/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-exp-term-symm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 00:33:01,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 00:33:01,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 00:33:01,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 00:33:01,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 00:33:01,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 00:33:01,296 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 00:33:01,297 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 00:33:01,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 00:33:01,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 00:33:01,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 00:33:01,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 00:33:01,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 00:33:01,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 00:33:01,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 00:33:01,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 00:33:01,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 00:33:01,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 00:33:01,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 00:33:01,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 00:33:01,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 00:33:01,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 00:33:01,314 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 00:33:01,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 00:33:01,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-19 00:33:01,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 00:33:01,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 00:33:01,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 00:33:01,324 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 00:33:01,341 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 00:33:01,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 00:33:01,342 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 00:33:01,342 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 00:33:01,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 00:33:01,342 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 00:33:01,342 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 00:33:01,342 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 00:33:01,343 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 00:33:01,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 00:33:01,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 00:33:01,343 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 00:33:01,343 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 00:33:01,343 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 00:33:01,343 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 00:33:01,343 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 00:33:01,343 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 00:33:01,343 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 00:33:01,343 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 00:33:01,343 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 00:33:01,343 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 00:33:01,344 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 00:33:01,344 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 00:33:01,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 00:33:01,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 00:33:01,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 00:33:01,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 00:33:01,344 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 00:33:01,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 00:33:01,344 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 00:33:01,344 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 00:33:01,344 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 00:33:01,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 00:33:01,491 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 00:33:01,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 00:33:01,493 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 00:33:01,496 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 00:33:01,497 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-exp-term-symm.wvr.c [2022-01-19 00:33:01,533 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43fa482b4/bb6fee2c21434461bb12cf81977a0081/FLAG645bff70f [2022-01-19 00:33:01,938 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 00:33:01,938 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-exp-term-symm.wvr.c [2022-01-19 00:33:01,950 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43fa482b4/bb6fee2c21434461bb12cf81977a0081/FLAG645bff70f [2022-01-19 00:33:02,340 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43fa482b4/bb6fee2c21434461bb12cf81977a0081 [2022-01-19 00:33:02,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 00:33:02,342 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 00:33:02,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 00:33:02,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 00:33:02,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 00:33:02,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 12:33:02" (1/1) ... [2022-01-19 00:33:02,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15c0bea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:33:02, skipping insertion in model container [2022-01-19 00:33:02,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 12:33:02" (1/1) ... [2022-01-19 00:33:02,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 00:33:02,372 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 00:33:02,486 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-exp-term-symm.wvr.c[2628,2641] [2022-01-19 00:33:02,490 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 00:33:02,494 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 00:33:02,510 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-exp-term-symm.wvr.c[2628,2641] [2022-01-19 00:33:02,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 00:33:02,519 INFO L208 MainTranslator]: Completed translation [2022-01-19 00:33:02,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:33:02 WrapperNode [2022-01-19 00:33:02,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 00:33:02,520 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 00:33:02,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 00:33:02,520 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 00:33:02,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:33:02" (1/1) ... [2022-01-19 00:33:02,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:33:02" (1/1) ... [2022-01-19 00:33:02,545 INFO L137 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 128 [2022-01-19 00:33:02,545 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 00:33:02,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 00:33:02,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 00:33:02,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 00:33:02,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:33:02" (1/1) ... [2022-01-19 00:33:02,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:33:02" (1/1) ... [2022-01-19 00:33:02,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:33:02" (1/1) ... [2022-01-19 00:33:02,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:33:02" (1/1) ... [2022-01-19 00:33:02,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:33:02" (1/1) ... [2022-01-19 00:33:02,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:33:02" (1/1) ... [2022-01-19 00:33:02,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:33:02" (1/1) ... [2022-01-19 00:33:02,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 00:33:02,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 00:33:02,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 00:33:02,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 00:33:02,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:33:02" (1/1) ... [2022-01-19 00:33:02,570 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 00:33:02,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 00:33:02,585 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 00:33:02,588 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 00:33:02,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 00:33:02,608 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 00:33:02,608 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 00:33:02,608 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 00:33:02,609 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 00:33:02,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 00:33:02,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 00:33:02,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 00:33:02,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 00:33:02,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 00:33:02,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 00:33:02,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 00:33:02,610 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 00:33:02,664 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 00:33:02,665 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 00:33:02,862 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 00:33:02,869 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 00:33:02,869 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 00:33:02,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 12:33:02 BoogieIcfgContainer [2022-01-19 00:33:02,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 00:33:02,872 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 00:33:02,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 00:33:02,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 00:33:02,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 12:33:02" (1/3) ... [2022-01-19 00:33:02,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e435f44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 12:33:02, skipping insertion in model container [2022-01-19 00:33:02,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:33:02" (2/3) ... [2022-01-19 00:33:02,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e435f44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 12:33:02, skipping insertion in model container [2022-01-19 00:33:02,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 12:33:02" (3/3) ... [2022-01-19 00:33:02,884 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-exp-term-symm.wvr.c [2022-01-19 00:33:02,888 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 00:33:02,888 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 00:33:02,888 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 00:33:02,949 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,949 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,949 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,950 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,950 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,950 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,950 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,950 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,951 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,951 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,951 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,951 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,951 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,951 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,951 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,951 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,951 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,952 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,952 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,952 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,952 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,952 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,952 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,952 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,952 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,952 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,953 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,953 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,953 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,953 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,953 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,953 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,953 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,953 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,953 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,953 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,954 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,954 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,954 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,954 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,954 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,954 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,954 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,954 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,954 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,955 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,955 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,955 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,955 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,955 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,955 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,955 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,956 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,956 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,956 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,956 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,956 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,956 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,956 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,957 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,957 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,957 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,957 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,957 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,957 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,958 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,958 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,958 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,958 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,958 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,958 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,958 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,958 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,958 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,959 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,959 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,959 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,959 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,959 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,959 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,959 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,960 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,960 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,960 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,960 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,960 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,960 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,960 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,960 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,961 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,961 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,961 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,961 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,961 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,962 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,963 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,971 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,971 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,971 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,972 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,973 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,973 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,973 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,973 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,973 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,973 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,974 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,974 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,976 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,976 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,976 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,976 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,977 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,977 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,978 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,978 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,978 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,978 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,980 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,980 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,980 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,980 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,980 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,980 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,981 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,981 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,981 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,981 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,981 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,982 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,983 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,983 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,986 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,987 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,987 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,987 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,987 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,987 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,987 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,987 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,987 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,987 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,988 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,988 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,988 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,988 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,989 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,989 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,989 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,989 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,989 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,989 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,989 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,989 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,989 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,989 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,990 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,990 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,990 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,990 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,990 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,990 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,991 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,991 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,991 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,991 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,991 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,991 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,991 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,991 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,991 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,991 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,992 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,992 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,992 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,992 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,992 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,992 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,992 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,992 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,993 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,993 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,993 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,993 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,994 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,994 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,994 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,994 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,996 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,996 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,996 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,996 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,996 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,996 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,996 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,997 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,997 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,997 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,997 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,997 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,997 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,998 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,999 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,999 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,999 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,999 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,999 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,999 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,999 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,999 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,999 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,999 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:02,999 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:03,000 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:33:03,002 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-19 00:33:03,048 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 00:33:03,053 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 00:33:03,054 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-19 00:33:03,066 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 168 places, 174 transitions, 364 flow [2022-01-19 00:33:03,123 INFO L129 PetriNetUnfolder]: 13/172 cut-off events. [2022-01-19 00:33:03,123 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 00:33:03,127 INFO L84 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 172 events. 13/172 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 283 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2022-01-19 00:33:03,128 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 174 transitions, 364 flow [2022-01-19 00:33:03,133 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 163 transitions, 338 flow [2022-01-19 00:33:03,179 INFO L129 PetriNetUnfolder]: 13/162 cut-off events. [2022-01-19 00:33:03,179 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 00:33:03,180 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:03,180 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:03,180 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:03,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:03,184 INFO L85 PathProgramCache]: Analyzing trace with hash -679452967, now seen corresponding path program 1 times [2022-01-19 00:33:03,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:03,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231947326] [2022-01-19 00:33:03,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:03,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:03,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:03,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:03,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:03,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231947326] [2022-01-19 00:33:03,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231947326] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:03,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:03,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 00:33:03,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281641609] [2022-01-19 00:33:03,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:03,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 00:33:03,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:03,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 00:33:03,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 00:33:03,546 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 174 [2022-01-19 00:33:03,552 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 163 transitions, 338 flow. Second operand has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:03,553 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:03,553 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 174 [2022-01-19 00:33:03,554 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:03,776 INFO L129 PetriNetUnfolder]: 58/423 cut-off events. [2022-01-19 00:33:03,776 INFO L130 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-01-19 00:33:03,779 INFO L84 FinitePrefix]: Finished finitePrefix Result has 621 conditions, 423 events. 58/423 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1990 event pairs, 12 based on Foata normal form. 24/420 useless extension candidates. Maximal degree in co-relation 377. Up to 44 conditions per place. [2022-01-19 00:33:03,781 INFO L132 encePairwiseOnDemand]: 154/174 looper letters, 52 selfloop transitions, 10 changer transitions 34/223 dead transitions. [2022-01-19 00:33:03,781 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 223 transitions, 677 flow [2022-01-19 00:33:03,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-19 00:33:03,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-01-19 00:33:03,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2175 transitions. [2022-01-19 00:33:03,801 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-01-19 00:33:03,802 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2175 transitions. [2022-01-19 00:33:03,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2175 transitions. [2022-01-19 00:33:03,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:03,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2175 transitions. [2022-01-19 00:33:03,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 145.0) internal successors, (2175), 15 states have internal predecessors, (2175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:03,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 174.0) internal successors, (2784), 16 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:03,829 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 174.0) internal successors, (2784), 16 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:03,830 INFO L186 Difference]: Start difference. First operand has 157 places, 163 transitions, 338 flow. Second operand 15 states and 2175 transitions. [2022-01-19 00:33:03,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 223 transitions, 677 flow [2022-01-19 00:33:03,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 223 transitions, 651 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 00:33:03,840 INFO L242 Difference]: Finished difference. Result has 177 places, 161 transitions, 389 flow [2022-01-19 00:33:03,842 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=389, PETRI_PLACES=177, PETRI_TRANSITIONS=161} [2022-01-19 00:33:03,846 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 20 predicate places. [2022-01-19 00:33:03,847 INFO L470 AbstractCegarLoop]: Abstraction has has 177 places, 161 transitions, 389 flow [2022-01-19 00:33:03,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:03,848 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:03,848 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:03,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 00:33:03,848 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:03,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:03,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1258678119, now seen corresponding path program 1 times [2022-01-19 00:33:03,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:03,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622643084] [2022-01-19 00:33:03,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:03,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:03,986 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 00:33:03,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:03,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622643084] [2022-01-19 00:33:03,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622643084] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:03,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:03,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 00:33:03,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739695577] [2022-01-19 00:33:03,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:03,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 00:33:03,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:03,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 00:33:03,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-19 00:33:03,990 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-01-19 00:33:03,991 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 161 transitions, 389 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:03,991 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:03,991 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-01-19 00:33:03,991 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:04,124 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([405] L44-17-->L44-18: Formula: (= v_~result_4~0_1 |v_thread1Thread1of1ForFork0_#t~ite4#1_3|) InVars {thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} OutVars{~result_4~0=v_~result_4~0_1, thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} AuxVars[] AssignedVars[~result_4~0][55], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 109#L65-4true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 27#L50-19true, 45#L44-18true, 212#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)]) [2022-01-19 00:33:04,124 INFO L384 tUnfolder$Statistics]: this new event has 77 ancestors and is cut-off event [2022-01-19 00:33:04,124 INFO L387 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2022-01-19 00:33:04,125 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is cut-off event [2022-01-19 00:33:04,125 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is cut-off event [2022-01-19 00:33:04,126 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([454] L50-18-->L50-19: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite8#1][114], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 109#L65-4true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 27#L50-19true, 45#L44-18true, 212#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)]) [2022-01-19 00:33:04,126 INFO L384 tUnfolder$Statistics]: this new event has 77 ancestors and is cut-off event [2022-01-19 00:33:04,126 INFO L387 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2022-01-19 00:33:04,127 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is cut-off event [2022-01-19 00:33:04,127 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is cut-off event [2022-01-19 00:33:04,127 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([405] L44-17-->L44-18: Formula: (= v_~result_4~0_1 |v_thread1Thread1of1ForFork0_#t~ite4#1_3|) InVars {thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} OutVars{~result_4~0=v_~result_4~0_1, thread1Thread1of1ForFork0_#t~ite4#1=|v_thread1Thread1of1ForFork0_#t~ite4#1_3|} AuxVars[] AssignedVars[~result_4~0][55], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 109#L65-4true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 27#L50-19true, 45#L44-18true, 212#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)]) [2022-01-19 00:33:04,127 INFO L384 tUnfolder$Statistics]: this new event has 75 ancestors and is cut-off event [2022-01-19 00:33:04,127 INFO L387 tUnfolder$Statistics]: existing Event has 77 ancestors and is cut-off event [2022-01-19 00:33:04,128 INFO L387 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2022-01-19 00:33:04,128 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is cut-off event [2022-01-19 00:33:04,128 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is cut-off event [2022-01-19 00:33:04,129 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([454] L50-18-->L50-19: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite8#1][114], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 109#L65-4true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), 149#L44-19true, Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 27#L50-19true, 212#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)]) [2022-01-19 00:33:04,129 INFO L384 tUnfolder$Statistics]: this new event has 78 ancestors and is cut-off event [2022-01-19 00:33:04,129 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is cut-off event [2022-01-19 00:33:04,129 INFO L387 tUnfolder$Statistics]: existing Event has 56 ancestors and is cut-off event [2022-01-19 00:33:04,129 INFO L387 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2022-01-19 00:33:04,130 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([454] L50-18-->L50-19: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite8#1][114], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 109#L65-4true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 27#L50-19true, 45#L44-18true, 212#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)]) [2022-01-19 00:33:04,130 INFO L384 tUnfolder$Statistics]: this new event has 75 ancestors and is cut-off event [2022-01-19 00:33:04,130 INFO L387 tUnfolder$Statistics]: existing Event has 51 ancestors and is cut-off event [2022-01-19 00:33:04,131 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is cut-off event [2022-01-19 00:33:04,131 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is cut-off event [2022-01-19 00:33:04,131 INFO L387 tUnfolder$Statistics]: existing Event has 77 ancestors and is cut-off event [2022-01-19 00:33:04,132 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([454] L50-18-->L50-19: Formula: true InVars {} OutVars{thread2Thread1of1ForFork1_#t~ite8#1=|v_thread2Thread1of1ForFork1_#t~ite8#1_5|} AuxVars[] AssignedVars[thread2Thread1of1ForFork1_#t~ite8#1][114], [Black: 183#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 189#(and (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 185#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0)), Black: 195#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 109#L65-4true, 149#L44-19true, Black: 175#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0)), Black: 180#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 187#(and (= |thread1Thread1of1ForFork0_#t~ite4#1| 0) (= |thread2Thread1of1ForFork1_#t~ite8#1| 0) (= ~result_5~0 0) (= ~result_4~0 0)), Black: 176#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 174#(= ~result_5~0 0), Black: 197#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 171#true, 27#L50-19true, 212#(= (+ (* (- 256) (div ~sort_label_is_null_3~0 256)) ~sort_label_is_null_3~0) 0)]) [2022-01-19 00:33:04,132 INFO L384 tUnfolder$Statistics]: this new event has 76 ancestors and is cut-off event [2022-01-19 00:33:04,132 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is cut-off event [2022-01-19 00:33:04,132 INFO L387 tUnfolder$Statistics]: existing Event has 56 ancestors and is cut-off event [2022-01-19 00:33:04,132 INFO L387 tUnfolder$Statistics]: existing Event has 52 ancestors and is cut-off event [2022-01-19 00:33:04,132 INFO L387 tUnfolder$Statistics]: existing Event has 78 ancestors and is cut-off event [2022-01-19 00:33:04,145 INFO L129 PetriNetUnfolder]: 107/1061 cut-off events. [2022-01-19 00:33:04,145 INFO L130 PetriNetUnfolder]: For 300/315 co-relation queries the response was YES. [2022-01-19 00:33:04,150 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1566 conditions, 1061 events. 107/1061 cut-off events. For 300/315 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8010 event pairs, 17 based on Foata normal form. 6/964 useless extension candidates. Maximal degree in co-relation 1533. Up to 89 conditions per place. [2022-01-19 00:33:04,153 INFO L132 encePairwiseOnDemand]: 162/174 looper letters, 31 selfloop transitions, 12 changer transitions 1/185 dead transitions. [2022-01-19 00:33:04,153 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 185 transitions, 531 flow [2022-01-19 00:33:04,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 00:33:04,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 00:33:04,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 630 transitions. [2022-01-19 00:33:04,155 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9051724137931034 [2022-01-19 00:33:04,155 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 630 transitions. [2022-01-19 00:33:04,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 630 transitions. [2022-01-19 00:33:04,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:04,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 630 transitions. [2022-01-19 00:33:04,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:04,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:04,164 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:04,164 INFO L186 Difference]: Start difference. First operand has 177 places, 161 transitions, 389 flow. Second operand 4 states and 630 transitions. [2022-01-19 00:33:04,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 185 transitions, 531 flow [2022-01-19 00:33:04,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 185 transitions, 520 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-01-19 00:33:04,173 INFO L242 Difference]: Finished difference. Result has 168 places, 171 transitions, 466 flow [2022-01-19 00:33:04,173 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=466, PETRI_PLACES=168, PETRI_TRANSITIONS=171} [2022-01-19 00:33:04,174 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 11 predicate places. [2022-01-19 00:33:04,174 INFO L470 AbstractCegarLoop]: Abstraction has has 168 places, 171 transitions, 466 flow [2022-01-19 00:33:04,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:04,174 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:04,175 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:04,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 00:33:04,175 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:04,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:04,176 INFO L85 PathProgramCache]: Analyzing trace with hash 405844717, now seen corresponding path program 2 times [2022-01-19 00:33:04,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:04,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479721349] [2022-01-19 00:33:04,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:04,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:04,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:04,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:04,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479721349] [2022-01-19 00:33:04,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479721349] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:04,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:04,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 00:33:04,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090492288] [2022-01-19 00:33:04,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:04,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 00:33:04,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:04,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 00:33:04,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-19 00:33:04,269 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-01-19 00:33:04,270 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 171 transitions, 466 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:04,270 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:04,270 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-01-19 00:33:04,270 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:04,423 INFO L129 PetriNetUnfolder]: 91/972 cut-off events. [2022-01-19 00:33:04,423 INFO L130 PetriNetUnfolder]: For 263/282 co-relation queries the response was YES. [2022-01-19 00:33:04,425 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1495 conditions, 972 events. 91/972 cut-off events. For 263/282 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7097 event pairs, 25 based on Foata normal form. 12/929 useless extension candidates. Maximal degree in co-relation 1251. Up to 106 conditions per place. [2022-01-19 00:33:04,428 INFO L132 encePairwiseOnDemand]: 163/174 looper letters, 37 selfloop transitions, 8 changer transitions 3/189 dead transitions. [2022-01-19 00:33:04,428 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 189 transitions, 634 flow [2022-01-19 00:33:04,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 00:33:04,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 00:33:04,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 624 transitions. [2022-01-19 00:33:04,429 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.896551724137931 [2022-01-19 00:33:04,429 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 624 transitions. [2022-01-19 00:33:04,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 624 transitions. [2022-01-19 00:33:04,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:04,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 624 transitions. [2022-01-19 00:33:04,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:04,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:04,433 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:04,433 INFO L186 Difference]: Start difference. First operand has 168 places, 171 transitions, 466 flow. Second operand 4 states and 624 transitions. [2022-01-19 00:33:04,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 189 transitions, 634 flow [2022-01-19 00:33:04,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 189 transitions, 634 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 00:33:04,440 INFO L242 Difference]: Finished difference. Result has 174 places, 176 transitions, 540 flow [2022-01-19 00:33:04,440 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=540, PETRI_PLACES=174, PETRI_TRANSITIONS=176} [2022-01-19 00:33:04,442 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 17 predicate places. [2022-01-19 00:33:04,442 INFO L470 AbstractCegarLoop]: Abstraction has has 174 places, 176 transitions, 540 flow [2022-01-19 00:33:04,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:04,442 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:04,442 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:04,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 00:33:04,442 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:04,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:04,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1435280407, now seen corresponding path program 1 times [2022-01-19 00:33:04,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:04,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295283694] [2022-01-19 00:33:04,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:04,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:04,565 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 00:33:04,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:04,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295283694] [2022-01-19 00:33:04,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295283694] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:04,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:04,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 00:33:04,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844452296] [2022-01-19 00:33:04,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:04,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 00:33:04,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:04,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 00:33:04,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-19 00:33:04,570 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-01-19 00:33:04,571 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 176 transitions, 540 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:04,571 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:04,571 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-01-19 00:33:04,571 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:04,705 INFO L129 PetriNetUnfolder]: 92/1151 cut-off events. [2022-01-19 00:33:04,705 INFO L130 PetriNetUnfolder]: For 422/443 co-relation queries the response was YES. [2022-01-19 00:33:04,708 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1817 conditions, 1151 events. 92/1151 cut-off events. For 422/443 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 8351 event pairs, 20 based on Foata normal form. 9/1104 useless extension candidates. Maximal degree in co-relation 1503. Up to 71 conditions per place. [2022-01-19 00:33:04,712 INFO L132 encePairwiseOnDemand]: 164/174 looper letters, 41 selfloop transitions, 11 changer transitions 3/196 dead transitions. [2022-01-19 00:33:04,712 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 196 transitions, 738 flow [2022-01-19 00:33:04,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 00:33:04,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 00:33:04,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 626 transitions. [2022-01-19 00:33:04,714 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8994252873563219 [2022-01-19 00:33:04,714 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 626 transitions. [2022-01-19 00:33:04,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 626 transitions. [2022-01-19 00:33:04,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:04,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 626 transitions. [2022-01-19 00:33:04,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.5) internal successors, (626), 4 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:04,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:04,717 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:04,717 INFO L186 Difference]: Start difference. First operand has 174 places, 176 transitions, 540 flow. Second operand 4 states and 626 transitions. [2022-01-19 00:33:04,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 196 transitions, 738 flow [2022-01-19 00:33:04,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 196 transitions, 738 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 00:33:04,722 INFO L242 Difference]: Finished difference. Result has 179 places, 179 transitions, 602 flow [2022-01-19 00:33:04,722 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=602, PETRI_PLACES=179, PETRI_TRANSITIONS=179} [2022-01-19 00:33:04,723 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 22 predicate places. [2022-01-19 00:33:04,723 INFO L470 AbstractCegarLoop]: Abstraction has has 179 places, 179 transitions, 602 flow [2022-01-19 00:33:04,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:04,724 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:04,724 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:04,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 00:33:04,724 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:04,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:04,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1986427037, now seen corresponding path program 2 times [2022-01-19 00:33:04,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:04,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238646814] [2022-01-19 00:33:04,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:04,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:04,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:04,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:04,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238646814] [2022-01-19 00:33:04,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238646814] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:04,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:04,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 00:33:04,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652814030] [2022-01-19 00:33:04,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:04,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 00:33:04,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:04,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 00:33:04,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-19 00:33:04,793 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-01-19 00:33:04,794 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 179 transitions, 602 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:04,794 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:04,794 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-01-19 00:33:04,794 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:04,918 INFO L129 PetriNetUnfolder]: 87/1121 cut-off events. [2022-01-19 00:33:04,918 INFO L130 PetriNetUnfolder]: For 611/629 co-relation queries the response was YES. [2022-01-19 00:33:04,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1844 conditions, 1121 events. 87/1121 cut-off events. For 611/629 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 7928 event pairs, 26 based on Foata normal form. 13/1084 useless extension candidates. Maximal degree in co-relation 1551. Up to 91 conditions per place. [2022-01-19 00:33:04,923 INFO L132 encePairwiseOnDemand]: 163/174 looper letters, 42 selfloop transitions, 13 changer transitions 3/199 dead transitions. [2022-01-19 00:33:04,924 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 199 transitions, 826 flow [2022-01-19 00:33:04,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 00:33:04,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 00:33:04,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 624 transitions. [2022-01-19 00:33:04,925 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.896551724137931 [2022-01-19 00:33:04,925 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 624 transitions. [2022-01-19 00:33:04,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 624 transitions. [2022-01-19 00:33:04,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:04,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 624 transitions. [2022-01-19 00:33:04,927 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:04,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:04,928 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:04,928 INFO L186 Difference]: Start difference. First operand has 179 places, 179 transitions, 602 flow. Second operand 4 states and 624 transitions. [2022-01-19 00:33:04,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 199 transitions, 826 flow [2022-01-19 00:33:04,932 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 199 transitions, 820 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 00:33:04,934 INFO L242 Difference]: Finished difference. Result has 183 places, 185 transitions, 698 flow [2022-01-19 00:33:04,934 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=698, PETRI_PLACES=183, PETRI_TRANSITIONS=185} [2022-01-19 00:33:04,936 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 26 predicate places. [2022-01-19 00:33:04,936 INFO L470 AbstractCegarLoop]: Abstraction has has 183 places, 185 transitions, 698 flow [2022-01-19 00:33:04,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:04,937 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:04,937 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] [2022-01-19 00:33:04,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 00:33:04,937 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:04,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:04,938 INFO L85 PathProgramCache]: Analyzing trace with hash 172723029, now seen corresponding path program 3 times [2022-01-19 00:33:04,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:04,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720495432] [2022-01-19 00:33:04,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:04,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:04,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:04,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:04,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720495432] [2022-01-19 00:33:04,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720495432] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:04,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:04,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 00:33:04,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053372159] [2022-01-19 00:33:04,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:04,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 00:33:04,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:04,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 00:33:04,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-19 00:33:04,999 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-01-19 00:33:05,000 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 185 transitions, 698 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:05,000 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:05,000 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-01-19 00:33:05,000 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:05,104 INFO L129 PetriNetUnfolder]: 77/1089 cut-off events. [2022-01-19 00:33:05,104 INFO L130 PetriNetUnfolder]: For 686/698 co-relation queries the response was YES. [2022-01-19 00:33:05,107 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1803 conditions, 1089 events. 77/1089 cut-off events. For 686/698 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 7531 event pairs, 22 based on Foata normal form. 9/1046 useless extension candidates. Maximal degree in co-relation 1530. Up to 91 conditions per place. [2022-01-19 00:33:05,109 INFO L132 encePairwiseOnDemand]: 162/174 looper letters, 40 selfloop transitions, 16 changer transitions 3/200 dead transitions. [2022-01-19 00:33:05,109 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 200 transitions, 888 flow [2022-01-19 00:33:05,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 00:33:05,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 00:33:05,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 624 transitions. [2022-01-19 00:33:05,111 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.896551724137931 [2022-01-19 00:33:05,111 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 624 transitions. [2022-01-19 00:33:05,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 624 transitions. [2022-01-19 00:33:05,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:05,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 624 transitions. [2022-01-19 00:33:05,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:05,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:05,114 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 174.0) internal successors, (870), 5 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:05,114 INFO L186 Difference]: Start difference. First operand has 183 places, 185 transitions, 698 flow. Second operand 4 states and 624 transitions. [2022-01-19 00:33:05,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 200 transitions, 888 flow [2022-01-19 00:33:05,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 200 transitions, 864 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 00:33:05,119 INFO L242 Difference]: Finished difference. Result has 185 places, 188 transitions, 759 flow [2022-01-19 00:33:05,119 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=759, PETRI_PLACES=185, PETRI_TRANSITIONS=188} [2022-01-19 00:33:05,121 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 28 predicate places. [2022-01-19 00:33:05,121 INFO L470 AbstractCegarLoop]: Abstraction has has 185 places, 188 transitions, 759 flow [2022-01-19 00:33:05,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:05,122 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:05,122 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] [2022-01-19 00:33:05,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 00:33:05,122 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:05,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:05,123 INFO L85 PathProgramCache]: Analyzing trace with hash -958876555, now seen corresponding path program 3 times [2022-01-19 00:33:05,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:05,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719604390] [2022-01-19 00:33:05,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:05,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:05,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:05,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:05,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719604390] [2022-01-19 00:33:05,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719604390] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:05,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:05,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 00:33:05,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292279928] [2022-01-19 00:33:05,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:05,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 00:33:05,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:05,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 00:33:05,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 00:33:05,173 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 174 [2022-01-19 00:33:05,173 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 188 transitions, 759 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:05,173 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:05,173 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 174 [2022-01-19 00:33:05,173 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:05,311 INFO L129 PetriNetUnfolder]: 70/1026 cut-off events. [2022-01-19 00:33:05,311 INFO L130 PetriNetUnfolder]: For 709/718 co-relation queries the response was YES. [2022-01-19 00:33:05,313 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1737 conditions, 1026 events. 70/1026 cut-off events. For 709/718 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 6946 event pairs, 24 based on Foata normal form. 5/984 useless extension candidates. Maximal degree in co-relation 1504. Up to 53 conditions per place. [2022-01-19 00:33:05,315 INFO L132 encePairwiseOnDemand]: 161/174 looper letters, 45 selfloop transitions, 21 changer transitions 5/210 dead transitions. [2022-01-19 00:33:05,315 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 210 transitions, 998 flow [2022-01-19 00:33:05,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:33:05,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:33:05,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 782 transitions. [2022-01-19 00:33:05,317 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8988505747126436 [2022-01-19 00:33:05,317 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 782 transitions. [2022-01-19 00:33:05,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 782 transitions. [2022-01-19 00:33:05,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:05,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 782 transitions. [2022-01-19 00:33:05,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 156.4) internal successors, (782), 5 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:05,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:05,320 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:05,320 INFO L186 Difference]: Start difference. First operand has 185 places, 188 transitions, 759 flow. Second operand 5 states and 782 transitions. [2022-01-19 00:33:05,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 210 transitions, 998 flow [2022-01-19 00:33:05,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 210 transitions, 981 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 00:33:05,327 INFO L242 Difference]: Finished difference. Result has 191 places, 192 transitions, 870 flow [2022-01-19 00:33:05,327 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=729, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=870, PETRI_PLACES=191, PETRI_TRANSITIONS=192} [2022-01-19 00:33:05,327 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 34 predicate places. [2022-01-19 00:33:05,327 INFO L470 AbstractCegarLoop]: Abstraction has has 191 places, 192 transitions, 870 flow [2022-01-19 00:33:05,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:05,328 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:05,328 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:05,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 00:33:05,328 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:05,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:05,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1796086946, now seen corresponding path program 1 times [2022-01-19 00:33:05,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:05,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050513463] [2022-01-19 00:33:05,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:05,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:05,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:05,466 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:05,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050513463] [2022-01-19 00:33:05,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050513463] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:05,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:05,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:05,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008886262] [2022-01-19 00:33:05,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:05,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:05,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:05,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:05,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:05,468 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:05,470 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 192 transitions, 870 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:05,470 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:05,470 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:05,470 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:06,018 INFO L129 PetriNetUnfolder]: 307/1623 cut-off events. [2022-01-19 00:33:06,018 INFO L130 PetriNetUnfolder]: For 1109/1179 co-relation queries the response was YES. [2022-01-19 00:33:06,023 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3320 conditions, 1623 events. 307/1623 cut-off events. For 1109/1179 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12415 event pairs, 211 based on Foata normal form. 1/1567 useless extension candidates. Maximal degree in co-relation 2952. Up to 676 conditions per place. [2022-01-19 00:33:06,027 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 90 selfloop transitions, 7 changer transitions 52/298 dead transitions. [2022-01-19 00:33:06,027 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 298 transitions, 1513 flow [2022-01-19 00:33:06,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-19 00:33:06,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-01-19 00:33:06,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4110 transitions. [2022-01-19 00:33:06,033 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7619577308120133 [2022-01-19 00:33:06,033 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4110 transitions. [2022-01-19 00:33:06,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4110 transitions. [2022-01-19 00:33:06,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:06,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4110 transitions. [2022-01-19 00:33:06,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 132.58064516129033) internal successors, (4110), 31 states have internal predecessors, (4110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:06,047 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:06,048 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:06,048 INFO L186 Difference]: Start difference. First operand has 191 places, 192 transitions, 870 flow. Second operand 31 states and 4110 transitions. [2022-01-19 00:33:06,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 298 transitions, 1513 flow [2022-01-19 00:33:06,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 298 transitions, 1499 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-01-19 00:33:06,057 INFO L242 Difference]: Finished difference. Result has 247 places, 198 transitions, 991 flow [2022-01-19 00:33:06,057 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=991, PETRI_PLACES=247, PETRI_TRANSITIONS=198} [2022-01-19 00:33:06,057 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 90 predicate places. [2022-01-19 00:33:06,057 INFO L470 AbstractCegarLoop]: Abstraction has has 247 places, 198 transitions, 991 flow [2022-01-19 00:33:06,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:06,058 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:06,058 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:06,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 00:33:06,058 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:06,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:06,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1337300728, now seen corresponding path program 2 times [2022-01-19 00:33:06,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:06,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101195981] [2022-01-19 00:33:06,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:06,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:06,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:06,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:06,159 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:06,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101195981] [2022-01-19 00:33:06,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101195981] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:06,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:06,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:06,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671075160] [2022-01-19 00:33:06,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:06,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:06,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:06,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:06,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:06,161 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:06,162 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 198 transitions, 991 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:06,162 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:06,162 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:06,162 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:06,666 INFO L129 PetriNetUnfolder]: 321/1674 cut-off events. [2022-01-19 00:33:06,666 INFO L130 PetriNetUnfolder]: For 6457/6527 co-relation queries the response was YES. [2022-01-19 00:33:06,673 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5545 conditions, 1674 events. 321/1674 cut-off events. For 6457/6527 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12862 event pairs, 220 based on Foata normal form. 1/1616 useless extension candidates. Maximal degree in co-relation 5389. Up to 718 conditions per place. [2022-01-19 00:33:06,678 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 74 selfloop transitions, 12 changer transitions 39/274 dead transitions. [2022-01-19 00:33:06,678 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 274 transitions, 1864 flow [2022-01-19 00:33:06,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-19 00:33:06,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-01-19 00:33:06,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3446 transitions. [2022-01-19 00:33:06,683 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617152961980548 [2022-01-19 00:33:06,683 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3446 transitions. [2022-01-19 00:33:06,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3446 transitions. [2022-01-19 00:33:06,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:06,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3446 transitions. [2022-01-19 00:33:06,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.53846153846155) internal successors, (3446), 26 states have internal predecessors, (3446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:06,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:06,694 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:06,694 INFO L186 Difference]: Start difference. First operand has 247 places, 198 transitions, 991 flow. Second operand 26 states and 3446 transitions. [2022-01-19 00:33:06,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 274 transitions, 1864 flow [2022-01-19 00:33:06,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 274 transitions, 1743 flow, removed 60 selfloop flow, removed 12 redundant places. [2022-01-19 00:33:06,716 INFO L242 Difference]: Finished difference. Result has 261 places, 208 transitions, 1147 flow [2022-01-19 00:33:06,716 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=962, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1147, PETRI_PLACES=261, PETRI_TRANSITIONS=208} [2022-01-19 00:33:06,717 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 104 predicate places. [2022-01-19 00:33:06,717 INFO L470 AbstractCegarLoop]: Abstraction has has 261 places, 208 transitions, 1147 flow [2022-01-19 00:33:06,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:06,717 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:06,717 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:06,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 00:33:06,718 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:06,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:06,718 INFO L85 PathProgramCache]: Analyzing trace with hash 672767696, now seen corresponding path program 3 times [2022-01-19 00:33:06,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:06,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508855723] [2022-01-19 00:33:06,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:06,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:06,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:06,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:06,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508855723] [2022-01-19 00:33:06,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508855723] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:06,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:06,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:06,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280294154] [2022-01-19 00:33:06,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:06,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:06,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:06,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:06,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:06,815 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:06,825 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 208 transitions, 1147 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:06,825 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:06,825 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:06,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:07,276 INFO L129 PetriNetUnfolder]: 322/1704 cut-off events. [2022-01-19 00:33:07,277 INFO L130 PetriNetUnfolder]: For 10856/10928 co-relation queries the response was YES. [2022-01-19 00:33:07,287 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6358 conditions, 1704 events. 322/1704 cut-off events. For 10856/10928 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13181 event pairs, 231 based on Foata normal form. 1/1645 useless extension candidates. Maximal degree in co-relation 6190. Up to 732 conditions per place. [2022-01-19 00:33:07,293 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 83 selfloop transitions, 18 changer transitions 40/290 dead transitions. [2022-01-19 00:33:07,293 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 290 transitions, 2504 flow [2022-01-19 00:33:07,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-19 00:33:07,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-01-19 00:33:07,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3319 transitions. [2022-01-19 00:33:07,299 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629885057471264 [2022-01-19 00:33:07,299 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3319 transitions. [2022-01-19 00:33:07,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3319 transitions. [2022-01-19 00:33:07,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:07,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3319 transitions. [2022-01-19 00:33:07,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 132.76) internal successors, (3319), 25 states have internal predecessors, (3319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:07,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:07,312 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:07,312 INFO L186 Difference]: Start difference. First operand has 261 places, 208 transitions, 1147 flow. Second operand 25 states and 3319 transitions. [2022-01-19 00:33:07,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 290 transitions, 2504 flow [2022-01-19 00:33:07,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 290 transitions, 2291 flow, removed 100 selfloop flow, removed 12 redundant places. [2022-01-19 00:33:07,343 INFO L242 Difference]: Finished difference. Result has 277 places, 223 transitions, 1423 flow [2022-01-19 00:33:07,344 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1088, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1423, PETRI_PLACES=277, PETRI_TRANSITIONS=223} [2022-01-19 00:33:07,344 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 120 predicate places. [2022-01-19 00:33:07,344 INFO L470 AbstractCegarLoop]: Abstraction has has 277 places, 223 transitions, 1423 flow [2022-01-19 00:33:07,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:07,345 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:07,345 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:07,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 00:33:07,346 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:07,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:07,346 INFO L85 PathProgramCache]: Analyzing trace with hash 805415252, now seen corresponding path program 4 times [2022-01-19 00:33:07,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:07,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449459370] [2022-01-19 00:33:07,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:07,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:07,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:07,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:07,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449459370] [2022-01-19 00:33:07,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449459370] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:07,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:07,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:07,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228762618] [2022-01-19 00:33:07,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:07,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:07,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:07,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:07,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:07,459 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:07,460 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 223 transitions, 1423 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:07,460 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:07,460 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:07,460 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:07,933 INFO L129 PetriNetUnfolder]: 319/1719 cut-off events. [2022-01-19 00:33:07,934 INFO L130 PetriNetUnfolder]: For 14794/14868 co-relation queries the response was YES. [2022-01-19 00:33:07,946 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6996 conditions, 1719 events. 319/1719 cut-off events. For 14794/14868 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13506 event pairs, 218 based on Foata normal form. 1/1659 useless extension candidates. Maximal degree in co-relation 6824. Up to 686 conditions per place. [2022-01-19 00:33:07,954 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 117 selfloop transitions, 17 changer transitions 50/333 dead transitions. [2022-01-19 00:33:07,954 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 333 transitions, 3170 flow [2022-01-19 00:33:07,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:33:07,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:33:07,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3976 transitions. [2022-01-19 00:33:07,957 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616858237547893 [2022-01-19 00:33:07,957 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3976 transitions. [2022-01-19 00:33:07,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3976 transitions. [2022-01-19 00:33:07,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:07,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3976 transitions. [2022-01-19 00:33:07,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 132.53333333333333) internal successors, (3976), 30 states have internal predecessors, (3976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:07,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:07,968 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:07,968 INFO L186 Difference]: Start difference. First operand has 277 places, 223 transitions, 1423 flow. Second operand 30 states and 3976 transitions. [2022-01-19 00:33:07,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 333 transitions, 3170 flow [2022-01-19 00:33:08,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 333 transitions, 2710 flow, removed 230 selfloop flow, removed 10 redundant places. [2022-01-19 00:33:08,013 INFO L242 Difference]: Finished difference. Result has 308 places, 226 transitions, 1451 flow [2022-01-19 00:33:08,013 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1265, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1451, PETRI_PLACES=308, PETRI_TRANSITIONS=226} [2022-01-19 00:33:08,013 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 151 predicate places. [2022-01-19 00:33:08,013 INFO L470 AbstractCegarLoop]: Abstraction has has 308 places, 226 transitions, 1451 flow [2022-01-19 00:33:08,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:08,014 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:08,014 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:08,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-19 00:33:08,014 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:08,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:08,014 INFO L85 PathProgramCache]: Analyzing trace with hash 763934422, now seen corresponding path program 5 times [2022-01-19 00:33:08,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:08,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126317792] [2022-01-19 00:33:08,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:08,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:08,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:08,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:08,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:08,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126317792] [2022-01-19 00:33:08,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126317792] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:08,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:08,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:08,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053237438] [2022-01-19 00:33:08,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:08,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:08,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:08,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:08,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:08,110 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:08,111 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 226 transitions, 1451 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:08,111 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:08,111 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:08,111 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:08,671 INFO L129 PetriNetUnfolder]: 335/1750 cut-off events. [2022-01-19 00:33:08,671 INFO L130 PetriNetUnfolder]: For 16745/16815 co-relation queries the response was YES. [2022-01-19 00:33:08,683 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7360 conditions, 1750 events. 335/1750 cut-off events. For 16745/16815 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13687 event pairs, 224 based on Foata normal form. 1/1688 useless extension candidates. Maximal degree in co-relation 7224. Up to 728 conditions per place. [2022-01-19 00:33:08,689 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 93 selfloop transitions, 29 changer transitions 41/312 dead transitions. [2022-01-19 00:33:08,689 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 312 transitions, 2843 flow [2022-01-19 00:33:08,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 00:33:08,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 00:33:08,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3705 transitions. [2022-01-19 00:33:08,693 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7604679802955665 [2022-01-19 00:33:08,693 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3705 transitions. [2022-01-19 00:33:08,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3705 transitions. [2022-01-19 00:33:08,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:08,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3705 transitions. [2022-01-19 00:33:08,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.32142857142858) internal successors, (3705), 28 states have internal predecessors, (3705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:08,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:08,703 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:08,703 INFO L186 Difference]: Start difference. First operand has 308 places, 226 transitions, 1451 flow. Second operand 28 states and 3705 transitions. [2022-01-19 00:33:08,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 312 transitions, 2843 flow [2022-01-19 00:33:08,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 312 transitions, 2619 flow, removed 110 selfloop flow, removed 24 redundant places. [2022-01-19 00:33:08,755 INFO L242 Difference]: Finished difference. Result has 306 places, 240 transitions, 1660 flow [2022-01-19 00:33:08,755 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1361, PETRI_DIFFERENCE_MINUEND_PLACES=261, 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=28, PETRI_FLOW=1660, PETRI_PLACES=306, PETRI_TRANSITIONS=240} [2022-01-19 00:33:08,755 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 149 predicate places. [2022-01-19 00:33:08,756 INFO L470 AbstractCegarLoop]: Abstraction has has 306 places, 240 transitions, 1660 flow [2022-01-19 00:33:08,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:08,756 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:08,756 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:08,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-19 00:33:08,756 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:08,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:08,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1349135860, now seen corresponding path program 6 times [2022-01-19 00:33:08,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:08,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570670639] [2022-01-19 00:33:08,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:08,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:08,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:08,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:08,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570670639] [2022-01-19 00:33:08,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570670639] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:08,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:08,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:08,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657437071] [2022-01-19 00:33:08,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:08,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:08,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:08,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:08,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:08,860 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:08,861 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 240 transitions, 1660 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:08,861 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:08,861 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:08,861 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:09,388 INFO L129 PetriNetUnfolder]: 353/1796 cut-off events. [2022-01-19 00:33:09,388 INFO L130 PetriNetUnfolder]: For 13438/13512 co-relation queries the response was YES. [2022-01-19 00:33:09,402 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7466 conditions, 1796 events. 353/1796 cut-off events. For 13438/13512 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 14124 event pairs, 247 based on Foata normal form. 3/1733 useless extension candidates. Maximal degree in co-relation 7274. Up to 742 conditions per place. [2022-01-19 00:33:09,408 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 93 selfloop transitions, 35 changer transitions 41/318 dead transitions. [2022-01-19 00:33:09,408 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 318 transitions, 3045 flow [2022-01-19 00:33:09,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-19 00:33:09,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-01-19 00:33:09,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3452 transitions. [2022-01-19 00:33:09,411 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7630415561450045 [2022-01-19 00:33:09,411 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3452 transitions. [2022-01-19 00:33:09,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3452 transitions. [2022-01-19 00:33:09,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:09,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3452 transitions. [2022-01-19 00:33:09,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.76923076923077) internal successors, (3452), 26 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:09,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:09,419 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:09,419 INFO L186 Difference]: Start difference. First operand has 306 places, 240 transitions, 1660 flow. Second operand 26 states and 3452 transitions. [2022-01-19 00:33:09,419 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 318 transitions, 3045 flow [2022-01-19 00:33:09,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 318 transitions, 2821 flow, removed 103 selfloop flow, removed 18 redundant places. [2022-01-19 00:33:09,472 INFO L242 Difference]: Finished difference. Result has 316 places, 254 transitions, 1929 flow [2022-01-19 00:33:09,472 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1929, PETRI_PLACES=316, PETRI_TRANSITIONS=254} [2022-01-19 00:33:09,473 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 159 predicate places. [2022-01-19 00:33:09,473 INFO L470 AbstractCegarLoop]: Abstraction has has 316 places, 254 transitions, 1929 flow [2022-01-19 00:33:09,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:09,473 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:09,473 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:09,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-19 00:33:09,473 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:09,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:09,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1491611390, now seen corresponding path program 7 times [2022-01-19 00:33:09,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:09,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252729263] [2022-01-19 00:33:09,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:09,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:09,573 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 00:33:09,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:09,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252729263] [2022-01-19 00:33:09,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252729263] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:09,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:09,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:09,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050169959] [2022-01-19 00:33:09,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:09,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:09,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:09,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:09,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:09,575 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:09,576 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 254 transitions, 1929 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:09,576 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:09,576 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:09,576 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:10,099 INFO L129 PetriNetUnfolder]: 347/1785 cut-off events. [2022-01-19 00:33:10,099 INFO L130 PetriNetUnfolder]: For 12004/12083 co-relation queries the response was YES. [2022-01-19 00:33:10,113 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7272 conditions, 1785 events. 347/1785 cut-off events. For 12004/12083 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 14085 event pairs, 230 based on Foata normal form. 2/1720 useless extension candidates. Maximal degree in co-relation 7081. Up to 750 conditions per place. [2022-01-19 00:33:10,118 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 104 selfloop transitions, 39 changer transitions 37/329 dead transitions. [2022-01-19 00:33:10,118 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 329 transitions, 3436 flow [2022-01-19 00:33:10,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 00:33:10,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 00:33:10,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2923 transitions. [2022-01-19 00:33:10,120 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635841170323929 [2022-01-19 00:33:10,121 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2923 transitions. [2022-01-19 00:33:10,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2923 transitions. [2022-01-19 00:33:10,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:10,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2923 transitions. [2022-01-19 00:33:10,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.86363636363637) internal successors, (2923), 22 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 00:33:10,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:10,127 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:10,127 INFO L186 Difference]: Start difference. First operand has 316 places, 254 transitions, 1929 flow. Second operand 22 states and 2923 transitions. [2022-01-19 00:33:10,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 329 transitions, 3436 flow [2022-01-19 00:33:10,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 329 transitions, 3237 flow, removed 79 selfloop flow, removed 13 redundant places. [2022-01-19 00:33:10,175 INFO L242 Difference]: Finished difference. Result has 324 places, 265 transitions, 2180 flow [2022-01-19 00:33:10,175 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1835, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2180, PETRI_PLACES=324, PETRI_TRANSITIONS=265} [2022-01-19 00:33:10,176 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 167 predicate places. [2022-01-19 00:33:10,176 INFO L470 AbstractCegarLoop]: Abstraction has has 324 places, 265 transitions, 2180 flow [2022-01-19 00:33:10,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:10,176 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:10,176 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:10,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-19 00:33:10,176 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:10,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:10,177 INFO L85 PathProgramCache]: Analyzing trace with hash 184070188, now seen corresponding path program 8 times [2022-01-19 00:33:10,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:10,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599363916] [2022-01-19 00:33:10,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:10,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:10,276 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 00:33:10,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:10,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599363916] [2022-01-19 00:33:10,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599363916] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:10,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:10,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:10,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414627946] [2022-01-19 00:33:10,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:10,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:10,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:10,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:10,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:10,278 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:10,279 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 265 transitions, 2180 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:10,279 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:10,279 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:10,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:10,737 INFO L129 PetriNetUnfolder]: 342/1788 cut-off events. [2022-01-19 00:33:10,737 INFO L130 PetriNetUnfolder]: For 12321/12405 co-relation queries the response was YES. [2022-01-19 00:33:10,751 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7247 conditions, 1788 events. 342/1788 cut-off events. For 12321/12405 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 14084 event pairs, 228 based on Foata normal form. 9/1732 useless extension candidates. Maximal degree in co-relation 7046. Up to 744 conditions per place. [2022-01-19 00:33:10,756 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 100 selfloop transitions, 45 changer transitions 33/327 dead transitions. [2022-01-19 00:33:10,756 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 327 transitions, 3448 flow [2022-01-19 00:33:10,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 00:33:10,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 00:33:10,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2920 transitions. [2022-01-19 00:33:10,758 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628004179728317 [2022-01-19 00:33:10,758 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2920 transitions. [2022-01-19 00:33:10,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2920 transitions. [2022-01-19 00:33:10,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:10,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2920 transitions. [2022-01-19 00:33:10,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.72727272727272) internal successors, (2920), 22 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 00:33:10,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:10,765 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:10,765 INFO L186 Difference]: Start difference. First operand has 324 places, 265 transitions, 2180 flow. Second operand 22 states and 2920 transitions. [2022-01-19 00:33:10,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 327 transitions, 3448 flow [2022-01-19 00:33:10,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 327 transitions, 3203 flow, removed 90 selfloop flow, removed 13 redundant places. [2022-01-19 00:33:10,820 INFO L242 Difference]: Finished difference. Result has 330 places, 272 transitions, 2298 flow [2022-01-19 00:33:10,821 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2031, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2298, PETRI_PLACES=330, PETRI_TRANSITIONS=272} [2022-01-19 00:33:10,821 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 173 predicate places. [2022-01-19 00:33:10,821 INFO L470 AbstractCegarLoop]: Abstraction has has 330 places, 272 transitions, 2298 flow [2022-01-19 00:33:10,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:10,822 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:10,822 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] [2022-01-19 00:33:10,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-19 00:33:10,822 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:10,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:10,822 INFO L85 PathProgramCache]: Analyzing trace with hash 951772256, now seen corresponding path program 9 times [2022-01-19 00:33:10,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:10,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615746819] [2022-01-19 00:33:10,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:10,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:10,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:10,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:10,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615746819] [2022-01-19 00:33:10,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615746819] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:10,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:10,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:10,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522668140] [2022-01-19 00:33:10,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:10,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:10,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:10,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:10,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:10,934 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:10,935 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 272 transitions, 2298 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:10,935 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:10,935 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:10,935 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:11,481 INFO L129 PetriNetUnfolder]: 341/1793 cut-off events. [2022-01-19 00:33:11,482 INFO L130 PetriNetUnfolder]: For 12053/12134 co-relation queries the response was YES. [2022-01-19 00:33:11,495 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7278 conditions, 1793 events. 341/1793 cut-off events. For 12053/12134 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 14175 event pairs, 226 based on Foata normal form. 2/1732 useless extension candidates. Maximal degree in co-relation 7077. Up to 732 conditions per place. [2022-01-19 00:33:11,499 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 109 selfloop transitions, 38 changer transitions 45/341 dead transitions. [2022-01-19 00:33:11,500 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 341 transitions, 3730 flow [2022-01-19 00:33:11,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 00:33:11,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 00:33:11,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3579 transitions. [2022-01-19 00:33:11,506 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7618135376756067 [2022-01-19 00:33:11,507 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3579 transitions. [2022-01-19 00:33:11,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3579 transitions. [2022-01-19 00:33:11,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:11,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3579 transitions. [2022-01-19 00:33:11,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.55555555555554) internal successors, (3579), 27 states have internal predecessors, (3579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:11,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:11,520 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:11,520 INFO L186 Difference]: Start difference. First operand has 330 places, 272 transitions, 2298 flow. Second operand 27 states and 3579 transitions. [2022-01-19 00:33:11,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 341 transitions, 3730 flow [2022-01-19 00:33:11,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 341 transitions, 3598 flow, removed 57 selfloop flow, removed 6 redundant places. [2022-01-19 00:33:11,576 INFO L242 Difference]: Finished difference. Result has 358 places, 275 transitions, 2444 flow [2022-01-19 00:33:11,576 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2222, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2444, PETRI_PLACES=358, PETRI_TRANSITIONS=275} [2022-01-19 00:33:11,576 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 201 predicate places. [2022-01-19 00:33:11,576 INFO L470 AbstractCegarLoop]: Abstraction has has 358 places, 275 transitions, 2444 flow [2022-01-19 00:33:11,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:11,577 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:11,577 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] [2022-01-19 00:33:11,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-19 00:33:11,577 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:11,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:11,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1137942998, now seen corresponding path program 10 times [2022-01-19 00:33:11,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:11,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869263445] [2022-01-19 00:33:11,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:11,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:11,664 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 00:33:11,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:11,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869263445] [2022-01-19 00:33:11,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869263445] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:11,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:11,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:11,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694226505] [2022-01-19 00:33:11,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:11,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:11,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:11,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:11,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:11,666 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:11,667 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 275 transitions, 2444 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:11,667 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:11,667 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:11,667 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:12,126 INFO L129 PetriNetUnfolder]: 323/1726 cut-off events. [2022-01-19 00:33:12,126 INFO L130 PetriNetUnfolder]: For 11676/11750 co-relation queries the response was YES. [2022-01-19 00:33:12,140 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7039 conditions, 1726 events. 323/1726 cut-off events. For 11676/11750 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 13494 event pairs, 226 based on Foata normal form. 3/1662 useless extension candidates. Maximal degree in co-relation 6878. Up to 736 conditions per place. [2022-01-19 00:33:12,145 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 97 selfloop transitions, 29 changer transitions 38/313 dead transitions. [2022-01-19 00:33:12,145 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 313 transitions, 3289 flow [2022-01-19 00:33:12,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:33:12,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:33:12,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2397 transitions. [2022-01-19 00:33:12,147 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7653256704980843 [2022-01-19 00:33:12,147 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2397 transitions. [2022-01-19 00:33:12,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2397 transitions. [2022-01-19 00:33:12,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:12,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2397 transitions. [2022-01-19 00:33:12,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 133.16666666666666) internal successors, (2397), 18 states have internal predecessors, (2397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:12,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:12,152 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:12,153 INFO L186 Difference]: Start difference. First operand has 358 places, 275 transitions, 2444 flow. Second operand 18 states and 2397 transitions. [2022-01-19 00:33:12,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 313 transitions, 3289 flow [2022-01-19 00:33:12,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 313 transitions, 3101 flow, removed 65 selfloop flow, removed 21 redundant places. [2022-01-19 00:33:12,222 INFO L242 Difference]: Finished difference. Result has 342 places, 255 transitions, 2035 flow [2022-01-19 00:33:12,222 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2310, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2035, PETRI_PLACES=342, PETRI_TRANSITIONS=255} [2022-01-19 00:33:12,223 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 185 predicate places. [2022-01-19 00:33:12,223 INFO L470 AbstractCegarLoop]: Abstraction has has 342 places, 255 transitions, 2035 flow [2022-01-19 00:33:12,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:12,223 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:12,223 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:12,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-19 00:33:12,224 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:12,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:12,224 INFO L85 PathProgramCache]: Analyzing trace with hash 518182422, now seen corresponding path program 11 times [2022-01-19 00:33:12,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:12,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388532486] [2022-01-19 00:33:12,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:12,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:12,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:12,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:12,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:12,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388532486] [2022-01-19 00:33:12,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388532486] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:12,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:12,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:12,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221373332] [2022-01-19 00:33:12,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:12,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:12,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:12,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:12,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:12,321 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:12,321 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 255 transitions, 2035 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:12,322 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:12,322 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:12,322 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:12,746 INFO L129 PetriNetUnfolder]: 326/1734 cut-off events. [2022-01-19 00:33:12,746 INFO L130 PetriNetUnfolder]: For 10912/10986 co-relation queries the response was YES. [2022-01-19 00:33:12,758 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6970 conditions, 1734 events. 326/1734 cut-off events. For 10912/10986 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 13593 event pairs, 228 based on Foata normal form. 3/1672 useless extension candidates. Maximal degree in co-relation 6870. Up to 736 conditions per place. [2022-01-19 00:33:12,762 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 92 selfloop transitions, 36 changer transitions 30/307 dead transitions. [2022-01-19 00:33:12,762 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 307 transitions, 3109 flow [2022-01-19 00:33:12,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 00:33:12,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 00:33:12,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2661 transitions. [2022-01-19 00:33:12,764 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646551724137931 [2022-01-19 00:33:12,765 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2661 transitions. [2022-01-19 00:33:12,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2661 transitions. [2022-01-19 00:33:12,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:12,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2661 transitions. [2022-01-19 00:33:12,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.05) internal successors, (2661), 20 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:12,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:12,770 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:12,770 INFO L186 Difference]: Start difference. First operand has 342 places, 255 transitions, 2035 flow. Second operand 20 states and 2661 transitions. [2022-01-19 00:33:12,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 307 transitions, 3109 flow [2022-01-19 00:33:12,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 307 transitions, 2850 flow, removed 35 selfloop flow, removed 22 redundant places. [2022-01-19 00:33:12,820 INFO L242 Difference]: Finished difference. Result has 324 places, 264 transitions, 2149 flow [2022-01-19 00:33:12,820 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1871, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2149, PETRI_PLACES=324, PETRI_TRANSITIONS=264} [2022-01-19 00:33:12,820 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 167 predicate places. [2022-01-19 00:33:12,821 INFO L470 AbstractCegarLoop]: Abstraction has has 324 places, 264 transitions, 2149 flow [2022-01-19 00:33:12,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:12,821 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:12,821 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:12,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-19 00:33:12,821 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:12,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:12,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1058941744, now seen corresponding path program 12 times [2022-01-19 00:33:12,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:12,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720746222] [2022-01-19 00:33:12,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:12,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:12,919 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 00:33:12,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:12,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720746222] [2022-01-19 00:33:12,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720746222] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:12,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:12,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:12,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644990467] [2022-01-19 00:33:12,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:12,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:12,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:12,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:12,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:12,921 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:12,922 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 264 transitions, 2149 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:12,922 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:12,922 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:12,922 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:13,393 INFO L129 PetriNetUnfolder]: 323/1729 cut-off events. [2022-01-19 00:33:13,393 INFO L130 PetriNetUnfolder]: For 9795/9869 co-relation queries the response was YES. [2022-01-19 00:33:13,406 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6742 conditions, 1729 events. 323/1729 cut-off events. For 9795/9869 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13600 event pairs, 227 based on Foata normal form. 3/1667 useless extension candidates. Maximal degree in co-relation 6647. Up to 736 conditions per place. [2022-01-19 00:33:13,413 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 93 selfloop transitions, 37 changer transitions 31/310 dead transitions. [2022-01-19 00:33:13,413 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 310 transitions, 3093 flow [2022-01-19 00:33:13,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-19 00:33:13,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-19 00:33:13,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2532 transitions. [2022-01-19 00:33:13,416 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658802177858439 [2022-01-19 00:33:13,416 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2532 transitions. [2022-01-19 00:33:13,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2532 transitions. [2022-01-19 00:33:13,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:13,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2532 transitions. [2022-01-19 00:33:13,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.26315789473685) internal successors, (2532), 19 states have internal predecessors, (2532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:13,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:13,423 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:13,423 INFO L186 Difference]: Start difference. First operand has 324 places, 264 transitions, 2149 flow. Second operand 19 states and 2532 transitions. [2022-01-19 00:33:13,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 310 transitions, 3093 flow [2022-01-19 00:33:13,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 310 transitions, 2966 flow, removed 43 selfloop flow, removed 7 redundant places. [2022-01-19 00:33:13,480 INFO L242 Difference]: Finished difference. Result has 334 places, 267 transitions, 2231 flow [2022-01-19 00:33:13,480 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2061, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2231, PETRI_PLACES=334, PETRI_TRANSITIONS=267} [2022-01-19 00:33:13,480 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 177 predicate places. [2022-01-19 00:33:13,481 INFO L470 AbstractCegarLoop]: Abstraction has has 334 places, 267 transitions, 2231 flow [2022-01-19 00:33:13,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:13,481 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:13,481 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] [2022-01-19 00:33:13,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-19 00:33:13,481 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:13,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:13,482 INFO L85 PathProgramCache]: Analyzing trace with hash -8065022, now seen corresponding path program 13 times [2022-01-19 00:33:13,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:13,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038264342] [2022-01-19 00:33:13,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:13,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:13,578 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 00:33:13,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:13,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038264342] [2022-01-19 00:33:13,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038264342] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:13,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:13,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:13,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397618993] [2022-01-19 00:33:13,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:13,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:13,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:13,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:13,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:13,580 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:13,580 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 267 transitions, 2231 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:13,580 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:13,581 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:13,581 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:14,007 INFO L129 PetriNetUnfolder]: 322/1724 cut-off events. [2022-01-19 00:33:14,007 INFO L130 PetriNetUnfolder]: For 9816/9898 co-relation queries the response was YES. [2022-01-19 00:33:14,020 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6649 conditions, 1724 events. 322/1724 cut-off events. For 9816/9898 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 13466 event pairs, 227 based on Foata normal form. 3/1662 useless extension candidates. Maximal degree in co-relation 6550. Up to 734 conditions per place. [2022-01-19 00:33:14,024 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 93 selfloop transitions, 27 changer transitions 41/310 dead transitions. [2022-01-19 00:33:14,024 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 310 transitions, 3066 flow [2022-01-19 00:33:14,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 00:33:14,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 00:33:14,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2790 transitions. [2022-01-19 00:33:14,026 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635467980295566 [2022-01-19 00:33:14,026 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2790 transitions. [2022-01-19 00:33:14,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2790 transitions. [2022-01-19 00:33:14,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:14,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2790 transitions. [2022-01-19 00:33:14,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.85714285714286) internal successors, (2790), 21 states have internal predecessors, (2790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:14,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:14,031 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:14,031 INFO L186 Difference]: Start difference. First operand has 334 places, 267 transitions, 2231 flow. Second operand 21 states and 2790 transitions. [2022-01-19 00:33:14,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 310 transitions, 3066 flow [2022-01-19 00:33:14,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 310 transitions, 2939 flow, removed 26 selfloop flow, removed 8 redundant places. [2022-01-19 00:33:14,082 INFO L242 Difference]: Finished difference. Result has 346 places, 258 transitions, 2031 flow [2022-01-19 00:33:14,083 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2130, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2031, PETRI_PLACES=346, PETRI_TRANSITIONS=258} [2022-01-19 00:33:14,083 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 189 predicate places. [2022-01-19 00:33:14,083 INFO L470 AbstractCegarLoop]: Abstraction has has 346 places, 258 transitions, 2031 flow [2022-01-19 00:33:14,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:14,084 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:14,084 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] [2022-01-19 00:33:14,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-19 00:33:14,084 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:14,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:14,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1927747958, now seen corresponding path program 14 times [2022-01-19 00:33:14,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:14,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879802708] [2022-01-19 00:33:14,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:14,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:14,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:14,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:14,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:14,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879802708] [2022-01-19 00:33:14,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879802708] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:14,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:14,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:14,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13896649] [2022-01-19 00:33:14,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:14,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:14,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:14,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:14,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:14,182 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:14,183 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 258 transitions, 2031 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:14,183 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:14,183 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:14,183 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:14,670 INFO L129 PetriNetUnfolder]: 309/1672 cut-off events. [2022-01-19 00:33:14,670 INFO L130 PetriNetUnfolder]: For 9541/9622 co-relation queries the response was YES. [2022-01-19 00:33:14,680 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6333 conditions, 1672 events. 309/1672 cut-off events. For 9541/9622 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12976 event pairs, 224 based on Foata normal form. 3/1612 useless extension candidates. Maximal degree in co-relation 6230. Up to 722 conditions per place. [2022-01-19 00:33:14,683 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 82 selfloop transitions, 14 changer transitions 43/288 dead transitions. [2022-01-19 00:33:14,683 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 288 transitions, 2632 flow [2022-01-19 00:33:14,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 00:33:14,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 00:33:14,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2910 transitions. [2022-01-19 00:33:14,693 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7601880877742947 [2022-01-19 00:33:14,693 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2910 transitions. [2022-01-19 00:33:14,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2910 transitions. [2022-01-19 00:33:14,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:14,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2910 transitions. [2022-01-19 00:33:14,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.27272727272728) internal successors, (2910), 22 states have internal predecessors, (2910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:14,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:14,698 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:14,698 INFO L186 Difference]: Start difference. First operand has 346 places, 258 transitions, 2031 flow. Second operand 22 states and 2910 transitions. [2022-01-19 00:33:14,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 288 transitions, 2632 flow [2022-01-19 00:33:14,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 288 transitions, 2447 flow, removed 38 selfloop flow, removed 26 redundant places. [2022-01-19 00:33:14,738 INFO L242 Difference]: Finished difference. Result has 329 places, 235 transitions, 1594 flow [2022-01-19 00:33:14,738 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1890, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1594, PETRI_PLACES=329, PETRI_TRANSITIONS=235} [2022-01-19 00:33:14,739 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 172 predicate places. [2022-01-19 00:33:14,739 INFO L470 AbstractCegarLoop]: Abstraction has has 329 places, 235 transitions, 1594 flow [2022-01-19 00:33:14,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:14,739 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:14,739 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] [2022-01-19 00:33:14,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-19 00:33:14,739 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:14,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:14,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1376564854, now seen corresponding path program 15 times [2022-01-19 00:33:14,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:14,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986975332] [2022-01-19 00:33:14,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:14,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:14,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:14,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:14,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986975332] [2022-01-19 00:33:14,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986975332] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:14,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:14,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:14,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959104072] [2022-01-19 00:33:14,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:14,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:14,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:14,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:14,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:14,837 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:14,838 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 235 transitions, 1594 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:14,838 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:14,838 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:14,838 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:15,283 INFO L129 PetriNetUnfolder]: 318/1696 cut-off events. [2022-01-19 00:33:15,284 INFO L130 PetriNetUnfolder]: For 9351/9426 co-relation queries the response was YES. [2022-01-19 00:33:15,294 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6412 conditions, 1696 events. 318/1696 cut-off events. For 9351/9426 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 13162 event pairs, 234 based on Foata normal form. 1/1633 useless extension candidates. Maximal degree in co-relation 6318. Up to 722 conditions per place. [2022-01-19 00:33:15,298 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 87 selfloop transitions, 26 changer transitions 35/297 dead transitions. [2022-01-19 00:33:15,298 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 297 transitions, 2701 flow [2022-01-19 00:33:15,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 00:33:15,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 00:33:15,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3186 transitions. [2022-01-19 00:33:15,301 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629310344827587 [2022-01-19 00:33:15,301 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3186 transitions. [2022-01-19 00:33:15,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3186 transitions. [2022-01-19 00:33:15,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:15,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3186 transitions. [2022-01-19 00:33:15,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.75) internal successors, (3186), 24 states have internal predecessors, (3186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:15,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 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 00:33:15,307 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 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 00:33:15,307 INFO L186 Difference]: Start difference. First operand has 329 places, 235 transitions, 1594 flow. Second operand 24 states and 3186 transitions. [2022-01-19 00:33:15,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 297 transitions, 2701 flow [2022-01-19 00:33:15,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 297 transitions, 2454 flow, removed 43 selfloop flow, removed 23 redundant places. [2022-01-19 00:33:15,346 INFO L242 Difference]: Finished difference. Result has 311 places, 246 transitions, 1738 flow [2022-01-19 00:33:15,346 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1488, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1738, PETRI_PLACES=311, PETRI_TRANSITIONS=246} [2022-01-19 00:33:15,347 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 154 predicate places. [2022-01-19 00:33:15,347 INFO L470 AbstractCegarLoop]: Abstraction has has 311 places, 246 transitions, 1738 flow [2022-01-19 00:33:15,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:15,347 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:15,348 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:15,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-19 00:33:15,348 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:15,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:15,348 INFO L85 PathProgramCache]: Analyzing trace with hash 207788190, now seen corresponding path program 16 times [2022-01-19 00:33:15,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:15,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540751484] [2022-01-19 00:33:15,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:15,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:15,436 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 00:33:15,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:15,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540751484] [2022-01-19 00:33:15,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540751484] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:15,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:15,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:15,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326971662] [2022-01-19 00:33:15,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:15,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:15,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:15,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:15,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:15,439 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:15,440 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 246 transitions, 1738 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:15,440 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:15,440 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:15,440 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:15,893 INFO L129 PetriNetUnfolder]: 314/1691 cut-off events. [2022-01-19 00:33:15,893 INFO L130 PetriNetUnfolder]: For 8770/8844 co-relation queries the response was YES. [2022-01-19 00:33:15,901 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6343 conditions, 1691 events. 314/1691 cut-off events. For 8770/8844 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 13201 event pairs, 230 based on Foata normal form. 3/1630 useless extension candidates. Maximal degree in co-relation 6250. Up to 724 conditions per place. [2022-01-19 00:33:15,904 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 86 selfloop transitions, 28 changer transitions 36/299 dead transitions. [2022-01-19 00:33:15,904 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 299 transitions, 2714 flow [2022-01-19 00:33:15,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-19 00:33:15,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-01-19 00:33:15,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3055 transitions. [2022-01-19 00:33:15,906 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763368315842079 [2022-01-19 00:33:15,906 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3055 transitions. [2022-01-19 00:33:15,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3055 transitions. [2022-01-19 00:33:15,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:15,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3055 transitions. [2022-01-19 00:33:15,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.82608695652175) internal successors, (3055), 23 states have internal predecessors, (3055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:15,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:15,912 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:15,912 INFO L186 Difference]: Start difference. First operand has 311 places, 246 transitions, 1738 flow. Second operand 23 states and 3055 transitions. [2022-01-19 00:33:15,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 299 transitions, 2714 flow [2022-01-19 00:33:15,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 299 transitions, 2611 flow, removed 46 selfloop flow, removed 12 redundant places. [2022-01-19 00:33:15,954 INFO L242 Difference]: Finished difference. Result has 322 places, 250 transitions, 1880 flow [2022-01-19 00:33:15,954 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1698, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1880, PETRI_PLACES=322, PETRI_TRANSITIONS=250} [2022-01-19 00:33:15,955 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 165 predicate places. [2022-01-19 00:33:15,955 INFO L470 AbstractCegarLoop]: Abstraction has has 322 places, 250 transitions, 1880 flow [2022-01-19 00:33:15,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:15,955 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:15,955 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:15,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-19 00:33:15,955 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:15,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:15,956 INFO L85 PathProgramCache]: Analyzing trace with hash 305216672, now seen corresponding path program 17 times [2022-01-19 00:33:15,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:15,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952989529] [2022-01-19 00:33:15,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:15,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:16,041 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 00:33:16,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:16,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952989529] [2022-01-19 00:33:16,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952989529] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:16,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:16,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:16,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925962213] [2022-01-19 00:33:16,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:16,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:16,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:16,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:16,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:16,043 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:16,044 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 250 transitions, 1880 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:16,044 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:16,044 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:16,044 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:16,497 INFO L129 PetriNetUnfolder]: 310/1678 cut-off events. [2022-01-19 00:33:16,497 INFO L130 PetriNetUnfolder]: For 8984/9059 co-relation queries the response was YES. [2022-01-19 00:33:16,508 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6296 conditions, 1678 events. 310/1678 cut-off events. For 8984/9059 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13060 event pairs, 232 based on Foata normal form. 1/1615 useless extension candidates. Maximal degree in co-relation 6198. Up to 722 conditions per place. [2022-01-19 00:33:16,512 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 85 selfloop transitions, 30 changer transitions 30/294 dead transitions. [2022-01-19 00:33:16,512 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 294 transitions, 2745 flow [2022-01-19 00:33:16,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 00:33:16,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 00:33:16,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2664 transitions. [2022-01-19 00:33:16,528 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655172413793103 [2022-01-19 00:33:16,528 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2664 transitions. [2022-01-19 00:33:16,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2664 transitions. [2022-01-19 00:33:16,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:16,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2664 transitions. [2022-01-19 00:33:16,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.2) internal successors, (2664), 20 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:16,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:16,532 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:16,532 INFO L186 Difference]: Start difference. First operand has 322 places, 250 transitions, 1880 flow. Second operand 20 states and 2664 transitions. [2022-01-19 00:33:16,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 294 transitions, 2745 flow [2022-01-19 00:33:16,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 294 transitions, 2597 flow, removed 52 selfloop flow, removed 14 redundant places. [2022-01-19 00:33:16,572 INFO L242 Difference]: Finished difference. Result has 322 places, 257 transitions, 1994 flow [2022-01-19 00:33:16,573 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1801, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1994, PETRI_PLACES=322, PETRI_TRANSITIONS=257} [2022-01-19 00:33:16,573 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 165 predicate places. [2022-01-19 00:33:16,573 INFO L470 AbstractCegarLoop]: Abstraction has has 322 places, 257 transitions, 1994 flow [2022-01-19 00:33:16,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:16,573 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:16,573 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:16,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-19 00:33:16,574 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:16,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:16,574 INFO L85 PathProgramCache]: Analyzing trace with hash -547353468, now seen corresponding path program 18 times [2022-01-19 00:33:16,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:16,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843076317] [2022-01-19 00:33:16,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:16,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:16,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:16,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:16,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843076317] [2022-01-19 00:33:16,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843076317] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:16,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:16,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:16,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856561451] [2022-01-19 00:33:16,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:16,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:16,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:16,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:16,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:16,676 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:16,677 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 257 transitions, 1994 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:16,677 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:16,677 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:16,677 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:17,149 INFO L129 PetriNetUnfolder]: 313/1688 cut-off events. [2022-01-19 00:33:17,149 INFO L130 PetriNetUnfolder]: For 9095/9170 co-relation queries the response was YES. [2022-01-19 00:33:17,163 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6396 conditions, 1688 events. 313/1688 cut-off events. For 9095/9170 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13159 event pairs, 232 based on Foata normal form. 1/1625 useless extension candidates. Maximal degree in co-relation 6301. Up to 722 conditions per place. [2022-01-19 00:33:17,167 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 85 selfloop transitions, 38 changer transitions 30/302 dead transitions. [2022-01-19 00:33:17,167 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 302 transitions, 2908 flow [2022-01-19 00:33:17,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-19 00:33:17,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-19 00:33:17,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2533 transitions. [2022-01-19 00:33:17,169 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7661826981246219 [2022-01-19 00:33:17,169 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2533 transitions. [2022-01-19 00:33:17,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2533 transitions. [2022-01-19 00:33:17,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:17,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2533 transitions. [2022-01-19 00:33:17,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.31578947368422) internal successors, (2533), 19 states have internal predecessors, (2533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:17,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:17,174 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:17,174 INFO L186 Difference]: Start difference. First operand has 322 places, 257 transitions, 1994 flow. Second operand 19 states and 2533 transitions. [2022-01-19 00:33:17,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 302 transitions, 2908 flow [2022-01-19 00:33:17,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 302 transitions, 2789 flow, removed 37 selfloop flow, removed 7 redundant places. [2022-01-19 00:33:17,216 INFO L242 Difference]: Finished difference. Result has 333 places, 265 transitions, 2172 flow [2022-01-19 00:33:17,216 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1921, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2172, PETRI_PLACES=333, PETRI_TRANSITIONS=265} [2022-01-19 00:33:17,216 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 176 predicate places. [2022-01-19 00:33:17,217 INFO L470 AbstractCegarLoop]: Abstraction has has 333 places, 265 transitions, 2172 flow [2022-01-19 00:33:17,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:17,217 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:17,217 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:17,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-19 00:33:17,218 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:17,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:17,218 INFO L85 PathProgramCache]: Analyzing trace with hash -123208248, now seen corresponding path program 19 times [2022-01-19 00:33:17,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:17,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066684178] [2022-01-19 00:33:17,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:17,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:17,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:17,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:17,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066684178] [2022-01-19 00:33:17,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066684178] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:17,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:17,320 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:17,320 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151819524] [2022-01-19 00:33:17,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:17,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:17,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:17,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:17,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:17,323 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:17,324 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 265 transitions, 2172 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:17,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:17,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:17,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:17,823 INFO L129 PetriNetUnfolder]: 310/1695 cut-off events. [2022-01-19 00:33:17,824 INFO L130 PetriNetUnfolder]: For 9184/9259 co-relation queries the response was YES. [2022-01-19 00:33:17,835 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6420 conditions, 1695 events. 310/1695 cut-off events. For 9184/9259 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13208 event pairs, 231 based on Foata normal form. 1/1632 useless extension candidates. Maximal degree in co-relation 6319. Up to 722 conditions per place. [2022-01-19 00:33:17,838 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 92 selfloop transitions, 34 changer transitions 31/306 dead transitions. [2022-01-19 00:33:17,838 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 306 transitions, 3048 flow [2022-01-19 00:33:17,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 00:33:17,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 00:33:17,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2664 transitions. [2022-01-19 00:33:17,849 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655172413793103 [2022-01-19 00:33:17,850 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2664 transitions. [2022-01-19 00:33:17,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2664 transitions. [2022-01-19 00:33:17,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:17,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2664 transitions. [2022-01-19 00:33:17,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.2) internal successors, (2664), 20 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:17,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:17,858 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:17,858 INFO L186 Difference]: Start difference. First operand has 333 places, 265 transitions, 2172 flow. Second operand 20 states and 2664 transitions. [2022-01-19 00:33:17,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 306 transitions, 3048 flow [2022-01-19 00:33:17,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 306 transitions, 2928 flow, removed 23 selfloop flow, removed 9 redundant places. [2022-01-19 00:33:17,907 INFO L242 Difference]: Finished difference. Result has 343 places, 269 transitions, 2265 flow [2022-01-19 00:33:17,908 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2088, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2265, PETRI_PLACES=343, PETRI_TRANSITIONS=269} [2022-01-19 00:33:17,908 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 186 predicate places. [2022-01-19 00:33:17,908 INFO L470 AbstractCegarLoop]: Abstraction has has 343 places, 269 transitions, 2265 flow [2022-01-19 00:33:17,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:17,909 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:17,909 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] [2022-01-19 00:33:17,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-19 00:33:17,909 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:17,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:17,909 INFO L85 PathProgramCache]: Analyzing trace with hash -85099410, now seen corresponding path program 20 times [2022-01-19 00:33:17,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:17,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266321640] [2022-01-19 00:33:17,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:17,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:17,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:17,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:17,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:17,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266321640] [2022-01-19 00:33:17,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266321640] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:17,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:17,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:17,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724062582] [2022-01-19 00:33:17,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:17,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:17,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:17,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:17,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:17,992 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:17,993 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 269 transitions, 2265 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:17,993 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:17,993 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:17,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:18,450 INFO L129 PetriNetUnfolder]: 305/1689 cut-off events. [2022-01-19 00:33:18,450 INFO L130 PetriNetUnfolder]: For 9041/9116 co-relation queries the response was YES. [2022-01-19 00:33:18,462 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6319 conditions, 1689 events. 305/1689 cut-off events. For 9041/9116 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 13211 event pairs, 232 based on Foata normal form. 1/1625 useless extension candidates. Maximal degree in co-relation 6214. Up to 722 conditions per place. [2022-01-19 00:33:18,465 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 88 selfloop transitions, 19 changer transitions 44/300 dead transitions. [2022-01-19 00:33:18,465 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 300 transitions, 2909 flow [2022-01-19 00:33:18,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 00:33:18,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 00:33:18,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2663 transitions. [2022-01-19 00:33:18,468 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7652298850574712 [2022-01-19 00:33:18,469 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2663 transitions. [2022-01-19 00:33:18,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2663 transitions. [2022-01-19 00:33:18,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:18,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2663 transitions. [2022-01-19 00:33:18,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.15) internal successors, (2663), 20 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:18,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:18,472 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:18,472 INFO L186 Difference]: Start difference. First operand has 343 places, 269 transitions, 2265 flow. Second operand 20 states and 2663 transitions. [2022-01-19 00:33:18,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 300 transitions, 2909 flow [2022-01-19 00:33:18,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 300 transitions, 2812 flow, removed 27 selfloop flow, removed 7 redundant places. [2022-01-19 00:33:18,513 INFO L242 Difference]: Finished difference. Result has 352 places, 252 transitions, 1935 flow [2022-01-19 00:33:18,513 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2184, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1935, PETRI_PLACES=352, PETRI_TRANSITIONS=252} [2022-01-19 00:33:18,513 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 195 predicate places. [2022-01-19 00:33:18,513 INFO L470 AbstractCegarLoop]: Abstraction has has 352 places, 252 transitions, 1935 flow [2022-01-19 00:33:18,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:18,514 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:18,514 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:18,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-19 00:33:18,514 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:18,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:18,514 INFO L85 PathProgramCache]: Analyzing trace with hash 222130868, now seen corresponding path program 21 times [2022-01-19 00:33:18,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:18,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103908724] [2022-01-19 00:33:18,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:18,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:18,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:18,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:18,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103908724] [2022-01-19 00:33:18,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103908724] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:18,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:18,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:18,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256606805] [2022-01-19 00:33:18,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:18,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:18,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:18,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:18,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:18,603 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:18,604 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 252 transitions, 1935 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:18,604 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:18,604 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:18,604 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:19,026 INFO L129 PetriNetUnfolder]: 300/1664 cut-off events. [2022-01-19 00:33:19,026 INFO L130 PetriNetUnfolder]: For 8941/9015 co-relation queries the response was YES. [2022-01-19 00:33:19,037 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6189 conditions, 1664 events. 300/1664 cut-off events. For 8941/9015 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12991 event pairs, 227 based on Foata normal form. 3/1603 useless extension candidates. Maximal degree in co-relation 6081. Up to 724 conditions per place. [2022-01-19 00:33:19,039 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 78 selfloop transitions, 20 changer transitions 40/287 dead transitions. [2022-01-19 00:33:19,040 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 349 places, 287 transitions, 2635 flow [2022-01-19 00:33:19,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 00:33:19,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 00:33:19,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2919 transitions. [2022-01-19 00:33:19,041 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.762539184952978 [2022-01-19 00:33:19,041 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2919 transitions. [2022-01-19 00:33:19,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2919 transitions. [2022-01-19 00:33:19,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:19,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2919 transitions. [2022-01-19 00:33:19,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.6818181818182) internal successors, (2919), 22 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 00:33:19,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:19,046 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:19,046 INFO L186 Difference]: Start difference. First operand has 352 places, 252 transitions, 1935 flow. Second operand 22 states and 2919 transitions. [2022-01-19 00:33:19,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 349 places, 287 transitions, 2635 flow [2022-01-19 00:33:19,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 287 transitions, 2434 flow, removed 32 selfloop flow, removed 26 redundant places. [2022-01-19 00:33:19,082 INFO L242 Difference]: Finished difference. Result has 333 places, 243 transitions, 1714 flow [2022-01-19 00:33:19,082 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1801, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1714, PETRI_PLACES=333, PETRI_TRANSITIONS=243} [2022-01-19 00:33:19,082 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 176 predicate places. [2022-01-19 00:33:19,083 INFO L470 AbstractCegarLoop]: Abstraction has has 333 places, 243 transitions, 1714 flow [2022-01-19 00:33:19,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:19,083 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:19,083 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:19,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-19 00:33:19,083 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:19,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:19,083 INFO L85 PathProgramCache]: Analyzing trace with hash 783451192, now seen corresponding path program 22 times [2022-01-19 00:33:19,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:19,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376206450] [2022-01-19 00:33:19,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:19,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:19,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:19,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:19,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:19,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376206450] [2022-01-19 00:33:19,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376206450] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:19,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:19,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:19,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509444938] [2022-01-19 00:33:19,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:19,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:19,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:19,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:19,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:19,169 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:19,170 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 243 transitions, 1714 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:19,170 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:19,170 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:19,170 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:19,569 INFO L129 PetriNetUnfolder]: 287/1613 cut-off events. [2022-01-19 00:33:19,569 INFO L130 PetriNetUnfolder]: For 8051/8125 co-relation queries the response was YES. [2022-01-19 00:33:19,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5789 conditions, 1613 events. 287/1613 cut-off events. For 8051/8125 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12490 event pairs, 225 based on Foata normal form. 3/1554 useless extension candidates. Maximal degree in co-relation 5688. Up to 711 conditions per place. [2022-01-19 00:33:19,583 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 67 selfloop transitions, 4 changer transitions 44/264 dead transitions. [2022-01-19 00:33:19,583 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 264 transitions, 2134 flow [2022-01-19 00:33:19,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 00:33:19,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 00:33:19,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2778 transitions. [2022-01-19 00:33:19,586 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7602627257799671 [2022-01-19 00:33:19,586 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2778 transitions. [2022-01-19 00:33:19,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2778 transitions. [2022-01-19 00:33:19,587 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:19,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2778 transitions. [2022-01-19 00:33:19,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.28571428571428) internal successors, (2778), 21 states have internal predecessors, (2778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:19,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:19,590 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:19,591 INFO L186 Difference]: Start difference. First operand has 333 places, 243 transitions, 1714 flow. Second operand 21 states and 2778 transitions. [2022-01-19 00:33:19,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 264 transitions, 2134 flow [2022-01-19 00:33:19,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 264 transitions, 2013 flow, removed 28 selfloop flow, removed 23 redundant places. [2022-01-19 00:33:19,625 INFO L242 Difference]: Finished difference. Result has 315 places, 216 transitions, 1261 flow [2022-01-19 00:33:19,626 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1616, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1261, PETRI_PLACES=315, PETRI_TRANSITIONS=216} [2022-01-19 00:33:19,628 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 158 predicate places. [2022-01-19 00:33:19,628 INFO L470 AbstractCegarLoop]: Abstraction has has 315 places, 216 transitions, 1261 flow [2022-01-19 00:33:19,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:19,628 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:19,628 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] [2022-01-19 00:33:19,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-19 00:33:19,629 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:19,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:19,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1867892242, now seen corresponding path program 23 times [2022-01-19 00:33:19,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:19,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917124734] [2022-01-19 00:33:19,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:19,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:19,717 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 00:33:19,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:19,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917124734] [2022-01-19 00:33:19,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917124734] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:19,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:19,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:19,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890060412] [2022-01-19 00:33:19,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:19,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:19,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:19,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:19,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:19,719 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:19,719 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 216 transitions, 1261 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:19,719 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:19,719 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:19,719 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:20,168 INFO L129 PetriNetUnfolder]: 304/1667 cut-off events. [2022-01-19 00:33:20,168 INFO L130 PetriNetUnfolder]: For 8039/8111 co-relation queries the response was YES. [2022-01-19 00:33:20,176 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5930 conditions, 1667 events. 304/1667 cut-off events. For 8039/8111 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12910 event pairs, 225 based on Foata normal form. 1/1610 useless extension candidates. Maximal degree in co-relation 5841. Up to 719 conditions per place. [2022-01-19 00:33:20,179 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 81 selfloop transitions, 23 changer transitions 42/295 dead transitions. [2022-01-19 00:33:20,179 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 295 transitions, 2433 flow [2022-01-19 00:33:20,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 00:33:20,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 00:33:20,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3705 transitions. [2022-01-19 00:33:20,181 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7604679802955665 [2022-01-19 00:33:20,181 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3705 transitions. [2022-01-19 00:33:20,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3705 transitions. [2022-01-19 00:33:20,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:20,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3705 transitions. [2022-01-19 00:33:20,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.32142857142858) internal successors, (3705), 28 states have internal predecessors, (3705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:20,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:20,187 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:20,187 INFO L186 Difference]: Start difference. First operand has 315 places, 216 transitions, 1261 flow. Second operand 28 states and 3705 transitions. [2022-01-19 00:33:20,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 295 transitions, 2433 flow [2022-01-19 00:33:20,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 295 transitions, 2284 flow, removed 40 selfloop flow, removed 21 redundant places. [2022-01-19 00:33:20,213 INFO L242 Difference]: Finished difference. Result has 302 places, 229 transitions, 1462 flow [2022-01-19 00:33:20,213 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1209, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1462, PETRI_PLACES=302, PETRI_TRANSITIONS=229} [2022-01-19 00:33:20,213 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 145 predicate places. [2022-01-19 00:33:20,213 INFO L470 AbstractCegarLoop]: Abstraction has has 302 places, 229 transitions, 1462 flow [2022-01-19 00:33:20,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:20,214 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:20,214 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:20,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-19 00:33:20,214 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:20,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:20,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1891662696, now seen corresponding path program 24 times [2022-01-19 00:33:20,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:20,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185267296] [2022-01-19 00:33:20,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:20,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:20,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:20,294 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 00:33:20,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:20,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185267296] [2022-01-19 00:33:20,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185267296] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:20,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:20,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:20,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494139689] [2022-01-19 00:33:20,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:20,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:20,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:20,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:20,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:20,296 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:20,296 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 229 transitions, 1462 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:20,296 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:20,296 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:20,296 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:20,789 INFO L129 PetriNetUnfolder]: 301/1661 cut-off events. [2022-01-19 00:33:20,789 INFO L130 PetriNetUnfolder]: For 8174/8246 co-relation queries the response was YES. [2022-01-19 00:33:20,801 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5995 conditions, 1661 events. 301/1661 cut-off events. For 8174/8246 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12859 event pairs, 228 based on Foata normal form. 1/1599 useless extension candidates. Maximal degree in co-relation 5902. Up to 717 conditions per place. [2022-01-19 00:33:20,804 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 77 selfloop transitions, 25 changer transitions 42/293 dead transitions. [2022-01-19 00:33:20,804 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 293 transitions, 2560 flow [2022-01-19 00:33:20,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 00:33:20,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 00:33:20,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3572 transitions. [2022-01-19 00:33:20,806 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7603235419327373 [2022-01-19 00:33:20,806 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3572 transitions. [2022-01-19 00:33:20,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3572 transitions. [2022-01-19 00:33:20,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:20,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3572 transitions. [2022-01-19 00:33:20,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.2962962962963) internal successors, (3572), 27 states have internal predecessors, (3572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:20,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:20,811 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:20,811 INFO L186 Difference]: Start difference. First operand has 302 places, 229 transitions, 1462 flow. Second operand 27 states and 3572 transitions. [2022-01-19 00:33:20,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 293 transitions, 2560 flow [2022-01-19 00:33:20,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 293 transitions, 2398 flow, removed 73 selfloop flow, removed 17 redundant places. [2022-01-19 00:33:20,843 INFO L242 Difference]: Finished difference. Result has 313 places, 233 transitions, 1608 flow [2022-01-19 00:33:20,843 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1608, PETRI_PLACES=313, PETRI_TRANSITIONS=233} [2022-01-19 00:33:20,843 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 156 predicate places. [2022-01-19 00:33:20,844 INFO L470 AbstractCegarLoop]: Abstraction has has 313 places, 233 transitions, 1608 flow [2022-01-19 00:33:20,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:20,844 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:20,844 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:20,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-19 00:33:20,844 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:20,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:20,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1489406044, now seen corresponding path program 25 times [2022-01-19 00:33:20,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:20,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420112558] [2022-01-19 00:33:20,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:20,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:20,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:20,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:20,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420112558] [2022-01-19 00:33:20,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420112558] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:20,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:20,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:20,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689011924] [2022-01-19 00:33:20,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:20,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:20,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:20,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:20,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:20,927 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:20,928 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 233 transitions, 1608 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:20,928 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:20,928 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:20,928 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:21,366 INFO L129 PetriNetUnfolder]: 296/1635 cut-off events. [2022-01-19 00:33:21,366 INFO L130 PetriNetUnfolder]: For 8844/8916 co-relation queries the response was YES. [2022-01-19 00:33:21,378 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6035 conditions, 1635 events. 296/1635 cut-off events. For 8844/8916 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12597 event pairs, 223 based on Foata normal form. 1/1574 useless extension candidates. Maximal degree in co-relation 5936. Up to 719 conditions per place. [2022-01-19 00:33:21,381 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 79 selfloop transitions, 27 changer transitions 37/292 dead transitions. [2022-01-19 00:33:21,381 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 292 transitions, 2659 flow [2022-01-19 00:33:21,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 00:33:21,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 00:33:21,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3183 transitions. [2022-01-19 00:33:21,432 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7622126436781609 [2022-01-19 00:33:21,432 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3183 transitions. [2022-01-19 00:33:21,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3183 transitions. [2022-01-19 00:33:21,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:21,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3183 transitions. [2022-01-19 00:33:21,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.625) internal successors, (3183), 24 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:21,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 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 00:33:21,437 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 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 00:33:21,437 INFO L186 Difference]: Start difference. First operand has 313 places, 233 transitions, 1608 flow. Second operand 24 states and 3183 transitions. [2022-01-19 00:33:21,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 292 transitions, 2659 flow [2022-01-19 00:33:21,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 292 transitions, 2435 flow, removed 93 selfloop flow, removed 20 redundant places. [2022-01-19 00:33:21,468 INFO L242 Difference]: Finished difference. Result has 312 places, 240 transitions, 1718 flow [2022-01-19 00:33:21,468 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1513, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1718, PETRI_PLACES=312, PETRI_TRANSITIONS=240} [2022-01-19 00:33:21,468 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 155 predicate places. [2022-01-19 00:33:21,468 INFO L470 AbstractCegarLoop]: Abstraction has has 312 places, 240 transitions, 1718 flow [2022-01-19 00:33:21,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:21,469 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:21,469 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] [2022-01-19 00:33:21,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-19 00:33:21,469 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:21,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:21,469 INFO L85 PathProgramCache]: Analyzing trace with hash -647839046, now seen corresponding path program 26 times [2022-01-19 00:33:21,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:21,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546622775] [2022-01-19 00:33:21,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:21,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:21,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:21,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:21,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:21,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546622775] [2022-01-19 00:33:21,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546622775] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:21,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:21,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:21,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194137864] [2022-01-19 00:33:21,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:21,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:21,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:21,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:21,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:21,564 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:21,565 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 240 transitions, 1718 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:21,565 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:21,565 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:21,565 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:22,060 INFO L129 PetriNetUnfolder]: 305/1669 cut-off events. [2022-01-19 00:33:22,061 INFO L130 PetriNetUnfolder]: For 8134/8206 co-relation queries the response was YES. [2022-01-19 00:33:22,073 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6144 conditions, 1669 events. 305/1669 cut-off events. For 8134/8206 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12936 event pairs, 231 based on Foata normal form. 1/1606 useless extension candidates. Maximal degree in co-relation 6048. Up to 725 conditions per place. [2022-01-19 00:33:22,076 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 76 selfloop transitions, 37 changer transitions 36/298 dead transitions. [2022-01-19 00:33:22,076 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 298 transitions, 2788 flow [2022-01-19 00:33:22,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-19 00:33:22,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-01-19 00:33:22,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3050 transitions. [2022-01-19 00:33:22,078 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7621189405297352 [2022-01-19 00:33:22,078 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3050 transitions. [2022-01-19 00:33:22,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3050 transitions. [2022-01-19 00:33:22,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:22,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3050 transitions. [2022-01-19 00:33:22,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.6086956521739) internal successors, (3050), 23 states have internal predecessors, (3050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:22,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:22,082 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:22,082 INFO L186 Difference]: Start difference. First operand has 312 places, 240 transitions, 1718 flow. Second operand 23 states and 3050 transitions. [2022-01-19 00:33:22,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 298 transitions, 2788 flow [2022-01-19 00:33:22,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 298 transitions, 2608 flow, removed 73 selfloop flow, removed 13 redundant places. [2022-01-19 00:33:22,117 INFO L242 Difference]: Finished difference. Result has 322 places, 250 transitions, 1926 flow [2022-01-19 00:33:22,117 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1637, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1926, PETRI_PLACES=322, PETRI_TRANSITIONS=250} [2022-01-19 00:33:22,117 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 165 predicate places. [2022-01-19 00:33:22,117 INFO L470 AbstractCegarLoop]: Abstraction has has 322 places, 250 transitions, 1926 flow [2022-01-19 00:33:22,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:22,118 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:22,118 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:22,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-19 00:33:22,118 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:22,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:22,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1822088480, now seen corresponding path program 27 times [2022-01-19 00:33:22,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:22,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350988827] [2022-01-19 00:33:22,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:22,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:22,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:22,203 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 00:33:22,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:22,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350988827] [2022-01-19 00:33:22,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350988827] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:22,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:22,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:22,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678853490] [2022-01-19 00:33:22,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:22,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:22,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:22,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:22,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:22,204 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:22,205 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 250 transitions, 1926 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:22,205 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:22,205 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:22,205 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:22,645 INFO L129 PetriNetUnfolder]: 302/1653 cut-off events. [2022-01-19 00:33:22,646 INFO L130 PetriNetUnfolder]: For 8380/8452 co-relation queries the response was YES. [2022-01-19 00:33:22,657 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6174 conditions, 1653 events. 302/1653 cut-off events. For 8380/8452 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12773 event pairs, 226 based on Foata normal form. 1/1591 useless extension candidates. Maximal degree in co-relation 6073. Up to 723 conditions per place. [2022-01-19 00:33:22,660 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 85 selfloop transitions, 33 changer transitions 37/304 dead transitions. [2022-01-19 00:33:22,661 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 304 transitions, 3005 flow [2022-01-19 00:33:22,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 00:33:22,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 00:33:22,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3183 transitions. [2022-01-19 00:33:22,662 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7622126436781609 [2022-01-19 00:33:22,662 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3183 transitions. [2022-01-19 00:33:22,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3183 transitions. [2022-01-19 00:33:22,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:22,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3183 transitions. [2022-01-19 00:33:22,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.625) internal successors, (3183), 24 states have internal predecessors, (3183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:22,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 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 00:33:22,667 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 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 00:33:22,667 INFO L186 Difference]: Start difference. First operand has 322 places, 250 transitions, 1926 flow. Second operand 24 states and 3183 transitions. [2022-01-19 00:33:22,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 304 transitions, 3005 flow [2022-01-19 00:33:22,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 304 transitions, 2797 flow, removed 74 selfloop flow, removed 15 redundant places. [2022-01-19 00:33:22,700 INFO L242 Difference]: Finished difference. Result has 331 places, 254 transitions, 2023 flow [2022-01-19 00:33:22,701 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1834, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2023, PETRI_PLACES=331, PETRI_TRANSITIONS=254} [2022-01-19 00:33:22,701 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 174 predicate places. [2022-01-19 00:33:22,701 INFO L470 AbstractCegarLoop]: Abstraction has has 331 places, 254 transitions, 2023 flow [2022-01-19 00:33:22,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:22,701 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:22,701 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:22,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-19 00:33:22,702 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:22,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:22,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1024266032, now seen corresponding path program 28 times [2022-01-19 00:33:22,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:22,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424782392] [2022-01-19 00:33:22,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:22,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:22,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:22,786 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 00:33:22,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:22,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424782392] [2022-01-19 00:33:22,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424782392] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:22,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:22,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:22,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350043956] [2022-01-19 00:33:22,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:22,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:22,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:22,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:22,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:22,788 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:22,789 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 254 transitions, 2023 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:22,789 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:22,789 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:22,789 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:23,186 INFO L129 PetriNetUnfolder]: 297/1655 cut-off events. [2022-01-19 00:33:23,186 INFO L130 PetriNetUnfolder]: For 7977/8049 co-relation queries the response was YES. [2022-01-19 00:33:23,195 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6056 conditions, 1655 events. 297/1655 cut-off events. For 7977/8049 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12792 event pairs, 223 based on Foata normal form. 1/1594 useless extension candidates. Maximal degree in co-relation 5952. Up to 725 conditions per place. [2022-01-19 00:33:23,198 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 82 selfloop transitions, 35 changer transitions 32/298 dead transitions. [2022-01-19 00:33:23,198 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 298 transitions, 2863 flow [2022-01-19 00:33:23,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 00:33:23,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 00:33:23,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2661 transitions. [2022-01-19 00:33:23,200 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646551724137931 [2022-01-19 00:33:23,200 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2661 transitions. [2022-01-19 00:33:23,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2661 transitions. [2022-01-19 00:33:23,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:23,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2661 transitions. [2022-01-19 00:33:23,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.05) internal successors, (2661), 20 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:23,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:23,203 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:23,203 INFO L186 Difference]: Start difference. First operand has 331 places, 254 transitions, 2023 flow. Second operand 20 states and 2661 transitions. [2022-01-19 00:33:23,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 298 transitions, 2863 flow [2022-01-19 00:33:23,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 298 transitions, 2721 flow, removed 56 selfloop flow, removed 12 redundant places. [2022-01-19 00:33:23,232 INFO L242 Difference]: Finished difference. Result has 332 places, 261 transitions, 2146 flow [2022-01-19 00:33:23,233 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1940, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2146, PETRI_PLACES=332, PETRI_TRANSITIONS=261} [2022-01-19 00:33:23,233 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 175 predicate places. [2022-01-19 00:33:23,233 INFO L470 AbstractCegarLoop]: Abstraction has has 332 places, 261 transitions, 2146 flow [2022-01-19 00:33:23,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:23,233 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:23,233 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:23,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-19 00:33:23,233 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:23,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:23,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1918909020, now seen corresponding path program 29 times [2022-01-19 00:33:23,234 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:23,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586399602] [2022-01-19 00:33:23,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:23,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:23,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:23,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:23,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586399602] [2022-01-19 00:33:23,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586399602] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:23,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:23,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:23,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223637978] [2022-01-19 00:33:23,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:23,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:23,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:23,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:23,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:23,315 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:23,315 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 261 transitions, 2146 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:23,315 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:23,316 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:23,316 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:23,731 INFO L129 PetriNetUnfolder]: 294/1655 cut-off events. [2022-01-19 00:33:23,731 INFO L130 PetriNetUnfolder]: For 7297/7369 co-relation queries the response was YES. [2022-01-19 00:33:23,744 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5947 conditions, 1655 events. 294/1655 cut-off events. For 7297/7369 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12874 event pairs, 222 based on Foata normal form. 1/1593 useless extension candidates. Maximal degree in co-relation 5844. Up to 723 conditions per place. [2022-01-19 00:33:23,747 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 87 selfloop transitions, 35 changer transitions 31/302 dead transitions. [2022-01-19 00:33:23,747 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 302 transitions, 2990 flow [2022-01-19 00:33:23,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 00:33:23,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 00:33:23,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2661 transitions. [2022-01-19 00:33:23,748 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646551724137931 [2022-01-19 00:33:23,749 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2661 transitions. [2022-01-19 00:33:23,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2661 transitions. [2022-01-19 00:33:23,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:23,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2661 transitions. [2022-01-19 00:33:23,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.05) internal successors, (2661), 20 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:23,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:23,752 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:23,752 INFO L186 Difference]: Start difference. First operand has 332 places, 261 transitions, 2146 flow. Second operand 20 states and 2661 transitions. [2022-01-19 00:33:23,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 302 transitions, 2990 flow [2022-01-19 00:33:23,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 302 transitions, 2861 flow, removed 45 selfloop flow, removed 8 redundant places. [2022-01-19 00:33:23,782 INFO L242 Difference]: Finished difference. Result has 343 places, 267 transitions, 2261 flow [2022-01-19 00:33:23,782 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2060, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2261, PETRI_PLACES=343, PETRI_TRANSITIONS=267} [2022-01-19 00:33:23,783 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 186 predicate places. [2022-01-19 00:33:23,783 INFO L470 AbstractCegarLoop]: Abstraction has has 343 places, 267 transitions, 2261 flow [2022-01-19 00:33:23,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:23,783 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:23,783 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:23,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-19 00:33:23,783 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:23,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:23,784 INFO L85 PathProgramCache]: Analyzing trace with hash 74022096, now seen corresponding path program 30 times [2022-01-19 00:33:23,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:23,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525355667] [2022-01-19 00:33:23,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:23,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:23,861 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 00:33:23,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:23,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525355667] [2022-01-19 00:33:23,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525355667] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:23,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:23,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:23,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169132420] [2022-01-19 00:33:23,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:23,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:23,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:23,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:23,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:23,863 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:23,864 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 267 transitions, 2261 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:23,864 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:23,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:23,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:24,303 INFO L129 PetriNetUnfolder]: 297/1657 cut-off events. [2022-01-19 00:33:24,303 INFO L130 PetriNetUnfolder]: For 7430/7502 co-relation queries the response was YES. [2022-01-19 00:33:24,315 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6067 conditions, 1657 events. 297/1657 cut-off events. For 7430/7502 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12918 event pairs, 222 based on Foata normal form. 1/1595 useless extension candidates. Maximal degree in co-relation 5959. Up to 725 conditions per place. [2022-01-19 00:33:24,318 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 79 selfloop transitions, 51 changer transitions 31/310 dead transitions. [2022-01-19 00:33:24,318 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 310 transitions, 3190 flow [2022-01-19 00:33:24,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-19 00:33:24,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-19 00:33:24,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2528 transitions. [2022-01-19 00:33:24,320 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764670296430732 [2022-01-19 00:33:24,320 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2528 transitions. [2022-01-19 00:33:24,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2528 transitions. [2022-01-19 00:33:24,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:24,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2528 transitions. [2022-01-19 00:33:24,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.05263157894737) internal successors, (2528), 19 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:24,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:24,323 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:24,323 INFO L186 Difference]: Start difference. First operand has 343 places, 267 transitions, 2261 flow. Second operand 19 states and 2528 transitions. [2022-01-19 00:33:24,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 310 transitions, 3190 flow [2022-01-19 00:33:24,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 310 transitions, 3074 flow, removed 34 selfloop flow, removed 8 redundant places. [2022-01-19 00:33:24,358 INFO L242 Difference]: Finished difference. Result has 353 places, 275 transitions, 2478 flow [2022-01-19 00:33:24,358 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2185, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2478, PETRI_PLACES=353, PETRI_TRANSITIONS=275} [2022-01-19 00:33:24,358 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 196 predicate places. [2022-01-19 00:33:24,358 INFO L470 AbstractCegarLoop]: Abstraction has has 353 places, 275 transitions, 2478 flow [2022-01-19 00:33:24,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:24,359 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:24,359 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:24,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-19 00:33:24,359 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:24,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:24,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1781172522, now seen corresponding path program 31 times [2022-01-19 00:33:24,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:24,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055130846] [2022-01-19 00:33:24,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:24,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:24,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:24,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:24,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:24,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055130846] [2022-01-19 00:33:24,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055130846] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:24,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:24,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:24,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735537377] [2022-01-19 00:33:24,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:24,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:24,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:24,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:24,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:24,442 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:24,442 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 275 transitions, 2478 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:24,442 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:24,442 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:24,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:24,895 INFO L129 PetriNetUnfolder]: 294/1662 cut-off events. [2022-01-19 00:33:24,896 INFO L130 PetriNetUnfolder]: For 7631/7703 co-relation queries the response was YES. [2022-01-19 00:33:24,907 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6108 conditions, 1662 events. 294/1662 cut-off events. For 7631/7703 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12992 event pairs, 220 based on Foata normal form. 1/1600 useless extension candidates. Maximal degree in co-relation 5995. Up to 723 conditions per place. [2022-01-19 00:33:24,910 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 90 selfloop transitions, 43 changer transitions 32/314 dead transitions. [2022-01-19 00:33:24,910 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 314 transitions, 3373 flow [2022-01-19 00:33:24,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 00:33:24,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 00:33:24,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2659 transitions. [2022-01-19 00:33:24,912 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764080459770115 [2022-01-19 00:33:24,912 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2659 transitions. [2022-01-19 00:33:24,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2659 transitions. [2022-01-19 00:33:24,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:24,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2659 transitions. [2022-01-19 00:33:24,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.95) internal successors, (2659), 20 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:24,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:24,915 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:24,915 INFO L186 Difference]: Start difference. First operand has 353 places, 275 transitions, 2478 flow. Second operand 20 states and 2659 transitions. [2022-01-19 00:33:24,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 314 transitions, 3373 flow [2022-01-19 00:33:24,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 314 transitions, 3232 flow, removed 23 selfloop flow, removed 9 redundant places. [2022-01-19 00:33:24,959 INFO L242 Difference]: Finished difference. Result has 363 places, 279 transitions, 2576 flow [2022-01-19 00:33:24,959 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2373, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2576, PETRI_PLACES=363, PETRI_TRANSITIONS=279} [2022-01-19 00:33:24,959 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 206 predicate places. [2022-01-19 00:33:24,959 INFO L470 AbstractCegarLoop]: Abstraction has has 363 places, 279 transitions, 2576 flow [2022-01-19 00:33:24,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:24,960 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:24,960 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:24,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-19 00:33:24,960 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:24,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:24,962 INFO L85 PathProgramCache]: Analyzing trace with hash -2047896920, now seen corresponding path program 32 times [2022-01-19 00:33:24,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:24,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29319911] [2022-01-19 00:33:24,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:24,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:25,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:25,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:25,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29319911] [2022-01-19 00:33:25,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29319911] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:25,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:25,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:25,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863052502] [2022-01-19 00:33:25,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:25,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:25,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:25,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:25,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:25,055 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:25,056 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 279 transitions, 2576 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:25,056 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:25,056 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:25,056 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:25,513 INFO L129 PetriNetUnfolder]: 286/1651 cut-off events. [2022-01-19 00:33:25,513 INFO L130 PetriNetUnfolder]: For 7355/7427 co-relation queries the response was YES. [2022-01-19 00:33:25,527 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5942 conditions, 1651 events. 286/1651 cut-off events. For 7355/7427 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12929 event pairs, 219 based on Foata normal form. 1/1590 useless extension candidates. Maximal degree in co-relation 5825. Up to 718 conditions per place. [2022-01-19 00:33:25,531 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 88 selfloop transitions, 20 changer transitions 47/304 dead transitions. [2022-01-19 00:33:25,531 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 304 transitions, 3122 flow [2022-01-19 00:33:25,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-19 00:33:25,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-19 00:33:25,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2530 transitions. [2022-01-19 00:33:25,536 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7652752571082879 [2022-01-19 00:33:25,536 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2530 transitions. [2022-01-19 00:33:25,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2530 transitions. [2022-01-19 00:33:25,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:25,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2530 transitions. [2022-01-19 00:33:25,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.1578947368421) internal successors, (2530), 19 states have internal predecessors, (2530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:25,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:25,540 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:25,540 INFO L186 Difference]: Start difference. First operand has 363 places, 279 transitions, 2576 flow. Second operand 19 states and 2530 transitions. [2022-01-19 00:33:25,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 304 transitions, 3122 flow [2022-01-19 00:33:25,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 304 transitions, 3009 flow, removed 33 selfloop flow, removed 7 redundant places. [2022-01-19 00:33:25,579 INFO L242 Difference]: Finished difference. Result has 369 places, 255 transitions, 2103 flow [2022-01-19 00:33:25,579 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2471, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2103, PETRI_PLACES=369, PETRI_TRANSITIONS=255} [2022-01-19 00:33:25,580 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 212 predicate places. [2022-01-19 00:33:25,580 INFO L470 AbstractCegarLoop]: Abstraction has has 369 places, 255 transitions, 2103 flow [2022-01-19 00:33:25,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:25,580 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:25,580 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:25,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-19 00:33:25,580 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:25,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:25,581 INFO L85 PathProgramCache]: Analyzing trace with hash 440470920, now seen corresponding path program 33 times [2022-01-19 00:33:25,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:25,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762681433] [2022-01-19 00:33:25,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:25,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:25,665 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 00:33:25,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:25,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762681433] [2022-01-19 00:33:25,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762681433] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:25,665 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:25,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:25,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138541522] [2022-01-19 00:33:25,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:25,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:25,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:25,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:25,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:25,667 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:25,667 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 255 transitions, 2103 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:25,667 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:25,668 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:25,668 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:26,142 INFO L129 PetriNetUnfolder]: 282/1628 cut-off events. [2022-01-19 00:33:26,142 INFO L130 PetriNetUnfolder]: For 6620/6692 co-relation queries the response was YES. [2022-01-19 00:33:26,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5694 conditions, 1628 events. 282/1628 cut-off events. For 6620/6692 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12706 event pairs, 220 based on Foata normal form. 1/1566 useless extension candidates. Maximal degree in co-relation 5576. Up to 716 conditions per place. [2022-01-19 00:33:26,154 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 70 selfloop transitions, 28 changer transitions 41/288 dead transitions. [2022-01-19 00:33:26,154 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 288 transitions, 2775 flow [2022-01-19 00:33:26,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 00:33:26,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 00:33:26,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2915 transitions. [2022-01-19 00:33:26,155 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7614942528735632 [2022-01-19 00:33:26,156 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2915 transitions. [2022-01-19 00:33:26,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2915 transitions. [2022-01-19 00:33:26,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:26,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2915 transitions. [2022-01-19 00:33:26,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.5) internal successors, (2915), 22 states have internal predecessors, (2915), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:26,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:26,160 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:26,160 INFO L186 Difference]: Start difference. First operand has 369 places, 255 transitions, 2103 flow. Second operand 22 states and 2915 transitions. [2022-01-19 00:33:26,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 288 transitions, 2775 flow [2022-01-19 00:33:26,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 288 transitions, 2571 flow, removed 27 selfloop flow, removed 24 redundant places. [2022-01-19 00:33:26,193 INFO L242 Difference]: Finished difference. Result has 347 places, 246 transitions, 1864 flow [2022-01-19 00:33:26,193 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1954, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1864, PETRI_PLACES=347, PETRI_TRANSITIONS=246} [2022-01-19 00:33:26,193 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 190 predicate places. [2022-01-19 00:33:26,193 INFO L470 AbstractCegarLoop]: Abstraction has has 347 places, 246 transitions, 1864 flow [2022-01-19 00:33:26,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:26,194 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:26,194 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:26,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-19 00:33:26,194 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:26,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:26,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1192206660, now seen corresponding path program 34 times [2022-01-19 00:33:26,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:26,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94209533] [2022-01-19 00:33:26,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:26,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:26,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:26,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:26,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:26,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94209533] [2022-01-19 00:33:26,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94209533] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:26,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:26,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:26,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154020569] [2022-01-19 00:33:26,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:26,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:26,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:26,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:26,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:26,280 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:26,280 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 246 transitions, 1864 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:26,280 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:26,280 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:26,281 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:26,737 INFO L129 PetriNetUnfolder]: 275/1593 cut-off events. [2022-01-19 00:33:26,738 INFO L130 PetriNetUnfolder]: For 5781/5853 co-relation queries the response was YES. [2022-01-19 00:33:26,751 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5351 conditions, 1593 events. 275/1593 cut-off events. For 5781/5853 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 12368 event pairs, 220 based on Foata normal form. 1/1531 useless extension candidates. Maximal degree in co-relation 5240. Up to 712 conditions per place. [2022-01-19 00:33:26,754 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 67 selfloop transitions, 14 changer transitions 44/274 dead transitions. [2022-01-19 00:33:26,754 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 274 transitions, 2409 flow [2022-01-19 00:33:26,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 00:33:26,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 00:33:26,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2785 transitions. [2022-01-19 00:33:26,756 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7621784345922277 [2022-01-19 00:33:26,756 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2785 transitions. [2022-01-19 00:33:26,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2785 transitions. [2022-01-19 00:33:26,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:26,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2785 transitions. [2022-01-19 00:33:26,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.61904761904762) internal successors, (2785), 21 states have internal predecessors, (2785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:26,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:26,760 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:26,760 INFO L186 Difference]: Start difference. First operand has 347 places, 246 transitions, 1864 flow. Second operand 21 states and 2785 transitions. [2022-01-19 00:33:26,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 274 transitions, 2409 flow [2022-01-19 00:33:26,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 274 transitions, 2230 flow, removed 33 selfloop flow, removed 25 redundant places. [2022-01-19 00:33:26,788 INFO L242 Difference]: Finished difference. Result has 330 places, 229 transitions, 1499 flow [2022-01-19 00:33:26,788 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1724, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1499, PETRI_PLACES=330, PETRI_TRANSITIONS=229} [2022-01-19 00:33:26,788 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 173 predicate places. [2022-01-19 00:33:26,789 INFO L470 AbstractCegarLoop]: Abstraction has has 330 places, 229 transitions, 1499 flow [2022-01-19 00:33:26,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:26,789 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:26,789 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] [2022-01-19 00:33:26,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-19 00:33:26,789 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:26,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:26,789 INFO L85 PathProgramCache]: Analyzing trace with hash -261161542, now seen corresponding path program 35 times [2022-01-19 00:33:26,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:26,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683352043] [2022-01-19 00:33:26,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:26,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:26,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:26,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:26,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683352043] [2022-01-19 00:33:26,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683352043] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:26,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:26,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:26,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503278159] [2022-01-19 00:33:26,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:26,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:26,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:26,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:26,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:26,877 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:26,878 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 229 transitions, 1499 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:26,878 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:26,878 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:26,878 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:27,273 INFO L129 PetriNetUnfolder]: 263/1517 cut-off events. [2022-01-19 00:33:27,273 INFO L130 PetriNetUnfolder]: For 4839/4911 co-relation queries the response was YES. [2022-01-19 00:33:27,284 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4854 conditions, 1517 events. 263/1517 cut-off events. For 4839/4911 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 11531 event pairs, 218 based on Foata normal form. 1/1457 useless extension candidates. Maximal degree in co-relation 4754. Up to 690 conditions per place. [2022-01-19 00:33:27,286 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 51 selfloop transitions, 2 changer transitions 51/249 dead transitions. [2022-01-19 00:33:27,286 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 249 transitions, 1864 flow [2022-01-19 00:33:27,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 00:33:27,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 00:33:27,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2645 transitions. [2022-01-19 00:33:27,288 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7600574712643678 [2022-01-19 00:33:27,288 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2645 transitions. [2022-01-19 00:33:27,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2645 transitions. [2022-01-19 00:33:27,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:27,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2645 transitions. [2022-01-19 00:33:27,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.25) internal successors, (2645), 20 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:27,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:27,292 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:27,292 INFO L186 Difference]: Start difference. First operand has 330 places, 229 transitions, 1499 flow. Second operand 20 states and 2645 transitions. [2022-01-19 00:33:27,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 249 transitions, 1864 flow [2022-01-19 00:33:27,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 249 transitions, 1754 flow, removed 23 selfloop flow, removed 23 redundant places. [2022-01-19 00:33:27,314 INFO L242 Difference]: Finished difference. Result has 306 places, 198 transitions, 1011 flow [2022-01-19 00:33:27,314 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1409, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1011, PETRI_PLACES=306, PETRI_TRANSITIONS=198} [2022-01-19 00:33:27,318 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 149 predicate places. [2022-01-19 00:33:27,318 INFO L470 AbstractCegarLoop]: Abstraction has has 306 places, 198 transitions, 1011 flow [2022-01-19 00:33:27,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:27,318 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:27,318 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:27,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-19 00:33:27,318 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:27,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:27,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1087007612, now seen corresponding path program 1 times [2022-01-19 00:33:27,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:27,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622939686] [2022-01-19 00:33:27,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:27,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:27,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:27,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:27,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622939686] [2022-01-19 00:33:27,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622939686] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:27,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:27,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:27,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945011141] [2022-01-19 00:33:27,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:27,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:27,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:27,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:27,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:27,405 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:27,405 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 198 transitions, 1011 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:27,405 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:27,405 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:27,405 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:27,844 INFO L129 PetriNetUnfolder]: 327/1614 cut-off events. [2022-01-19 00:33:27,844 INFO L130 PetriNetUnfolder]: For 5252/5323 co-relation queries the response was YES. [2022-01-19 00:33:27,853 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5145 conditions, 1614 events. 327/1614 cut-off events. For 5252/5323 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11978 event pairs, 181 based on Foata normal form. 2/1544 useless extension candidates. Maximal degree in co-relation 5057. Up to 597 conditions per place. [2022-01-19 00:33:27,856 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 80 selfloop transitions, 14 changer transitions 32/272 dead transitions. [2022-01-19 00:33:27,856 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 272 transitions, 1942 flow [2022-01-19 00:33:27,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 00:33:27,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 00:33:27,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2926 transitions. [2022-01-19 00:33:27,857 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2022-01-19 00:33:27,857 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2926 transitions. [2022-01-19 00:33:27,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2926 transitions. [2022-01-19 00:33:27,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:27,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2926 transitions. [2022-01-19 00:33:27,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 133.0) internal successors, (2926), 22 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:27,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:27,862 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:27,862 INFO L186 Difference]: Start difference. First operand has 306 places, 198 transitions, 1011 flow. Second operand 22 states and 2926 transitions. [2022-01-19 00:33:27,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 272 transitions, 1942 flow [2022-01-19 00:33:27,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 272 transitions, 1870 flow, removed 24 selfloop flow, removed 27 redundant places. [2022-01-19 00:33:27,878 INFO L242 Difference]: Finished difference. Result has 278 places, 211 transitions, 1151 flow [2022-01-19 00:33:27,878 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=939, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1151, PETRI_PLACES=278, PETRI_TRANSITIONS=211} [2022-01-19 00:33:27,879 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 121 predicate places. [2022-01-19 00:33:27,879 INFO L470 AbstractCegarLoop]: Abstraction has has 278 places, 211 transitions, 1151 flow [2022-01-19 00:33:27,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:27,879 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:27,879 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] [2022-01-19 00:33:27,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-19 00:33:27,880 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:27,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:27,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1783627810, now seen corresponding path program 2 times [2022-01-19 00:33:27,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:27,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314950310] [2022-01-19 00:33:27,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:27,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:27,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:27,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:27,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314950310] [2022-01-19 00:33:27,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314950310] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:27,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:27,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:27,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862261067] [2022-01-19 00:33:27,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:27,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:27,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:27,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:27,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:27,958 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:27,958 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 211 transitions, 1151 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:27,958 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:27,958 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:27,958 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:28,382 INFO L129 PetriNetUnfolder]: 323/1608 cut-off events. [2022-01-19 00:33:28,382 INFO L130 PetriNetUnfolder]: For 11061/11126 co-relation queries the response was YES. [2022-01-19 00:33:28,391 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6298 conditions, 1608 events. 323/1608 cut-off events. For 11061/11126 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11935 event pairs, 170 based on Foata normal form. 2/1547 useless extension candidates. Maximal degree in co-relation 6215. Up to 542 conditions per place. [2022-01-19 00:33:28,394 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 122 selfloop transitions, 12 changer transitions 46/326 dead transitions. [2022-01-19 00:33:28,395 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 326 transitions, 2691 flow [2022-01-19 00:33:28,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-19 00:33:28,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-01-19 00:33:28,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 4111 transitions. [2022-01-19 00:33:28,397 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7621431219873934 [2022-01-19 00:33:28,397 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 4111 transitions. [2022-01-19 00:33:28,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 4111 transitions. [2022-01-19 00:33:28,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:28,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 4111 transitions. [2022-01-19 00:33:28,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 132.61290322580646) internal successors, (4111), 31 states have internal predecessors, (4111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:28,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:28,402 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 174.0) internal successors, (5568), 32 states have internal predecessors, (5568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:28,402 INFO L186 Difference]: Start difference. First operand has 278 places, 211 transitions, 1151 flow. Second operand 31 states and 4111 transitions. [2022-01-19 00:33:28,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 326 transitions, 2691 flow [2022-01-19 00:33:28,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 326 transitions, 2253 flow, removed 219 selfloop flow, removed 14 redundant places. [2022-01-19 00:33:28,425 INFO L242 Difference]: Finished difference. Result has 307 places, 214 transitions, 1196 flow [2022-01-19 00:33:28,426 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1196, PETRI_PLACES=307, PETRI_TRANSITIONS=214} [2022-01-19 00:33:28,426 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 150 predicate places. [2022-01-19 00:33:28,426 INFO L470 AbstractCegarLoop]: Abstraction has has 307 places, 214 transitions, 1196 flow [2022-01-19 00:33:28,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:28,426 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:28,426 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] [2022-01-19 00:33:28,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-19 00:33:28,427 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:28,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:28,427 INFO L85 PathProgramCache]: Analyzing trace with hash -758953314, now seen corresponding path program 3 times [2022-01-19 00:33:28,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:28,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643119417] [2022-01-19 00:33:28,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:28,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:28,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:28,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:28,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:28,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643119417] [2022-01-19 00:33:28,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643119417] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:28,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:28,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:28,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021746349] [2022-01-19 00:33:28,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:28,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:28,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:28,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:28,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:28,508 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:28,508 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 214 transitions, 1196 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:28,508 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:28,508 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:28,508 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:29,029 INFO L129 PetriNetUnfolder]: 332/1706 cut-off events. [2022-01-19 00:33:29,029 INFO L130 PetriNetUnfolder]: For 10637/10702 co-relation queries the response was YES. [2022-01-19 00:33:29,041 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6519 conditions, 1706 events. 332/1706 cut-off events. For 10637/10702 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13008 event pairs, 157 based on Foata normal form. 2/1654 useless extension candidates. Maximal degree in co-relation 6423. Up to 540 conditions per place. [2022-01-19 00:33:29,045 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 148 selfloop transitions, 10 changer transitions 46/350 dead transitions. [2022-01-19 00:33:29,045 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 350 transitions, 3074 flow [2022-01-19 00:33:29,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 00:33:29,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 00:33:29,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3982 transitions. [2022-01-19 00:33:29,047 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628352490421456 [2022-01-19 00:33:29,047 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3982 transitions. [2022-01-19 00:33:29,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3982 transitions. [2022-01-19 00:33:29,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:29,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3982 transitions. [2022-01-19 00:33:29,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 132.73333333333332) internal successors, (3982), 30 states have internal predecessors, (3982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:29,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:29,052 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 174.0) internal successors, (5394), 31 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:29,052 INFO L186 Difference]: Start difference. First operand has 307 places, 214 transitions, 1196 flow. Second operand 30 states and 3982 transitions. [2022-01-19 00:33:29,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 350 transitions, 3074 flow [2022-01-19 00:33:29,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 350 transitions, 2790 flow, removed 120 selfloop flow, removed 21 redundant places. [2022-01-19 00:33:29,081 INFO L242 Difference]: Finished difference. Result has 321 places, 218 transitions, 1296 flow [2022-01-19 00:33:29,081 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1132, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=1296, PETRI_PLACES=321, PETRI_TRANSITIONS=218} [2022-01-19 00:33:29,082 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 164 predicate places. [2022-01-19 00:33:29,082 INFO L470 AbstractCegarLoop]: Abstraction has has 321 places, 218 transitions, 1296 flow [2022-01-19 00:33:29,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:29,082 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:29,082 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] [2022-01-19 00:33:29,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-19 00:33:29,082 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:29,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:29,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1874127164, now seen corresponding path program 4 times [2022-01-19 00:33:29,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:29,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066496811] [2022-01-19 00:33:29,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:29,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:29,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:29,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:29,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:29,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066496811] [2022-01-19 00:33:29,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066496811] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:29,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:29,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:29,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388203246] [2022-01-19 00:33:29,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:29,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:29,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:29,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:29,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:29,194 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:29,194 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 218 transitions, 1296 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:29,194 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:29,194 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:29,195 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:29,626 INFO L129 PetriNetUnfolder]: 327/1663 cut-off events. [2022-01-19 00:33:29,626 INFO L130 PetriNetUnfolder]: For 14540/14611 co-relation queries the response was YES. [2022-01-19 00:33:29,641 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7012 conditions, 1663 events. 327/1663 cut-off events. For 14540/14611 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12528 event pairs, 194 based on Foata normal form. 2/1598 useless extension candidates. Maximal degree in co-relation 6907. Up to 655 conditions per place. [2022-01-19 00:33:29,646 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 96 selfloop transitions, 22 changer transitions 23/287 dead transitions. [2022-01-19 00:33:29,646 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 287 transitions, 2562 flow [2022-01-19 00:33:29,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-19 00:33:29,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-19 00:33:29,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2529 transitions. [2022-01-19 00:33:29,649 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.76497277676951 [2022-01-19 00:33:29,649 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2529 transitions. [2022-01-19 00:33:29,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2529 transitions. [2022-01-19 00:33:29,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:29,650 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2529 transitions. [2022-01-19 00:33:29,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.10526315789474) internal successors, (2529), 19 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:29,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:29,654 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:29,654 INFO L186 Difference]: Start difference. First operand has 321 places, 218 transitions, 1296 flow. Second operand 19 states and 2529 transitions. [2022-01-19 00:33:29,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 287 transitions, 2562 flow [2022-01-19 00:33:29,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 287 transitions, 2280 flow, removed 140 selfloop flow, removed 21 redundant places. [2022-01-19 00:33:29,693 INFO L242 Difference]: Finished difference. Result has 309 places, 232 transitions, 1515 flow [2022-01-19 00:33:29,693 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1222, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1515, PETRI_PLACES=309, PETRI_TRANSITIONS=232} [2022-01-19 00:33:29,693 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 152 predicate places. [2022-01-19 00:33:29,693 INFO L470 AbstractCegarLoop]: Abstraction has has 309 places, 232 transitions, 1515 flow [2022-01-19 00:33:29,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:29,694 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:29,694 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:29,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-19 00:33:29,694 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:29,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:29,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1567922580, now seen corresponding path program 5 times [2022-01-19 00:33:29,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:29,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386702432] [2022-01-19 00:33:29,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:29,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:29,787 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 00:33:29,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:29,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386702432] [2022-01-19 00:33:29,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386702432] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:29,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:29,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:29,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273815166] [2022-01-19 00:33:29,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:29,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:29,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:29,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:29,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:29,789 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:29,790 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 232 transitions, 1515 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:29,790 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:29,790 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:29,790 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:30,308 INFO L129 PetriNetUnfolder]: 363/1768 cut-off events. [2022-01-19 00:33:30,308 INFO L130 PetriNetUnfolder]: For 12156/12224 co-relation queries the response was YES. [2022-01-19 00:33:30,320 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7455 conditions, 1768 events. 363/1768 cut-off events. For 12156/12224 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13498 event pairs, 212 based on Foata normal form. 3/1705 useless extension candidates. Maximal degree in co-relation 7356. Up to 661 conditions per place. [2022-01-19 00:33:30,323 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 118 selfloop transitions, 17 changer transitions 40/321 dead transitions. [2022-01-19 00:33:30,323 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 321 transitions, 3124 flow [2022-01-19 00:33:30,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 00:33:30,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 00:33:30,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3580 transitions. [2022-01-19 00:33:30,325 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7620263942103023 [2022-01-19 00:33:30,325 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3580 transitions. [2022-01-19 00:33:30,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3580 transitions. [2022-01-19 00:33:30,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:30,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3580 transitions. [2022-01-19 00:33:30,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.59259259259258) internal successors, (3580), 27 states have internal predecessors, (3580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:30,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:30,330 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:30,330 INFO L186 Difference]: Start difference. First operand has 309 places, 232 transitions, 1515 flow. Second operand 27 states and 3580 transitions. [2022-01-19 00:33:30,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 321 transitions, 3124 flow [2022-01-19 00:33:30,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 321 transitions, 2915 flow, removed 83 selfloop flow, removed 8 redundant places. [2022-01-19 00:33:30,364 INFO L242 Difference]: Finished difference. Result has 341 places, 244 transitions, 1677 flow [2022-01-19 00:33:30,364 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1388, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1677, PETRI_PLACES=341, PETRI_TRANSITIONS=244} [2022-01-19 00:33:30,364 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 184 predicate places. [2022-01-19 00:33:30,364 INFO L470 AbstractCegarLoop]: Abstraction has has 341 places, 244 transitions, 1677 flow [2022-01-19 00:33:30,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:30,365 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:30,365 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] [2022-01-19 00:33:30,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-19 00:33:30,365 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:30,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:30,365 INFO L85 PathProgramCache]: Analyzing trace with hash -22442538, now seen corresponding path program 6 times [2022-01-19 00:33:30,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:30,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504857408] [2022-01-19 00:33:30,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:30,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:30,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:30,435 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 00:33:30,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:30,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504857408] [2022-01-19 00:33:30,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504857408] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:30,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:30,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:30,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342614674] [2022-01-19 00:33:30,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:30,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:30,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:30,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:30,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:30,436 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:30,437 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 244 transitions, 1677 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:30,437 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:30,437 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:30,437 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:30,964 INFO L129 PetriNetUnfolder]: 370/1826 cut-off events. [2022-01-19 00:33:30,964 INFO L130 PetriNetUnfolder]: For 17586/17660 co-relation queries the response was YES. [2022-01-19 00:33:30,983 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8270 conditions, 1826 events. 370/1826 cut-off events. For 17586/17660 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 14141 event pairs, 210 based on Foata normal form. 2/1763 useless extension candidates. Maximal degree in co-relation 8155. Up to 607 conditions per place. [2022-01-19 00:33:30,987 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 112 selfloop transitions, 25 changer transitions 40/323 dead transitions. [2022-01-19 00:33:30,987 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 323 transitions, 3430 flow [2022-01-19 00:33:30,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-19 00:33:30,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-01-19 00:33:30,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3449 transitions. [2022-01-19 00:33:30,989 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7623784261715296 [2022-01-19 00:33:30,989 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3449 transitions. [2022-01-19 00:33:30,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3449 transitions. [2022-01-19 00:33:30,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:30,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3449 transitions. [2022-01-19 00:33:30,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.65384615384616) internal successors, (3449), 26 states have internal predecessors, (3449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:30,993 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:30,994 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:30,994 INFO L186 Difference]: Start difference. First operand has 341 places, 244 transitions, 1677 flow. Second operand 26 states and 3449 transitions. [2022-01-19 00:33:30,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 323 transitions, 3430 flow [2022-01-19 00:33:31,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 323 transitions, 3056 flow, removed 187 selfloop flow, removed 16 redundant places. [2022-01-19 00:33:31,041 INFO L242 Difference]: Finished difference. Result has 354 places, 253 transitions, 1874 flow [2022-01-19 00:33:31,041 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1593, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1874, PETRI_PLACES=354, PETRI_TRANSITIONS=253} [2022-01-19 00:33:31,041 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 197 predicate places. [2022-01-19 00:33:31,041 INFO L470 AbstractCegarLoop]: Abstraction has has 354 places, 253 transitions, 1874 flow [2022-01-19 00:33:31,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:31,042 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:31,042 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] [2022-01-19 00:33:31,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-19 00:33:31,042 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:31,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:31,042 INFO L85 PathProgramCache]: Analyzing trace with hash 320292718, now seen corresponding path program 7 times [2022-01-19 00:33:31,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:31,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619258496] [2022-01-19 00:33:31,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:31,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:31,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:31,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:31,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619258496] [2022-01-19 00:33:31,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619258496] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:31,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:31,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:31,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492643502] [2022-01-19 00:33:31,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:31,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:31,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:31,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:31,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:31,132 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:31,133 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 253 transitions, 1874 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:31,133 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:31,133 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:31,133 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:31,660 INFO L129 PetriNetUnfolder]: 370/1821 cut-off events. [2022-01-19 00:33:31,660 INFO L130 PetriNetUnfolder]: For 18832/18930 co-relation queries the response was YES. [2022-01-19 00:33:31,678 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8434 conditions, 1821 events. 370/1821 cut-off events. For 18832/18930 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 14019 event pairs, 234 based on Foata normal form. 5/1751 useless extension candidates. Maximal degree in co-relation 8311. Up to 710 conditions per place. [2022-01-19 00:33:31,682 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 115 selfloop transitions, 35 changer transitions 36/332 dead transitions. [2022-01-19 00:33:31,682 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 332 transitions, 3619 flow [2022-01-19 00:33:31,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-19 00:33:31,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-01-19 00:33:31,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3312 transitions. [2022-01-19 00:33:31,685 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7613793103448275 [2022-01-19 00:33:31,685 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3312 transitions. [2022-01-19 00:33:31,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3312 transitions. [2022-01-19 00:33:31,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:31,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3312 transitions. [2022-01-19 00:33:31,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 132.48) internal successors, (3312), 25 states have internal predecessors, (3312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:31,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:31,690 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 174.0) internal successors, (4524), 26 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:31,690 INFO L186 Difference]: Start difference. First operand has 354 places, 253 transitions, 1874 flow. Second operand 25 states and 3312 transitions. [2022-01-19 00:33:31,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 332 transitions, 3619 flow [2022-01-19 00:33:31,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 332 transitions, 3360 flow, removed 120 selfloop flow, removed 18 redundant places. [2022-01-19 00:33:31,746 INFO L242 Difference]: Finished difference. Result has 362 places, 268 transitions, 2204 flow [2022-01-19 00:33:31,746 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1771, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2204, PETRI_PLACES=362, PETRI_TRANSITIONS=268} [2022-01-19 00:33:31,746 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 205 predicate places. [2022-01-19 00:33:31,746 INFO L470 AbstractCegarLoop]: Abstraction has has 362 places, 268 transitions, 2204 flow [2022-01-19 00:33:31,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:31,747 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:31,747 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] [2022-01-19 00:33:31,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-19 00:33:31,747 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:31,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:31,747 INFO L85 PathProgramCache]: Analyzing trace with hash -451418944, now seen corresponding path program 8 times [2022-01-19 00:33:31,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:31,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005952763] [2022-01-19 00:33:31,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:31,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:31,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:31,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:31,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:31,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005952763] [2022-01-19 00:33:31,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005952763] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:31,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:31,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:31,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796753860] [2022-01-19 00:33:31,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:31,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:31,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:31,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:31,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:31,838 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:31,838 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 268 transitions, 2204 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:31,838 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:31,838 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:31,839 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:32,438 INFO L129 PetriNetUnfolder]: 363/1773 cut-off events. [2022-01-19 00:33:32,439 INFO L130 PetriNetUnfolder]: For 16945/17023 co-relation queries the response was YES. [2022-01-19 00:33:32,454 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8269 conditions, 1773 events. 363/1773 cut-off events. For 16945/17023 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 13673 event pairