022-01-19 00:46:46,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 674 places, 621 transitions, 11244 flow, removed 175 selfloop flow, removed 31 redundant places. [2022-01-19 00:46:46,468 INFO L242 Difference]: Finished difference. Result has 707 places, 461 transitions, 7109 flow [2022-01-19 00:46:46,468 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6424, PETRI_DIFFERENCE_MINUEND_PLACES=631, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=7109, PETRI_PLACES=707, PETRI_TRANSITIONS=461} [2022-01-19 00:46:46,468 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 520 predicate places. [2022-01-19 00:46:46,468 INFO L470 AbstractCegarLoop]: Abstraction has has 707 places, 461 transitions, 7109 flow [2022-01-19 00:46:46,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:46,469 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:46,469 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:46,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable339 [2022-01-19 00:46:46,469 INFO L402 AbstractCegarLoop]: === Iteration 341 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:46,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:46,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1497482432, now seen corresponding path program 37 times [2022-01-19 00:46:46,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:46,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125996194] [2022-01-19 00:46:46,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:46,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:46,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:46,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:46,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125996194] [2022-01-19 00:46:46,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125996194] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:46,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:46,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:46,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46457986] [2022-01-19 00:46:46,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:46,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:46,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:46,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:46,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:46,575 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:46,576 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 707 places, 461 transitions, 7109 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:46,576 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:46,576 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:46,576 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:47,796 INFO L129 PetriNetUnfolder]: 594/2282 cut-off events. [2022-01-19 00:46:47,797 INFO L130 PetriNetUnfolder]: For 62442/62467 co-relation queries the response was YES. [2022-01-19 00:46:47,848 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17973 conditions, 2282 events. 594/2282 cut-off events. For 62442/62467 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 17380 event pairs, 225 based on Foata normal form. 5/2212 useless extension candidates. Maximal degree in co-relation 17645. Up to 527 conditions per place. [2022-01-19 00:46:47,856 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 251 selfloop transitions, 138 changer transitions 70/600 dead transitions. [2022-01-19 00:46:47,856 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 713 places, 600 transitions, 11146 flow [2022-01-19 00:46:47,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:46:47,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:46:47,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6084 transitions. [2022-01-19 00:46:47,859 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.762406015037594 [2022-01-19 00:46:47,859 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6084 transitions. [2022-01-19 00:46:47,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6084 transitions. [2022-01-19 00:46:47,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:47,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6084 transitions. [2022-01-19 00:46:47,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.10526315789474) internal successors, (6084), 38 states have internal predecessors, (6084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:47,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:47,866 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:47,866 INFO L186 Difference]: Start difference. First operand has 707 places, 461 transitions, 7109 flow. Second operand 38 states and 6084 transitions. [2022-01-19 00:46:47,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 713 places, 600 transitions, 11146 flow [2022-01-19 00:46:48,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 677 places, 600 transitions, 10573 flow, removed 162 selfloop flow, removed 36 redundant places. [2022-01-19 00:46:48,313 INFO L242 Difference]: Finished difference. Result has 700 places, 481 transitions, 7558 flow [2022-01-19 00:46:48,313 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6693, PETRI_DIFFERENCE_MINUEND_PLACES=640, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=7558, PETRI_PLACES=700, PETRI_TRANSITIONS=481} [2022-01-19 00:46:48,313 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 513 predicate places. [2022-01-19 00:46:48,313 INFO L470 AbstractCegarLoop]: Abstraction has has 700 places, 481 transitions, 7558 flow [2022-01-19 00:46:48,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:48,314 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:48,314 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:48,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable340 [2022-01-19 00:46:48,314 INFO L402 AbstractCegarLoop]: === Iteration 342 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:48,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:48,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1649841138, now seen corresponding path program 38 times [2022-01-19 00:46:48,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:48,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560473635] [2022-01-19 00:46:48,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:48,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:48,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:48,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:48,414 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:48,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560473635] [2022-01-19 00:46:48,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560473635] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:48,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:48,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:48,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396874862] [2022-01-19 00:46:48,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:48,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:48,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:48,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:48,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:48,415 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:48,416 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 700 places, 481 transitions, 7558 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:48,416 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:48,416 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:48,416 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:49,594 INFO L129 PetriNetUnfolder]: 588/2262 cut-off events. [2022-01-19 00:46:49,595 INFO L130 PetriNetUnfolder]: For 59756/59794 co-relation queries the response was YES. [2022-01-19 00:46:49,645 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17678 conditions, 2262 events. 588/2262 cut-off events. For 59756/59794 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 17183 event pairs, 221 based on Foata normal form. 9/2197 useless extension candidates. Maximal degree in co-relation 17359. Up to 523 conditions per place. [2022-01-19 00:46:49,653 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 253 selfloop transitions, 139 changer transitions 72/605 dead transitions. [2022-01-19 00:46:49,653 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 712 places, 605 transitions, 11325 flow [2022-01-19 00:46:49,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 00:46:49,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 00:46:49,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5924 transitions. [2022-01-19 00:46:49,656 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7624195624195624 [2022-01-19 00:46:49,656 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5924 transitions. [2022-01-19 00:46:49,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5924 transitions. [2022-01-19 00:46:49,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:49,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5924 transitions. [2022-01-19 00:46:49,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.1081081081081) internal successors, (5924), 37 states have internal predecessors, (5924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:49,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:49,663 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:49,663 INFO L186 Difference]: Start difference. First operand has 700 places, 481 transitions, 7558 flow. Second operand 37 states and 5924 transitions. [2022-01-19 00:46:49,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 712 places, 605 transitions, 11325 flow [2022-01-19 00:46:50,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 693 places, 605 transitions, 10954 flow, removed 126 selfloop flow, removed 19 redundant places. [2022-01-19 00:46:50,076 INFO L242 Difference]: Finished difference. Result has 717 places, 486 transitions, 7891 flow [2022-01-19 00:46:50,076 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7328, PETRI_DIFFERENCE_MINUEND_PLACES=657, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=481, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=7891, PETRI_PLACES=717, PETRI_TRANSITIONS=486} [2022-01-19 00:46:50,077 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 530 predicate places. [2022-01-19 00:46:50,077 INFO L470 AbstractCegarLoop]: Abstraction has has 717 places, 486 transitions, 7891 flow [2022-01-19 00:46:50,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:50,077 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:50,077 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:50,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable341 [2022-01-19 00:46:50,077 INFO L402 AbstractCegarLoop]: === Iteration 343 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:50,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:50,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1647068248, now seen corresponding path program 39 times [2022-01-19 00:46:50,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:50,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767414690] [2022-01-19 00:46:50,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:50,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:50,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:50,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:50,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767414690] [2022-01-19 00:46:50,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767414690] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:50,178 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:50,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:50,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306826459] [2022-01-19 00:46:50,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:50,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:50,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:50,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:50,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:50,180 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:50,180 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 486 transitions, 7891 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:50,180 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:50,180 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:50,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:51,414 INFO L129 PetriNetUnfolder]: 584/2295 cut-off events. [2022-01-19 00:46:51,414 INFO L130 PetriNetUnfolder]: For 61157/61199 co-relation queries the response was YES. [2022-01-19 00:46:51,466 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17851 conditions, 2295 events. 584/2295 cut-off events. For 61157/61199 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 17538 event pairs, 203 based on Foata normal form. 9/2241 useless extension candidates. Maximal degree in co-relation 17524. Up to 519 conditions per place. [2022-01-19 00:46:51,475 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 275 selfloop transitions, 135 changer transitions 76/627 dead transitions. [2022-01-19 00:46:51,475 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 731 places, 627 transitions, 12222 flow [2022-01-19 00:46:51,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:46:51,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:46:51,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6078 transitions. [2022-01-19 00:46:51,477 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616541353383459 [2022-01-19 00:46:51,477 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6078 transitions. [2022-01-19 00:46:51,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6078 transitions. [2022-01-19 00:46:51,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:51,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6078 transitions. [2022-01-19 00:46:51,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.94736842105263) internal successors, (6078), 38 states have internal predecessors, (6078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:51,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:51,485 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:51,485 INFO L186 Difference]: Start difference. First operand has 717 places, 486 transitions, 7891 flow. Second operand 38 states and 6078 transitions. [2022-01-19 00:46:51,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 731 places, 627 transitions, 12222 flow [2022-01-19 00:46:51,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 709 places, 627 transitions, 11819 flow, removed 123 selfloop flow, removed 22 redundant places. [2022-01-19 00:46:51,945 INFO L242 Difference]: Finished difference. Result has 732 places, 491 transitions, 8175 flow [2022-01-19 00:46:51,945 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7630, PETRI_DIFFERENCE_MINUEND_PLACES=672, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8175, PETRI_PLACES=732, PETRI_TRANSITIONS=491} [2022-01-19 00:46:51,945 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 545 predicate places. [2022-01-19 00:46:51,945 INFO L470 AbstractCegarLoop]: Abstraction has has 732 places, 491 transitions, 8175 flow [2022-01-19 00:46:51,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:51,946 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:51,946 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:51,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable342 [2022-01-19 00:46:51,946 INFO L402 AbstractCegarLoop]: === Iteration 344 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:51,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:51,946 INFO L85 PathProgramCache]: Analyzing trace with hash -280414778, now seen corresponding path program 40 times [2022-01-19 00:46:51,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:51,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730642219] [2022-01-19 00:46:51,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:51,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:52,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:52,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:52,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730642219] [2022-01-19 00:46:52,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730642219] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:52,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:52,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:52,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201610039] [2022-01-19 00:46:52,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:52,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:52,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:52,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:52,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:52,048 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:52,048 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 732 places, 491 transitions, 8175 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:52,048 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:52,048 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:52,048 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:53,254 INFO L129 PetriNetUnfolder]: 593/2298 cut-off events. [2022-01-19 00:46:53,254 INFO L130 PetriNetUnfolder]: For 62620/62643 co-relation queries the response was YES. [2022-01-19 00:46:53,303 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18112 conditions, 2298 events. 593/2298 cut-off events. For 62620/62643 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 17516 event pairs, 219 based on Foata normal form. 5/2234 useless extension candidates. Maximal degree in co-relation 17780. Up to 532 conditions per place. [2022-01-19 00:46:53,311 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 268 selfloop transitions, 146 changer transitions 77/632 dead transitions. [2022-01-19 00:46:53,311 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 743 places, 632 transitions, 12490 flow [2022-01-19 00:46:53,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 00:46:53,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 00:46:53,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5763 transitions. [2022-01-19 00:46:53,313 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7623015873015873 [2022-01-19 00:46:53,314 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5763 transitions. [2022-01-19 00:46:53,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5763 transitions. [2022-01-19 00:46:53,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:53,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5763 transitions. [2022-01-19 00:46:53,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.08333333333334) internal successors, (5763), 36 states have internal predecessors, (5763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:53,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:53,320 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:53,320 INFO L186 Difference]: Start difference. First operand has 732 places, 491 transitions, 8175 flow. Second operand 36 states and 5763 transitions. [2022-01-19 00:46:53,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 743 places, 632 transitions, 12490 flow [2022-01-19 00:46:53,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 721 places, 632 transitions, 12136 flow, removed 110 selfloop flow, removed 22 redundant places. [2022-01-19 00:46:53,811 INFO L242 Difference]: Finished difference. Result has 744 places, 507 transitions, 8749 flow [2022-01-19 00:46:53,811 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7915, PETRI_DIFFERENCE_MINUEND_PLACES=686, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=8749, PETRI_PLACES=744, PETRI_TRANSITIONS=507} [2022-01-19 00:46:53,811 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 557 predicate places. [2022-01-19 00:46:53,811 INFO L470 AbstractCegarLoop]: Abstraction has has 744 places, 507 transitions, 8749 flow [2022-01-19 00:46:53,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:53,812 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:53,812 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:53,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable343 [2022-01-19 00:46:53,812 INFO L402 AbstractCegarLoop]: === Iteration 345 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:53,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:53,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1947638806, now seen corresponding path program 41 times [2022-01-19 00:46:53,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:53,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156075209] [2022-01-19 00:46:53,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:53,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:53,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:53,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:53,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:53,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156075209] [2022-01-19 00:46:53,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156075209] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:53,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:53,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:53,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055619143] [2022-01-19 00:46:53,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:53,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:53,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:53,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:53,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:53,923 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:53,924 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 744 places, 507 transitions, 8749 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:53,924 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:53,924 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:53,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:55,209 INFO L129 PetriNetUnfolder]: 618/2373 cut-off events. [2022-01-19 00:46:55,209 INFO L130 PetriNetUnfolder]: For 67780/67805 co-relation queries the response was YES. [2022-01-19 00:46:55,265 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19021 conditions, 2373 events. 618/2373 cut-off events. For 67780/67805 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 18336 event pairs, 219 based on Foata normal form. 5/2309 useless extension candidates. Maximal degree in co-relation 18685. Up to 545 conditions per place. [2022-01-19 00:46:55,274 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 294 selfloop transitions, 145 changer transitions 73/653 dead transitions. [2022-01-19 00:46:55,274 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 759 places, 653 transitions, 13313 flow [2022-01-19 00:46:55,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:46:55,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:46:55,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6080 transitions. [2022-01-19 00:46:55,277 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2022-01-19 00:46:55,277 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6080 transitions. [2022-01-19 00:46:55,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6080 transitions. [2022-01-19 00:46:55,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:55,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6080 transitions. [2022-01-19 00:46:55,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.0) internal successors, (6080), 38 states have internal predecessors, (6080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:55,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:55,284 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:55,284 INFO L186 Difference]: Start difference. First operand has 744 places, 507 transitions, 8749 flow. Second operand 38 states and 6080 transitions. [2022-01-19 00:46:55,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 759 places, 653 transitions, 13313 flow [2022-01-19 00:46:55,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 735 places, 653 transitions, 12776 flow, removed 135 selfloop flow, removed 24 redundant places. [2022-01-19 00:46:55,841 INFO L242 Difference]: Finished difference. Result has 758 places, 527 transitions, 9333 flow [2022-01-19 00:46:55,841 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8366, PETRI_DIFFERENCE_MINUEND_PLACES=698, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9333, PETRI_PLACES=758, PETRI_TRANSITIONS=527} [2022-01-19 00:46:55,841 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 571 predicate places. [2022-01-19 00:46:55,841 INFO L470 AbstractCegarLoop]: Abstraction has has 758 places, 527 transitions, 9333 flow [2022-01-19 00:46:55,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:55,841 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:55,842 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:55,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable344 [2022-01-19 00:46:55,842 INFO L402 AbstractCegarLoop]: === Iteration 346 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:55,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:55,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1834953644, now seen corresponding path program 42 times [2022-01-19 00:46:55,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:55,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441842003] [2022-01-19 00:46:55,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:55,842 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:55,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:55,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:55,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441842003] [2022-01-19 00:46:55,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441842003] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:55,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:55,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:55,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984664582] [2022-01-19 00:46:55,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:55,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:55,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:55,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:55,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:55,942 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:55,943 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 758 places, 527 transitions, 9333 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:55,943 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:55,943 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:55,943 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:57,197 INFO L129 PetriNetUnfolder]: 612/2362 cut-off events. [2022-01-19 00:46:57,197 INFO L130 PetriNetUnfolder]: For 66628/66651 co-relation queries the response was YES. [2022-01-19 00:46:57,253 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18910 conditions, 2362 events. 612/2362 cut-off events. For 66628/66651 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 18238 event pairs, 219 based on Foata normal form. 5/2298 useless extension candidates. Maximal degree in co-relation 18570. Up to 541 conditions per place. [2022-01-19 00:46:57,263 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 291 selfloop transitions, 143 changer transitions 72/647 dead transitions. [2022-01-19 00:46:57,263 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 770 places, 647 transitions, 13275 flow [2022-01-19 00:46:57,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 00:46:57,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 00:46:57,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5926 transitions. [2022-01-19 00:46:57,266 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7626769626769627 [2022-01-19 00:46:57,266 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5926 transitions. [2022-01-19 00:46:57,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5926 transitions. [2022-01-19 00:46:57,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:57,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5926 transitions. [2022-01-19 00:46:57,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.16216216216216) internal successors, (5926), 37 states have internal predecessors, (5926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:57,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:57,273 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:57,273 INFO L186 Difference]: Start difference. First operand has 758 places, 527 transitions, 9333 flow. Second operand 37 states and 5926 transitions. [2022-01-19 00:46:57,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 770 places, 647 transitions, 13275 flow [2022-01-19 00:46:57,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 751 places, 647 transitions, 12878 flow, removed 139 selfloop flow, removed 19 redundant places. [2022-01-19 00:46:57,818 INFO L242 Difference]: Finished difference. Result has 774 places, 530 transitions, 9590 flow [2022-01-19 00:46:57,819 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9083, PETRI_DIFFERENCE_MINUEND_PLACES=715, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9590, PETRI_PLACES=774, PETRI_TRANSITIONS=530} [2022-01-19 00:46:57,819 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 587 predicate places. [2022-01-19 00:46:57,819 INFO L470 AbstractCegarLoop]: Abstraction has has 774 places, 530 transitions, 9590 flow [2022-01-19 00:46:57,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:57,819 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:57,819 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:57,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable345 [2022-01-19 00:46:57,819 INFO L402 AbstractCegarLoop]: === Iteration 347 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:57,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:57,820 INFO L85 PathProgramCache]: Analyzing trace with hash 350111498, now seen corresponding path program 43 times [2022-01-19 00:46:57,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:57,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705315460] [2022-01-19 00:46:57,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:57,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:57,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:57,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:57,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:57,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705315460] [2022-01-19 00:46:57,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705315460] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:57,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:57,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:57,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769582195] [2022-01-19 00:46:57,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:57,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:57,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:57,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:57,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:57,921 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:57,922 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 774 places, 530 transitions, 9590 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:57,922 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:57,922 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:57,922 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:46:59,116 INFO L129 PetriNetUnfolder]: 616/2376 cut-off events. [2022-01-19 00:46:59,116 INFO L130 PetriNetUnfolder]: For 67928/67951 co-relation queries the response was YES. [2022-01-19 00:46:59,173 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19155 conditions, 2376 events. 616/2376 cut-off events. For 67928/67951 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 18383 event pairs, 224 based on Foata normal form. 5/2312 useless extension candidates. Maximal degree in co-relation 18808. Up to 555 conditions per place. [2022-01-19 00:46:59,182 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 273 selfloop transitions, 165 changer transitions 62/641 dead transitions. [2022-01-19 00:46:59,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 780 places, 641 transitions, 13200 flow [2022-01-19 00:46:59,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:46:59,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:46:59,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4816 transitions. [2022-01-19 00:46:59,184 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7644444444444445 [2022-01-19 00:46:59,184 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4816 transitions. [2022-01-19 00:46:59,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4816 transitions. [2022-01-19 00:46:59,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:46:59,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4816 transitions. [2022-01-19 00:46:59,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.53333333333333) internal successors, (4816), 30 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:59,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:59,190 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:59,190 INFO L186 Difference]: Start difference. First operand has 774 places, 530 transitions, 9590 flow. Second operand 30 states and 4816 transitions. [2022-01-19 00:46:59,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 780 places, 641 transitions, 13200 flow [2022-01-19 00:46:59,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 753 places, 641 transitions, 12742 flow, removed 113 selfloop flow, removed 27 redundant places. [2022-01-19 00:46:59,760 INFO L242 Difference]: Finished difference. Result has 766 places, 543 transitions, 9979 flow [2022-01-19 00:46:59,761 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9225, PETRI_DIFFERENCE_MINUEND_PLACES=724, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=9979, PETRI_PLACES=766, PETRI_TRANSITIONS=543} [2022-01-19 00:46:59,761 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 579 predicate places. [2022-01-19 00:46:59,761 INFO L470 AbstractCegarLoop]: Abstraction has has 766 places, 543 transitions, 9979 flow [2022-01-19 00:46:59,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:59,761 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:46:59,761 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:46:59,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable346 [2022-01-19 00:46:59,761 INFO L402 AbstractCegarLoop]: === Iteration 348 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:46:59,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:46:59,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1683532140, now seen corresponding path program 44 times [2022-01-19 00:46:59,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:46:59,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268342019] [2022-01-19 00:46:59,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:46:59,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:46:59,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:46:59,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:46:59,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:46:59,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268342019] [2022-01-19 00:46:59,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268342019] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:46:59,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:46:59,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:46:59,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256458929] [2022-01-19 00:46:59,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:46:59,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:46:59,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:46:59,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:46:59,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:46:59,858 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:46:59,859 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 766 places, 543 transitions, 9979 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:46:59,859 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:46:59,859 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:46:59,859 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:47:01,055 INFO L129 PetriNetUnfolder]: 618/2403 cut-off events. [2022-01-19 00:47:01,055 INFO L130 PetriNetUnfolder]: For 66402/66425 co-relation queries the response was YES. [2022-01-19 00:47:01,111 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19241 conditions, 2403 events. 618/2403 cut-off events. For 66402/66425 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 18694 event pairs, 232 based on Foata normal form. 5/2338 useless extension candidates. Maximal degree in co-relation 18904. Up to 560 conditions per place. [2022-01-19 00:47:01,120 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 273 selfloop transitions, 169 changer transitions 61/644 dead transitions. [2022-01-19 00:47:01,120 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 779 places, 644 transitions, 13386 flow [2022-01-19 00:47:01,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:47:01,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:47:01,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4662 transitions. [2022-01-19 00:47:01,122 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655172413793103 [2022-01-19 00:47:01,122 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4662 transitions. [2022-01-19 00:47:01,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4662 transitions. [2022-01-19 00:47:01,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:47:01,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4662 transitions. [2022-01-19 00:47:01,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.75862068965517) internal successors, (4662), 29 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:01,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:01,128 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:01,128 INFO L186 Difference]: Start difference. First operand has 766 places, 543 transitions, 9979 flow. Second operand 29 states and 4662 transitions. [2022-01-19 00:47:01,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 779 places, 644 transitions, 13386 flow [2022-01-19 00:47:01,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 767 places, 644 transitions, 13054 flow, removed 70 selfloop flow, removed 12 redundant places. [2022-01-19 00:47:01,698 INFO L242 Difference]: Finished difference. Result has 780 places, 550 transitions, 10316 flow [2022-01-19 00:47:01,698 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9710, PETRI_DIFFERENCE_MINUEND_PLACES=739, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=10316, PETRI_PLACES=780, PETRI_TRANSITIONS=550} [2022-01-19 00:47:01,698 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 593 predicate places. [2022-01-19 00:47:01,698 INFO L470 AbstractCegarLoop]: Abstraction has has 780 places, 550 transitions, 10316 flow [2022-01-19 00:47:01,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:01,699 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:47:01,699 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:47:01,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable347 [2022-01-19 00:47:01,699 INFO L402 AbstractCegarLoop]: === Iteration 349 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:47:01,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:47:01,699 INFO L85 PathProgramCache]: Analyzing trace with hash -2088876890, now seen corresponding path program 45 times [2022-01-19 00:47:01,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:47:01,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322418680] [2022-01-19 00:47:01,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:47:01,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:47:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:47:01,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:47:01,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:47:01,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322418680] [2022-01-19 00:47:01,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322418680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:47:01,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:47:01,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:47:01,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757037318] [2022-01-19 00:47:01,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:47:01,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:47:01,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:47:01,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:47:01,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:47:01,800 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:47:01,801 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 780 places, 550 transitions, 10316 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:01,801 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:47:01,801 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:47:01,801 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:47:03,004 INFO L129 PetriNetUnfolder]: 611/2390 cut-off events. [2022-01-19 00:47:03,004 INFO L130 PetriNetUnfolder]: For 68306/68344 co-relation queries the response was YES. [2022-01-19 00:47:03,061 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19187 conditions, 2390 events. 611/2390 cut-off events. For 68306/68344 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 18533 event pairs, 210 based on Foata normal form. 9/2336 useless extension candidates. Maximal degree in co-relation 18845. Up to 559 conditions per place. [2022-01-19 00:47:03,071 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 297 selfloop transitions, 158 changer transitions 65/661 dead transitions. [2022-01-19 00:47:03,071 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 795 places, 661 transitions, 13933 flow [2022-01-19 00:47:03,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:47:03,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:47:03,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4816 transitions. [2022-01-19 00:47:03,073 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7644444444444445 [2022-01-19 00:47:03,073 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4816 transitions. [2022-01-19 00:47:03,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4816 transitions. [2022-01-19 00:47:03,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:47:03,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4816 transitions. [2022-01-19 00:47:03,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.53333333333333) internal successors, (4816), 30 states have internal predecessors, (4816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:03,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:03,079 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:03,079 INFO L186 Difference]: Start difference. First operand has 780 places, 550 transitions, 10316 flow. Second operand 30 states and 4816 transitions. [2022-01-19 00:47:03,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 795 places, 661 transitions, 13933 flow [2022-01-19 00:47:03,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 781 places, 661 transitions, 13560 flow, removed 77 selfloop flow, removed 14 redundant places. [2022-01-19 00:47:03,677 INFO L242 Difference]: Finished difference. Result has 794 places, 556 transitions, 10542 flow [2022-01-19 00:47:03,677 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10003, PETRI_DIFFERENCE_MINUEND_PLACES=752, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=550, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=10542, PETRI_PLACES=794, PETRI_TRANSITIONS=556} [2022-01-19 00:47:03,678 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 607 predicate places. [2022-01-19 00:47:03,678 INFO L470 AbstractCegarLoop]: Abstraction has has 794 places, 556 transitions, 10542 flow [2022-01-19 00:47:03,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:03,678 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:47:03,678 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:47:03,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable348 [2022-01-19 00:47:03,678 INFO L402 AbstractCegarLoop]: === Iteration 350 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:47:03,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:47:03,679 INFO L85 PathProgramCache]: Analyzing trace with hash -2068456834, now seen corresponding path program 46 times [2022-01-19 00:47:03,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:47:03,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220421470] [2022-01-19 00:47:03,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:47:03,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:47:03,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:47:03,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:47:03,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:47:03,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220421470] [2022-01-19 00:47:03,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220421470] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:47:03,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:47:03,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:47:03,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58266613] [2022-01-19 00:47:03,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:47:03,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:47:03,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:47:03,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:47:03,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:47:03,811 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:47:03,812 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 794 places, 556 transitions, 10542 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:03,812 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:47:03,812 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:47:03,812 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:47:05,007 INFO L129 PetriNetUnfolder]: 603/2363 cut-off events. [2022-01-19 00:47:05,007 INFO L130 PetriNetUnfolder]: For 69987/70010 co-relation queries the response was YES. [2022-01-19 00:47:05,066 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19114 conditions, 2363 events. 603/2363 cut-off events. For 69987/70010 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 18326 event pairs, 211 based on Foata normal form. 5/2302 useless extension candidates. Maximal degree in co-relation 18768. Up to 556 conditions per place. [2022-01-19 00:47:05,076 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 310 selfloop transitions, 146 changer transitions 61/658 dead transitions. [2022-01-19 00:47:05,076 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 808 places, 658 transitions, 14020 flow [2022-01-19 00:47:05,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:47:05,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:47:05,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4822 transitions. [2022-01-19 00:47:05,078 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7653968253968254 [2022-01-19 00:47:05,078 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4822 transitions. [2022-01-19 00:47:05,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4822 transitions. [2022-01-19 00:47:05,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:47:05,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4822 transitions. [2022-01-19 00:47:05,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.73333333333332) internal successors, (4822), 30 states have internal predecessors, (4822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:05,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:05,084 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:05,084 INFO L186 Difference]: Start difference. First operand has 794 places, 556 transitions, 10542 flow. Second operand 30 states and 4822 transitions. [2022-01-19 00:47:05,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 808 places, 658 transitions, 14020 flow [2022-01-19 00:47:05,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 794 places, 658 transitions, 13700 flow, removed 93 selfloop flow, removed 14 redundant places. [2022-01-19 00:47:05,668 INFO L242 Difference]: Finished difference. Result has 808 places, 561 transitions, 10793 flow [2022-01-19 00:47:05,668 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10291, PETRI_DIFFERENCE_MINUEND_PLACES=765, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=10793, PETRI_PLACES=808, PETRI_TRANSITIONS=561} [2022-01-19 00:47:05,668 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 621 predicate places. [2022-01-19 00:47:05,668 INFO L470 AbstractCegarLoop]: Abstraction has has 808 places, 561 transitions, 10793 flow [2022-01-19 00:47:05,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:05,669 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:47:05,669 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:47:05,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable349 [2022-01-19 00:47:05,669 INFO L402 AbstractCegarLoop]: === Iteration 351 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:47:05,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:47:05,669 INFO L85 PathProgramCache]: Analyzing trace with hash 261935310, now seen corresponding path program 47 times [2022-01-19 00:47:05,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:47:05,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165679359] [2022-01-19 00:47:05,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:47:05,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:47:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:47:05,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:47:05,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:47:05,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165679359] [2022-01-19 00:47:05,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165679359] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:47:05,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:47:05,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:47:05,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076339757] [2022-01-19 00:47:05,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:47:05,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:47:05,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:47:05,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:47:05,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:47:05,782 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:47:05,783 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 808 places, 561 transitions, 10793 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:05,783 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:47:05,783 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:47:05,783 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:47:06,994 INFO L129 PetriNetUnfolder]: 612/2394 cut-off events. [2022-01-19 00:47:06,994 INFO L130 PetriNetUnfolder]: For 72087/72125 co-relation queries the response was YES. [2022-01-19 00:47:07,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19511 conditions, 2394 events. 612/2394 cut-off events. For 72087/72125 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 18549 event pairs, 217 based on Foata normal form. 9/2337 useless extension candidates. Maximal degree in co-relation 19161. Up to 561 conditions per place. [2022-01-19 00:47:07,061 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 303 selfloop transitions, 164 changer transitions 61/669 dead transitions. [2022-01-19 00:47:07,061 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 821 places, 669 transitions, 14553 flow [2022-01-19 00:47:07,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:47:07,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:47:07,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4662 transitions. [2022-01-19 00:47:07,063 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655172413793103 [2022-01-19 00:47:07,063 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4662 transitions. [2022-01-19 00:47:07,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4662 transitions. [2022-01-19 00:47:07,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:47:07,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4662 transitions. [2022-01-19 00:47:07,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.75862068965517) internal successors, (4662), 29 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:07,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:07,069 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:07,069 INFO L186 Difference]: Start difference. First operand has 808 places, 561 transitions, 10793 flow. Second operand 29 states and 4662 transitions. [2022-01-19 00:47:07,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 821 places, 669 transitions, 14553 flow [2022-01-19 00:47:07,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 807 places, 669 transitions, 14170 flow, removed 114 selfloop flow, removed 14 redundant places. [2022-01-19 00:47:07,665 INFO L242 Difference]: Finished difference. Result has 821 places, 573 transitions, 11276 flow [2022-01-19 00:47:07,666 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10507, PETRI_DIFFERENCE_MINUEND_PLACES=779, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=11276, PETRI_PLACES=821, PETRI_TRANSITIONS=573} [2022-01-19 00:47:07,666 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 634 predicate places. [2022-01-19 00:47:07,666 INFO L470 AbstractCegarLoop]: Abstraction has has 821 places, 573 transitions, 11276 flow [2022-01-19 00:47:07,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:07,666 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:47:07,666 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:47:07,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable350 [2022-01-19 00:47:07,666 INFO L402 AbstractCegarLoop]: === Iteration 352 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:47:07,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:47:07,667 INFO L85 PathProgramCache]: Analyzing trace with hash 21764622, now seen corresponding path program 48 times [2022-01-19 00:47:07,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:47:07,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260634668] [2022-01-19 00:47:07,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:47:07,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:47:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:47:07,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:47:07,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:47:07,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260634668] [2022-01-19 00:47:07,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260634668] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:47:07,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:47:07,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:47:07,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10927310] [2022-01-19 00:47:07,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:47:07,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:47:07,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:47:07,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:47:07,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:47:07,760 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:47:07,761 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 821 places, 573 transitions, 11276 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:07,761 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:47:07,761 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:47:07,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:47:08,995 INFO L129 PetriNetUnfolder]: 606/2382 cut-off events. [2022-01-19 00:47:08,995 INFO L130 PetriNetUnfolder]: For 73241/73264 co-relation queries the response was YES. [2022-01-19 00:47:09,053 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19471 conditions, 2382 events. 606/2382 cut-off events. For 73241/73264 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 18461 event pairs, 201 based on Foata normal form. 5/2324 useless extension candidates. Maximal degree in co-relation 19117. Up to 563 conditions per place. [2022-01-19 00:47:09,062 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 289 selfloop transitions, 186 changer transitions 64/680 dead transitions. [2022-01-19 00:47:09,062 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 836 places, 680 transitions, 15081 flow [2022-01-19 00:47:09,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:47:09,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:47:09,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4812 transitions. [2022-01-19 00:47:09,065 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7638095238095238 [2022-01-19 00:47:09,065 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4812 transitions. [2022-01-19 00:47:09,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4812 transitions. [2022-01-19 00:47:09,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:47:09,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4812 transitions. [2022-01-19 00:47:09,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.4) internal successors, (4812), 30 states have internal predecessors, (4812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:09,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:09,070 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:09,071 INFO L186 Difference]: Start difference. First operand has 821 places, 573 transitions, 11276 flow. Second operand 30 states and 4812 transitions. [2022-01-19 00:47:09,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 836 places, 680 transitions, 15081 flow [2022-01-19 00:47:09,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 823 places, 680 transitions, 14757 flow, removed 72 selfloop flow, removed 13 redundant places. [2022-01-19 00:47:09,697 INFO L242 Difference]: Finished difference. Result has 836 places, 578 transitions, 11603 flow [2022-01-19 00:47:09,698 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10991, PETRI_DIFFERENCE_MINUEND_PLACES=794, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=11603, PETRI_PLACES=836, PETRI_TRANSITIONS=578} [2022-01-19 00:47:09,698 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 649 predicate places. [2022-01-19 00:47:09,698 INFO L470 AbstractCegarLoop]: Abstraction has has 836 places, 578 transitions, 11603 flow [2022-01-19 00:47:09,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:09,698 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:47:09,698 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:47:09,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable351 [2022-01-19 00:47:09,698 INFO L402 AbstractCegarLoop]: === Iteration 353 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:47:09,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:47:09,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1752617230, now seen corresponding path program 49 times [2022-01-19 00:47:09,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:47:09,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231996280] [2022-01-19 00:47:09,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:47:09,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:47:09,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:47:09,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:47:09,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:47:09,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231996280] [2022-01-19 00:47:09,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231996280] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:47:09,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:47:09,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:47:09,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801763640] [2022-01-19 00:47:09,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:47:09,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:47:09,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:47:09,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:47:09,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:47:09,802 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:47:09,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 836 places, 578 transitions, 11603 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:09,802 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:47:09,802 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:47:09,802 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:47:11,036 INFO L129 PetriNetUnfolder]: 607/2377 cut-off events. [2022-01-19 00:47:11,036 INFO L130 PetriNetUnfolder]: For 74030/74068 co-relation queries the response was YES. [2022-01-19 00:47:11,095 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19600 conditions, 2377 events. 607/2377 cut-off events. For 74030/74068 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 18426 event pairs, 210 based on Foata normal form. 9/2319 useless extension candidates. Maximal degree in co-relation 19241. Up to 563 conditions per place. [2022-01-19 00:47:11,104 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 321 selfloop transitions, 159 changer transitions 60/681 dead transitions. [2022-01-19 00:47:11,105 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 849 places, 681 transitions, 15323 flow [2022-01-19 00:47:11,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:47:11,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:47:11,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4662 transitions. [2022-01-19 00:47:11,107 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655172413793103 [2022-01-19 00:47:11,107 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4662 transitions. [2022-01-19 00:47:11,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4662 transitions. [2022-01-19 00:47:11,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:47:11,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4662 transitions. [2022-01-19 00:47:11,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.75862068965517) internal successors, (4662), 29 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:11,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:11,113 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:11,113 INFO L186 Difference]: Start difference. First operand has 836 places, 578 transitions, 11603 flow. Second operand 29 states and 4662 transitions. [2022-01-19 00:47:11,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 849 places, 681 transitions, 15323 flow [2022-01-19 00:47:11,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 835 places, 681 transitions, 14944 flow, removed 74 selfloop flow, removed 14 redundant places. [2022-01-19 00:47:11,790 INFO L242 Difference]: Finished difference. Result has 848 places, 589 transitions, 11998 flow [2022-01-19 00:47:11,790 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11266, PETRI_DIFFERENCE_MINUEND_PLACES=807, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=425, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=11998, PETRI_PLACES=848, PETRI_TRANSITIONS=589} [2022-01-19 00:47:11,790 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 661 predicate places. [2022-01-19 00:47:11,790 INFO L470 AbstractCegarLoop]: Abstraction has has 848 places, 589 transitions, 11998 flow [2022-01-19 00:47:11,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:11,791 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:47:11,791 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:47:11,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable352 [2022-01-19 00:47:11,791 INFO L402 AbstractCegarLoop]: === Iteration 354 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:47:11,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:47:11,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1449907186, now seen corresponding path program 50 times [2022-01-19 00:47:11,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:47:11,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87743030] [2022-01-19 00:47:11,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:47:11,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:47:11,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:47:11,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:47:11,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:47:11,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87743030] [2022-01-19 00:47:11,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87743030] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:47:11,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:47:11,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:47:11,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950199406] [2022-01-19 00:47:11,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:47:11,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:47:11,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:47:11,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:47:11,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:47:11,896 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:47:11,897 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 848 places, 589 transitions, 11998 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:11,897 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:47:11,897 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:47:11,897 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:47:13,088 INFO L129 PetriNetUnfolder]: 590/2324 cut-off events. [2022-01-19 00:47:13,088 INFO L130 PetriNetUnfolder]: For 72954/72990 co-relation queries the response was YES. [2022-01-19 00:47:13,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19048 conditions, 2324 events. 590/2324 cut-off events. For 72954/72990 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 17879 event pairs, 210 based on Foata normal form. 9/2266 useless extension candidates. Maximal degree in co-relation 18686. Up to 556 conditions per place. [2022-01-19 00:47:13,157 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 318 selfloop transitions, 140 changer transitions 66/665 dead transitions. [2022-01-19 00:47:13,157 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 863 places, 665 transitions, 14766 flow [2022-01-19 00:47:13,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:47:13,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:47:13,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4813 transitions. [2022-01-19 00:47:13,160 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763968253968254 [2022-01-19 00:47:13,160 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4813 transitions. [2022-01-19 00:47:13,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4813 transitions. [2022-01-19 00:47:13,160 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:47:13,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4813 transitions. [2022-01-19 00:47:13,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:13,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:13,165 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:13,165 INFO L186 Difference]: Start difference. First operand has 848 places, 589 transitions, 11998 flow. Second operand 30 states and 4813 transitions. [2022-01-19 00:47:13,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 863 places, 665 transitions, 14766 flow [2022-01-19 00:47:13,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 849 places, 665 transitions, 14369 flow, removed 67 selfloop flow, removed 14 redundant places. [2022-01-19 00:47:13,819 INFO L242 Difference]: Finished difference. Result has 858 places, 567 transitions, 11264 flow [2022-01-19 00:47:13,819 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11631, PETRI_DIFFERENCE_MINUEND_PLACES=820, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=11264, PETRI_PLACES=858, PETRI_TRANSITIONS=567} [2022-01-19 00:47:13,819 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 671 predicate places. [2022-01-19 00:47:13,819 INFO L470 AbstractCegarLoop]: Abstraction has has 858 places, 567 transitions, 11264 flow [2022-01-19 00:47:13,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:13,820 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:47:13,820 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:47:13,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable353 [2022-01-19 00:47:13,820 INFO L402 AbstractCegarLoop]: === Iteration 355 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:47:13,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:47:13,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1046518696, now seen corresponding path program 51 times [2022-01-19 00:47:13,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:47:13,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273828695] [2022-01-19 00:47:13,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:47:13,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:47:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:47:13,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:47:13,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:47:13,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273828695] [2022-01-19 00:47:13,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273828695] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:47:13,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:47:13,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:47:13,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270487443] [2022-01-19 00:47:13,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:47:13,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:47:13,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:47:13,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:47:13,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:47:13,918 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:47:13,918 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 858 places, 567 transitions, 11264 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:13,918 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:47:13,918 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:47:13,918 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:47:15,140 INFO L129 PetriNetUnfolder]: 597/2351 cut-off events. [2022-01-19 00:47:15,141 INFO L130 PetriNetUnfolder]: For 73839/73877 co-relation queries the response was YES. [2022-01-19 00:47:15,200 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19277 conditions, 2351 events. 597/2351 cut-off events. For 73839/73877 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 18186 event pairs, 201 based on Foata normal form. 9/2295 useless extension candidates. Maximal degree in co-relation 18915. Up to 559 conditions per place. [2022-01-19 00:47:15,209 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 328 selfloop transitions, 146 changer transitions 60/675 dead transitions. [2022-01-19 00:47:15,209 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 860 places, 675 transitions, 15121 flow [2022-01-19 00:47:15,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:47:15,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:47:15,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4822 transitions. [2022-01-19 00:47:15,211 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7653968253968254 [2022-01-19 00:47:15,211 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4822 transitions. [2022-01-19 00:47:15,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4822 transitions. [2022-01-19 00:47:15,212 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:47:15,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4822 transitions. [2022-01-19 00:47:15,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.73333333333332) internal successors, (4822), 30 states have internal predecessors, (4822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:15,216 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:15,217 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:15,217 INFO L186 Difference]: Start difference. First operand has 858 places, 567 transitions, 11264 flow. Second operand 30 states and 4822 transitions. [2022-01-19 00:47:15,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 860 places, 675 transitions, 15121 flow [2022-01-19 00:47:15,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 829 places, 675 transitions, 14564 flow, removed 45 selfloop flow, removed 31 redundant places. [2022-01-19 00:47:15,852 INFO L242 Difference]: Finished difference. Result has 842 places, 580 transitions, 11571 flow [2022-01-19 00:47:15,852 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10801, PETRI_DIFFERENCE_MINUEND_PLACES=800, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=11571, PETRI_PLACES=842, PETRI_TRANSITIONS=580} [2022-01-19 00:47:15,852 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 655 predicate places. [2022-01-19 00:47:15,852 INFO L470 AbstractCegarLoop]: Abstraction has has 842 places, 580 transitions, 11571 flow [2022-01-19 00:47:15,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:15,853 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:47:15,853 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:47:15,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable354 [2022-01-19 00:47:15,853 INFO L402 AbstractCegarLoop]: === Iteration 356 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:47:15,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:47:15,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1306770478, now seen corresponding path program 52 times [2022-01-19 00:47:15,853 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:47:15,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223894141] [2022-01-19 00:47:15,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:47:15,853 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:47:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:47:15,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:47:15,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:47:15,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223894141] [2022-01-19 00:47:15,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223894141] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:47:15,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:47:15,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:47:15,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975959948] [2022-01-19 00:47:15,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:47:15,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:47:15,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:47:15,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:47:15,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:47:15,960 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:47:15,961 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 842 places, 580 transitions, 11571 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:15,961 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:47:15,961 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:47:15,961 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:47:17,159 INFO L129 PetriNetUnfolder]: 591/2332 cut-off events. [2022-01-19 00:47:17,159 INFO L130 PetriNetUnfolder]: For 73750/73788 co-relation queries the response was YES. [2022-01-19 00:47:17,216 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19133 conditions, 2332 events. 591/2332 cut-off events. For 73750/73788 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 17962 event pairs, 201 based on Foata normal form. 9/2276 useless extension candidates. Maximal degree in co-relation 18777. Up to 557 conditions per place. [2022-01-19 00:47:17,225 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 331 selfloop transitions, 147 changer transitions 62/681 dead transitions. [2022-01-19 00:47:17,225 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 855 places, 681 transitions, 15229 flow [2022-01-19 00:47:17,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:47:17,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:47:17,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4664 transitions. [2022-01-19 00:47:17,227 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658456486042693 [2022-01-19 00:47:17,227 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4664 transitions. [2022-01-19 00:47:17,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4664 transitions. [2022-01-19 00:47:17,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:47:17,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4664 transitions. [2022-01-19 00:47:17,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.82758620689654) internal successors, (4664), 29 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:17,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:17,233 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:17,233 INFO L186 Difference]: Start difference. First operand has 842 places, 580 transitions, 11571 flow. Second operand 29 states and 4664 transitions. [2022-01-19 00:47:17,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 855 places, 681 transitions, 15229 flow [2022-01-19 00:47:17,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 843 places, 681 transitions, 14882 flow, removed 96 selfloop flow, removed 12 redundant places. [2022-01-19 00:47:17,873 INFO L242 Difference]: Finished difference. Result has 857 places, 584 transitions, 11783 flow [2022-01-19 00:47:17,874 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11301, PETRI_DIFFERENCE_MINUEND_PLACES=815, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=580, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=11783, PETRI_PLACES=857, PETRI_TRANSITIONS=584} [2022-01-19 00:47:17,874 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 670 predicate places. [2022-01-19 00:47:17,874 INFO L470 AbstractCegarLoop]: Abstraction has has 857 places, 584 transitions, 11783 flow [2022-01-19 00:47:17,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:17,874 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:47:17,874 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:47:17,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable355 [2022-01-19 00:47:17,875 INFO L402 AbstractCegarLoop]: === Iteration 357 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:47:17,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:47:17,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1866181866, now seen corresponding path program 53 times [2022-01-19 00:47:17,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:47:17,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683933790] [2022-01-19 00:47:17,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:47:17,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:47:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:47:17,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:47:17,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:47:17,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683933790] [2022-01-19 00:47:17,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683933790] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:47:17,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:47:17,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:47:17,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651935651] [2022-01-19 00:47:17,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:47:17,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:47:17,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:47:17,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:47:17,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:47:17,990 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:47:17,991 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 857 places, 584 transitions, 11783 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:17,991 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:47:17,991 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:47:17,991 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:47:19,258 INFO L129 PetriNetUnfolder]: 590/2337 cut-off events. [2022-01-19 00:47:19,258 INFO L130 PetriNetUnfolder]: For 74148/74186 co-relation queries the response was YES. [2022-01-19 00:47:19,303 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19237 conditions, 2337 events. 590/2337 cut-off events. For 74148/74186 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 18021 event pairs, 202 based on Foata normal form. 9/2282 useless extension candidates. Maximal degree in co-relation 18875. Up to 559 conditions per place. [2022-01-19 00:47:19,311 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 328 selfloop transitions, 154 changer transitions 63/686 dead transitions. [2022-01-19 00:47:19,311 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 870 places, 686 transitions, 15561 flow [2022-01-19 00:47:19,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 00:47:19,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 00:47:19,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4503 transitions. [2022-01-19 00:47:19,313 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658163265306123 [2022-01-19 00:47:19,313 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4503 transitions. [2022-01-19 00:47:19,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4503 transitions. [2022-01-19 00:47:19,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:47:19,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4503 transitions. [2022-01-19 00:47:19,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.82142857142858) internal successors, (4503), 28 states have internal predecessors, (4503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:19,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:19,319 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:19,319 INFO L186 Difference]: Start difference. First operand has 857 places, 584 transitions, 11783 flow. Second operand 28 states and 4503 transitions. [2022-01-19 00:47:19,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 870 places, 686 transitions, 15561 flow [2022-01-19 00:47:20,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 856 places, 686 transitions, 15185 flow, removed 92 selfloop flow, removed 14 redundant places. [2022-01-19 00:47:20,020 INFO L242 Difference]: Finished difference. Result has 868 places, 592 transitions, 12084 flow [2022-01-19 00:47:20,020 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11481, PETRI_DIFFERENCE_MINUEND_PLACES=829, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=12084, PETRI_PLACES=868, PETRI_TRANSITIONS=592} [2022-01-19 00:47:20,021 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 681 predicate places. [2022-01-19 00:47:20,021 INFO L470 AbstractCegarLoop]: Abstraction has has 868 places, 592 transitions, 12084 flow [2022-01-19 00:47:20,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:20,021 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:47:20,021 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:47:20,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable356 [2022-01-19 00:47:20,021 INFO L402 AbstractCegarLoop]: === Iteration 358 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:47:20,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:47:20,021 INFO L85 PathProgramCache]: Analyzing trace with hash 219871220, now seen corresponding path program 54 times [2022-01-19 00:47:20,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:47:20,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233907131] [2022-01-19 00:47:20,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:47:20,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:47:20,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:47:20,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:47:20,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:47:20,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233907131] [2022-01-19 00:47:20,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233907131] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:47:20,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:47:20,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:47:20,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463985251] [2022-01-19 00:47:20,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:47:20,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:47:20,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:47:20,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:47:20,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:47:20,117 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:47:20,118 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 868 places, 592 transitions, 12084 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:20,118 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:47:20,118 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:47:20,118 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:47:21,316 INFO L129 PetriNetUnfolder]: 565/2268 cut-off events. [2022-01-19 00:47:21,316 INFO L130 PetriNetUnfolder]: For 70636/70674 co-relation queries the response was YES. [2022-01-19 00:47:21,373 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18412 conditions, 2268 events. 565/2268 cut-off events. For 70636/70674 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 17348 event pairs, 193 based on Foata normal form. 9/2214 useless extension candidates. Maximal degree in co-relation 18047. Up to 546 conditions per place. [2022-01-19 00:47:21,381 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 321 selfloop transitions, 131 changer transitions 69/662 dead transitions. [2022-01-19 00:47:21,381 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 884 places, 662 transitions, 14706 flow [2022-01-19 00:47:21,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:47:21,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:47:21,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4809 transitions. [2022-01-19 00:47:21,384 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7633333333333333 [2022-01-19 00:47:21,384 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4809 transitions. [2022-01-19 00:47:21,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4809 transitions. [2022-01-19 00:47:21,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:47:21,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4809 transitions. [2022-01-19 00:47:21,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.3) internal successors, (4809), 30 states have internal predecessors, (4809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:21,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:21,389 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:21,389 INFO L186 Difference]: Start difference. First operand has 868 places, 592 transitions, 12084 flow. Second operand 30 states and 4809 transitions. [2022-01-19 00:47:21,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 884 places, 662 transitions, 14706 flow [2022-01-19 00:47:22,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 869 places, 662 transitions, 14293 flow, removed 63 selfloop flow, removed 15 redundant places. [2022-01-19 00:47:22,032 INFO L242 Difference]: Finished difference. Result has 878 places, 562 transitions, 11060 flow [2022-01-19 00:47:22,032 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11699, PETRI_DIFFERENCE_MINUEND_PLACES=840, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=592, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=11060, PETRI_PLACES=878, PETRI_TRANSITIONS=562} [2022-01-19 00:47:22,033 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 691 predicate places. [2022-01-19 00:47:22,033 INFO L470 AbstractCegarLoop]: Abstraction has has 878 places, 562 transitions, 11060 flow [2022-01-19 00:47:22,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:22,033 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:47:22,033 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:47:22,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable357 [2022-01-19 00:47:22,033 INFO L402 AbstractCegarLoop]: === Iteration 359 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:47:22,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:47:22,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1696012714, now seen corresponding path program 55 times [2022-01-19 00:47:22,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:47:22,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953539354] [2022-01-19 00:47:22,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:47:22,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:47:22,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:47:22,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:47:22,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:47:22,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953539354] [2022-01-19 00:47:22,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953539354] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:47:22,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:47:22,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:47:22,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689663395] [2022-01-19 00:47:22,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:47:22,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:47:22,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:47:22,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:47:22,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:47:22,128 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:47:22,128 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 878 places, 562 transitions, 11060 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:22,128 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:47:22,129 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:47:22,129 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:47:23,264 INFO L129 PetriNetUnfolder]: 541/2203 cut-off events. [2022-01-19 00:47:23,264 INFO L130 PetriNetUnfolder]: For 68870/68893 co-relation queries the response was YES. [2022-01-19 00:47:23,320 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17514 conditions, 2203 events. 541/2203 cut-off events. For 68870/68893 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 16647 event pairs, 185 based on Foata normal form. 5/2146 useless extension candidates. Maximal degree in co-relation 17149. Up to 540 conditions per place. [2022-01-19 00:47:23,329 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 268 selfloop transitions, 152 changer transitions 66/627 dead transitions. [2022-01-19 00:47:23,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 870 places, 627 transitions, 13488 flow [2022-01-19 00:47:23,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 00:47:23,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 00:47:23,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4492 transitions. [2022-01-19 00:47:23,331 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7639455782312925 [2022-01-19 00:47:23,331 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4492 transitions. [2022-01-19 00:47:23,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4492 transitions. [2022-01-19 00:47:23,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:47:23,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4492 transitions. [2022-01-19 00:47:23,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.42857142857142) internal successors, (4492), 28 states have internal predecessors, (4492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:23,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:23,336 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:23,337 INFO L186 Difference]: Start difference. First operand has 878 places, 562 transitions, 11060 flow. Second operand 28 states and 4492 transitions. [2022-01-19 00:47:23,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 870 places, 627 transitions, 13488 flow [2022-01-19 00:47:23,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 836 places, 627 transitions, 12862 flow, removed 40 selfloop flow, removed 34 redundant places. [2022-01-19 00:47:23,928 INFO L242 Difference]: Finished difference. Result has 843 places, 530 transitions, 9853 flow [2022-01-19 00:47:23,928 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10498, PETRI_DIFFERENCE_MINUEND_PLACES=809, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=562, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=9853, PETRI_PLACES=843, PETRI_TRANSITIONS=530} [2022-01-19 00:47:23,928 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 656 predicate places. [2022-01-19 00:47:23,929 INFO L470 AbstractCegarLoop]: Abstraction has has 843 places, 530 transitions, 9853 flow [2022-01-19 00:47:23,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:23,929 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:47:23,929 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:47:23,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable358 [2022-01-19 00:47:23,929 INFO L402 AbstractCegarLoop]: === Iteration 360 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:47:23,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:47:23,929 INFO L85 PathProgramCache]: Analyzing trace with hash -361020288, now seen corresponding path program 56 times [2022-01-19 00:47:23,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:47:23,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239055574] [2022-01-19 00:47:23,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:47:23,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:47:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:47:24,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:47:24,026 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:47:24,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239055574] [2022-01-19 00:47:24,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239055574] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:47:24,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:47:24,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:47:24,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545482219] [2022-01-19 00:47:24,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:47:24,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:47:24,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:47:24,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:47:24,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:47:24,028 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:47:24,028 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 843 places, 530 transitions, 9853 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:24,029 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:47:24,029 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:47:24,029 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:47:25,119 INFO L129 PetriNetUnfolder]: 521/2132 cut-off events. [2022-01-19 00:47:25,119 INFO L130 PetriNetUnfolder]: For 61621/61659 co-relation queries the response was YES. [2022-01-19 00:47:25,169 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16553 conditions, 2132 events. 521/2132 cut-off events. For 61621/61659 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 15908 event pairs, 186 based on Foata normal form. 9/2078 useless extension candidates. Maximal degree in co-relation 16202. Up to 529 conditions per place. [2022-01-19 00:47:25,177 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 294 selfloop transitions, 102 changer transitions 63/600 dead transitions. [2022-01-19 00:47:25,177 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 837 places, 600 transitions, 12387 flow [2022-01-19 00:47:25,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 00:47:25,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 00:47:25,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4495 transitions. [2022-01-19 00:47:25,180 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7644557823129252 [2022-01-19 00:47:25,180 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4495 transitions. [2022-01-19 00:47:25,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4495 transitions. [2022-01-19 00:47:25,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:47:25,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4495 transitions. [2022-01-19 00:47:25,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.53571428571428) internal successors, (4495), 28 states have internal predecessors, (4495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:25,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:25,185 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:25,185 INFO L186 Difference]: Start difference. First operand has 843 places, 530 transitions, 9853 flow. Second operand 28 states and 4495 transitions. [2022-01-19 00:47:25,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 837 places, 600 transitions, 12387 flow [2022-01-19 00:47:25,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 796 places, 600 transitions, 11507 flow, removed 44 selfloop flow, removed 41 redundant places. [2022-01-19 00:47:25,699 INFO L242 Difference]: Finished difference. Result has 805 places, 505 transitions, 8652 flow [2022-01-19 00:47:25,699 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9064, PETRI_DIFFERENCE_MINUEND_PLACES=769, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=530, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=428, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=8652, PETRI_PLACES=805, PETRI_TRANSITIONS=505} [2022-01-19 00:47:25,699 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 618 predicate places. [2022-01-19 00:47:25,700 INFO L470 AbstractCegarLoop]: Abstraction has has 805 places, 505 transitions, 8652 flow [2022-01-19 00:47:25,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:25,700 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:47:25,700 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:47:25,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable359 [2022-01-19 00:47:25,700 INFO L402 AbstractCegarLoop]: === Iteration 361 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:47:25,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:47:25,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1924282002, now seen corresponding path program 57 times [2022-01-19 00:47:25,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:47:25,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304246543] [2022-01-19 00:47:25,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:47:25,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:47:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:47:25,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:47:25,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:47:25,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304246543] [2022-01-19 00:47:25,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304246543] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:47:25,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:47:25,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:47:25,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709054962] [2022-01-19 00:47:25,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:47:25,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:47:25,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:47:25,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:47:25,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:47:25,816 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:47:25,816 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 805 places, 505 transitions, 8652 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:25,816 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:47:25,816 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:47:25,816 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:47:26,820 INFO L129 PetriNetUnfolder]: 495/2050 cut-off events. [2022-01-19 00:47:26,820 INFO L130 PetriNetUnfolder]: For 55364/55387 co-relation queries the response was YES. [2022-01-19 00:47:26,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15421 conditions, 2050 events. 495/2050 cut-off events. For 55364/55387 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 15087 event pairs, 177 based on Foata normal form. 5/1995 useless extension candidates. Maximal degree in co-relation 15085. Up to 514 conditions per place. [2022-01-19 00:47:26,874 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 261 selfloop transitions, 97 changer transitions 67/566 dead transitions. [2022-01-19 00:47:26,874 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 798 places, 566 transitions, 10802 flow [2022-01-19 00:47:26,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 00:47:26,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 00:47:26,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4330 transitions. [2022-01-19 00:47:26,876 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763668430335097 [2022-01-19 00:47:26,876 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4330 transitions. [2022-01-19 00:47:26,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4330 transitions. [2022-01-19 00:47:26,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:47:26,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4330 transitions. [2022-01-19 00:47:26,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.37037037037038) internal successors, (4330), 27 states have internal predecessors, (4330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:26,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:26,881 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:26,881 INFO L186 Difference]: Start difference. First operand has 805 places, 505 transitions, 8652 flow. Second operand 27 states and 4330 transitions. [2022-01-19 00:47:26,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 798 places, 566 transitions, 10802 flow [2022-01-19 00:47:27,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 766 places, 566 transitions, 10251 flow, removed 32 selfloop flow, removed 32 redundant places. [2022-01-19 00:47:27,307 INFO L242 Difference]: Finished difference. Result has 773 places, 468 transitions, 7462 flow [2022-01-19 00:47:27,307 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8161, PETRI_DIFFERENCE_MINUEND_PLACES=740, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=408, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=7462, PETRI_PLACES=773, PETRI_TRANSITIONS=468} [2022-01-19 00:47:27,307 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 586 predicate places. [2022-01-19 00:47:27,307 INFO L470 AbstractCegarLoop]: Abstraction has has 773 places, 468 transitions, 7462 flow [2022-01-19 00:47:27,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:27,307 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:47:27,307 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:47:27,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable360 [2022-01-19 00:47:27,308 INFO L402 AbstractCegarLoop]: === Iteration 362 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:47:27,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:47:27,308 INFO L85 PathProgramCache]: Analyzing trace with hash 433843228, now seen corresponding path program 58 times [2022-01-19 00:47:27,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:47:27,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089826554] [2022-01-19 00:47:27,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:47:27,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:47:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:47:27,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:47:27,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:47:27,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089826554] [2022-01-19 00:47:27,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089826554] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:47:27,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:47:27,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:47:27,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692167974] [2022-01-19 00:47:27,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:47:27,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:47:27,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:47:27,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:47:27,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:47:27,408 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:47:27,408 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 773 places, 468 transitions, 7462 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:27,408 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:47:27,408 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:47:27,408 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:47:28,405 INFO L129 PetriNetUnfolder]: 487/2031 cut-off events. [2022-01-19 00:47:28,406 INFO L130 PetriNetUnfolder]: For 51450/51473 co-relation queries the response was YES. [2022-01-19 00:47:28,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14989 conditions, 2031 events. 487/2031 cut-off events. For 51450/51473 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 14900 event pairs, 183 based on Foata normal form. 5/1977 useless extension candidates. Maximal degree in co-relation 14663. Up to 509 conditions per place. [2022-01-19 00:47:28,459 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 249 selfloop transitions, 96 changer transitions 63/549 dead transitions. [2022-01-19 00:47:28,459 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 761 places, 549 transitions, 10088 flow [2022-01-19 00:47:28,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:47:28,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:47:28,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4649 transitions. [2022-01-19 00:47:28,461 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7633825944170771 [2022-01-19 00:47:28,461 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4649 transitions. [2022-01-19 00:47:28,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4649 transitions. [2022-01-19 00:47:28,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:47:28,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4649 transitions. [2022-01-19 00:47:28,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.31034482758622) internal successors, (4649), 29 states have internal predecessors, (4649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:28,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:28,467 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:28,467 INFO L186 Difference]: Start difference. First operand has 773 places, 468 transitions, 7462 flow. Second operand 29 states and 4649 transitions. [2022-01-19 00:47:28,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 761 places, 549 transitions, 10088 flow [2022-01-19 00:47:28,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 725 places, 549 transitions, 9301 flow, removed 32 selfloop flow, removed 36 redundant places. [2022-01-19 00:47:28,848 INFO L242 Difference]: Finished difference. Result has 736 places, 455 transitions, 6740 flow [2022-01-19 00:47:28,849 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6817, PETRI_DIFFERENCE_MINUEND_PLACES=697, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6740, PETRI_PLACES=736, PETRI_TRANSITIONS=455} [2022-01-19 00:47:28,849 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 549 predicate places. [2022-01-19 00:47:28,849 INFO L470 AbstractCegarLoop]: Abstraction has has 736 places, 455 transitions, 6740 flow [2022-01-19 00:47:28,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:28,849 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:47:28,849 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:47:28,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable361 [2022-01-19 00:47:28,849 INFO L402 AbstractCegarLoop]: === Iteration 363 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:47:28,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:47:28,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1437060252, now seen corresponding path program 59 times [2022-01-19 00:47:28,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:47:28,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291558120] [2022-01-19 00:47:28,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:47:28,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:47:28,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:47:28,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:47:28,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:47:28,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291558120] [2022-01-19 00:47:28,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291558120] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:47:28,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:47:28,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:47:28,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949484753] [2022-01-19 00:47:28,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:47:28,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:47:28,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:47:28,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:47:28,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:47:28,947 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:47:28,948 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 736 places, 455 transitions, 6740 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:28,948 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:47:28,948 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:47:28,948 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:47:29,926 INFO L129 PetriNetUnfolder]: 477/2004 cut-off events. [2022-01-19 00:47:29,926 INFO L130 PetriNetUnfolder]: For 46345/46368 co-relation queries the response was YES. [2022-01-19 00:47:29,971 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14295 conditions, 2004 events. 477/2004 cut-off events. For 46345/46368 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 14691 event pairs, 178 based on Foata normal form. 5/1949 useless extension candidates. Maximal degree in co-relation 13977. Up to 504 conditions per place. [2022-01-19 00:47:29,978 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 243 selfloop transitions, 89 changer transitions 62/535 dead transitions. [2022-01-19 00:47:29,978 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 739 places, 535 transitions, 9239 flow [2022-01-19 00:47:29,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:47:29,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:47:29,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4810 transitions. [2022-01-19 00:47:29,980 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7634920634920634 [2022-01-19 00:47:29,980 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4810 transitions. [2022-01-19 00:47:29,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4810 transitions. [2022-01-19 00:47:29,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:47:29,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4810 transitions. [2022-01-19 00:47:29,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.33333333333334) internal successors, (4810), 30 states have internal predecessors, (4810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:29,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:29,986 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:29,986 INFO L186 Difference]: Start difference. First operand has 736 places, 455 transitions, 6740 flow. Second operand 30 states and 4810 transitions. [2022-01-19 00:47:29,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 739 places, 535 transitions, 9239 flow [2022-01-19 00:47:30,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 710 places, 535 transitions, 8846 flow, removed 27 selfloop flow, removed 29 redundant places. [2022-01-19 00:47:30,326 INFO L242 Difference]: Finished difference. Result has 722 places, 442 transitions, 6348 flow [2022-01-19 00:47:30,326 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6422, PETRI_DIFFERENCE_MINUEND_PLACES=681, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=6348, PETRI_PLACES=722, PETRI_TRANSITIONS=442} [2022-01-19 00:47:30,327 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 535 predicate places. [2022-01-19 00:47:30,327 INFO L470 AbstractCegarLoop]: Abstraction has has 722 places, 442 transitions, 6348 flow [2022-01-19 00:47:30,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:30,327 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:47:30,327 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:47:30,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable362 [2022-01-19 00:47:30,327 INFO L402 AbstractCegarLoop]: === Iteration 364 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:47:30,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:47:30,327 INFO L85 PathProgramCache]: Analyzing trace with hash 704632400, now seen corresponding path program 60 times [2022-01-19 00:47:30,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:47:30,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148309362] [2022-01-19 00:47:30,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:47:30,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:47:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:47:30,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:47:30,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:47:30,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148309362] [2022-01-19 00:47:30,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148309362] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:47:30,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:47:30,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:47:30,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970257452] [2022-01-19 00:47:30,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:47:30,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:47:30,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:47:30,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:47:30,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:47:30,428 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:47:30,429 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 722 places, 442 transitions, 6348 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:30,429 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:47:30,429 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:47:30,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:47:31,382 INFO L129 PetriNetUnfolder]: 449/1893 cut-off events. [2022-01-19 00:47:31,383 INFO L130 PetriNetUnfolder]: For 42491/42529 co-relation queries the response was YES. [2022-01-19 00:47:31,424 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13367 conditions, 1893 events. 449/1893 cut-off events. For 42491/42529 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 13571 event pairs, 175 based on Foata normal form. 9/1843 useless extension candidates. Maximal degree in co-relation 13053. Up to 489 conditions per place. [2022-01-19 00:47:31,430 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 227 selfloop transitions, 61 changer transitions 66/495 dead transitions. [2022-01-19 00:47:31,430 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 724 places, 495 transitions, 8082 flow [2022-01-19 00:47:31,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:47:31,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:47:31,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4793 transitions. [2022-01-19 00:47:31,432 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7607936507936508 [2022-01-19 00:47:31,432 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4793 transitions. [2022-01-19 00:47:31,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4793 transitions. [2022-01-19 00:47:31,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:47:31,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4793 transitions. [2022-01-19 00:47:31,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.76666666666668) internal successors, (4793), 30 states have internal predecessors, (4793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:31,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:31,438 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:31,438 INFO L186 Difference]: Start difference. First operand has 722 places, 442 transitions, 6348 flow. Second operand 30 states and 4793 transitions. [2022-01-19 00:47:31,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 724 places, 495 transitions, 8082 flow [2022-01-19 00:47:31,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 694 places, 495 transitions, 7740 flow, removed 28 selfloop flow, removed 30 redundant places. [2022-01-19 00:47:31,741 INFO L242 Difference]: Finished difference. Result has 701 places, 398 transitions, 5225 flow [2022-01-19 00:47:31,742 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6038, PETRI_DIFFERENCE_MINUEND_PLACES=665, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5225, PETRI_PLACES=701, PETRI_TRANSITIONS=398} [2022-01-19 00:47:31,742 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 514 predicate places. [2022-01-19 00:47:31,742 INFO L470 AbstractCegarLoop]: Abstraction has has 701 places, 398 transitions, 5225 flow [2022-01-19 00:47:31,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:31,742 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:47:31,742 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:47:31,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable363 [2022-01-19 00:47:31,742 INFO L402 AbstractCegarLoop]: === Iteration 365 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:47:31,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:47:31,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1213269254, now seen corresponding path program 61 times [2022-01-19 00:47:31,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:47:31,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735818254] [2022-01-19 00:47:31,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:47:31,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:47:31,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:47:31,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:47:31,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:47:31,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735818254] [2022-01-19 00:47:31,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735818254] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:47:31,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:47:31,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:47:31,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302526639] [2022-01-19 00:47:31,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:47:31,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:47:31,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:47:31,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:47:31,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:47:31,843 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:47:31,843 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 701 places, 398 transitions, 5225 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:31,843 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:47:31,843 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:47:31,843 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:47:32,729 INFO L129 PetriNetUnfolder]: 425/1794 cut-off events. [2022-01-19 00:47:32,729 INFO L130 PetriNetUnfolder]: For 38764/38802 co-relation queries the response was YES. [2022-01-19 00:47:32,763 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12472 conditions, 1794 events. 425/1794 cut-off events. For 38764/38802 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 12551 event pairs, 176 based on Foata normal form. 9/1745 useless extension candidates. Maximal degree in co-relation 12170. Up to 478 conditions per place. [2022-01-19 00:47:32,768 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 199 selfloop transitions, 53 changer transitions 64/457 dead transitions. [2022-01-19 00:47:32,768 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 678 places, 457 transitions, 7004 flow [2022-01-19 00:47:32,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:47:32,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:47:32,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4637 transitions. [2022-01-19 00:47:32,770 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7614121510673235 [2022-01-19 00:47:32,770 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4637 transitions. [2022-01-19 00:47:32,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4637 transitions. [2022-01-19 00:47:32,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:47:32,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4637 transitions. [2022-01-19 00:47:32,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 159.89655172413794) internal successors, (4637), 29 states have internal predecessors, (4637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:32,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:32,776 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:32,776 INFO L186 Difference]: Start difference. First operand has 701 places, 398 transitions, 5225 flow. Second operand 29 states and 4637 transitions. [2022-01-19 00:47:32,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 678 places, 457 transitions, 7004 flow [2022-01-19 00:47:33,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 645 places, 457 transitions, 6515 flow, removed 35 selfloop flow, removed 33 redundant places. [2022-01-19 00:47:33,024 INFO L242 Difference]: Finished difference. Result has 654 places, 362 transitions, 4206 flow [2022-01-19 00:47:33,024 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4815, PETRI_DIFFERENCE_MINUEND_PLACES=617, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=4206, PETRI_PLACES=654, PETRI_TRANSITIONS=362} [2022-01-19 00:47:33,024 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 467 predicate places. [2022-01-19 00:47:33,024 INFO L470 AbstractCegarLoop]: Abstraction has has 654 places, 362 transitions, 4206 flow [2022-01-19 00:47:33,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:33,025 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:47:33,025 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:47:33,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable364 [2022-01-19 00:47:33,025 INFO L402 AbstractCegarLoop]: === Iteration 366 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:47:33,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:47:33,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1115766212, now seen corresponding path program 62 times [2022-01-19 00:47:33,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:47:33,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070456823] [2022-01-19 00:47:33,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:47:33,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:47:33,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:47:33,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:47:33,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:47:33,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070456823] [2022-01-19 00:47:33,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070456823] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:47:33,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:47:33,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:47:33,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035574544] [2022-01-19 00:47:33,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:47:33,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:47:33,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:47:33,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:47:33,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:47:33,125 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:47:33,126 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 654 places, 362 transitions, 4206 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:33,126 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:47:33,126 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:47:33,126 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:47:33,908 INFO L129 PetriNetUnfolder]: 391/1663 cut-off events. [2022-01-19 00:47:33,908 INFO L130 PetriNetUnfolder]: For 32999/33022 co-relation queries the response was YES. [2022-01-19 00:47:33,941 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11210 conditions, 1663 events. 391/1663 cut-off events. For 32999/33022 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 11344 event pairs, 165 based on Foata normal form. 5/1611 useless extension candidates. Maximal degree in co-relation 10918. Up to 457 conditions per place. [2022-01-19 00:47:33,946 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 168 selfloop transitions, 30 changer transitions 68/407 dead transitions. [2022-01-19 00:47:33,946 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 407 transitions, 5559 flow [2022-01-19 00:47:33,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:47:33,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:47:33,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4775 transitions. [2022-01-19 00:47:33,949 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7579365079365079 [2022-01-19 00:47:33,949 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4775 transitions. [2022-01-19 00:47:33,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4775 transitions. [2022-01-19 00:47:33,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:47:33,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4775 transitions. [2022-01-19 00:47:33,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.16666666666666) internal successors, (4775), 30 states have internal predecessors, (4775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:33,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:33,954 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:33,955 INFO L186 Difference]: Start difference. First operand has 654 places, 362 transitions, 4206 flow. Second operand 30 states and 4775 transitions. [2022-01-19 00:47:33,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 407 transitions, 5559 flow [2022-01-19 00:47:34,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 407 transitions, 5247 flow, removed 28 selfloop flow, removed 32 redundant places. [2022-01-19 00:47:34,149 INFO L242 Difference]: Finished difference. Result has 612 places, 309 transitions, 3014 flow [2022-01-19 00:47:34,149 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3918, PETRI_DIFFERENCE_MINUEND_PLACES=578, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3014, PETRI_PLACES=612, PETRI_TRANSITIONS=309} [2022-01-19 00:47:34,150 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 425 predicate places. [2022-01-19 00:47:34,150 INFO L470 AbstractCegarLoop]: Abstraction has has 612 places, 309 transitions, 3014 flow [2022-01-19 00:47:34,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:34,150 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:47:34,150 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:47:34,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable365 [2022-01-19 00:47:34,150 INFO L402 AbstractCegarLoop]: === Iteration 367 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:47:34,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:47:34,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1731795466, now seen corresponding path program 63 times [2022-01-19 00:47:34,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:47:34,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9772690] [2022-01-19 00:47:34,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:47:34,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:47:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:47:34,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:47:34,250 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:47:34,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9772690] [2022-01-19 00:47:34,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9772690] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:47:34,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:47:34,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:47:34,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288247451] [2022-01-19 00:47:34,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:47:34,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:47:34,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:47:34,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:47:34,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:47:34,251 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:47:34,252 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 612 places, 309 transitions, 3014 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:34,252 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:47:34,252 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:47:34,252 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:47:35,330 INFO L129 PetriNetUnfolder]: 430/1772 cut-off events. [2022-01-19 00:47:35,330 INFO L130 PetriNetUnfolder]: For 36265/36290 co-relation queries the response was YES. [2022-01-19 00:47:35,364 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12294 conditions, 1772 events. 430/1772 cut-off events. For 36265/36290 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 12245 event pairs, 212 based on Foata normal form. 3/1718 useless extension candidates. Maximal degree in co-relation 12015. Up to 460 conditions per place. [2022-01-19 00:47:35,370 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 190 selfloop transitions, 51 changer transitions 74/456 dead transitions. [2022-01-19 00:47:35,370 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 588 places, 456 transitions, 6942 flow [2022-01-19 00:47:35,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 00:47:35,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 00:47:35,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7335 transitions. [2022-01-19 00:47:35,373 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7593167701863354 [2022-01-19 00:47:35,373 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7335 transitions. [2022-01-19 00:47:35,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7335 transitions. [2022-01-19 00:47:35,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:47:35,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7335 transitions. [2022-01-19 00:47:35,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.45652173913044) internal successors, (7335), 46 states have internal predecessors, (7335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:35,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:35,382 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:35,382 INFO L186 Difference]: Start difference. First operand has 612 places, 309 transitions, 3014 flow. Second operand 46 states and 7335 transitions. [2022-01-19 00:47:35,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 588 places, 456 transitions, 6942 flow [2022-01-19 00:47:35,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 553 places, 456 transitions, 6321 flow, removed 92 selfloop flow, removed 35 redundant places. [2022-01-19 00:47:35,548 INFO L242 Difference]: Finished difference. Result has 584 places, 329 transitions, 3411 flow [2022-01-19 00:47:35,548 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2742, PETRI_DIFFERENCE_MINUEND_PLACES=508, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=3411, PETRI_PLACES=584, PETRI_TRANSITIONS=329} [2022-01-19 00:47:35,549 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 397 predicate places. [2022-01-19 00:47:35,549 INFO L470 AbstractCegarLoop]: Abstraction has has 584 places, 329 transitions, 3411 flow [2022-01-19 00:47:35,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:35,549 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:47:35,549 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:47:35,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable366 [2022-01-19 00:47:35,549 INFO L402 AbstractCegarLoop]: === Iteration 368 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:47:35,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:47:35,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1184965612, now seen corresponding path program 64 times [2022-01-19 00:47:35,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:47:35,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958377693] [2022-01-19 00:47:35,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:47:35,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:47:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:47:35,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:47:35,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:47:35,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958377693] [2022-01-19 00:47:35,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958377693] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:47:35,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:47:35,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:47:35,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208179623] [2022-01-19 00:47:35,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:47:35,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:47:35,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:47:35,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:47:35,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:47:35,667 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:47:35,667 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 584 places, 329 transitions, 3411 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:35,668 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:47:35,668 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:47:35,668 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:47:36,794 INFO L129 PetriNetUnfolder]: 474/1904 cut-off events. [2022-01-19 00:47:36,794 INFO L130 PetriNetUnfolder]: For 41680/41690 co-relation queries the response was YES. [2022-01-19 00:47:36,831 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13573 conditions, 1904 events. 474/1904 cut-off events. For 41680/41690 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 13378 event pairs, 252 based on Foata normal form. 1/1846 useless extension candidates. Maximal degree in co-relation 13289. Up to 459 conditions per place. [2022-01-19 00:47:36,837 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 194 selfloop transitions, 65 changer transitions 74/474 dead transitions. [2022-01-19 00:47:36,837 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 474 transitions, 7558 flow [2022-01-19 00:47:36,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-19 00:47:36,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-01-19 00:47:36,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6865 transitions. [2022-01-19 00:47:36,840 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7602436323366556 [2022-01-19 00:47:36,841 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6865 transitions. [2022-01-19 00:47:36,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6865 transitions. [2022-01-19 00:47:36,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:47:36,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6865 transitions. [2022-01-19 00:47:36,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 159.65116279069767) internal successors, (6865), 43 states have internal predecessors, (6865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:36,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:36,849 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:36,849 INFO L186 Difference]: Start difference. First operand has 584 places, 329 transitions, 3411 flow. Second operand 43 states and 6865 transitions. [2022-01-19 00:47:36,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 474 transitions, 7558 flow [2022-01-19 00:47:37,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 474 transitions, 6769 flow, removed 382 selfloop flow, removed 25 redundant places. [2022-01-19 00:47:37,041 INFO L242 Difference]: Finished difference. Result has 604 places, 350 transitions, 3883 flow [2022-01-19 00:47:37,042 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3165, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=3883, PETRI_PLACES=604, PETRI_TRANSITIONS=350} [2022-01-19 00:47:37,042 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 417 predicate places. [2022-01-19 00:47:37,042 INFO L470 AbstractCegarLoop]: Abstraction has has 604 places, 350 transitions, 3883 flow [2022-01-19 00:47:37,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:37,042 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:47:37,042 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:47:37,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable367 [2022-01-19 00:47:37,042 INFO L402 AbstractCegarLoop]: === Iteration 369 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:47:37,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:47:37,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1833710810, now seen corresponding path program 65 times [2022-01-19 00:47:37,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:47:37,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335241384] [2022-01-19 00:47:37,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:47:37,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:47:37,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:47:37,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:47:37,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:47:37,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335241384] [2022-01-19 00:47:37,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335241384] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:47:37,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:47:37,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:47:37,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312735370] [2022-01-19 00:47:37,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:47:37,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:47:37,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:47:37,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:47:37,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:47:37,141 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:47:37,142 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 350 transitions, 3883 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:37,142 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:47:37,142 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:47:37,142 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:47:38,256 INFO L129 PetriNetUnfolder]: 512/1978 cut-off events. [2022-01-19 00:47:38,256 INFO L130 PetriNetUnfolder]: For 50741/50774 co-relation queries the response was YES. [2022-01-19 00:47:38,295 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15031 conditions, 1978 events. 512/1978 cut-off events. For 50741/50774 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 14040 event pairs, 235 based on Foata normal form. 3/1919 useless extension candidates. Maximal degree in co-relation 14735. Up to 460 conditions per place. [2022-01-19 00:47:38,302 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 209 selfloop transitions, 71 changer transitions 74/495 dead transitions. [2022-01-19 00:47:38,302 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 618 places, 495 transitions, 8316 flow [2022-01-19 00:47:38,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 00:47:38,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 00:47:38,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7181 transitions. [2022-01-19 00:47:38,305 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7598941798941798 [2022-01-19 00:47:38,305 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7181 transitions. [2022-01-19 00:47:38,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7181 transitions. [2022-01-19 00:47:38,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:47:38,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7181 transitions. [2022-01-19 00:47:38,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.57777777777778) internal successors, (7181), 45 states have internal predecessors, (7181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:38,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:38,314 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:38,314 INFO L186 Difference]: Start difference. First operand has 604 places, 350 transitions, 3883 flow. Second operand 45 states and 7181 transitions. [2022-01-19 00:47:38,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 618 places, 495 transitions, 8316 flow [2022-01-19 00:47:38,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 495 transitions, 7481 flow, removed 383 selfloop flow, removed 29 redundant places. [2022-01-19 00:47:38,552 INFO L242 Difference]: Finished difference. Result has 624 places, 369 transitions, 4406 flow [2022-01-19 00:47:38,552 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3692, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=4406, PETRI_PLACES=624, PETRI_TRANSITIONS=369} [2022-01-19 00:47:38,552 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 437 predicate places. [2022-01-19 00:47:38,552 INFO L470 AbstractCegarLoop]: Abstraction has has 624 places, 369 transitions, 4406 flow [2022-01-19 00:47:38,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:38,553 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:47:38,553 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:47:38,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable368 [2022-01-19 00:47:38,553 INFO L402 AbstractCegarLoop]: === Iteration 370 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:47:38,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:47:38,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1492905002, now seen corresponding path program 66 times [2022-01-19 00:47:38,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:47:38,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906239936] [2022-01-19 00:47:38,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:47:38,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:47:38,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:47:38,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:47:38,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:47:38,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906239936] [2022-01-19 00:47:38,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906239936] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:47:38,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:47:38,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:47:38,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198948824] [2022-01-19 00:47:38,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:47:38,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:47:38,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:47:38,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:47:38,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:47:38,655 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:47:38,655 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 369 transitions, 4406 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:38,656 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:47:38,656 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:47:38,656 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:47:39,772 INFO L129 PetriNetUnfolder]: 507/1993 cut-off events. [2022-01-19 00:47:39,773 INFO L130 PetriNetUnfolder]: For 49440/49456 co-relation queries the response was YES. [2022-01-19 00:47:39,813 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14986 conditions, 1993 events. 507/1993 cut-off events. For 49440/49456 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 14267 event pairs, 261 based on Foata normal form. 1/1931 useless extension candidates. Maximal degree in co-relation 14682. Up to 459 conditions per place. [2022-01-19 00:47:39,820 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 213 selfloop transitions, 75 changer transitions 76/505 dead transitions. [2022-01-19 00:47:39,820 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 635 places, 505 transitions, 8664 flow [2022-01-19 00:47:39,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 00:47:39,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 00:47:39,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7026 transitions. [2022-01-19 00:47:39,823 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7603896103896104 [2022-01-19 00:47:39,823 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7026 transitions. [2022-01-19 00:47:39,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7026 transitions. [2022-01-19 00:47:39,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:47:39,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7026 transitions. [2022-01-19 00:47:39,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.6818181818182) internal successors, (7026), 44 states have internal predecessors, (7026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:39,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:39,832 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:39,832 INFO L186 Difference]: Start difference. First operand has 624 places, 369 transitions, 4406 flow. Second operand 44 states and 7026 transitions. [2022-01-19 00:47:39,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 635 places, 505 transitions, 8664 flow [2022-01-19 00:47:40,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 505 transitions, 8015 flow, removed 312 selfloop flow, removed 31 redundant places. [2022-01-19 00:47:40,081 INFO L242 Difference]: Finished difference. Result has 639 places, 379 transitions, 4818 flow [2022-01-19 00:47:40,082 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4246, PETRI_DIFFERENCE_MINUEND_PLACES=561, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=4818, PETRI_PLACES=639, PETRI_TRANSITIONS=379} [2022-01-19 00:47:40,082 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 452 predicate places. [2022-01-19 00:47:40,082 INFO L470 AbstractCegarLoop]: Abstraction has has 639 places, 379 transitions, 4818 flow [2022-01-19 00:47:40,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:40,082 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:47:40,082 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:47:40,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable369 [2022-01-19 00:47:40,082 INFO L402 AbstractCegarLoop]: === Iteration 371 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:47:40,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:47:40,083 INFO L85 PathProgramCache]: Analyzing trace with hash -120890968, now seen corresponding path program 67 times [2022-01-19 00:47:40,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:47:40,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506520165] [2022-01-19 00:47:40,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:47:40,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:47:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:47:40,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:47:40,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:47:40,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506520165] [2022-01-19 00:47:40,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506520165] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:47:40,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:47:40,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:47:40,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673475486] [2022-01-19 00:47:40,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:47:40,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:47:40,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:47:40,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:47:40,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:47:40,186 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:47:40,187 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 379 transitions, 4818 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:40,187 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:47:40,187 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:47:40,187 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:47:41,226 INFO L129 PetriNetUnfolder]: 532/2062 cut-off events. [2022-01-19 00:47:41,226 INFO L130 PetriNetUnfolder]: For 54574/54584 co-relation queries the response was YES. [2022-01-19 00:47:41,270 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15913 conditions, 2062 events. 532/2062 cut-off events. For 54574/54584 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 14807 event pairs, 263 based on Foata normal form. 1/2003 useless extension candidates. Maximal degree in co-relation 15604. Up to 459 conditions per place. [2022-01-19 00:47:41,277 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 214 selfloop transitions, 92 changer transitions 68/515 dead transitions. [2022-01-19 00:47:41,277 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 642 places, 515 transitions, 8973 flow [2022-01-19 00:47:41,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 00:47:41,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 00:47:41,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5605 transitions. [2022-01-19 00:47:41,280 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625850340136054 [2022-01-19 00:47:41,280 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5605 transitions. [2022-01-19 00:47:41,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5605 transitions. [2022-01-19 00:47:41,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:47:41,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5605 transitions. [2022-01-19 00:47:41,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.14285714285714) internal successors, (5605), 35 states have internal predecessors, (5605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:41,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:41,287 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:41,287 INFO L186 Difference]: Start difference. First operand has 639 places, 379 transitions, 4818 flow. Second operand 35 states and 5605 transitions. [2022-01-19 00:47:41,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 642 places, 515 transitions, 8973 flow [2022-01-19 00:47:41,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 613 places, 515 transitions, 8293 flow, removed 283 selfloop flow, removed 29 redundant places. [2022-01-19 00:47:41,568 INFO L242 Difference]: Finished difference. Result has 639 places, 398 transitions, 5358 flow [2022-01-19 00:47:41,568 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4550, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=379, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5358, PETRI_PLACES=639, PETRI_TRANSITIONS=398} [2022-01-19 00:47:41,568 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 452 predicate places. [2022-01-19 00:47:41,568 INFO L470 AbstractCegarLoop]: Abstraction has has 639 places, 398 transitions, 5358 flow [2022-01-19 00:47:41,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:41,568 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:47:41,568 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:47:41,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable370 [2022-01-19 00:47:41,569 INFO L402 AbstractCegarLoop]: === Iteration 372 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:47:41,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:47:41,569 INFO L85 PathProgramCache]: Analyzing trace with hash -383763530, now seen corresponding path program 68 times [2022-01-19 00:47:41,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:47:41,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716633300] [2022-01-19 00:47:41,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:47:41,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:47:41,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:47:41,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:47:41,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:47:41,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716633300] [2022-01-19 00:47:41,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716633300] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:47:41,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:47:41,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:47:41,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012239100] [2022-01-19 00:47:41,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:47:41,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:47:41,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:47:41,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:47:41,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:47:41,674 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:47:41,675 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 398 transitions, 5358 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:41,675 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:47:41,675 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:47:41,675 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:47:42,810 INFO L129 PetriNetUnfolder]: 553/2091 cut-off events. [2022-01-19 00:47:42,811 INFO L130 PetriNetUnfolder]: For 55387/55416 co-relation queries the response was YES. [2022-01-19 00:47:42,855 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16417 conditions, 2091 events. 553/2091 cut-off events. For 55387/55416 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 15083 event pairs, 272 based on Foata normal form. 3/2031 useless extension candidates. Maximal degree in co-relation 16110. Up to 459 conditions per place. [2022-01-19 00:47:42,863 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 225 selfloop transitions, 91 changer transitions 65/522 dead transitions. [2022-01-19 00:47:42,863 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 655 places, 522 transitions, 9219 flow [2022-01-19 00:47:42,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:47:42,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:47:42,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6083 transitions. [2022-01-19 00:47:42,865 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.762280701754386 [2022-01-19 00:47:42,866 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6083 transitions. [2022-01-19 00:47:42,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6083 transitions. [2022-01-19 00:47:42,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:47:42,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6083 transitions. [2022-01-19 00:47:42,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.07894736842104) internal successors, (6083), 38 states have internal predecessors, (6083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:42,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:42,873 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:42,873 INFO L186 Difference]: Start difference. First operand has 639 places, 398 transitions, 5358 flow. Second operand 38 states and 6083 transitions. [2022-01-19 00:47:42,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 655 places, 522 transitions, 9219 flow [2022-01-19 00:47:43,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 634 places, 522 transitions, 8615 flow, removed 211 selfloop flow, removed 21 redundant places. [2022-01-19 00:47:43,177 INFO L242 Difference]: Finished difference. Result has 659 places, 413 transitions, 5736 flow [2022-01-19 00:47:43,177 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5028, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=398, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=5736, PETRI_PLACES=659, PETRI_TRANSITIONS=413} [2022-01-19 00:47:43,178 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 472 predicate places. [2022-01-19 00:47:43,178 INFO L470 AbstractCegarLoop]: Abstraction has has 659 places, 413 transitions, 5736 flow [2022-01-19 00:47:43,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:43,178 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:47:43,178 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:47:43,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable371 [2022-01-19 00:47:43,178 INFO L402 AbstractCegarLoop]: === Iteration 373 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:47:43,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:47:43,179 INFO L85 PathProgramCache]: Analyzing trace with hash -747827044, now seen corresponding path program 69 times [2022-01-19 00:47:43,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:47:43,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409036227] [2022-01-19 00:47:43,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:47:43,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:47:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:47:43,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:47:43,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:47:43,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409036227] [2022-01-19 00:47:43,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409036227] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:47:43,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:47:43,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:47:43,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59529860] [2022-01-19 00:47:43,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:47:43,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:47:43,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:47:43,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:47:43,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:47:43,283 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:47:43,284 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 659 places, 413 transitions, 5736 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:43,284 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:47:43,284 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:47:43,284 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:47:44,440 INFO L129 PetriNetUnfolder]: 577/2178 cut-off events. [2022-01-19 00:47:44,440 INFO L130 PetriNetUnfolder]: For 67947/67970 co-relation queries the response was YES. [2022-01-19 00:47:44,488 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17829 conditions, 2178 events. 577/2178 cut-off events. For 67947/67970 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 15992 event pairs, 302 based on Foata normal form. 3/2117 useless extension candidates. Maximal degree in co-relation 17514. Up to 459 conditions per place. [2022-01-19 00:47:44,496 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 228 selfloop transitions, 101 changer transitions 65/535 dead transitions. [2022-01-19 00:47:44,496 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 670 places, 535 transitions, 9804 flow [2022-01-19 00:47:44,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 00:47:44,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 00:47:44,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5770 transitions. [2022-01-19 00:47:44,499 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7632275132275133 [2022-01-19 00:47:44,499 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5770 transitions. [2022-01-19 00:47:44,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5770 transitions. [2022-01-19 00:47:44,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:47:44,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5770 transitions. [2022-01-19 00:47:44,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.27777777777777) internal successors, (5770), 36 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:44,505 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:44,506 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:44,506 INFO L186 Difference]: Start difference. First operand has 659 places, 413 transitions, 5736 flow. Second operand 36 states and 5770 transitions. [2022-01-19 00:47:44,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 670 places, 535 transitions, 9804 flow [2022-01-19 00:47:44,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 649 places, 535 transitions, 9234 flow, removed 228 selfloop flow, removed 21 redundant places. [2022-01-19 00:47:44,855 INFO L242 Difference]: Finished difference. Result has 674 places, 433 transitions, 6460 flow [2022-01-19 00:47:44,855 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5473, PETRI_DIFFERENCE_MINUEND_PLACES=614, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=6460, PETRI_PLACES=674, PETRI_TRANSITIONS=433} [2022-01-19 00:47:44,856 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 487 predicate places. [2022-01-19 00:47:44,856 INFO L470 AbstractCegarLoop]: Abstraction has has 674 places, 433 transitions, 6460 flow [2022-01-19 00:47:44,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:44,856 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:47:44,856 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:47:44,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable372 [2022-01-19 00:47:44,856 INFO L402 AbstractCegarLoop]: === Iteration 374 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:47:44,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:47:44,856 INFO L85 PathProgramCache]: Analyzing trace with hash 24107932, now seen corresponding path program 70 times [2022-01-19 00:47:44,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:47:44,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669253145] [2022-01-19 00:47:44,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:47:44,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:47:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:47:44,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:47:44,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:47:44,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669253145] [2022-01-19 00:47:44,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669253145] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:47:44,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:47:44,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:47:44,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460890306] [2022-01-19 00:47:44,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:47:44,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:47:44,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:47:44,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:47:44,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:47:44,959 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:47:44,959 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 674 places, 433 transitions, 6460 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:44,959 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:47:44,959 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:47:44,959 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:47:46,115 INFO L129 PetriNetUnfolder]: 603/2256 cut-off events. [2022-01-19 00:47:46,116 INFO L130 PetriNetUnfolder]: For 73553/73571 co-relation queries the response was YES. [2022-01-19 00:47:46,163 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18849 conditions, 2256 events. 603/2256 cut-off events. For 73553/73571 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 16781 event pairs, 290 based on Foata normal form. 1/2191 useless extension candidates. Maximal degree in co-relation 18527. Up to 459 conditions per place. [2022-01-19 00:47:46,172 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 249 selfloop transitions, 108 changer transitions 68/566 dead transitions. [2022-01-19 00:47:46,172 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 687 places, 566 transitions, 10891 flow [2022-01-19 00:47:46,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 00:47:46,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 00:47:46,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5766 transitions. [2022-01-19 00:47:46,175 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7626984126984127 [2022-01-19 00:47:46,175 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5766 transitions. [2022-01-19 00:47:46,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5766 transitions. [2022-01-19 00:47:46,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:47:46,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5766 transitions. [2022-01-19 00:47:46,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.16666666666666) internal successors, (5766), 36 states have internal predecessors, (5766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:46,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:46,181 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:46,181 INFO L186 Difference]: Start difference. First operand has 674 places, 433 transitions, 6460 flow. Second operand 36 states and 5766 transitions. [2022-01-19 00:47:46,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 687 places, 566 transitions, 10891 flow [2022-01-19 00:47:46,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 668 places, 566 transitions, 10309 flow, removed 229 selfloop flow, removed 19 redundant places. [2022-01-19 00:47:46,586 INFO L242 Difference]: Finished difference. Result has 693 places, 455 transitions, 7205 flow [2022-01-19 00:47:46,586 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6096, PETRI_DIFFERENCE_MINUEND_PLACES=633, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=7205, PETRI_PLACES=693, PETRI_TRANSITIONS=455} [2022-01-19 00:47:46,587 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 506 predicate places. [2022-01-19 00:47:46,587 INFO L470 AbstractCegarLoop]: Abstraction has has 693 places, 455 transitions, 7205 flow [2022-01-19 00:47:46,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:46,587 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:47:46,587 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:47:46,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable373 [2022-01-19 00:47:46,587 INFO L402 AbstractCegarLoop]: === Iteration 375 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:47:46,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:47:46,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1246694750, now seen corresponding path program 71 times [2022-01-19 00:47:46,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:47:46,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844107191] [2022-01-19 00:47:46,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:47:46,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:47:46,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:47:46,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:47:46,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:47:46,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844107191] [2022-01-19 00:47:46,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844107191] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:47:46,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:47:46,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:47:46,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451072211] [2022-01-19 00:47:46,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:47:46,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:47:46,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:47:46,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:47:46,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:47:46,692 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:47:46,692 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 693 places, 455 transitions, 7205 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:46,692 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:47:46,692 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:47:46,693 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:47:47,911 INFO L129 PetriNetUnfolder]: 596/2257 cut-off events. [2022-01-19 00:47:47,911 INFO L130 PetriNetUnfolder]: For 76502/76524 co-relation queries the response was YES. [2022-01-19 00:47:47,963 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18884 conditions, 2257 events. 596/2257 cut-off events. For 76502/76524 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 16871 event pairs, 290 based on Foata normal form. 3/2194 useless extension candidates. Maximal degree in co-relation 18553. Up to 459 conditions per place. [2022-01-19 00:47:47,971 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 253 selfloop transitions, 109 changer transitions 66/569 dead transitions. [2022-01-19 00:47:47,971 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 707 places, 569 transitions, 11331 flow [2022-01-19 00:47:47,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 00:47:47,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 00:47:47,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5929 transitions. [2022-01-19 00:47:47,974 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763063063063063 [2022-01-19 00:47:47,974 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5929 transitions. [2022-01-19 00:47:47,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5929 transitions. [2022-01-19 00:47:47,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:47:47,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5929 transitions. [2022-01-19 00:47:47,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.24324324324326) internal successors, (5929), 37 states have internal predecessors, (5929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:47,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:47,981 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:47,981 INFO L186 Difference]: Start difference. First operand has 693 places, 455 transitions, 7205 flow. Second operand 37 states and 5929 transitions. [2022-01-19 00:47:47,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 707 places, 569 transitions, 11331 flow [2022-01-19 00:47:48,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 688 places, 569 transitions, 10538 flow, removed 339 selfloop flow, removed 19 redundant places. [2022-01-19 00:47:48,410 INFO L242 Difference]: Finished difference. Result has 712 places, 466 transitions, 7521 flow [2022-01-19 00:47:48,410 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6814, PETRI_DIFFERENCE_MINUEND_PLACES=652, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=455, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=7521, PETRI_PLACES=712, PETRI_TRANSITIONS=466} [2022-01-19 00:47:48,410 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 525 predicate places. [2022-01-19 00:47:48,410 INFO L470 AbstractCegarLoop]: Abstraction has has 712 places, 466 transitions, 7521 flow [2022-01-19 00:47:48,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:48,411 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:47:48,411 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:47:48,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable374 [2022-01-19 00:47:48,411 INFO L402 AbstractCegarLoop]: === Iteration 376 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:47:48,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:47:48,411 INFO L85 PathProgramCache]: Analyzing trace with hash -986792438, now seen corresponding path program 72 times [2022-01-19 00:47:48,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:47:48,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144417404] [2022-01-19 00:47:48,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:47:48,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:47:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:47:48,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:47:48,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:47:48,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144417404] [2022-01-19 00:47:48,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144417404] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:47:48,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:47:48,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:47:48,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052917323] [2022-01-19 00:47:48,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:47:48,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:47:48,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:47:48,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:47:48,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:47:48,511 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:47:48,511 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 712 places, 466 transitions, 7521 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:48,511 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:47:48,511 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:47:48,512 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:47:49,742 INFO L129 PetriNetUnfolder]: 587/2248 cut-off events. [2022-01-19 00:47:49,742 INFO L130 PetriNetUnfolder]: For 75179/75207 co-relation queries the response was YES. [2022-01-19 00:47:49,795 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18539 conditions, 2248 events. 587/2248 cut-off events. For 75179/75207 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 16873 event pairs, 235 based on Foata normal form. 9/2196 useless extension candidates. Maximal degree in co-relation 18200. Up to 459 conditions per place. [2022-01-19 00:47:49,803 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 259 selfloop transitions, 116 changer transitions 66/582 dead transitions. [2022-01-19 00:47:49,803 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 726 places, 582 transitions, 11659 flow [2022-01-19 00:47:49,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:47:49,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:47:49,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6075 transitions. [2022-01-19 00:47:49,806 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612781954887218 [2022-01-19 00:47:49,806 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6075 transitions. [2022-01-19 00:47:49,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6075 transitions. [2022-01-19 00:47:49,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:47:49,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6075 transitions. [2022-01-19 00:47:49,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.8684210526316) internal successors, (6075), 38 states have internal predecessors, (6075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:49,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:49,813 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:49,813 INFO L186 Difference]: Start difference. First operand has 712 places, 466 transitions, 7521 flow. Second operand 38 states and 6075 transitions. [2022-01-19 00:47:49,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 726 places, 582 transitions, 11659 flow [2022-01-19 00:47:50,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 705 places, 582 transitions, 11043 flow, removed 239 selfloop flow, removed 21 redundant places. [2022-01-19 00:47:50,289 INFO L242 Difference]: Finished difference. Result has 727 places, 477 transitions, 7851 flow [2022-01-19 00:47:50,290 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7165, PETRI_DIFFERENCE_MINUEND_PLACES=668, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=7851, PETRI_PLACES=727, PETRI_TRANSITIONS=477} [2022-01-19 00:47:50,290 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 540 predicate places. [2022-01-19 00:47:50,290 INFO L470 AbstractCegarLoop]: Abstraction has has 727 places, 477 transitions, 7851 flow [2022-01-19 00:47:50,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:50,290 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:47:50,290 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:47:50,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable375 [2022-01-19 00:47:50,290 INFO L402 AbstractCegarLoop]: === Iteration 377 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:47:50,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:47:50,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1323900006, now seen corresponding path program 73 times [2022-01-19 00:47:50,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:47:50,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124953546] [2022-01-19 00:47:50,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:47:50,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:47:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:47:50,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:47:50,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:47:50,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124953546] [2022-01-19 00:47:50,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124953546] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:47:50,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:47:50,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:47:50,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850880788] [2022-01-19 00:47:50,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:47:50,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:47:50,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:47:50,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:47:50,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:47:50,438 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:47:50,439 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 727 places, 477 transitions, 7851 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:50,439 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:47:50,439 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:47:50,439 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:47:51,697 INFO L129 PetriNetUnfolder]: 607/2301 cut-off events. [2022-01-19 00:47:51,697 INFO L130 PetriNetUnfolder]: For 82807/82833 co-relation queries the response was YES. [2022-01-19 00:47:51,751 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19414 conditions, 2301 events. 607/2301 cut-off events. For 82807/82833 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 17430 event pairs, 259 based on Foata normal form. 11/2245 useless extension candidates. Maximal degree in co-relation 19071. Up to 459 conditions per place. [2022-01-19 00:47:51,760 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 273 selfloop transitions, 117 changer transitions 66/597 dead transitions. [2022-01-19 00:47:51,760 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 739 places, 597 transitions, 12206 flow [2022-01-19 00:47:51,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 00:47:51,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 00:47:51,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5921 transitions. [2022-01-19 00:47:51,790 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.762033462033462 [2022-01-19 00:47:51,790 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5921 transitions. [2022-01-19 00:47:51,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5921 transitions. [2022-01-19 00:47:51,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:47:51,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5921 transitions. [2022-01-19 00:47:51,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.02702702702703) internal successors, (5921), 37 states have internal predecessors, (5921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:51,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:51,797 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:51,797 INFO L186 Difference]: Start difference. First operand has 727 places, 477 transitions, 7851 flow. Second operand 37 states and 5921 transitions. [2022-01-19 00:47:51,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 739 places, 597 transitions, 12206 flow [2022-01-19 00:47:52,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 718 places, 597 transitions, 11638 flow, removed 221 selfloop flow, removed 21 redundant places. [2022-01-19 00:47:52,320 INFO L242 Difference]: Finished difference. Result has 743 places, 494 transitions, 8429 flow [2022-01-19 00:47:52,320 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7519, PETRI_DIFFERENCE_MINUEND_PLACES=682, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=8429, PETRI_PLACES=743, PETRI_TRANSITIONS=494} [2022-01-19 00:47:52,321 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 556 predicate places. [2022-01-19 00:47:52,321 INFO L470 AbstractCegarLoop]: Abstraction has has 743 places, 494 transitions, 8429 flow [2022-01-19 00:47:52,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:52,321 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:47:52,321 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:47:52,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable376 [2022-01-19 00:47:52,321 INFO L402 AbstractCegarLoop]: === Iteration 378 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:47:52,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:47:52,322 INFO L85 PathProgramCache]: Analyzing trace with hash 784382108, now seen corresponding path program 74 times [2022-01-19 00:47:52,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:47:52,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318572407] [2022-01-19 00:47:52,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:47:52,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:47:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:47:52,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:47:52,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:47:52,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318572407] [2022-01-19 00:47:52,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318572407] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:47:52,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:47:52,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:47:52,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850502330] [2022-01-19 00:47:52,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:47:52,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:47:52,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:47:52,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:47:52,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:47:52,425 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:47:52,426 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 743 places, 494 transitions, 8429 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:52,426 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:47:52,426 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:47:52,426 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:47:53,745 INFO L129 PetriNetUnfolder]: 628/2390 cut-off events. [2022-01-19 00:47:53,746 INFO L130 PetriNetUnfolder]: For 94225/94252 co-relation queries the response was YES. [2022-01-19 00:47:53,805 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20771 conditions, 2390 events. 628/2390 cut-off events. For 94225/94252 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 18357 event pairs, 285 based on Foata normal form. 7/2331 useless extension candidates. Maximal degree in co-relation 20421. Up to 459 conditions per place. [2022-01-19 00:47:53,815 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 288 selfloop transitions, 117 changer transitions 64/610 dead transitions. [2022-01-19 00:47:53,815 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 757 places, 610 transitions, 12823 flow [2022-01-19 00:47:53,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:47:53,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:47:53,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6079 transitions. [2022-01-19 00:47:53,818 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617794486215539 [2022-01-19 00:47:53,818 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6079 transitions. [2022-01-19 00:47:53,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6079 transitions. [2022-01-19 00:47:53,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:47:53,819 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6079 transitions. [2022-01-19 00:47:53,822 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.97368421052633) internal successors, (6079), 38 states have internal predecessors, (6079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:53,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:53,825 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:53,825 INFO L186 Difference]: Start difference. First operand has 743 places, 494 transitions, 8429 flow. Second operand 38 states and 6079 transitions. [2022-01-19 00:47:53,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 757 places, 610 transitions, 12823 flow [2022-01-19 00:47:54,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 736 places, 610 transitions, 12263 flow, removed 219 selfloop flow, removed 21 redundant places. [2022-01-19 00:47:54,412 INFO L242 Difference]: Finished difference. Result has 758 places, 511 transitions, 9002 flow [2022-01-19 00:47:54,412 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8098, PETRI_DIFFERENCE_MINUEND_PLACES=699, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9002, PETRI_PLACES=758, PETRI_TRANSITIONS=511} [2022-01-19 00:47:54,412 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 571 predicate places. [2022-01-19 00:47:54,413 INFO L470 AbstractCegarLoop]: Abstraction has has 758 places, 511 transitions, 9002 flow [2022-01-19 00:47:54,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:54,413 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:47:54,413 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:47:54,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable377 [2022-01-19 00:47:54,413 INFO L402 AbstractCegarLoop]: === Iteration 379 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:47:54,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:47:54,413 INFO L85 PathProgramCache]: Analyzing trace with hash -66473082, now seen corresponding path program 75 times [2022-01-19 00:47:54,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:47:54,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861750523] [2022-01-19 00:47:54,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:47:54,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:47:54,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:47:54,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:47:54,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:47:54,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861750523] [2022-01-19 00:47:54,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861750523] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:47:54,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:47:54,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:47:54,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694762399] [2022-01-19 00:47:54,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:47:54,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:47:54,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:47:54,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:47:54,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:47:54,516 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:47:54,517 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 758 places, 511 transitions, 9002 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:54,517 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:47:54,517 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:47:54,517 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:47:55,841 INFO L129 PetriNetUnfolder]: 622/2357 cut-off events. [2022-01-19 00:47:55,842 INFO L130 PetriNetUnfolder]: For 94815/94848 co-relation queries the response was YES. [2022-01-19 00:47:55,899 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20415 conditions, 2357 events. 622/2357 cut-off events. For 94815/94848 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 18029 event pairs, 255 based on Foata normal form. 15/2306 useless extension candidates. Maximal degree in co-relation 20061. Up to 459 conditions per place. [2022-01-19 00:47:55,909 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 297 selfloop transitions, 118 changer transitions 66/622 dead transitions. [2022-01-19 00:47:55,910 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 771 places, 622 transitions, 13323 flow [2022-01-19 00:47:55,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:47:55,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:47:55,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6081 transitions. [2022-01-19 00:47:55,912 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.76203007518797 [2022-01-19 00:47:55,912 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6081 transitions. [2022-01-19 00:47:55,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6081 transitions. [2022-01-19 00:47:55,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:47:55,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6081 transitions. [2022-01-19 00:47:55,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.02631578947367) internal successors, (6081), 38 states have internal predecessors, (6081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:55,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:55,920 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:55,920 INFO L186 Difference]: Start difference. First operand has 758 places, 511 transitions, 9002 flow. Second operand 38 states and 6081 transitions. [2022-01-19 00:47:55,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 771 places, 622 transitions, 13323 flow [2022-01-19 00:47:56,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 753 places, 622 transitions, 12732 flow, removed 232 selfloop flow, removed 18 redundant places. [2022-01-19 00:47:56,538 INFO L242 Difference]: Finished difference. Result has 777 places, 518 transitions, 9220 flow [2022-01-19 00:47:56,538 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8661, PETRI_DIFFERENCE_MINUEND_PLACES=716, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9220, PETRI_PLACES=777, PETRI_TRANSITIONS=518} [2022-01-19 00:47:56,539 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 590 predicate places. [2022-01-19 00:47:56,539 INFO L470 AbstractCegarLoop]: Abstraction has has 777 places, 518 transitions, 9220 flow [2022-01-19 00:47:56,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:56,539 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:47:56,539 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:47:56,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable378 [2022-01-19 00:47:56,539 INFO L402 AbstractCegarLoop]: === Iteration 380 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:47:56,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:47:56,539 INFO L85 PathProgramCache]: Analyzing trace with hash 71637652, now seen corresponding path program 76 times [2022-01-19 00:47:56,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:47:56,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616730614] [2022-01-19 00:47:56,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:47:56,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:47:56,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:47:56,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:47:56,642 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:47:56,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616730614] [2022-01-19 00:47:56,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616730614] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:47:56,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:47:56,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:47:56,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593855646] [2022-01-19 00:47:56,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:47:56,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:47:56,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:47:56,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:47:56,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:47:56,643 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:47:56,644 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 777 places, 518 transitions, 9220 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:56,644 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:47:56,644 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:47:56,644 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:47:57,974 INFO L129 PetriNetUnfolder]: 617/2393 cut-off events. [2022-01-19 00:47:57,974 INFO L130 PetriNetUnfolder]: For 96939/96972 co-relation queries the response was YES. [2022-01-19 00:47:58,035 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20571 conditions, 2393 events. 617/2393 cut-off events. For 96939/96972 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 18530 event pairs, 282 based on Foata normal form. 11/2337 useless extension candidates. Maximal degree in co-relation 20208. Up to 459 conditions per place. [2022-01-19 00:47:58,044 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 303 selfloop transitions, 116 changer transitions 66/626 dead transitions. [2022-01-19 00:47:58,044 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 789 places, 626 transitions, 13505 flow [2022-01-19 00:47:58,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 00:47:58,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 00:47:58,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5925 transitions. [2022-01-19 00:47:58,047 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625482625482626 [2022-01-19 00:47:58,047 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5925 transitions. [2022-01-19 00:47:58,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5925 transitions. [2022-01-19 00:47:58,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:47:58,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5925 transitions. [2022-01-19 00:47:58,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.13513513513513) internal successors, (5925), 37 states have internal predecessors, (5925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:58,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:58,054 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:58,054 INFO L186 Difference]: Start difference. First operand has 777 places, 518 transitions, 9220 flow. Second operand 37 states and 5925 transitions. [2022-01-19 00:47:58,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 789 places, 626 transitions, 13505 flow [2022-01-19 00:47:58,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 768 places, 626 transitions, 12986 flow, removed 211 selfloop flow, removed 21 redundant places. [2022-01-19 00:47:58,756 INFO L242 Difference]: Finished difference. Result has 792 places, 526 transitions, 9514 flow [2022-01-19 00:47:58,757 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8920, PETRI_DIFFERENCE_MINUEND_PLACES=732, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9514, PETRI_PLACES=792, PETRI_TRANSITIONS=526} [2022-01-19 00:47:58,757 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 605 predicate places. [2022-01-19 00:47:58,757 INFO L470 AbstractCegarLoop]: Abstraction has has 792 places, 526 transitions, 9514 flow [2022-01-19 00:47:58,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:58,757 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:47:58,757 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:47:58,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable379 [2022-01-19 00:47:58,758 INFO L402 AbstractCegarLoop]: === Iteration 381 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:47:58,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:47:58,758 INFO L85 PathProgramCache]: Analyzing trace with hash 2065512434, now seen corresponding path program 77 times [2022-01-19 00:47:58,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:47:58,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401719053] [2022-01-19 00:47:58,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:47:58,758 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:47:58,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:47:58,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:47:58,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:47:58,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401719053] [2022-01-19 00:47:58,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401719053] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:47:58,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:47:58,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:47:58,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693340208] [2022-01-19 00:47:58,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:47:58,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:47:58,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:47:58,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:47:58,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:47:58,868 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:47:58,868 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 792 places, 526 transitions, 9514 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:47:58,868 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:47:58,868 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:47:58,869 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:48:00,389 INFO L129 PetriNetUnfolder]: 660/2541 cut-off events. [2022-01-19 00:48:00,389 INFO L130 PetriNetUnfolder]: For 104418/104449 co-relation queries the response was YES. [2022-01-19 00:48:00,454 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21884 conditions, 2541 events. 660/2541 cut-off events. For 104418/104449 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 20169 event pairs, 246 based on Foata normal form. 3/2487 useless extension candidates. Maximal degree in co-relation 21516. Up to 461 conditions per place. [2022-01-19 00:48:00,464 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 313 selfloop transitions, 181 changer transitions 90/725 dead transitions. [2022-01-19 00:48:00,464 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 814 places, 725 transitions, 15935 flow [2022-01-19 00:48:00,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-01-19 00:48:00,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-01-19 00:48:00,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7341 transitions. [2022-01-19 00:48:00,467 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7599378881987577 [2022-01-19 00:48:00,467 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7341 transitions. [2022-01-19 00:48:00,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7341 transitions. [2022-01-19 00:48:00,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:48:00,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7341 transitions. [2022-01-19 00:48:00,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.58695652173913) internal successors, (7341), 46 states have internal predecessors, (7341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:00,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:00,476 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:00,476 INFO L186 Difference]: Start difference. First operand has 792 places, 526 transitions, 9514 flow. Second operand 46 states and 7341 transitions. [2022-01-19 00:48:00,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 814 places, 725 transitions, 15935 flow [2022-01-19 00:48:01,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 794 places, 725 transitions, 15369 flow, removed 192 selfloop flow, removed 20 redundant places. [2022-01-19 00:48:01,277 INFO L242 Difference]: Finished difference. Result has 827 places, 552 transitions, 10314 flow [2022-01-19 00:48:01,277 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9156, PETRI_DIFFERENCE_MINUEND_PLACES=749, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=10314, PETRI_PLACES=827, PETRI_TRANSITIONS=552} [2022-01-19 00:48:01,277 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 640 predicate places. [2022-01-19 00:48:01,278 INFO L470 AbstractCegarLoop]: Abstraction has has 827 places, 552 transitions, 10314 flow [2022-01-19 00:48:01,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:01,278 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:48:01,278 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:48:01,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable380 [2022-01-19 00:48:01,278 INFO L402 AbstractCegarLoop]: === Iteration 382 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:48:01,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:48:01,278 INFO L85 PathProgramCache]: Analyzing trace with hash -2116882112, now seen corresponding path program 78 times [2022-01-19 00:48:01,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:48:01,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052439785] [2022-01-19 00:48:01,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:48:01,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:48:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:48:01,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:48:01,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:48:01,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052439785] [2022-01-19 00:48:01,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052439785] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:48:01,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:48:01,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:48:01,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000874396] [2022-01-19 00:48:01,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:48:01,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:48:01,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:48:01,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:48:01,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:48:01,383 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:48:01,384 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 827 places, 552 transitions, 10314 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:01,384 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:48:01,384 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:48:01,384 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:48:02,983 INFO L129 PetriNetUnfolder]: 673/2541 cut-off events. [2022-01-19 00:48:02,984 INFO L130 PetriNetUnfolder]: For 100782/100801 co-relation queries the response was YES. [2022-01-19 00:48:03,050 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21778 conditions, 2541 events. 673/2541 cut-off events. For 100782/100801 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 19966 event pairs, 278 based on Foata normal form. 3/2477 useless extension candidates. Maximal degree in co-relation 21394. Up to 482 conditions per place. [2022-01-19 00:48:03,061 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 336 selfloop transitions, 159 changer transitions 105/741 dead transitions. [2022-01-19 00:48:03,061 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 836 places, 741 transitions, 16708 flow [2022-01-19 00:48:03,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-19 00:48:03,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-01-19 00:48:03,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6867 transitions. [2022-01-19 00:48:03,064 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7604651162790698 [2022-01-19 00:48:03,064 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6867 transitions. [2022-01-19 00:48:03,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6867 transitions. [2022-01-19 00:48:03,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:48:03,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6867 transitions. [2022-01-19 00:48:03,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 159.69767441860466) internal successors, (6867), 43 states have internal predecessors, (6867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:03,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:03,072 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:03,072 INFO L186 Difference]: Start difference. First operand has 827 places, 552 transitions, 10314 flow. Second operand 43 states and 6867 transitions. [2022-01-19 00:48:03,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 836 places, 741 transitions, 16708 flow [2022-01-19 00:48:03,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 808 places, 741 transitions, 16442 flow, removed 89 selfloop flow, removed 28 redundant places. [2022-01-19 00:48:03,878 INFO L242 Difference]: Finished difference. Result has 840 places, 573 transitions, 11389 flow [2022-01-19 00:48:03,879 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10134, PETRI_DIFFERENCE_MINUEND_PLACES=766, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=11389, PETRI_PLACES=840, PETRI_TRANSITIONS=573} [2022-01-19 00:48:03,879 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 653 predicate places. [2022-01-19 00:48:03,879 INFO L470 AbstractCegarLoop]: Abstraction has has 840 places, 573 transitions, 11389 flow [2022-01-19 00:48:03,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:03,879 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:48:03,879 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:48:03,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable381 [2022-01-19 00:48:03,880 INFO L402 AbstractCegarLoop]: === Iteration 383 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:48:03,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:48:03,880 INFO L85 PathProgramCache]: Analyzing trace with hash -51289292, now seen corresponding path program 79 times [2022-01-19 00:48:03,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:48:03,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474532585] [2022-01-19 00:48:03,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:48:03,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:48:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:48:03,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:48:03,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:48:03,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474532585] [2022-01-19 00:48:03,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474532585] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:48:03,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:48:03,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:48:03,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112211790] [2022-01-19 00:48:03,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:48:03,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:48:03,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:48:03,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:48:03,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:48:03,988 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:48:03,989 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 840 places, 573 transitions, 11389 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:03,989 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:48:03,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:48:03,989 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:48:05,653 INFO L129 PetriNetUnfolder]: 687/2587 cut-off events. [2022-01-19 00:48:05,653 INFO L130 PetriNetUnfolder]: For 110117/110140 co-relation queries the response was YES. [2022-01-19 00:48:05,722 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22774 conditions, 2587 events. 687/2587 cut-off events. For 110117/110140 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 20466 event pairs, 311 based on Foata normal form. 3/2516 useless extension candidates. Maximal degree in co-relation 22384. Up to 503 conditions per place. [2022-01-19 00:48:05,733 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 288 selfloop transitions, 196 changer transitions 81/706 dead transitions. [2022-01-19 00:48:05,733 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 854 places, 706 transitions, 15972 flow [2022-01-19 00:48:05,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-01-19 00:48:05,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-01-19 00:48:05,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7187 transitions. [2022-01-19 00:48:05,736 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7605291005291005 [2022-01-19 00:48:05,736 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7187 transitions. [2022-01-19 00:48:05,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7187 transitions. [2022-01-19 00:48:05,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:48:05,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7187 transitions. [2022-01-19 00:48:05,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.7111111111111) internal successors, (7187), 45 states have internal predecessors, (7187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:05,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:05,745 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:05,745 INFO L186 Difference]: Start difference. First operand has 840 places, 573 transitions, 11389 flow. Second operand 45 states and 7187 transitions. [2022-01-19 00:48:05,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 854 places, 706 transitions, 15972 flow [2022-01-19 00:48:06,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 816 places, 706 transitions, 15181 flow, removed 189 selfloop flow, removed 38 redundant places. [2022-01-19 00:48:06,582 INFO L242 Difference]: Finished difference. Result has 850 places, 590 transitions, 11813 flow [2022-01-19 00:48:06,583 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10786, PETRI_DIFFERENCE_MINUEND_PLACES=772, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=11813, PETRI_PLACES=850, PETRI_TRANSITIONS=590} [2022-01-19 00:48:06,583 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 663 predicate places. [2022-01-19 00:48:06,583 INFO L470 AbstractCegarLoop]: Abstraction has has 850 places, 590 transitions, 11813 flow [2022-01-19 00:48:06,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:06,583 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:48:06,583 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:48:06,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable382 [2022-01-19 00:48:06,583 INFO L402 AbstractCegarLoop]: === Iteration 384 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:48:06,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:48:06,584 INFO L85 PathProgramCache]: Analyzing trace with hash 978492314, now seen corresponding path program 80 times [2022-01-19 00:48:06,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:48:06,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651801588] [2022-01-19 00:48:06,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:48:06,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:48:06,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:48:06,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:48:06,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:48:06,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651801588] [2022-01-19 00:48:06,700 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651801588] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:48:06,700 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:48:06,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:48:06,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064819158] [2022-01-19 00:48:06,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:48:06,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:48:06,701 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:48:06,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:48:06,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:48:06,702 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:48:06,703 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 850 places, 590 transitions, 11813 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:06,703 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:48:06,703 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:48:06,703 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:48:08,340 INFO L129 PetriNetUnfolder]: 682/2545 cut-off events. [2022-01-19 00:48:08,340 INFO L130 PetriNetUnfolder]: For 98019/98038 co-relation queries the response was YES. [2022-01-19 00:48:08,408 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22138 conditions, 2545 events. 682/2545 cut-off events. For 98019/98038 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 20006 event pairs, 292 based on Foata normal form. 3/2475 useless extension candidates. Maximal degree in co-relation 21747. Up to 499 conditions per place. [2022-01-19 00:48:08,418 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 349 selfloop transitions, 151 changer transitions 93/734 dead transitions. [2022-01-19 00:48:08,418 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 861 places, 734 transitions, 17069 flow [2022-01-19 00:48:08,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 00:48:08,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 00:48:08,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7032 transitions. [2022-01-19 00:48:08,422 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7610389610389611 [2022-01-19 00:48:08,422 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7032 transitions. [2022-01-19 00:48:08,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7032 transitions. [2022-01-19 00:48:08,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:48:08,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7032 transitions. [2022-01-19 00:48:08,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.8181818181818) internal successors, (7032), 44 states have internal predecessors, (7032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:08,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:08,430 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:08,430 INFO L186 Difference]: Start difference. First operand has 850 places, 590 transitions, 11813 flow. Second operand 44 states and 7032 transitions. [2022-01-19 00:48:08,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 861 places, 734 transitions, 17069 flow [2022-01-19 00:48:09,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 829 places, 734 transitions, 16482 flow, removed 185 selfloop flow, removed 32 redundant places. [2022-01-19 00:48:09,247 INFO L242 Difference]: Finished difference. Result has 861 places, 597 transitions, 12225 flow [2022-01-19 00:48:09,248 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11400, PETRI_DIFFERENCE_MINUEND_PLACES=786, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=12225, PETRI_PLACES=861, PETRI_TRANSITIONS=597} [2022-01-19 00:48:09,249 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 674 predicate places. [2022-01-19 00:48:09,249 INFO L470 AbstractCegarLoop]: Abstraction has has 861 places, 597 transitions, 12225 flow [2022-01-19 00:48:09,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:09,249 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:48:09,249 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:48:09,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable383 [2022-01-19 00:48:09,250 INFO L402 AbstractCegarLoop]: === Iteration 385 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:48:09,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:48:09,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1168002550, now seen corresponding path program 81 times [2022-01-19 00:48:09,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:48:09,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9373857] [2022-01-19 00:48:09,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:48:09,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:48:09,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:48:09,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:48:09,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:48:09,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9373857] [2022-01-19 00:48:09,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9373857] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:48:09,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:48:09,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:48:09,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054711055] [2022-01-19 00:48:09,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:48:09,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:48:09,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:48:09,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:48:09,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:48:09,360 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:48:09,361 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 861 places, 597 transitions, 12225 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:09,361 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:48:09,361 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:48:09,361 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:48:10,866 INFO L129 PetriNetUnfolder]: 677/2618 cut-off events. [2022-01-19 00:48:10,866 INFO L130 PetriNetUnfolder]: For 96046/96054 co-relation queries the response was YES. [2022-01-19 00:48:10,936 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22222 conditions, 2618 events. 677/2618 cut-off events. For 96046/96054 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 20997 event pairs, 307 based on Foata normal form. 1/2543 useless extension candidates. Maximal degree in co-relation 21828. Up to 520 conditions per place. [2022-01-19 00:48:10,946 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 334 selfloop transitions, 165 changer transitions 75/715 dead transitions. [2022-01-19 00:48:10,946 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 865 places, 715 transitions, 16365 flow [2022-01-19 00:48:10,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 00:48:10,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 00:48:10,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5774 transitions. [2022-01-19 00:48:10,949 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7637566137566137 [2022-01-19 00:48:10,949 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5774 transitions. [2022-01-19 00:48:10,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5774 transitions. [2022-01-19 00:48:10,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:48:10,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5774 transitions. [2022-01-19 00:48:10,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.38888888888889) internal successors, (5774), 36 states have internal predecessors, (5774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:10,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:10,956 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:10,956 INFO L186 Difference]: Start difference. First operand has 861 places, 597 transitions, 12225 flow. Second operand 36 states and 5774 transitions. [2022-01-19 00:48:10,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 865 places, 715 transitions, 16365 flow [2022-01-19 00:48:11,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 825 places, 715 transitions, 15626 flow, removed 165 selfloop flow, removed 40 redundant places. [2022-01-19 00:48:11,753 INFO L242 Difference]: Finished difference. Result has 848 places, 613 transitions, 12509 flow [2022-01-19 00:48:11,753 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11592, PETRI_DIFFERENCE_MINUEND_PLACES=790, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=12509, PETRI_PLACES=848, PETRI_TRANSITIONS=613} [2022-01-19 00:48:11,753 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 661 predicate places. [2022-01-19 00:48:11,753 INFO L470 AbstractCegarLoop]: Abstraction has has 848 places, 613 transitions, 12509 flow [2022-01-19 00:48:11,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:11,754 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:48:11,754 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:48:11,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable384 [2022-01-19 00:48:11,754 INFO L402 AbstractCegarLoop]: === Iteration 386 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:48:11,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:48:11,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1386524382, now seen corresponding path program 82 times [2022-01-19 00:48:11,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:48:11,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323450490] [2022-01-19 00:48:11,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:48:11,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:48:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:48:11,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:48:11,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:48:11,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323450490] [2022-01-19 00:48:11,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323450490] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:48:11,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:48:11,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:48:11,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357204596] [2022-01-19 00:48:11,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:48:11,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:48:11,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:48:11,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:48:11,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:48:11,853 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:48:11,854 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 848 places, 613 transitions, 12509 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:11,854 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:48:11,854 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:48:11,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:48:13,380 INFO L129 PetriNetUnfolder]: 680/2595 cut-off events. [2022-01-19 00:48:13,380 INFO L130 PetriNetUnfolder]: For 86784/86792 co-relation queries the response was YES. [2022-01-19 00:48:13,434 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21652 conditions, 2595 events. 680/2595 cut-off events. For 86784/86792 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 20672 event pairs, 286 based on Foata normal form. 1/2519 useless extension candidates. Maximal degree in co-relation 21270. Up to 534 conditions per place. [2022-01-19 00:48:13,443 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 338 selfloop transitions, 182 changer transitions 82/743 dead transitions. [2022-01-19 00:48:13,444 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 860 places, 743 transitions, 16955 flow [2022-01-19 00:48:13,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 00:48:13,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 00:48:13,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5606 transitions. [2022-01-19 00:48:13,446 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7627210884353741 [2022-01-19 00:48:13,446 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5606 transitions. [2022-01-19 00:48:13,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5606 transitions. [2022-01-19 00:48:13,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:48:13,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5606 transitions. [2022-01-19 00:48:13,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.17142857142858) internal successors, (5606), 35 states have internal predecessors, (5606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:13,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:13,453 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:13,453 INFO L186 Difference]: Start difference. First operand has 848 places, 613 transitions, 12509 flow. Second operand 35 states and 5606 transitions. [2022-01-19 00:48:13,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 860 places, 743 transitions, 16955 flow [2022-01-19 00:48:14,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 837 places, 743 transitions, 16424 flow, removed 125 selfloop flow, removed 23 redundant places. [2022-01-19 00:48:14,178 INFO L242 Difference]: Finished difference. Result has 859 places, 626 transitions, 12945 flow [2022-01-19 00:48:14,179 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12095, PETRI_DIFFERENCE_MINUEND_PLACES=803, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=12945, PETRI_PLACES=859, PETRI_TRANSITIONS=626} [2022-01-19 00:48:14,179 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 672 predicate places. [2022-01-19 00:48:14,179 INFO L470 AbstractCegarLoop]: Abstraction has has 859 places, 626 transitions, 12945 flow [2022-01-19 00:48:14,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:14,179 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:48:14,179 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:48:14,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable385 [2022-01-19 00:48:14,180 INFO L402 AbstractCegarLoop]: === Iteration 387 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:48:14,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:48:14,180 INFO L85 PathProgramCache]: Analyzing trace with hash -391632668, now seen corresponding path program 83 times [2022-01-19 00:48:14,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:48:14,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486448490] [2022-01-19 00:48:14,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:48:14,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:48:14,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:48:14,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:48:14,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:48:14,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486448490] [2022-01-19 00:48:14,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486448490] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:48:14,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:48:14,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:48:14,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001239875] [2022-01-19 00:48:14,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:48:14,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:48:14,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:48:14,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:48:14,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:48:14,278 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:48:14,279 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 859 places, 626 transitions, 12945 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:14,279 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:48:14,279 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:48:14,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:48:15,786 INFO L129 PetriNetUnfolder]: 706/2716 cut-off events. [2022-01-19 00:48:15,787 INFO L130 PetriNetUnfolder]: For 91007/91017 co-relation queries the response was YES. [2022-01-19 00:48:15,859 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22732 conditions, 2716 events. 706/2716 cut-off events. For 91007/91017 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 22015 event pairs, 294 based on Foata normal form. 1/2644 useless extension candidates. Maximal degree in co-relation 22346. Up to 548 conditions per place. [2022-01-19 00:48:15,871 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 345 selfloop transitions, 198 changer transitions 75/759 dead transitions. [2022-01-19 00:48:15,871 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 875 places, 759 transitions, 17563 flow [2022-01-19 00:48:15,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:48:15,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:48:15,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6083 transitions. [2022-01-19 00:48:15,873 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.762280701754386 [2022-01-19 00:48:15,873 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6083 transitions. [2022-01-19 00:48:15,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6083 transitions. [2022-01-19 00:48:15,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:48:15,874 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6083 transitions. [2022-01-19 00:48:15,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.07894736842104) internal successors, (6083), 38 states have internal predecessors, (6083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:15,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:15,881 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:15,881 INFO L186 Difference]: Start difference. First operand has 859 places, 626 transitions, 12945 flow. Second operand 38 states and 6083 transitions. [2022-01-19 00:48:15,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 875 places, 759 transitions, 17563 flow [2022-01-19 00:48:16,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 848 places, 759 transitions, 16847 flow, removed 136 selfloop flow, removed 27 redundant places. [2022-01-19 00:48:16,663 INFO L242 Difference]: Finished difference. Result has 871 places, 646 transitions, 13490 flow [2022-01-19 00:48:16,663 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12369, PETRI_DIFFERENCE_MINUEND_PLACES=811, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=13490, PETRI_PLACES=871, PETRI_TRANSITIONS=646} [2022-01-19 00:48:16,664 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 684 predicate places. [2022-01-19 00:48:16,664 INFO L470 AbstractCegarLoop]: Abstraction has has 871 places, 646 transitions, 13490 flow [2022-01-19 00:48:16,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:16,664 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:48:16,664 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:48:16,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable386 [2022-01-19 00:48:16,664 INFO L402 AbstractCegarLoop]: === Iteration 388 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:48:16,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:48:16,664 INFO L85 PathProgramCache]: Analyzing trace with hash 127120358, now seen corresponding path program 84 times [2022-01-19 00:48:16,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:48:16,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900464113] [2022-01-19 00:48:16,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:48:16,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:48:16,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:48:16,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:48:16,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:48:16,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900464113] [2022-01-19 00:48:16,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900464113] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:48:16,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:48:16,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:48:16,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10691507] [2022-01-19 00:48:16,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:48:16,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:48:16,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:48:16,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:48:16,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:48:16,769 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:48:16,770 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 871 places, 646 transitions, 13490 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:16,770 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:48:16,770 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:48:16,770 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:48:18,355 INFO L129 PetriNetUnfolder]: 701/2680 cut-off events. [2022-01-19 00:48:18,356 INFO L130 PetriNetUnfolder]: For 86640/86659 co-relation queries the response was YES. [2022-01-19 00:48:18,427 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22443 conditions, 2680 events. 701/2680 cut-off events. For 86640/86659 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 21622 event pairs, 308 based on Foata normal form. 3/2605 useless extension candidates. Maximal degree in co-relation 22055. Up to 545 conditions per place. [2022-01-19 00:48:18,438 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 337 selfloop transitions, 194 changer transitions 71/743 dead transitions. [2022-01-19 00:48:18,438 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 883 places, 743 transitions, 17182 flow [2022-01-19 00:48:18,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 00:48:18,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 00:48:18,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5929 transitions. [2022-01-19 00:48:18,441 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763063063063063 [2022-01-19 00:48:18,441 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5929 transitions. [2022-01-19 00:48:18,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5929 transitions. [2022-01-19 00:48:18,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:48:18,442 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5929 transitions. [2022-01-19 00:48:18,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.24324324324326) internal successors, (5929), 37 states have internal predecessors, (5929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:18,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:18,448 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:18,448 INFO L186 Difference]: Start difference. First operand has 871 places, 646 transitions, 13490 flow. Second operand 37 states and 5929 transitions. [2022-01-19 00:48:18,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 883 places, 743 transitions, 17182 flow [2022-01-19 00:48:19,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 864 places, 743 transitions, 16740 flow, removed 124 selfloop flow, removed 19 redundant places. [2022-01-19 00:48:19,221 INFO L242 Difference]: Finished difference. Result has 887 places, 649 transitions, 13800 flow [2022-01-19 00:48:19,221 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13182, PETRI_DIFFERENCE_MINUEND_PLACES=828, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=646, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=453, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=13800, PETRI_PLACES=887, PETRI_TRANSITIONS=649} [2022-01-19 00:48:19,221 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 700 predicate places. [2022-01-19 00:48:19,221 INFO L470 AbstractCegarLoop]: Abstraction has has 887 places, 649 transitions, 13800 flow [2022-01-19 00:48:19,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:19,222 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:48:19,222 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:48:19,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable387 [2022-01-19 00:48:19,222 INFO L402 AbstractCegarLoop]: === Iteration 389 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:48:19,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:48:19,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1548416900, now seen corresponding path program 85 times [2022-01-19 00:48:19,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:48:19,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339995265] [2022-01-19 00:48:19,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:48:19,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:48:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:48:19,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:48:19,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:48:19,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339995265] [2022-01-19 00:48:19,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339995265] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:48:19,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:48:19,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:48:19,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760779499] [2022-01-19 00:48:19,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:48:19,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:48:19,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:48:19,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:48:19,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:48:19,324 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:48:19,325 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 887 places, 649 transitions, 13800 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:19,325 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:48:19,325 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:48:19,325 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:48:20,936 INFO L129 PetriNetUnfolder]: 726/2777 cut-off events. [2022-01-19 00:48:20,936 INFO L130 PetriNetUnfolder]: For 91664/91672 co-relation queries the response was YES. [2022-01-19 00:48:21,013 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23469 conditions, 2777 events. 726/2777 cut-off events. For 91664/91672 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 22660 event pairs, 321 based on Foata normal form. 1/2700 useless extension candidates. Maximal degree in co-relation 23074. Up to 559 conditions per place. [2022-01-19 00:48:21,024 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 375 selfloop transitions, 178 changer transitions 69/763 dead transitions. [2022-01-19 00:48:21,024 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 900 places, 763 transitions, 17828 flow [2022-01-19 00:48:21,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 00:48:21,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 00:48:21,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5933 transitions. [2022-01-19 00:48:21,027 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635778635778636 [2022-01-19 00:48:21,027 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5933 transitions. [2022-01-19 00:48:21,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5933 transitions. [2022-01-19 00:48:21,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:48:21,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5933 transitions. [2022-01-19 00:48:21,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.35135135135135) internal successors, (5933), 37 states have internal predecessors, (5933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:21,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:21,034 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:21,034 INFO L186 Difference]: Start difference. First operand has 887 places, 649 transitions, 13800 flow. Second operand 37 states and 5933 transitions. [2022-01-19 00:48:21,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 900 places, 763 transitions, 17828 flow [2022-01-19 00:48:21,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 876 places, 763 transitions, 17314 flow, removed 101 selfloop flow, removed 24 redundant places. [2022-01-19 00:48:21,845 INFO L242 Difference]: Finished difference. Result has 900 places, 668 transitions, 14356 flow [2022-01-19 00:48:21,845 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13350, PETRI_DIFFERENCE_MINUEND_PLACES=840, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=14356, PETRI_PLACES=900, PETRI_TRANSITIONS=668} [2022-01-19 00:48:21,846 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 713 predicate places. [2022-01-19 00:48:21,846 INFO L470 AbstractCegarLoop]: Abstraction has has 900 places, 668 transitions, 14356 flow [2022-01-19 00:48:21,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:21,846 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:48:21,846 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:48:21,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable388 [2022-01-19 00:48:21,846 INFO L402 AbstractCegarLoop]: === Iteration 390 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:48:21,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:48:21,846 INFO L85 PathProgramCache]: Analyzing trace with hash -73514740, now seen corresponding path program 86 times [2022-01-19 00:48:21,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:48:21,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205519881] [2022-01-19 00:48:21,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:48:21,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:48:21,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:48:21,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:48:21,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:48:21,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205519881] [2022-01-19 00:48:21,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205519881] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:48:21,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:48:21,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:48:21,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699479244] [2022-01-19 00:48:21,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:48:21,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:48:21,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:48:21,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:48:21,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:48:21,950 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:48:21,950 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 900 places, 668 transitions, 14356 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:21,950 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:48:21,950 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:48:21,950 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:48:23,580 INFO L129 PetriNetUnfolder]: 722/2771 cut-off events. [2022-01-19 00:48:23,581 INFO L130 PetriNetUnfolder]: For 93243/93268 co-relation queries the response was YES. [2022-01-19 00:48:23,658 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23437 conditions, 2771 events. 722/2771 cut-off events. For 93243/93268 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 22602 event pairs, 265 based on Foata normal form. 3/2709 useless extension candidates. Maximal degree in co-relation 23038. Up to 556 conditions per place. [2022-01-19 00:48:23,669 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 361 selfloop transitions, 227 changer transitions 80/809 dead transitions. [2022-01-19 00:48:23,670 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 914 places, 809 transitions, 19315 flow [2022-01-19 00:48:23,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:48:23,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:48:23,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6079 transitions. [2022-01-19 00:48:23,672 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617794486215539 [2022-01-19 00:48:23,672 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6079 transitions. [2022-01-19 00:48:23,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6079 transitions. [2022-01-19 00:48:23,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:48:23,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6079 transitions. [2022-01-19 00:48:23,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.97368421052633) internal successors, (6079), 38 states have internal predecessors, (6079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:23,679 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:23,680 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:23,680 INFO L186 Difference]: Start difference. First operand has 900 places, 668 transitions, 14356 flow. Second operand 38 states and 6079 transitions. [2022-01-19 00:48:23,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 914 places, 809 transitions, 19315 flow [2022-01-19 00:48:24,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 893 places, 809 transitions, 18893 flow, removed 101 selfloop flow, removed 21 redundant places. [2022-01-19 00:48:24,532 INFO L242 Difference]: Finished difference. Result has 916 places, 675 transitions, 14863 flow [2022-01-19 00:48:24,532 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14018, PETRI_DIFFERENCE_MINUEND_PLACES=856, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=14863, PETRI_PLACES=916, PETRI_TRANSITIONS=675} [2022-01-19 00:48:24,532 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 729 predicate places. [2022-01-19 00:48:24,533 INFO L470 AbstractCegarLoop]: Abstraction has has 916 places, 675 transitions, 14863 flow [2022-01-19 00:48:24,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:24,533 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:48:24,533 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:48:24,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable389 [2022-01-19 00:48:24,533 INFO L402 AbstractCegarLoop]: === Iteration 391 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:48:24,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:48:24,533 INFO L85 PathProgramCache]: Analyzing trace with hash -630641100, now seen corresponding path program 87 times [2022-01-19 00:48:24,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:48:24,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980239290] [2022-01-19 00:48:24,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:48:24,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:48:24,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:48:24,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:48:24,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:48:24,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980239290] [2022-01-19 00:48:24,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980239290] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:48:24,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:48:24,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:48:24,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089575833] [2022-01-19 00:48:24,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:48:24,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:48:24,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:48:24,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:48:24,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:48:24,641 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:48:24,642 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 916 places, 675 transitions, 14863 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:24,642 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:48:24,642 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:48:24,642 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:48:26,379 INFO L129 PetriNetUnfolder]: 730/2798 cut-off events. [2022-01-19 00:48:26,379 INFO L130 PetriNetUnfolder]: For 93582/93590 co-relation queries the response was YES. [2022-01-19 00:48:26,441 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23778 conditions, 2798 events. 730/2798 cut-off events. For 93582/93590 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 22888 event pairs, 308 based on Foata normal form. 1/2724 useless extension candidates. Maximal degree in co-relation 23373. Up to 570 conditions per place. [2022-01-19 00:48:26,451 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 391 selfloop transitions, 187 changer transitions 77/796 dead transitions. [2022-01-19 00:48:26,451 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 927 places, 796 transitions, 19325 flow [2022-01-19 00:48:26,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-19 00:48:26,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-01-19 00:48:26,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5770 transitions. [2022-01-19 00:48:26,454 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7632275132275133 [2022-01-19 00:48:26,454 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5770 transitions. [2022-01-19 00:48:26,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5770 transitions. [2022-01-19 00:48:26,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:48:26,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5770 transitions. [2022-01-19 00:48:26,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.27777777777777) internal successors, (5770), 36 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:26,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:26,461 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:26,461 INFO L186 Difference]: Start difference. First operand has 916 places, 675 transitions, 14863 flow. Second operand 36 states and 5770 transitions. [2022-01-19 00:48:26,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 927 places, 796 transitions, 19325 flow [2022-01-19 00:48:27,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 906 places, 796 transitions, 18961 flow, removed 97 selfloop flow, removed 21 redundant places. [2022-01-19 00:48:27,305 INFO L242 Difference]: Finished difference. Result has 929 places, 691 transitions, 15569 flow [2022-01-19 00:48:27,306 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14579, PETRI_DIFFERENCE_MINUEND_PLACES=871, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=499, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=15569, PETRI_PLACES=929, PETRI_TRANSITIONS=691} [2022-01-19 00:48:27,306 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 742 predicate places. [2022-01-19 00:48:27,306 INFO L470 AbstractCegarLoop]: Abstraction has has 929 places, 691 transitions, 15569 flow [2022-01-19 00:48:27,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:27,306 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:48:27,306 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:48:27,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable390 [2022-01-19 00:48:27,307 INFO L402 AbstractCegarLoop]: === Iteration 392 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:48:27,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:48:27,307 INFO L85 PathProgramCache]: Analyzing trace with hash 808933784, now seen corresponding path program 88 times [2022-01-19 00:48:27,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:48:27,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391256470] [2022-01-19 00:48:27,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:48:27,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:48:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:48:27,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:48:27,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:48:27,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391256470] [2022-01-19 00:48:27,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391256470] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:48:27,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:48:27,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:48:27,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875545854] [2022-01-19 00:48:27,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:48:27,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:48:27,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:48:27,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:48:27,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:48:27,407 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:48:27,408 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 929 places, 691 transitions, 15569 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:27,408 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:48:27,408 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:48:27,408 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:48:29,026 INFO L129 PetriNetUnfolder]: 724/2809 cut-off events. [2022-01-19 00:48:29,027 INFO L130 PetriNetUnfolder]: For 94819/94827 co-relation queries the response was YES. [2022-01-19 00:48:29,105 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23872 conditions, 2809 events. 724/2809 cut-off events. For 94819/94827 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 23036 event pairs, 302 based on Foata normal form. 1/2740 useless extension candidates. Maximal degree in co-relation 23462. Up to 567 conditions per place. [2022-01-19 00:48:29,115 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 404 selfloop transitions, 182 changer transitions 74/801 dead transitions. [2022-01-19 00:48:29,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 944 places, 801 transitions, 19835 flow [2022-01-19 00:48:29,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:48:29,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:48:29,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6087 transitions. [2022-01-19 00:48:29,118 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.762781954887218 [2022-01-19 00:48:29,118 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6087 transitions. [2022-01-19 00:48:29,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6087 transitions. [2022-01-19 00:48:29,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:48:29,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6087 transitions. [2022-01-19 00:48:29,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.18421052631578) internal successors, (6087), 38 states have internal predecessors, (6087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:29,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:29,126 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:29,126 INFO L186 Difference]: Start difference. First operand has 929 places, 691 transitions, 15569 flow. Second operand 38 states and 6087 transitions. [2022-01-19 00:48:29,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 944 places, 801 transitions, 19835 flow [2022-01-19 00:48:30,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 920 places, 801 transitions, 19246 flow, removed 130 selfloop flow, removed 24 redundant places. [2022-01-19 00:48:30,017 INFO L242 Difference]: Finished difference. Result has 943 places, 696 transitions, 15799 flow [2022-01-19 00:48:30,017 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15109, PETRI_DIFFERENCE_MINUEND_PLACES=883, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=512, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=15799, PETRI_PLACES=943, PETRI_TRANSITIONS=696} [2022-01-19 00:48:30,018 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 756 predicate places. [2022-01-19 00:48:30,018 INFO L470 AbstractCegarLoop]: Abstraction has has 943 places, 696 transitions, 15799 flow [2022-01-19 00:48:30,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:30,018 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:48:30,018 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:48:30,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable391 [2022-01-19 00:48:30,018 INFO L402 AbstractCegarLoop]: === Iteration 393 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:48:30,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:48:30,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1829562648, now seen corresponding path program 89 times [2022-01-19 00:48:30,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:48:30,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587184103] [2022-01-19 00:48:30,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:48:30,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:48:30,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:48:30,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:48:30,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:48:30,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587184103] [2022-01-19 00:48:30,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587184103] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:48:30,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:48:30,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:48:30,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179458094] [2022-01-19 00:48:30,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:48:30,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:48:30,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:48:30,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:48:30,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:48:30,120 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:48:30,120 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 943 places, 696 transitions, 15799 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:30,120 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:48:30,121 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:48:30,121 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:48:31,792 INFO L129 PetriNetUnfolder]: 749/2856 cut-off events. [2022-01-19 00:48:31,792 INFO L130 PetriNetUnfolder]: For 97212/97233 co-relation queries the response was YES. [2022-01-19 00:48:31,872 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24645 conditions, 2856 events. 749/2856 cut-off events. For 97212/97233 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 23557 event pairs, 313 based on Foata normal form. 3/2784 useless extension candidates. Maximal degree in co-relation 24231. Up to 581 conditions per place. [2022-01-19 00:48:31,883 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 374 selfloop transitions, 227 changer transitions 69/811 dead transitions. [2022-01-19 00:48:31,884 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 956 places, 811 transitions, 20157 flow [2022-01-19 00:48:31,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 00:48:31,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 00:48:31,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6085 transitions. [2022-01-19 00:48:31,886 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625313283208021 [2022-01-19 00:48:31,886 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6085 transitions. [2022-01-19 00:48:31,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6085 transitions. [2022-01-19 00:48:31,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:48:31,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6085 transitions. [2022-01-19 00:48:31,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.1315789473684) internal successors, (6085), 38 states have internal predecessors, (6085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:31,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:31,893 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:31,893 INFO L186 Difference]: Start difference. First operand has 943 places, 696 transitions, 15799 flow. Second operand 38 states and 6085 transitions. [2022-01-19 00:48:31,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 956 places, 811 transitions, 20157 flow [2022-01-19 00:48:32,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 935 places, 811 transitions, 19717 flow, removed 106 selfloop flow, removed 21 redundant places. [2022-01-19 00:48:32,809 INFO L242 Difference]: Finished difference. Result has 959 places, 715 transitions, 16596 flow [2022-01-19 00:48:32,809 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15435, PETRI_DIFFERENCE_MINUEND_PLACES=898, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=16596, PETRI_PLACES=959, PETRI_TRANSITIONS=715} [2022-01-19 00:48:32,809 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 772 predicate places. [2022-01-19 00:48:32,809 INFO L470 AbstractCegarLoop]: Abstraction has has 959 places, 715 transitions, 16596 flow [2022-01-19 00:48:32,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:32,810 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:48:32,810 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:48:32,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable392 [2022-01-19 00:48:32,810 INFO L402 AbstractCegarLoop]: === Iteration 394 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:48:32,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:48:32,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1544985142, now seen corresponding path program 90 times [2022-01-19 00:48:32,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:48:32,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245694285] [2022-01-19 00:48:32,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:48:32,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:48:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:48:32,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:48:32,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:48:32,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245694285] [2022-01-19 00:48:32,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245694285] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:48:32,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:48:32,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:48:32,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219584642] [2022-01-19 00:48:32,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:48:32,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:48:32,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:48:32,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:48:32,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:48:32,910 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:48:32,911 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 959 places, 715 transitions, 16596 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:32,911 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:48:32,911 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:48:32,911 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:48:34,564 INFO L129 PetriNetUnfolder]: 745/2874 cut-off events. [2022-01-19 00:48:34,565 INFO L130 PetriNetUnfolder]: For 97375/97383 co-relation queries the response was YES. [2022-01-19 00:48:34,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24728 conditions, 2874 events. 745/2874 cut-off events. For 97375/97383 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 23756 event pairs, 315 based on Foata normal form. 1/2803 useless extension candidates. Maximal degree in co-relation 24308. Up to 578 conditions per place. [2022-01-19 00:48:34,658 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 368 selfloop transitions, 231 changer transitions 71/811 dead transitions. [2022-01-19 00:48:34,658 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 971 places, 811 transitions, 20490 flow [2022-01-19 00:48:34,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 00:48:34,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 00:48:34,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5925 transitions. [2022-01-19 00:48:34,661 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625482625482626 [2022-01-19 00:48:34,661 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5925 transitions. [2022-01-19 00:48:34,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5925 transitions. [2022-01-19 00:48:34,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:48:34,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5925 transitions. [2022-01-19 00:48:34,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.13513513513513) internal successors, (5925), 37 states have internal predecessors, (5925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:34,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:34,667 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:34,668 INFO L186 Difference]: Start difference. First operand has 959 places, 715 transitions, 16596 flow. Second operand 37 states and 5925 transitions. [2022-01-19 00:48:34,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 971 places, 811 transitions, 20490 flow [2022-01-19 00:48:35,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 951 places, 811 transitions, 19992 flow, removed 143 selfloop flow, removed 20 redundant places. [2022-01-19 00:48:35,623 INFO L242 Difference]: Finished difference. Result has 973 places, 717 transitions, 16878 flow [2022-01-19 00:48:35,624 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16236, PETRI_DIFFERENCE_MINUEND_PLACES=915, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=715, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=226, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=16878, PETRI_PLACES=973, PETRI_TRANSITIONS=717} [2022-01-19 00:48:35,624 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 786 predicate places. [2022-01-19 00:48:35,624 INFO L470 AbstractCegarLoop]: Abstraction has has 973 places, 717 transitions, 16878 flow [2022-01-19 00:48:35,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:35,624 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:48:35,624 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:48:35,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable393 [2022-01-19 00:48:35,625 INFO L402 AbstractCegarLoop]: === Iteration 395 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:48:35,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:48:35,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1511538956, now seen corresponding path program 91 times [2022-01-19 00:48:35,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:48:35,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793575760] [2022-01-19 00:48:35,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:48:35,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:48:35,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:48:35,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:48:35,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:48:35,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793575760] [2022-01-19 00:48:35,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793575760] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:48:35,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:48:35,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:48:35,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703848720] [2022-01-19 00:48:35,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:48:35,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:48:35,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:48:35,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:48:35,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:48:35,725 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:48:35,726 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 973 places, 717 transitions, 16878 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:35,726 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:48:35,726 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:48:35,726 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:48:37,328 INFO L129 PetriNetUnfolder]: 748/2892 cut-off events. [2022-01-19 00:48:37,328 INFO L130 PetriNetUnfolder]: For 95647/95655 co-relation queries the response was YES. [2022-01-19 00:48:37,411 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24946 conditions, 2892 events. 748/2892 cut-off events. For 95647/95655 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 23934 event pairs, 321 based on Foata normal form. 1/2822 useless extension candidates. Maximal degree in co-relation 24521. Up to 593 conditions per place. [2022-01-19 00:48:37,422 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 395 selfloop transitions, 207 changer transitions 59/802 dead transitions. [2022-01-19 00:48:37,422 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 979 places, 802 transitions, 20377 flow [2022-01-19 00:48:37,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:48:37,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:48:37,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4825 transitions. [2022-01-19 00:48:37,425 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658730158730159 [2022-01-19 00:48:37,425 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4825 transitions. [2022-01-19 00:48:37,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4825 transitions. [2022-01-19 00:48:37,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:48:37,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4825 transitions. [2022-01-19 00:48:37,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.83333333333334) internal successors, (4825), 30 states have internal predecessors, (4825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:37,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:37,431 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:37,431 INFO L186 Difference]: Start difference. First operand has 973 places, 717 transitions, 16878 flow. Second operand 30 states and 4825 transitions. [2022-01-19 00:48:37,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 979 places, 802 transitions, 20377 flow [2022-01-19 00:48:38,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 942 places, 802 transitions, 19751 flow, removed 91 selfloop flow, removed 37 redundant places. [2022-01-19 00:48:38,380 INFO L242 Difference]: Finished difference. Result has 955 places, 730 transitions, 17190 flow [2022-01-19 00:48:38,380 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16319, PETRI_DIFFERENCE_MINUEND_PLACES=913, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=717, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17190, PETRI_PLACES=955, PETRI_TRANSITIONS=730} [2022-01-19 00:48:38,380 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 768 predicate places. [2022-01-19 00:48:38,380 INFO L470 AbstractCegarLoop]: Abstraction has has 955 places, 730 transitions, 17190 flow [2022-01-19 00:48:38,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:38,381 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:48:38,381 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:48:38,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable394 [2022-01-19 00:48:38,381 INFO L402 AbstractCegarLoop]: === Iteration 396 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:48:38,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:48:38,381 INFO L85 PathProgramCache]: Analyzing trace with hash 673035828, now seen corresponding path program 92 times [2022-01-19 00:48:38,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:48:38,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966320200] [2022-01-19 00:48:38,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:48:38,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:48:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:48:38,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:48:38,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:48:38,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966320200] [2022-01-19 00:48:38,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966320200] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:48:38,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:48:38,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:48:38,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672195375] [2022-01-19 00:48:38,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:48:38,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:48:38,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:48:38,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:48:38,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:48:38,483 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:48:38,483 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 955 places, 730 transitions, 17190 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:38,483 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:48:38,483 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:48:38,483 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:48:40,061 INFO L129 PetriNetUnfolder]: 753/2890 cut-off events. [2022-01-19 00:48:40,062 INFO L130 PetriNetUnfolder]: For 94498/94517 co-relation queries the response was YES. [2022-01-19 00:48:40,136 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24964 conditions, 2890 events. 753/2890 cut-off events. For 94498/94517 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 23887 event pairs, 315 based on Foata normal form. 3/2819 useless extension candidates. Maximal degree in co-relation 24559. Up to 595 conditions per place. [2022-01-19 00:48:40,148 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 375 selfloop transitions, 239 changer transitions 58/813 dead transitions. [2022-01-19 00:48:40,148 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 969 places, 813 transitions, 20724 flow [2022-01-19 00:48:40,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:48:40,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:48:40,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4819 transitions. [2022-01-19 00:48:40,150 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7649206349206349 [2022-01-19 00:48:40,150 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4819 transitions. [2022-01-19 00:48:40,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4819 transitions. [2022-01-19 00:48:40,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:48:40,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4819 transitions. [2022-01-19 00:48:40,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.63333333333333) internal successors, (4819), 30 states have internal predecessors, (4819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:40,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:40,156 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:40,156 INFO L186 Difference]: Start difference. First operand has 955 places, 730 transitions, 17190 flow. Second operand 30 states and 4819 transitions. [2022-01-19 00:48:40,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 969 places, 813 transitions, 20724 flow [2022-01-19 00:48:41,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 957 places, 813 transitions, 20327 flow, removed 62 selfloop flow, removed 12 redundant places. [2022-01-19 00:48:41,113 INFO L242 Difference]: Finished difference. Result has 970 places, 743 transitions, 17792 flow [2022-01-19 00:48:41,113 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16839, PETRI_DIFFERENCE_MINUEND_PLACES=928, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17792, PETRI_PLACES=970, PETRI_TRANSITIONS=743} [2022-01-19 00:48:41,113 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 783 predicate places. [2022-01-19 00:48:41,113 INFO L470 AbstractCegarLoop]: Abstraction has has 970 places, 743 transitions, 17792 flow [2022-01-19 00:48:41,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:41,114 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:48:41,114 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:48:41,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable395 [2022-01-19 00:48:41,114 INFO L402 AbstractCegarLoop]: === Iteration 397 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:48:41,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:48:41,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1505201588, now seen corresponding path program 93 times [2022-01-19 00:48:41,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:48:41,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817404569] [2022-01-19 00:48:41,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:48:41,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:48:41,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:48:41,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:48:41,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:48:41,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817404569] [2022-01-19 00:48:41,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817404569] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:48:41,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:48:41,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:48:41,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823717622] [2022-01-19 00:48:41,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:48:41,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:48:41,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:48:41,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:48:41,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:48:41,217 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:48:41,218 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 970 places, 743 transitions, 17792 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:41,218 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:48:41,218 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:48:41,218 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:48:42,804 INFO L129 PetriNetUnfolder]: 748/2899 cut-off events. [2022-01-19 00:48:42,805 INFO L130 PetriNetUnfolder]: For 96369/96377 co-relation queries the response was YES. [2022-01-19 00:48:42,885 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24940 conditions, 2899 events. 748/2899 cut-off events. For 96369/96377 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 24010 event pairs, 276 based on Foata normal form. 1/2840 useless extension candidates. Maximal degree in co-relation 24530. Up to 595 conditions per place. [2022-01-19 00:48:42,897 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 390 selfloop transitions, 253 changer transitions 69/853 dead transitions. [2022-01-19 00:48:42,897 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 984 places, 853 transitions, 22098 flow [2022-01-19 00:48:42,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:48:42,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:48:42,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4815 transitions. [2022-01-19 00:48:42,900 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2022-01-19 00:48:42,900 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4815 transitions. [2022-01-19 00:48:42,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4815 transitions. [2022-01-19 00:48:42,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:48:42,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4815 transitions. [2022-01-19 00:48:42,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.5) internal successors, (4815), 30 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:42,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:42,905 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:42,905 INFO L186 Difference]: Start difference. First operand has 970 places, 743 transitions, 17792 flow. Second operand 30 states and 4815 transitions. [2022-01-19 00:48:42,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 984 places, 853 transitions, 22098 flow [2022-01-19 00:48:43,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 972 places, 853 transitions, 21700 flow, removed 75 selfloop flow, removed 12 redundant places. [2022-01-19 00:48:43,890 INFO L242 Difference]: Finished difference. Result has 985 places, 749 transitions, 18195 flow [2022-01-19 00:48:43,890 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17448, PETRI_DIFFERENCE_MINUEND_PLACES=943, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=743, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=245, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=18195, PETRI_PLACES=985, PETRI_TRANSITIONS=749} [2022-01-19 00:48:43,890 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 798 predicate places. [2022-01-19 00:48:43,891 INFO L470 AbstractCegarLoop]: Abstraction has has 985 places, 749 transitions, 18195 flow [2022-01-19 00:48:43,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:43,891 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:48:43,891 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:48:43,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable396 [2022-01-19 00:48:43,891 INFO L402 AbstractCegarLoop]: === Iteration 398 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:48:43,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:48:43,891 INFO L85 PathProgramCache]: Analyzing trace with hash 284993566, now seen corresponding path program 94 times [2022-01-19 00:48:43,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:48:43,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481472078] [2022-01-19 00:48:43,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:48:43,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:48:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:48:43,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:48:43,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:48:43,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481472078] [2022-01-19 00:48:43,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481472078] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:48:43,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:48:43,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:48:43,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479640143] [2022-01-19 00:48:43,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:48:43,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:48:43,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:48:43,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:48:43,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:48:43,994 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:48:43,994 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 985 places, 749 transitions, 18195 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:43,994 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:48:43,994 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:48:43,994 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:48:45,596 INFO L129 PetriNetUnfolder]: 749/2901 cut-off events. [2022-01-19 00:48:45,596 INFO L130 PetriNetUnfolder]: For 100078/100086 co-relation queries the response was YES. [2022-01-19 00:48:45,678 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25290 conditions, 2901 events. 749/2901 cut-off events. For 100078/100086 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 24063 event pairs, 309 based on Foata normal form. 1/2832 useless extension candidates. Maximal degree in co-relation 24875. Up to 595 conditions per place. [2022-01-19 00:48:45,690 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 416 selfloop transitions, 214 changer transitions 60/831 dead transitions. [2022-01-19 00:48:45,690 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 999 places, 831 transitions, 21837 flow [2022-01-19 00:48:45,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:48:45,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:48:45,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4821 transitions. [2022-01-19 00:48:45,692 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7652380952380953 [2022-01-19 00:48:45,692 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4821 transitions. [2022-01-19 00:48:45,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4821 transitions. [2022-01-19 00:48:45,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:48:45,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4821 transitions. [2022-01-19 00:48:45,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.7) internal successors, (4821), 30 states have internal predecessors, (4821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:45,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:45,698 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:45,698 INFO L186 Difference]: Start difference. First operand has 985 places, 749 transitions, 18195 flow. Second operand 30 states and 4821 transitions. [2022-01-19 00:48:45,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 999 places, 831 transitions, 21837 flow [2022-01-19 00:48:46,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 987 places, 831 transitions, 21490 flow, removed 83 selfloop flow, removed 12 redundant places. [2022-01-19 00:48:46,690 INFO L242 Difference]: Finished difference. Result has 1000 places, 760 transitions, 18760 flow [2022-01-19 00:48:46,690 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17887, PETRI_DIFFERENCE_MINUEND_PLACES=958, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=749, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=18760, PETRI_PLACES=1000, PETRI_TRANSITIONS=760} [2022-01-19 00:48:46,691 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 813 predicate places. [2022-01-19 00:48:46,691 INFO L470 AbstractCegarLoop]: Abstraction has has 1000 places, 760 transitions, 18760 flow [2022-01-19 00:48:46,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:46,691 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:48:46,691 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:48:46,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable397 [2022-01-19 00:48:46,691 INFO L402 AbstractCegarLoop]: === Iteration 399 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:48:46,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:48:46,692 INFO L85 PathProgramCache]: Analyzing trace with hash -939614796, now seen corresponding path program 95 times [2022-01-19 00:48:46,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:48:46,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503944517] [2022-01-19 00:48:46,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:48:46,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:48:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:48:46,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:48:46,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:48:46,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503944517] [2022-01-19 00:48:46,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503944517] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:48:46,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:48:46,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:48:46,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067228821] [2022-01-19 00:48:46,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:48:46,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:48:46,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:48:46,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:48:46,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:48:46,792 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:48:46,793 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1000 places, 760 transitions, 18760 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:46,793 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:48:46,793 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:48:46,793 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:48:48,394 INFO L129 PetriNetUnfolder]: 745/2876 cut-off events. [2022-01-19 00:48:48,394 INFO L130 PetriNetUnfolder]: For 100282/100290 co-relation queries the response was YES. [2022-01-19 00:48:48,476 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25224 conditions, 2876 events. 745/2876 cut-off events. For 100282/100290 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 23744 event pairs, 310 based on Foata normal form. 1/2805 useless extension candidates. Maximal degree in co-relation 24805. Up to 595 conditions per place. [2022-01-19 00:48:48,488 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 390 selfloop transitions, 245 changer transitions 60/836 dead transitions. [2022-01-19 00:48:48,488 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1013 places, 836 transitions, 22198 flow [2022-01-19 00:48:48,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:48:48,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:48:48,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4661 transitions. [2022-01-19 00:48:48,490 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7653530377668308 [2022-01-19 00:48:48,490 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4661 transitions. [2022-01-19 00:48:48,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4661 transitions. [2022-01-19 00:48:48,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:48:48,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4661 transitions. [2022-01-19 00:48:48,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.72413793103448) internal successors, (4661), 29 states have internal predecessors, (4661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:48,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:48,496 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:48,496 INFO L186 Difference]: Start difference. First operand has 1000 places, 760 transitions, 18760 flow. Second operand 29 states and 4661 transitions. [2022-01-19 00:48:48,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1013 places, 836 transitions, 22198 flow [2022-01-19 00:48:49,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1000 places, 836 transitions, 21778 flow, removed 72 selfloop flow, removed 13 redundant places. [2022-01-19 00:48:49,504 INFO L242 Difference]: Finished difference. Result has 1014 places, 764 transitions, 19066 flow [2022-01-19 00:48:49,504 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18386, PETRI_DIFFERENCE_MINUEND_PLACES=972, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=237, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=517, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=19066, PETRI_PLACES=1014, PETRI_TRANSITIONS=764} [2022-01-19 00:48:49,505 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 827 predicate places. [2022-01-19 00:48:49,505 INFO L470 AbstractCegarLoop]: Abstraction has has 1014 places, 764 transitions, 19066 flow [2022-01-19 00:48:49,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:49,505 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:48:49,505 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:48:49,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable398 [2022-01-19 00:48:49,505 INFO L402 AbstractCegarLoop]: === Iteration 400 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:48:49,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:48:49,505 INFO L85 PathProgramCache]: Analyzing trace with hash 486784882, now seen corresponding path program 96 times [2022-01-19 00:48:49,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:48:49,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792203168] [2022-01-19 00:48:49,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:48:49,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:48:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:48:49,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:48:49,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:48:49,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792203168] [2022-01-19 00:48:49,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792203168] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:48:49,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:48:49,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:48:49,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199879658] [2022-01-19 00:48:49,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:48:49,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:48:49,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:48:49,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:48:49,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:48:49,606 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:48:49,607 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1014 places, 764 transitions, 19066 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:49,607 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:48:49,607 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:48:49,607 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:48:51,256 INFO L129 PetriNetUnfolder]: 740/2868 cut-off events. [2022-01-19 00:48:51,256 INFO L130 PetriNetUnfolder]: For 103392/103400 co-relation queries the response was YES. [2022-01-19 00:48:51,339 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25226 conditions, 2868 events. 740/2868 cut-off events. For 103392/103400 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 23675 event pairs, 302 based on Foata normal form. 1/2801 useless extension candidates. Maximal degree in co-relation 24802. Up to 595 conditions per place. [2022-01-19 00:48:51,350 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 448 selfloop transitions, 195 changer transitions 62/846 dead transitions. [2022-01-19 00:48:51,351 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1029 places, 846 transitions, 22701 flow [2022-01-19 00:48:51,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:48:51,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:48:51,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4823 transitions. [2022-01-19 00:48:51,353 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655555555555555 [2022-01-19 00:48:51,353 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4823 transitions. [2022-01-19 00:48:51,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4823 transitions. [2022-01-19 00:48:51,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:48:51,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4823 transitions. [2022-01-19 00:48:51,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.76666666666668) internal successors, (4823), 30 states have internal predecessors, (4823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:51,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:51,359 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:51,359 INFO L186 Difference]: Start difference. First operand has 1014 places, 764 transitions, 19066 flow. Second operand 30 states and 4823 transitions. [2022-01-19 00:48:51,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1029 places, 846 transitions, 22701 flow [2022-01-19 00:48:52,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1015 places, 846 transitions, 22260 flow, removed 82 selfloop flow, removed 14 redundant places. [2022-01-19 00:48:52,404 INFO L242 Difference]: Finished difference. Result has 1028 places, 770 transitions, 19290 flow [2022-01-19 00:48:52,404 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18663, PETRI_DIFFERENCE_MINUEND_PLACES=986, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=764, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=19290, PETRI_PLACES=1028, PETRI_TRANSITIONS=770} [2022-01-19 00:48:52,405 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 841 predicate places. [2022-01-19 00:48:52,405 INFO L470 AbstractCegarLoop]: Abstraction has has 1028 places, 770 transitions, 19290 flow [2022-01-19 00:48:52,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:52,405 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:48:52,405 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:48:52,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable399 [2022-01-19 00:48:52,405 INFO L402 AbstractCegarLoop]: === Iteration 401 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:48:52,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:48:52,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1888547650, now seen corresponding path program 97 times [2022-01-19 00:48:52,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:48:52,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169129520] [2022-01-19 00:48:52,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:48:52,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:48:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:48:52,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:48:52,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:48:52,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169129520] [2022-01-19 00:48:52,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169129520] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:48:52,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:48:52,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:48:52,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796670927] [2022-01-19 00:48:52,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:48:52,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:48:52,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:48:52,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:48:52,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:48:52,509 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:48:52,509 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1028 places, 770 transitions, 19290 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:52,509 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:48:52,509 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:48:52,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:48:54,069 INFO L129 PetriNetUnfolder]: 733/2866 cut-off events. [2022-01-19 00:48:54,069 INFO L130 PetriNetUnfolder]: For 105171/105179 co-relation queries the response was YES. [2022-01-19 00:48:54,162 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25042 conditions, 2866 events. 733/2866 cut-off events. For 105171/105179 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 23694 event pairs, 273 based on Foata normal form. 1/2806 useless extension candidates. Maximal degree in co-relation 24614. Up to 589 conditions per place. [2022-01-19 00:48:54,174 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 389 selfloop transitions, 275 changer transitions 67/872 dead transitions. [2022-01-19 00:48:54,174 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1042 places, 872 transitions, 23400 flow [2022-01-19 00:48:54,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:48:54,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:48:54,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4817 transitions. [2022-01-19 00:48:54,176 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646031746031746 [2022-01-19 00:48:54,176 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4817 transitions. [2022-01-19 00:48:54,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4817 transitions. [2022-01-19 00:48:54,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:48:54,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4817 transitions. [2022-01-19 00:48:54,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.56666666666666) internal successors, (4817), 30 states have internal predecessors, (4817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:54,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:54,182 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:54,182 INFO L186 Difference]: Start difference. First operand has 1028 places, 770 transitions, 19290 flow. Second operand 30 states and 4817 transitions. [2022-01-19 00:48:54,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1042 places, 872 transitions, 23400 flow [2022-01-19 00:48:55,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1030 places, 872 transitions, 23003 flow, removed 84 selfloop flow, removed 12 redundant places. [2022-01-19 00:48:55,244 INFO L242 Difference]: Finished difference. Result has 1043 places, 776 transitions, 19712 flow [2022-01-19 00:48:55,244 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18922, PETRI_DIFFERENCE_MINUEND_PLACES=1001, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=770, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=267, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=19712, PETRI_PLACES=1043, PETRI_TRANSITIONS=776} [2022-01-19 00:48:55,244 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 856 predicate places. [2022-01-19 00:48:55,244 INFO L470 AbstractCegarLoop]: Abstraction has has 1043 places, 776 transitions, 19712 flow [2022-01-19 00:48:55,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:55,245 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:48:55,245 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:48:55,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable400 [2022-01-19 00:48:55,245 INFO L402 AbstractCegarLoop]: === Iteration 402 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:48:55,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:48:55,245 INFO L85 PathProgramCache]: Analyzing trace with hash 657872930, now seen corresponding path program 98 times [2022-01-19 00:48:55,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:48:55,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365443311] [2022-01-19 00:48:55,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:48:55,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:48:55,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:48:55,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:48:55,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:48:55,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365443311] [2022-01-19 00:48:55,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365443311] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:48:55,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:48:55,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:48:55,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140169459] [2022-01-19 00:48:55,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:48:55,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:48:55,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:48:55,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:48:55,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:48:55,350 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:48:55,351 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1043 places, 776 transitions, 19712 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:55,351 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:48:55,351 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:48:55,351 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:48:56,961 INFO L129 PetriNetUnfolder]: 727/2833 cut-off events. [2022-01-19 00:48:56,961 INFO L130 PetriNetUnfolder]: For 107906/107925 co-relation queries the response was YES. [2022-01-19 00:48:57,044 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25234 conditions, 2833 events. 727/2833 cut-off events. For 107906/107925 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 23366 event pairs, 289 based on Foata normal form. 3/2770 useless extension candidates. Maximal degree in co-relation 24801. Up to 587 conditions per place. [2022-01-19 00:48:57,056 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 429 selfloop transitions, 225 changer transitions 60/855 dead transitions. [2022-01-19 00:48:57,056 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1057 places, 855 transitions, 23266 flow [2022-01-19 00:48:57,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:48:57,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:48:57,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4823 transitions. [2022-01-19 00:48:57,058 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655555555555555 [2022-01-19 00:48:57,058 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4823 transitions. [2022-01-19 00:48:57,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4823 transitions. [2022-01-19 00:48:57,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:48:57,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4823 transitions. [2022-01-19 00:48:57,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.76666666666668) internal successors, (4823), 30 states have internal predecessors, (4823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:57,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:57,064 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:57,064 INFO L186 Difference]: Start difference. First operand has 1043 places, 776 transitions, 19712 flow. Second operand 30 states and 4823 transitions. [2022-01-19 00:48:57,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1057 places, 855 transitions, 23266 flow [2022-01-19 00:48:58,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1041 places, 855 transitions, 22860 flow, removed 92 selfloop flow, removed 16 redundant places. [2022-01-19 00:48:58,131 INFO L242 Difference]: Finished difference. Result has 1055 places, 781 transitions, 20041 flow [2022-01-19 00:48:58,131 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=19368, PETRI_DIFFERENCE_MINUEND_PLACES=1012, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=776, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=217, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=20041, PETRI_PLACES=1055, PETRI_TRANSITIONS=781} [2022-01-19 00:48:58,131 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 868 predicate places. [2022-01-19 00:48:58,131 INFO L470 AbstractCegarLoop]: Abstraction has has 1055 places, 781 transitions, 20041 flow [2022-01-19 00:48:58,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:58,132 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:48:58,132 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:48:58,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable401 [2022-01-19 00:48:58,132 INFO L402 AbstractCegarLoop]: === Iteration 403 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:48:58,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:48:58,132 INFO L85 PathProgramCache]: Analyzing trace with hash 762843296, now seen corresponding path program 99 times [2022-01-19 00:48:58,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:48:58,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836709374] [2022-01-19 00:48:58,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:48:58,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:48:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:48:58,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:48:58,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:48:58,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836709374] [2022-01-19 00:48:58,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836709374] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:48:58,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:48:58,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:48:58,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594247474] [2022-01-19 00:48:58,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:48:58,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:48:58,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:48:58,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:48:58,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:48:58,231 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:48:58,232 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1055 places, 781 transitions, 20041 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:58,232 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:48:58,232 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:48:58,232 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:48:59,826 INFO L129 PetriNetUnfolder]: 707/2799 cut-off events. [2022-01-19 00:48:59,826 INFO L130 PetriNetUnfolder]: For 107720/107728 co-relation queries the response was YES. [2022-01-19 00:48:59,909 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24747 conditions, 2799 events. 707/2799 cut-off events. For 107720/107728 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 23026 event pairs, 287 based on Foata normal form. 1/2734 useless extension candidates. Maximal degree in co-relation 24312. Up to 580 conditions per place. [2022-01-19 00:48:59,921 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 442 selfloop transitions, 190 changer transitions 64/837 dead transitions. [2022-01-19 00:48:59,921 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1068 places, 837 transitions, 22804 flow [2022-01-19 00:48:59,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:48:59,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:48:59,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4660 transitions. [2022-01-19 00:48:59,923 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7651888341543513 [2022-01-19 00:48:59,923 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4660 transitions. [2022-01-19 00:48:59,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4660 transitions. [2022-01-19 00:48:59,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:48:59,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4660 transitions. [2022-01-19 00:48:59,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.68965517241378) internal successors, (4660), 29 states have internal predecessors, (4660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:59,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:59,928 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:48:59,928 INFO L186 Difference]: Start difference. First operand has 1055 places, 781 transitions, 20041 flow. Second operand 29 states and 4660 transitions. [2022-01-19 00:48:59,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1068 places, 837 transitions, 22804 flow [2022-01-19 00:49:00,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1054 places, 837 transitions, 22415 flow, removed 80 selfloop flow, removed 14 redundant places. [2022-01-19 00:49:00,980 INFO L242 Difference]: Finished difference. Result has 1064 places, 762 transitions, 19433 flow [2022-01-19 00:49:00,980 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=19680, PETRI_DIFFERENCE_MINUEND_PLACES=1026, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=781, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=190, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=19433, PETRI_PLACES=1064, PETRI_TRANSITIONS=762} [2022-01-19 00:49:00,980 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 877 predicate places. [2022-01-19 00:49:00,980 INFO L470 AbstractCegarLoop]: Abstraction has has 1064 places, 762 transitions, 19433 flow [2022-01-19 00:49:00,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:00,981 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:49:00,981 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:49:00,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable402 [2022-01-19 00:49:00,981 INFO L402 AbstractCegarLoop]: === Iteration 404 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:49:00,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:49:00,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1337470260, now seen corresponding path program 100 times [2022-01-19 00:49:00,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:49:00,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919061907] [2022-01-19 00:49:00,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:49:00,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:49:00,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:49:01,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:49:01,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:49:01,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919061907] [2022-01-19 00:49:01,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919061907] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:49:01,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:49:01,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:49:01,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506052801] [2022-01-19 00:49:01,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:49:01,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:49:01,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:49:01,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:49:01,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:49:01,083 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:49:01,084 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1064 places, 762 transitions, 19433 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:01,084 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:49:01,084 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:49:01,084 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:49:02,705 INFO L129 PetriNetUnfolder]: 715/2785 cut-off events. [2022-01-19 00:49:02,705 INFO L130 PetriNetUnfolder]: For 109663/109682 co-relation queries the response was YES. [2022-01-19 00:49:02,788 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24877 conditions, 2785 events. 715/2785 cut-off events. For 109663/109682 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 22841 event pairs, 285 based on Foata normal form. 3/2721 useless extension candidates. Maximal degree in co-relation 24442. Up to 583 conditions per place. [2022-01-19 00:49:02,800 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 419 selfloop transitions, 227 changer transitions 59/846 dead transitions. [2022-01-19 00:49:02,800 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1067 places, 846 transitions, 23147 flow [2022-01-19 00:49:02,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:49:02,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:49:02,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4821 transitions. [2022-01-19 00:49:02,802 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7652380952380953 [2022-01-19 00:49:02,802 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4821 transitions. [2022-01-19 00:49:02,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4821 transitions. [2022-01-19 00:49:02,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:49:02,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4821 transitions. [2022-01-19 00:49:02,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.7) internal successors, (4821), 30 states have internal predecessors, (4821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:02,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:02,808 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:02,808 INFO L186 Difference]: Start difference. First operand has 1064 places, 762 transitions, 19433 flow. Second operand 30 states and 4821 transitions. [2022-01-19 00:49:02,808 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1067 places, 846 transitions, 23147 flow [2022-01-19 00:49:03,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1041 places, 846 transitions, 22509 flow, removed 37 selfloop flow, removed 26 redundant places. [2022-01-19 00:49:03,880 INFO L242 Difference]: Finished difference. Result has 1055 places, 774 transitions, 19762 flow [2022-01-19 00:49:03,880 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18862, PETRI_DIFFERENCE_MINUEND_PLACES=1012, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=762, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=216, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=19762, PETRI_PLACES=1055, PETRI_TRANSITIONS=774} [2022-01-19 00:49:03,880 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 868 predicate places. [2022-01-19 00:49:03,880 INFO L470 AbstractCegarLoop]: Abstraction has has 1055 places, 774 transitions, 19762 flow [2022-01-19 00:49:03,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:03,881 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:49:03,881 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:49:03,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable403 [2022-01-19 00:49:03,881 INFO L402 AbstractCegarLoop]: === Iteration 405 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:49:03,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:49:03,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1362241138, now seen corresponding path program 101 times [2022-01-19 00:49:03,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:49:03,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637256967] [2022-01-19 00:49:03,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:49:03,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:49:03,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:49:03,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:49:03,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:49:03,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637256967] [2022-01-19 00:49:03,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637256967] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:49:03,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:49:03,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:49:03,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821148341] [2022-01-19 00:49:03,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:49:03,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:49:03,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:49:03,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:49:03,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:49:03,982 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:49:03,983 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1055 places, 774 transitions, 19762 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:03,983 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:49:03,983 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:49:03,983 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:49:05,727 INFO L129 PetriNetUnfolder]: 708/2794 cut-off events. [2022-01-19 00:49:05,727 INFO L130 PetriNetUnfolder]: For 106454/106473 co-relation queries the response was YES. [2022-01-19 00:49:05,791 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24812 conditions, 2794 events. 708/2794 cut-off events. For 106454/106473 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 22971 event pairs, 270 based on Foata normal form. 3/2735 useless extension candidates. Maximal degree in co-relation 24378. Up to 580 conditions per place. [2022-01-19 00:49:05,801 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 477 selfloop transitions, 180 changer transitions 63/861 dead transitions. [2022-01-19 00:49:05,802 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1069 places, 861 transitions, 23566 flow [2022-01-19 00:49:05,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:49:05,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:49:05,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4825 transitions. [2022-01-19 00:49:05,804 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658730158730159 [2022-01-19 00:49:05,804 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4825 transitions. [2022-01-19 00:49:05,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4825 transitions. [2022-01-19 00:49:05,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:49:05,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4825 transitions. [2022-01-19 00:49:05,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.83333333333334) internal successors, (4825), 30 states have internal predecessors, (4825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:05,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:05,810 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:05,810 INFO L186 Difference]: Start difference. First operand has 1055 places, 774 transitions, 19762 flow. Second operand 30 states and 4825 transitions. [2022-01-19 00:49:05,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1069 places, 861 transitions, 23566 flow [2022-01-19 00:49:06,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1056 places, 861 transitions, 23181 flow, removed 69 selfloop flow, removed 13 redundant places. [2022-01-19 00:49:06,863 INFO L242 Difference]: Finished difference. Result has 1069 places, 780 transitions, 20021 flow [2022-01-19 00:49:06,864 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=19419, PETRI_DIFFERENCE_MINUEND_PLACES=1027, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=774, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=597, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=20021, PETRI_PLACES=1069, PETRI_TRANSITIONS=780} [2022-01-19 00:49:06,864 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 882 predicate places. [2022-01-19 00:49:06,864 INFO L470 AbstractCegarLoop]: Abstraction has has 1069 places, 780 transitions, 20021 flow [2022-01-19 00:49:06,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:06,864 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:49:06,864 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:49:06,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable404 [2022-01-19 00:49:06,865 INFO L402 AbstractCegarLoop]: === Iteration 406 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:49:06,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:49:06,865 INFO L85 PathProgramCache]: Analyzing trace with hash -934155328, now seen corresponding path program 102 times [2022-01-19 00:49:06,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:49:06,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322182774] [2022-01-19 00:49:06,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:49:06,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:49:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:49:06,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:49:06,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:49:06,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322182774] [2022-01-19 00:49:06,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322182774] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:49:06,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:49:06,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:49:06,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74855949] [2022-01-19 00:49:06,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:49:06,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:49:06,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:49:06,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:49:06,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:49:06,964 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:49:06,964 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1069 places, 780 transitions, 20021 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:06,964 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:49:06,964 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:49:06,964 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:49:08,554 INFO L129 PetriNetUnfolder]: 701/2785 cut-off events. [2022-01-19 00:49:08,554 INFO L130 PetriNetUnfolder]: For 105487/105495 co-relation queries the response was YES. [2022-01-19 00:49:08,636 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24659 conditions, 2785 events. 701/2785 cut-off events. For 105487/105495 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 22923 event pairs, 282 based on Foata normal form. 1/2721 useless extension candidates. Maximal degree in co-relation 24220. Up to 582 conditions per place. [2022-01-19 00:49:08,647 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 421 selfloop transitions, 215 changer transitions 63/840 dead transitions. [2022-01-19 00:49:08,647 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1082 places, 840 transitions, 23011 flow [2022-01-19 00:49:08,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:49:08,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:49:08,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4658 transitions. [2022-01-19 00:49:08,650 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7648604269293925 [2022-01-19 00:49:08,650 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4658 transitions. [2022-01-19 00:49:08,650 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4658 transitions. [2022-01-19 00:49:08,650 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:49:08,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4658 transitions. [2022-01-19 00:49:08,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.6206896551724) internal successors, (4658), 29 states have internal predecessors, (4658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:08,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:08,655 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:08,655 INFO L186 Difference]: Start difference. First operand has 1069 places, 780 transitions, 20021 flow. Second operand 29 states and 4658 transitions. [2022-01-19 00:49:08,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1082 places, 840 transitions, 23011 flow [2022-01-19 00:49:09,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1068 places, 840 transitions, 22645 flow, removed 74 selfloop flow, removed 14 redundant places. [2022-01-19 00:49:09,770 INFO L242 Difference]: Finished difference. Result has 1079 places, 767 transitions, 19748 flow [2022-01-19 00:49:09,770 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=19688, PETRI_DIFFERENCE_MINUEND_PLACES=1040, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=780, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=215, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=565, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=19748, PETRI_PLACES=1079, PETRI_TRANSITIONS=767} [2022-01-19 00:49:09,770 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 892 predicate places. [2022-01-19 00:49:09,770 INFO L470 AbstractCegarLoop]: Abstraction has has 1079 places, 767 transitions, 19748 flow [2022-01-19 00:49:09,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:09,771 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:49:09,771 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:49:09,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable405 [2022-01-19 00:49:09,771 INFO L402 AbstractCegarLoop]: === Iteration 407 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:49:09,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:49:09,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1250679826, now seen corresponding path program 103 times [2022-01-19 00:49:09,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:49:09,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556630173] [2022-01-19 00:49:09,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:49:09,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:49:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:49:09,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:49:09,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:49:09,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556630173] [2022-01-19 00:49:09,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556630173] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:49:09,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:49:09,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:49:09,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123794022] [2022-01-19 00:49:09,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:49:09,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:49:09,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:49:09,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:49:09,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:49:09,885 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:49:09,886 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1079 places, 767 transitions, 19748 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:09,886 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:49:09,886 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:49:09,886 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:49:11,478 INFO L129 PetriNetUnfolder]: 685/2723 cut-off events. [2022-01-19 00:49:11,479 INFO L130 PetriNetUnfolder]: For 102911/102930 co-relation queries the response was YES. [2022-01-19 00:49:11,559 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24073 conditions, 2723 events. 685/2723 cut-off events. For 102911/102930 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 22272 event pairs, 274 based on Foata normal form. 3/2662 useless extension candidates. Maximal degree in co-relation 23633. Up to 582 conditions per place. [2022-01-19 00:49:11,569 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 404 selfloop transitions, 209 changer transitions 64/818 dead transitions. [2022-01-19 00:49:11,569 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1082 places, 818 transitions, 22396 flow [2022-01-19 00:49:11,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:49:11,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:49:11,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4811 transitions. [2022-01-19 00:49:11,572 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7636507936507937 [2022-01-19 00:49:11,572 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4811 transitions. [2022-01-19 00:49:11,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4811 transitions. [2022-01-19 00:49:11,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:49:11,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4811 transitions. [2022-01-19 00:49:11,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.36666666666667) internal successors, (4811), 30 states have internal predecessors, (4811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:11,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:11,577 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:11,577 INFO L186 Difference]: Start difference. First operand has 1079 places, 767 transitions, 19748 flow. Second operand 30 states and 4811 transitions. [2022-01-19 00:49:11,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1082 places, 818 transitions, 22396 flow [2022-01-19 00:49:12,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1052 places, 818 transitions, 21612 flow, removed 31 selfloop flow, removed 30 redundant places. [2022-01-19 00:49:12,640 INFO L242 Difference]: Finished difference. Result has 1062 places, 743 transitions, 18729 flow [2022-01-19 00:49:12,641 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=19026, PETRI_DIFFERENCE_MINUEND_PLACES=1023, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=767, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=18729, PETRI_PLACES=1062, PETRI_TRANSITIONS=743} [2022-01-19 00:49:12,641 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 875 predicate places. [2022-01-19 00:49:12,641 INFO L470 AbstractCegarLoop]: Abstraction has has 1062 places, 743 transitions, 18729 flow [2022-01-19 00:49:12,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:12,641 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:49:12,641 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:49:12,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable406 [2022-01-19 00:49:12,641 INFO L402 AbstractCegarLoop]: === Iteration 408 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:49:12,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:49:12,642 INFO L85 PathProgramCache]: Analyzing trace with hash -946939948, now seen corresponding path program 104 times [2022-01-19 00:49:12,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:49:12,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034700880] [2022-01-19 00:49:12,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:49:12,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:49:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:49:12,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:49:12,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:49:12,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034700880] [2022-01-19 00:49:12,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034700880] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:49:12,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:49:12,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:49:12,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346483295] [2022-01-19 00:49:12,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:49:12,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:49:12,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:49:12,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:49:12,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:49:12,740 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:49:12,741 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1062 places, 743 transitions, 18729 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:12,741 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:49:12,741 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:49:12,741 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:49:14,250 INFO L129 PetriNetUnfolder]: 670/2658 cut-off events. [2022-01-19 00:49:14,250 INFO L130 PetriNetUnfolder]: For 96661/96669 co-relation queries the response was YES. [2022-01-19 00:49:14,329 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23208 conditions, 2658 events. 670/2658 cut-off events. For 96661/96669 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 21463 event pairs, 272 based on Foata normal form. 1/2594 useless extension candidates. Maximal degree in co-relation 22776. Up to 583 conditions per place. [2022-01-19 00:49:14,339 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 431 selfloop transitions, 159 changer transitions 66/797 dead transitions. [2022-01-19 00:49:14,339 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1056 places, 797 transitions, 21388 flow [2022-01-19 00:49:14,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 00:49:14,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 00:49:14,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4503 transitions. [2022-01-19 00:49:14,341 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658163265306123 [2022-01-19 00:49:14,342 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4503 transitions. [2022-01-19 00:49:14,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4503 transitions. [2022-01-19 00:49:14,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:49:14,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4503 transitions. [2022-01-19 00:49:14,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.82142857142858) internal successors, (4503), 28 states have internal predecessors, (4503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:14,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:14,347 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:14,347 INFO L186 Difference]: Start difference. First operand has 1062 places, 743 transitions, 18729 flow. Second operand 28 states and 4503 transitions. [2022-01-19 00:49:14,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1056 places, 797 transitions, 21388 flow [2022-01-19 00:49:15,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1023 places, 797 transitions, 20444 flow, removed 28 selfloop flow, removed 33 redundant places. [2022-01-19 00:49:15,335 INFO L242 Difference]: Finished difference. Result has 1032 places, 718 transitions, 17410 flow [2022-01-19 00:49:15,336 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17845, PETRI_DIFFERENCE_MINUEND_PLACES=996, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=743, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=17410, PETRI_PLACES=1032, PETRI_TRANSITIONS=718} [2022-01-19 00:49:15,336 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 845 predicate places. [2022-01-19 00:49:15,336 INFO L470 AbstractCegarLoop]: Abstraction has has 1032 places, 718 transitions, 17410 flow [2022-01-19 00:49:15,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:15,336 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:49:15,336 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:49:15,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable407 [2022-01-19 00:49:15,337 INFO L402 AbstractCegarLoop]: === Iteration 409 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:49:15,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:49:15,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1468377812, now seen corresponding path program 105 times [2022-01-19 00:49:15,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:49:15,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877895603] [2022-01-19 00:49:15,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:49:15,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:49:15,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:49:15,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:49:15,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:49:15,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877895603] [2022-01-19 00:49:15,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877895603] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:49:15,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:49:15,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:49:15,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718907731] [2022-01-19 00:49:15,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:49:15,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:49:15,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:49:15,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:49:15,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:49:15,438 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:49:15,439 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1032 places, 718 transitions, 17410 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:15,439 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:49:15,439 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:49:15,439 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:49:16,916 INFO L129 PetriNetUnfolder]: 663/2639 cut-off events. [2022-01-19 00:49:16,916 INFO L130 PetriNetUnfolder]: For 91599/91618 co-relation queries the response was YES. [2022-01-19 00:49:16,992 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22621 conditions, 2639 events. 663/2639 cut-off events. For 91599/91618 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 21351 event pairs, 269 based on Foata normal form. 3/2577 useless extension candidates. Maximal degree in co-relation 22199. Up to 578 conditions per place. [2022-01-19 00:49:17,002 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 375 selfloop transitions, 215 changer transitions 61/792 dead transitions. [2022-01-19 00:49:17,002 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1027 places, 792 transitions, 20716 flow [2022-01-19 00:49:17,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:49:17,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:49:17,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4663 transitions. [2022-01-19 00:49:17,004 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7656814449917898 [2022-01-19 00:49:17,004 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4663 transitions. [2022-01-19 00:49:17,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4663 transitions. [2022-01-19 00:49:17,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:49:17,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4663 transitions. [2022-01-19 00:49:17,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.79310344827587) internal successors, (4663), 29 states have internal predecessors, (4663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:17,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:17,010 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:17,010 INFO L186 Difference]: Start difference. First operand has 1032 places, 718 transitions, 17410 flow. Second operand 29 states and 4663 transitions. [2022-01-19 00:49:17,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1027 places, 792 transitions, 20716 flow [2022-01-19 00:49:17,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 996 places, 792 transitions, 20013 flow, removed 32 selfloop flow, removed 31 redundant places. [2022-01-19 00:49:17,946 INFO L242 Difference]: Finished difference. Result has 1009 places, 720 transitions, 17346 flow [2022-01-19 00:49:17,946 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16775, PETRI_DIFFERENCE_MINUEND_PLACES=968, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=718, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=17346, PETRI_PLACES=1009, PETRI_TRANSITIONS=720} [2022-01-19 00:49:17,946 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 822 predicate places. [2022-01-19 00:49:17,946 INFO L470 AbstractCegarLoop]: Abstraction has has 1009 places, 720 transitions, 17346 flow [2022-01-19 00:49:17,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:17,946 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:49:17,947 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:49:17,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable408 [2022-01-19 00:49:17,947 INFO L402 AbstractCegarLoop]: === Iteration 410 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:49:17,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:49:17,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1747538020, now seen corresponding path program 106 times [2022-01-19 00:49:17,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:49:17,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382151152] [2022-01-19 00:49:17,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:49:17,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:49:17,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:49:18,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:49:18,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:49:18,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382151152] [2022-01-19 00:49:18,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382151152] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:49:18,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:49:18,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:49:18,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976330081] [2022-01-19 00:49:18,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:49:18,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:49:18,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:49:18,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:49:18,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:49:18,046 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:49:18,047 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1009 places, 720 transitions, 17346 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:18,047 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:49:18,047 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:49:18,047 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:49:19,561 INFO L129 PetriNetUnfolder]: 658/2630 cut-off events. [2022-01-19 00:49:19,561 INFO L130 PetriNetUnfolder]: For 86799/86818 co-relation queries the response was YES. [2022-01-19 00:49:19,628 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22371 conditions, 2630 events. 658/2630 cut-off events. For 86799/86818 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 21214 event pairs, 261 based on Foata normal form. 3/2572 useless extension candidates. Maximal degree in co-relation 21954. Up to 580 conditions per place. [2022-01-19 00:49:19,638 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 388 selfloop transitions, 212 changer transitions 61/802 dead transitions. [2022-01-19 00:49:19,638 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1024 places, 802 transitions, 20922 flow [2022-01-19 00:49:19,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:49:19,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:49:19,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4819 transitions. [2022-01-19 00:49:19,640 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7649206349206349 [2022-01-19 00:49:19,641 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4819 transitions. [2022-01-19 00:49:19,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4819 transitions. [2022-01-19 00:49:19,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:49:19,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4819 transitions. [2022-01-19 00:49:19,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.63333333333333) internal successors, (4819), 30 states have internal predecessors, (4819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:19,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:19,646 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:19,646 INFO L186 Difference]: Start difference. First operand has 1009 places, 720 transitions, 17346 flow. Second operand 30 states and 4819 transitions. [2022-01-19 00:49:19,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1024 places, 802 transitions, 20922 flow [2022-01-19 00:49:20,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1007 places, 802 transitions, 20488 flow, removed 79 selfloop flow, removed 17 redundant places. [2022-01-19 00:49:20,585 INFO L242 Difference]: Finished difference. Result has 1020 places, 726 transitions, 17602 flow [2022-01-19 00:49:20,585 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16942, PETRI_DIFFERENCE_MINUEND_PLACES=978, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=720, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=511, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17602, PETRI_PLACES=1020, PETRI_TRANSITIONS=726} [2022-01-19 00:49:20,585 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 833 predicate places. [2022-01-19 00:49:20,585 INFO L470 AbstractCegarLoop]: Abstraction has has 1020 places, 726 transitions, 17602 flow [2022-01-19 00:49:20,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:20,586 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:49:20,586 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:49:20,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable409 [2022-01-19 00:49:20,586 INFO L402 AbstractCegarLoop]: === Iteration 411 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:49:20,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:49:20,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1504887180, now seen corresponding path program 107 times [2022-01-19 00:49:20,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:49:20,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601891269] [2022-01-19 00:49:20,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:49:20,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:49:20,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:49:20,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:49:20,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:49:20,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601891269] [2022-01-19 00:49:20,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601891269] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:49:20,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:49:20,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:49:20,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683108000] [2022-01-19 00:49:20,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:49:20,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:49:20,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:49:20,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:49:20,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:49:20,690 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:49:20,690 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1020 places, 726 transitions, 17602 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:20,690 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:49:20,690 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:49:20,691 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:49:22,175 INFO L129 PetriNetUnfolder]: 664/2647 cut-off events. [2022-01-19 00:49:22,175 INFO L130 PetriNetUnfolder]: For 87056/87075 co-relation queries the response was YES. [2022-01-19 00:49:22,252 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22631 conditions, 2647 events. 664/2647 cut-off events. For 87056/87075 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 21399 event pairs, 264 based on Foata normal form. 3/2588 useless extension candidates. Maximal degree in co-relation 22213. Up to 580 conditions per place. [2022-01-19 00:49:22,263 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 444 selfloop transitions, 164 changer transitions 59/808 dead transitions. [2022-01-19 00:49:22,263 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1034 places, 808 transitions, 21236 flow [2022-01-19 00:49:22,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:49:22,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:49:22,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4825 transitions. [2022-01-19 00:49:22,265 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658730158730159 [2022-01-19 00:49:22,265 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4825 transitions. [2022-01-19 00:49:22,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4825 transitions. [2022-01-19 00:49:22,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:49:22,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4825 transitions. [2022-01-19 00:49:22,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.83333333333334) internal successors, (4825), 30 states have internal predecessors, (4825), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:22,271 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:22,271 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:22,271 INFO L186 Difference]: Start difference. First operand has 1020 places, 726 transitions, 17602 flow. Second operand 30 states and 4825 transitions. [2022-01-19 00:49:22,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1034 places, 808 transitions, 21236 flow [2022-01-19 00:49:23,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1021 places, 808 transitions, 20853 flow, removed 73 selfloop flow, removed 13 redundant places. [2022-01-19 00:49:23,202 INFO L242 Difference]: Finished difference. Result has 1035 places, 738 transitions, 18045 flow [2022-01-19 00:49:23,202 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17256, PETRI_DIFFERENCE_MINUEND_PLACES=992, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=567, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=18045, PETRI_PLACES=1035, PETRI_TRANSITIONS=738} [2022-01-19 00:49:23,203 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 848 predicate places. [2022-01-19 00:49:23,203 INFO L470 AbstractCegarLoop]: Abstraction has has 1035 places, 738 transitions, 18045 flow [2022-01-19 00:49:23,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:23,203 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:49:23,203 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:49:23,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable410 [2022-01-19 00:49:23,204 INFO L402 AbstractCegarLoop]: === Iteration 412 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:49:23,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:49:23,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1982064680, now seen corresponding path program 108 times [2022-01-19 00:49:23,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:49:23,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032880901] [2022-01-19 00:49:23,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:49:23,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:49:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:49:23,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:49:23,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:49:23,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032880901] [2022-01-19 00:49:23,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032880901] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:49:23,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:49:23,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:49:23,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362694613] [2022-01-19 00:49:23,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:49:23,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:49:23,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:49:23,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:49:23,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:49:23,306 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:49:23,307 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1035 places, 738 transitions, 18045 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:23,307 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:49:23,307 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:49:23,307 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:49:24,768 INFO L129 PetriNetUnfolder]: 659/2637 cut-off events. [2022-01-19 00:49:24,769 INFO L130 PetriNetUnfolder]: For 87873/87881 co-relation queries the response was YES. [2022-01-19 00:49:24,846 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22490 conditions, 2637 events. 659/2637 cut-off events. For 87873/87881 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 21254 event pairs, 266 based on Foata normal form. 1/2573 useless extension candidates. Maximal degree in co-relation 22067. Up to 580 conditions per place. [2022-01-19 00:49:24,857 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 445 selfloop transitions, 164 changer transitions 60/810 dead transitions. [2022-01-19 00:49:24,857 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1048 places, 810 transitions, 21436 flow [2022-01-19 00:49:24,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:49:24,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:49:24,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4669 transitions. [2022-01-19 00:49:24,859 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2022-01-19 00:49:24,859 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4669 transitions. [2022-01-19 00:49:24,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4669 transitions. [2022-01-19 00:49:24,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:49:24,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4669 transitions. [2022-01-19 00:49:24,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 161.0) internal successors, (4669), 29 states have internal predecessors, (4669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:24,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:24,865 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:24,865 INFO L186 Difference]: Start difference. First operand has 1035 places, 738 transitions, 18045 flow. Second operand 29 states and 4669 transitions. [2022-01-19 00:49:24,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1048 places, 810 transitions, 21436 flow [2022-01-19 00:49:25,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1035 places, 810 transitions, 21033 flow, removed 94 selfloop flow, removed 13 redundant places. [2022-01-19 00:49:25,845 INFO L242 Difference]: Finished difference. Result has 1048 places, 740 transitions, 18159 flow [2022-01-19 00:49:25,846 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17712, PETRI_DIFFERENCE_MINUEND_PLACES=1007, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=738, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=575, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=18159, PETRI_PLACES=1048, PETRI_TRANSITIONS=740} [2022-01-19 00:49:25,846 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 861 predicate places. [2022-01-19 00:49:25,846 INFO L470 AbstractCegarLoop]: Abstraction has has 1048 places, 740 transitions, 18159 flow [2022-01-19 00:49:25,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:25,846 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:49:25,846 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:49:25,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable411 [2022-01-19 00:49:25,846 INFO L402 AbstractCegarLoop]: === Iteration 413 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:49:25,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:49:25,847 INFO L85 PathProgramCache]: Analyzing trace with hash 226372248, now seen corresponding path program 109 times [2022-01-19 00:49:25,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:49:25,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65151673] [2022-01-19 00:49:25,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:49:25,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:49:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:49:25,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:49:25,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:49:25,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65151673] [2022-01-19 00:49:25,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65151673] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:49:25,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:49:25,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:49:25,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662468079] [2022-01-19 00:49:25,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:49:25,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:49:25,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:49:25,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:49:25,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:49:25,950 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:49:25,950 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1048 places, 740 transitions, 18159 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:25,950 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:49:25,950 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:49:25,950 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:49:27,449 INFO L129 PetriNetUnfolder]: 654/2625 cut-off events. [2022-01-19 00:49:27,449 INFO L130 PetriNetUnfolder]: For 88208/88216 co-relation queries the response was YES. [2022-01-19 00:49:27,525 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22275 conditions, 2625 events. 654/2625 cut-off events. For 88208/88216 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 21152 event pairs, 266 based on Foata normal form. 1/2561 useless extension candidates. Maximal degree in co-relation 21848. Up to 580 conditions per place. [2022-01-19 00:49:27,535 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 444 selfloop transitions, 151 changer transitions 63/799 dead transitions. [2022-01-19 00:49:27,535 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1063 places, 799 transitions, 21051 flow [2022-01-19 00:49:27,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:49:27,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:49:27,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4820 transitions. [2022-01-19 00:49:27,538 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.765079365079365 [2022-01-19 00:49:27,538 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4820 transitions. [2022-01-19 00:49:27,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4820 transitions. [2022-01-19 00:49:27,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:49:27,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4820 transitions. [2022-01-19 00:49:27,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.66666666666666) internal successors, (4820), 30 states have internal predecessors, (4820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:27,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:27,543 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:27,543 INFO L186 Difference]: Start difference. First operand has 1048 places, 740 transitions, 18159 flow. Second operand 30 states and 4820 transitions. [2022-01-19 00:49:27,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1063 places, 799 transitions, 21051 flow [2022-01-19 00:49:28,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1046 places, 799 transitions, 20627 flow, removed 72 selfloop flow, removed 17 redundant places. [2022-01-19 00:49:28,535 INFO L242 Difference]: Finished difference. Result has 1058 places, 727 transitions, 17743 flow [2022-01-19 00:49:28,535 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17785, PETRI_DIFFERENCE_MINUEND_PLACES=1017, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17743, PETRI_PLACES=1058, PETRI_TRANSITIONS=727} [2022-01-19 00:49:28,535 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 871 predicate places. [2022-01-19 00:49:28,536 INFO L470 AbstractCegarLoop]: Abstraction has has 1058 places, 727 transitions, 17743 flow [2022-01-19 00:49:28,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:28,536 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:49:28,536 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:49:28,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable412 [2022-01-19 00:49:28,536 INFO L402 AbstractCegarLoop]: === Iteration 414 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:49:28,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:49:28,536 INFO L85 PathProgramCache]: Analyzing trace with hash -469949110, now seen corresponding path program 110 times [2022-01-19 00:49:28,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:49:28,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019094082] [2022-01-19 00:49:28,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:49:28,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:49:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:49:28,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:49:28,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:49:28,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019094082] [2022-01-19 00:49:28,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019094082] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:49:28,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:49:28,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:49:28,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788772690] [2022-01-19 00:49:28,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:49:28,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:49:28,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:49:28,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:49:28,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:49:28,636 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:49:28,637 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1058 places, 727 transitions, 17743 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:28,637 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:49:28,637 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:49:28,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:49:30,070 INFO L129 PetriNetUnfolder]: 625/2514 cut-off events. [2022-01-19 00:49:30,071 INFO L130 PetriNetUnfolder]: For 85149/85168 co-relation queries the response was YES. [2022-01-19 00:49:30,144 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21241 conditions, 2514 events. 625/2514 cut-off events. For 85149/85168 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 19971 event pairs, 257 based on Foata normal form. 3/2453 useless extension candidates. Maximal degree in co-relation 20813. Up to 566 conditions per place. [2022-01-19 00:49:30,154 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 430 selfloop transitions, 129 changer transitions 65/765 dead transitions. [2022-01-19 00:49:30,155 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1059 places, 765 transitions, 19814 flow [2022-01-19 00:49:30,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:49:30,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:49:30,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4654 transitions. [2022-01-19 00:49:30,157 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7642036124794745 [2022-01-19 00:49:30,157 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4654 transitions. [2022-01-19 00:49:30,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4654 transitions. [2022-01-19 00:49:30,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:49:30,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4654 transitions. [2022-01-19 00:49:30,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.48275862068965) internal successors, (4654), 29 states have internal predecessors, (4654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:30,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:30,162 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:30,162 INFO L186 Difference]: Start difference. First operand has 1058 places, 727 transitions, 17743 flow. Second operand 29 states and 4654 transitions. [2022-01-19 00:49:30,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1059 places, 765 transitions, 19814 flow [2022-01-19 00:49:31,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1028 places, 765 transitions, 19266 flow, removed 36 selfloop flow, removed 31 redundant places. [2022-01-19 00:49:31,083 INFO L242 Difference]: Finished difference. Result has 1037 places, 691 transitions, 16382 flow [2022-01-19 00:49:31,084 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17239, PETRI_DIFFERENCE_MINUEND_PLACES=1000, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=727, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=598, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=16382, PETRI_PLACES=1037, PETRI_TRANSITIONS=691} [2022-01-19 00:49:31,084 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 850 predicate places. [2022-01-19 00:49:31,084 INFO L470 AbstractCegarLoop]: Abstraction has has 1037 places, 691 transitions, 16382 flow [2022-01-19 00:49:31,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:31,084 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:49:31,084 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:49:31,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable413 [2022-01-19 00:49:31,084 INFO L402 AbstractCegarLoop]: === Iteration 415 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:49:31,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:49:31,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1917258770, now seen corresponding path program 111 times [2022-01-19 00:49:31,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:49:31,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778299981] [2022-01-19 00:49:31,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:49:31,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:49:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:49:31,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:49:31,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:49:31,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778299981] [2022-01-19 00:49:31,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778299981] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:49:31,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:49:31,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:49:31,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910387247] [2022-01-19 00:49:31,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:49:31,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:49:31,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:49:31,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:49:31,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:49:31,184 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:49:31,185 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1037 places, 691 transitions, 16382 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:31,185 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:49:31,185 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:49:31,185 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:49:32,635 INFO L129 PetriNetUnfolder]: 618/2497 cut-off events. [2022-01-19 00:49:32,636 INFO L130 PetriNetUnfolder]: For 82268/82287 co-relation queries the response was YES. [2022-01-19 00:49:32,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20918 conditions, 2497 events. 618/2497 cut-off events. For 82268/82287 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 19836 event pairs, 252 based on Foata normal form. 3/2436 useless extension candidates. Maximal degree in co-relation 20500. Up to 561 conditions per place. [2022-01-19 00:49:32,707 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 404 selfloop transitions, 159 changer transitions 64/768 dead transitions. [2022-01-19 00:49:32,707 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1022 places, 768 transitions, 19727 flow [2022-01-19 00:49:32,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:49:32,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:49:32,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4820 transitions. [2022-01-19 00:49:32,709 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.765079365079365 [2022-01-19 00:49:32,709 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4820 transitions. [2022-01-19 00:49:32,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4820 transitions. [2022-01-19 00:49:32,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:49:32,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4820 transitions. [2022-01-19 00:49:32,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.66666666666666) internal successors, (4820), 30 states have internal predecessors, (4820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:32,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:32,715 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:32,715 INFO L186 Difference]: Start difference. First operand has 1037 places, 691 transitions, 16382 flow. Second operand 30 states and 4820 transitions. [2022-01-19 00:49:32,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1022 places, 768 transitions, 19727 flow [2022-01-19 00:49:33,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 989 places, 768 transitions, 18981 flow, removed 37 selfloop flow, removed 33 redundant places. [2022-01-19 00:49:33,552 INFO L242 Difference]: Finished difference. Result has 997 places, 691 transitions, 16098 flow [2022-01-19 00:49:33,552 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15757, PETRI_DIFFERENCE_MINUEND_PLACES=960, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=16098, PETRI_PLACES=997, PETRI_TRANSITIONS=691} [2022-01-19 00:49:33,553 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 810 predicate places. [2022-01-19 00:49:33,553 INFO L470 AbstractCegarLoop]: Abstraction has has 997 places, 691 transitions, 16098 flow [2022-01-19 00:49:33,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:33,553 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:49:33,553 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:49:33,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable414 [2022-01-19 00:49:33,553 INFO L402 AbstractCegarLoop]: === Iteration 416 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:49:33,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:49:33,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1609704840, now seen corresponding path program 112 times [2022-01-19 00:49:33,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:49:33,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506376412] [2022-01-19 00:49:33,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:49:33,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:49:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:49:33,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:49:33,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:49:33,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506376412] [2022-01-19 00:49:33,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506376412] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:49:33,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:49:33,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:49:33,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938950054] [2022-01-19 00:49:33,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:49:33,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:49:33,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:49:33,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:49:33,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:49:33,650 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:49:33,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 997 places, 691 transitions, 16098 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:33,651 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:49:33,651 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:49:33,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:49:35,017 INFO L129 PetriNetUnfolder]: 612/2478 cut-off events. [2022-01-19 00:49:35,017 INFO L130 PetriNetUnfolder]: For 76977/76985 co-relation queries the response was YES. [2022-01-19 00:49:35,084 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20457 conditions, 2478 events. 612/2478 cut-off events. For 76977/76985 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 19627 event pairs, 253 based on Foata normal form. 1/2414 useless extension candidates. Maximal degree in co-relation 20051. Up to 563 conditions per place. [2022-01-19 00:49:35,094 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 381 selfloop transitions, 180 changer transitions 59/761 dead transitions. [2022-01-19 00:49:35,094 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1011 places, 761 transitions, 19221 flow [2022-01-19 00:49:35,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:49:35,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:49:35,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4817 transitions. [2022-01-19 00:49:35,096 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646031746031746 [2022-01-19 00:49:35,096 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4817 transitions. [2022-01-19 00:49:35,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4817 transitions. [2022-01-19 00:49:35,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:49:35,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4817 transitions. [2022-01-19 00:49:35,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.56666666666666) internal successors, (4817), 30 states have internal predecessors, (4817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:35,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:35,102 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:35,102 INFO L186 Difference]: Start difference. First operand has 997 places, 691 transitions, 16098 flow. Second operand 30 states and 4817 transitions. [2022-01-19 00:49:35,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1011 places, 761 transitions, 19221 flow [2022-01-19 00:49:35,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 991 places, 761 transitions, 18806 flow, removed 78 selfloop flow, removed 20 redundant places. [2022-01-19 00:49:35,908 INFO L242 Difference]: Finished difference. Result has 1001 places, 692 transitions, 16159 flow [2022-01-19 00:49:35,908 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15720, PETRI_DIFFERENCE_MINUEND_PLACES=962, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=16159, PETRI_PLACES=1001, PETRI_TRANSITIONS=692} [2022-01-19 00:49:35,909 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 814 predicate places. [2022-01-19 00:49:35,909 INFO L470 AbstractCegarLoop]: Abstraction has has 1001 places, 692 transitions, 16159 flow [2022-01-19 00:49:35,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:35,909 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:49:35,909 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:49:35,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable415 [2022-01-19 00:49:35,909 INFO L402 AbstractCegarLoop]: === Iteration 417 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:49:35,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:49:35,910 INFO L85 PathProgramCache]: Analyzing trace with hash 591208026, now seen corresponding path program 113 times [2022-01-19 00:49:35,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:49:35,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301689679] [2022-01-19 00:49:35,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:49:35,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:49:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:49:36,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:49:36,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:49:36,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301689679] [2022-01-19 00:49:36,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301689679] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:49:36,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:49:36,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:49:36,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562509062] [2022-01-19 00:49:36,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:49:36,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:49:36,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:49:36,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:49:36,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:49:36,007 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:49:36,008 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1001 places, 692 transitions, 16159 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:36,008 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:49:36,008 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:49:36,008 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:49:37,313 INFO L129 PetriNetUnfolder]: 590/2417 cut-off events. [2022-01-19 00:49:37,314 INFO L130 PetriNetUnfolder]: For 73367/73375 co-relation queries the response was YES. [2022-01-19 00:49:37,379 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19494 conditions, 2417 events. 590/2417 cut-off events. For 73367/73375 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 18982 event pairs, 249 based on Foata normal form. 1/2355 useless extension candidates. Maximal degree in co-relation 19092. Up to 563 conditions per place. [2022-01-19 00:49:37,388 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 371 selfloop transitions, 152 changer transitions 65/729 dead transitions. [2022-01-19 00:49:37,388 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1013 places, 729 transitions, 18065 flow [2022-01-19 00:49:37,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 00:49:37,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 00:49:37,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4494 transitions. [2022-01-19 00:49:37,390 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2022-01-19 00:49:37,390 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4494 transitions. [2022-01-19 00:49:37,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4494 transitions. [2022-01-19 00:49:37,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:49:37,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4494 transitions. [2022-01-19 00:49:37,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.5) internal successors, (4494), 28 states have internal predecessors, (4494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:37,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:37,395 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:37,395 INFO L186 Difference]: Start difference. First operand has 1001 places, 692 transitions, 16159 flow. Second operand 28 states and 4494 transitions. [2022-01-19 00:49:37,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1013 places, 729 transitions, 18065 flow [2022-01-19 00:49:38,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1000 places, 729 transitions, 17735 flow, removed 68 selfloop flow, removed 13 redundant places. [2022-01-19 00:49:38,154 INFO L242 Difference]: Finished difference. Result has 1008 places, 655 transitions, 14929 flow [2022-01-19 00:49:38,154 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15846, PETRI_DIFFERENCE_MINUEND_PLACES=973, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=692, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=152, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=14929, PETRI_PLACES=1008, PETRI_TRANSITIONS=655} [2022-01-19 00:49:38,154 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 821 predicate places. [2022-01-19 00:49:38,154 INFO L470 AbstractCegarLoop]: Abstraction has has 1008 places, 655 transitions, 14929 flow [2022-01-19 00:49:38,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:38,155 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:49:38,155 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:49:38,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable416 [2022-01-19 00:49:38,155 INFO L402 AbstractCegarLoop]: === Iteration 418 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:49:38,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:49:38,155 INFO L85 PathProgramCache]: Analyzing trace with hash 799016550, now seen corresponding path program 114 times [2022-01-19 00:49:38,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:49:38,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253276238] [2022-01-19 00:49:38,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:49:38,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:49:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:49:38,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:49:38,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:49:38,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253276238] [2022-01-19 00:49:38,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253276238] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:49:38,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:49:38,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:49:38,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191186396] [2022-01-19 00:49:38,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:49:38,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:49:38,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:49:38,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:49:38,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:49:38,258 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:49:38,259 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1008 places, 655 transitions, 14929 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:38,259 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:49:38,259 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:49:38,259 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:49:39,509 INFO L129 PetriNetUnfolder]: 560/2315 cut-off events. [2022-01-19 00:49:39,509 INFO L130 PetriNetUnfolder]: For 70467/70486 co-relation queries the response was YES. [2022-01-19 00:49:39,574 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18462 conditions, 2315 events. 560/2315 cut-off events. For 70467/70486 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 17888 event pairs, 236 based on Foata normal form. 3/2260 useless extension candidates. Maximal degree in co-relation 18061. Up to 549 conditions per place. [2022-01-19 00:49:39,582 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 298 selfloop transitions, 186 changer transitions 68/693 dead transitions. [2022-01-19 00:49:39,583 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 993 places, 693 transitions, 16787 flow [2022-01-19 00:49:39,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 00:49:39,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 00:49:39,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4335 transitions. [2022-01-19 00:49:39,585 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7645502645502645 [2022-01-19 00:49:39,585 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4335 transitions. [2022-01-19 00:49:39,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4335 transitions. [2022-01-19 00:49:39,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:49:39,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4335 transitions. [2022-01-19 00:49:39,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.55555555555554) internal successors, (4335), 27 states have internal predecessors, (4335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:39,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:39,590 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:39,590 INFO L186 Difference]: Start difference. First operand has 1008 places, 655 transitions, 14929 flow. Second operand 27 states and 4335 transitions. [2022-01-19 00:49:39,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 993 places, 693 transitions, 16787 flow [2022-01-19 00:49:40,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 960 places, 693 transitions, 15829 flow, removed 30 selfloop flow, removed 33 redundant places. [2022-01-19 00:49:40,286 INFO L242 Difference]: Finished difference. Result has 966 places, 611 transitions, 13053 flow [2022-01-19 00:49:40,286 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14019, PETRI_DIFFERENCE_MINUEND_PLACES=934, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=186, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=13053, PETRI_PLACES=966, PETRI_TRANSITIONS=611} [2022-01-19 00:49:40,286 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 779 predicate places. [2022-01-19 00:49:40,286 INFO L470 AbstractCegarLoop]: Abstraction has has 966 places, 611 transitions, 13053 flow [2022-01-19 00:49:40,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:40,287 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:49:40,287 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:49:40,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable417 [2022-01-19 00:49:40,287 INFO L402 AbstractCegarLoop]: === Iteration 419 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:49:40,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:49:40,287 INFO L85 PathProgramCache]: Analyzing trace with hash -79568368, now seen corresponding path program 115 times [2022-01-19 00:49:40,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:49:40,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559777197] [2022-01-19 00:49:40,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:49:40,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:49:40,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:49:40,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:49:40,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:49:40,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559777197] [2022-01-19 00:49:40,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559777197] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:49:40,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:49:40,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:49:40,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176097135] [2022-01-19 00:49:40,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:49:40,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:49:40,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:49:40,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:49:40,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:49:40,389 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:49:40,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 966 places, 611 transitions, 13053 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:40,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:49:40,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:49:40,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:49:41,663 INFO L129 PetriNetUnfolder]: 566/2340 cut-off events. [2022-01-19 00:49:41,664 INFO L130 PetriNetUnfolder]: For 68508/68516 co-relation queries the response was YES. [2022-01-19 00:49:41,725 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18334 conditions, 2340 events. 566/2340 cut-off events. For 68508/68516 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 18130 event pairs, 242 based on Foata normal form. 1/2283 useless extension candidates. Maximal degree in co-relation 17944. Up to 549 conditions per place. [2022-01-19 00:49:41,733 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 333 selfloop transitions, 161 changer transitions 59/694 dead transitions. [2022-01-19 00:49:41,733 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 945 places, 694 transitions, 16512 flow [2022-01-19 00:49:41,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:49:41,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:49:41,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4663 transitions. [2022-01-19 00:49:41,735 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7656814449917898 [2022-01-19 00:49:41,735 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4663 transitions. [2022-01-19 00:49:41,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4663 transitions. [2022-01-19 00:49:41,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:49:41,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4663 transitions. [2022-01-19 00:49:41,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.79310344827587) internal successors, (4663), 29 states have internal predecessors, (4663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:41,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:41,741 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:41,741 INFO L186 Difference]: Start difference. First operand has 966 places, 611 transitions, 13053 flow. Second operand 29 states and 4663 transitions. [2022-01-19 00:49:41,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 945 places, 694 transitions, 16512 flow [2022-01-19 00:49:42,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 904 places, 694 transitions, 14852 flow, removed 30 selfloop flow, removed 41 redundant places. [2022-01-19 00:49:42,380 INFO L242 Difference]: Finished difference. Result has 918 places, 623 transitions, 12386 flow [2022-01-19 00:49:42,381 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11626, PETRI_DIFFERENCE_MINUEND_PLACES=876, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=611, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=12386, PETRI_PLACES=918, PETRI_TRANSITIONS=623} [2022-01-19 00:49:42,381 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 731 predicate places. [2022-01-19 00:49:42,381 INFO L470 AbstractCegarLoop]: Abstraction has has 918 places, 623 transitions, 12386 flow [2022-01-19 00:49:42,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:42,381 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:49:42,381 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:49:42,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable418 [2022-01-19 00:49:42,382 INFO L402 AbstractCegarLoop]: === Iteration 420 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:49:42,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:49:42,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1466330378, now seen corresponding path program 116 times [2022-01-19 00:49:42,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:49:42,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3376122] [2022-01-19 00:49:42,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:49:42,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:49:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:49:42,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:49:42,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:49:42,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3376122] [2022-01-19 00:49:42,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3376122] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:49:42,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:49:42,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:49:42,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128118150] [2022-01-19 00:49:42,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:49:42,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:49:42,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:49:42,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:49:42,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:49:42,494 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:49:42,495 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 918 places, 623 transitions, 12386 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:42,495 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:49:42,495 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:49:42,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:49:43,737 INFO L129 PetriNetUnfolder]: 571/2345 cut-off events. [2022-01-19 00:49:43,737 INFO L130 PetriNetUnfolder]: For 59585/59606 co-relation queries the response was YES. [2022-01-19 00:49:43,798 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17811 conditions, 2345 events. 571/2345 cut-off events. For 59585/59606 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 18179 event pairs, 239 based on Foata normal form. 3/2291 useless extension candidates. Maximal degree in co-relation 17428. Up to 552 conditions per place. [2022-01-19 00:49:43,806 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 343 selfloop transitions, 161 changer transitions 60/705 dead transitions. [2022-01-19 00:49:43,806 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 932 places, 705 transitions, 15720 flow [2022-01-19 00:49:43,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-19 00:49:43,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-01-19 00:49:43,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4667 transitions. [2022-01-19 00:49:43,808 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7663382594417077 [2022-01-19 00:49:43,808 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4667 transitions. [2022-01-19 00:49:43,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4667 transitions. [2022-01-19 00:49:43,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:49:43,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4667 transitions. [2022-01-19 00:49:43,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.93103448275863) internal successors, (4667), 29 states have internal predecessors, (4667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:43,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:43,814 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:43,814 INFO L186 Difference]: Start difference. First operand has 918 places, 623 transitions, 12386 flow. Second operand 29 states and 4667 transitions. [2022-01-19 00:49:43,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 932 places, 705 transitions, 15720 flow [2022-01-19 00:49:44,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 919 places, 705 transitions, 15349 flow, removed 67 selfloop flow, removed 13 redundant places. [2022-01-19 00:49:44,457 INFO L242 Difference]: Finished difference. Result has 932 places, 634 transitions, 12837 flow [2022-01-19 00:49:44,458 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12079, PETRI_DIFFERENCE_MINUEND_PLACES=891, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=12837, PETRI_PLACES=932, PETRI_TRANSITIONS=634} [2022-01-19 00:49:44,458 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 745 predicate places. [2022-01-19 00:49:44,458 INFO L470 AbstractCegarLoop]: Abstraction has has 932 places, 634 transitions, 12837 flow [2022-01-19 00:49:44,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:44,458 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:49:44,458 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:49:44,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable419 [2022-01-19 00:49:44,458 INFO L402 AbstractCegarLoop]: === Iteration 421 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:49:44,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:49:44,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1328887584, now seen corresponding path program 117 times [2022-01-19 00:49:44,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:49:44,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353730934] [2022-01-19 00:49:44,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:49:44,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:49:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:49:44,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:49:44,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:49:44,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353730934] [2022-01-19 00:49:44,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353730934] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:49:44,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:49:44,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:49:44,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996244675] [2022-01-19 00:49:44,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:49:44,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:49:44,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:49:44,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:49:44,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:49:44,560 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:49:44,561 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 932 places, 634 transitions, 12837 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:44,561 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:49:44,561 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:49:44,561 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:49:45,770 INFO L129 PetriNetUnfolder]: 555/2293 cut-off events. [2022-01-19 00:49:45,770 INFO L130 PetriNetUnfolder]: For 58570/58589 co-relation queries the response was YES. [2022-01-19 00:49:45,829 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17296 conditions, 2293 events. 555/2293 cut-off events. For 58570/58589 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 17646 event pairs, 233 based on Foata normal form. 3/2242 useless extension candidates. Maximal degree in co-relation 16908. Up to 554 conditions per place. [2022-01-19 00:49:45,837 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 310 selfloop transitions, 170 changer transitions 66/687 dead transitions. [2022-01-19 00:49:45,837 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 945 places, 687 transitions, 15155 flow [2022-01-19 00:49:45,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 00:49:45,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 00:49:45,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4497 transitions. [2022-01-19 00:49:45,839 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764795918367347 [2022-01-19 00:49:45,839 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4497 transitions. [2022-01-19 00:49:45,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4497 transitions. [2022-01-19 00:49:45,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:49:45,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4497 transitions. [2022-01-19 00:49:45,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.60714285714286) internal successors, (4497), 28 states have internal predecessors, (4497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:45,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:45,845 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:45,845 INFO L186 Difference]: Start difference. First operand has 932 places, 634 transitions, 12837 flow. Second operand 28 states and 4497 transitions. [2022-01-19 00:49:45,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 945 places, 687 transitions, 15155 flow [2022-01-19 00:49:46,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 932 places, 687 transitions, 14773 flow, removed 84 selfloop flow, removed 13 redundant places. [2022-01-19 00:49:46,498 INFO L242 Difference]: Finished difference. Result has 941 places, 609 transitions, 12097 flow [2022-01-19 00:49:46,498 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12490, PETRI_DIFFERENCE_MINUEND_PLACES=905, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=464, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=12097, PETRI_PLACES=941, PETRI_TRANSITIONS=609} [2022-01-19 00:49:46,498 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 754 predicate places. [2022-01-19 00:49:46,498 INFO L470 AbstractCegarLoop]: Abstraction has has 941 places, 609 transitions, 12097 flow [2022-01-19 00:49:46,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:46,499 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:49:46,499 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:49:46,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable420 [2022-01-19 00:49:46,499 INFO L402 AbstractCegarLoop]: === Iteration 422 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:49:46,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:49:46,499 INFO L85 PathProgramCache]: Analyzing trace with hash -683318672, now seen corresponding path program 118 times [2022-01-19 00:49:46,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:49:46,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376272430] [2022-01-19 00:49:46,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:49:46,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:49:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:49:46,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:49:46,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:49:46,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376272430] [2022-01-19 00:49:46,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376272430] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:49:46,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:49:46,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:49:46,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246581492] [2022-01-19 00:49:46,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:49:46,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:49:46,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:49:46,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:49:46,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:49:46,601 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:49:46,601 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 941 places, 609 transitions, 12097 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:46,601 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:49:46,601 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:49:46,602 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:49:47,842 INFO L129 PetriNetUnfolder]: 537/2264 cut-off events. [2022-01-19 00:49:47,842 INFO L130 PetriNetUnfolder]: For 56015/56023 co-relation queries the response was YES. [2022-01-19 00:49:47,901 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16734 conditions, 2264 events. 537/2264 cut-off events. For 56015/56023 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 17389 event pairs, 237 based on Foata normal form. 1/2211 useless extension candidates. Maximal degree in co-relation 16345. Up to 546 conditions per place. [2022-01-19 00:49:47,908 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 323 selfloop transitions, 132 changer transitions 66/662 dead transitions. [2022-01-19 00:49:47,908 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 937 places, 662 transitions, 14356 flow [2022-01-19 00:49:47,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:49:47,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:49:47,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4814 transitions. [2022-01-19 00:49:47,911 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7641269841269841 [2022-01-19 00:49:47,911 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4814 transitions. [2022-01-19 00:49:47,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4814 transitions. [2022-01-19 00:49:47,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:49:47,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4814 transitions. [2022-01-19 00:49:47,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.46666666666667) internal successors, (4814), 30 states have internal predecessors, (4814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:47,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:47,916 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:47,916 INFO L186 Difference]: Start difference. First operand has 941 places, 609 transitions, 12097 flow. Second operand 30 states and 4814 transitions. [2022-01-19 00:49:47,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 937 places, 662 transitions, 14356 flow [2022-01-19 00:49:48,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 904 places, 662 transitions, 13487 flow, removed 40 selfloop flow, removed 33 redundant places. [2022-01-19 00:49:48,507 INFO L242 Difference]: Finished difference. Result has 913 places, 587 transitions, 10933 flow [2022-01-19 00:49:48,507 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11311, PETRI_DIFFERENCE_MINUEND_PLACES=875, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=609, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=10933, PETRI_PLACES=913, PETRI_TRANSITIONS=587} [2022-01-19 00:49:48,507 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 726 predicate places. [2022-01-19 00:49:48,508 INFO L470 AbstractCegarLoop]: Abstraction has has 913 places, 587 transitions, 10933 flow [2022-01-19 00:49:48,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:48,508 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:49:48,508 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:49:48,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable421 [2022-01-19 00:49:48,508 INFO L402 AbstractCegarLoop]: === Iteration 423 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:49:48,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:49:48,508 INFO L85 PathProgramCache]: Analyzing trace with hash -2072216124, now seen corresponding path program 119 times [2022-01-19 00:49:48,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:49:48,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512844353] [2022-01-19 00:49:48,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:49:48,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:49:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:49:48,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:49:48,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:49:48,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512844353] [2022-01-19 00:49:48,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512844353] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:49:48,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:49:48,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-19 00:49:48,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381484036] [2022-01-19 00:49:48,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:49:48,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-19 00:49:48,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:49:48,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-19 00:49:48,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-01-19 00:49:48,613 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2022-01-19 00:49:48,613 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 913 places, 587 transitions, 10933 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:49:48,613 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:49:48,613 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2022-01-19 00:49:48,613 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-01-19 00:49:48,975 WARN L244 SmtUtils]: Removed 4 from assertion stack [2022-01-19 00:49:48,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 00:49:48,976 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-19 00:49:48,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable422 [2022-01-19 00:49:48,976 WARN L594 AbstractCegarLoop]: Verification canceled: while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 27 for 9ms.. [2022-01-19 00:49:48,977 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-19 00:49:48,977 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-19 00:49:48,980 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 00:49:48,980 INFO L732 BasicCegarLoop]: Path program histogram: [252, 119, 20, 20, 2, 2, 2, 2, 2, 1, 1] [2022-01-19 00:49:48,982 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 00:49:48,982 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 00:49:48,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 12:49:48 BasicIcfg [2022-01-19 00:49:48,984 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 00:49:48,984 INFO L158 Benchmark]: Toolchain (without parser) took 796510.29ms. Allocated memory was 419.4MB in the beginning and 8.2GB in the end (delta: 7.8GB). Free memory was 365.2MB in the beginning and 4.6GB in the end (delta: -4.2GB). Peak memory consumption was 3.6GB. Max. memory is 16.0GB. [2022-01-19 00:49:48,984 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 419.4MB. Free memory is still 382.2MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 00:49:48,984 INFO L158 Benchmark]: CACSL2BoogieTranslator took 239.40ms. Allocated memory is still 419.4MB. Free memory was 365.0MB in the beginning and 390.8MB in the end (delta: -25.8MB). Peak memory consumption was 17.4MB. Max. memory is 16.0GB. [2022-01-19 00:49:48,984 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.71ms. Allocated memory is still 419.4MB. Free memory was 390.8MB in the beginning and 388.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 00:49:48,985 INFO L158 Benchmark]: Boogie Preprocessor took 25.58ms. Allocated memory is still 419.4MB. Free memory was 388.4MB in the beginning and 386.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 00:49:48,985 INFO L158 Benchmark]: RCFGBuilder took 348.52ms. Allocated memory is still 419.4MB. Free memory was 386.7MB in the beginning and 370.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2022-01-19 00:49:48,985 INFO L158 Benchmark]: TraceAbstraction took 795850.65ms. Allocated memory was 419.4MB in the beginning and 8.2GB in the end (delta: 7.8GB). Free memory was 368.9MB in the beginning and 4.6GB in the end (delta: -4.2GB). Peak memory consumption was 3.6GB. Max. memory is 16.0GB. [2022-01-19 00:49:48,986 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 419.4MB. Free memory is still 382.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 239.40ms. Allocated memory is still 419.4MB. Free memory was 365.0MB in the beginning and 390.8MB in the end (delta: -25.8MB). Peak memory consumption was 17.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 40.71ms. Allocated memory is still 419.4MB. Free memory was 390.8MB in the beginning and 388.4MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 25.58ms. Allocated memory is still 419.4MB. Free memory was 388.4MB in the beginning and 386.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 348.52ms. Allocated memory is still 419.4MB. Free memory was 386.7MB in the beginning and 370.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 795850.65ms. Allocated memory was 419.4MB in the beginning and 8.2GB in the end (delta: 7.8GB). Free memory was 368.9MB in the beginning and 4.6GB in the end (delta: -4.2GB). Peak memory consumption was 3.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 27 for 9ms.. - TimeoutResultAtElement [Line: 67]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 27 for 9ms.. - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 27 for 9ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 300 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 795.7s, OverallIterations: 423, TraceHistogramMax: 1, PathProgramHistogramMax: 252, EmptinessCheckTime: 0.0s, AutomataDifference: 752.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 50509 SdHoareTripleChecker+Valid, 55.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 50509 mSDsluCounter, 271772 SdHoareTripleChecker+Invalid, 45.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 264268 mSDsCounter, 74 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 157442 IncrementalHoareTripleChecker+Invalid, 157516 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 74 mSolverCounterUnsat, 32956 mSDtfsCounter, 157442 mSolverCounterSat, 0.9s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17605 GetRequests, 1362 SyntacticMatches, 0 SemanticMatches, 16242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155032 ImplicationChecksByTransitivity, 141.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23198occurred in iteration=259, InterpolantAutomatonStates: 13715, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 39.1s InterpolantComputationTime, 45739 NumberOfCodeBlocks, 45739 NumberOfCodeBlocksAsserted, 423 NumberOfCheckSat, 45316 ConstructedInterpolants, 0 QuantifiedInterpolants, 203092 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 423 InterpolantComputations, 423 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown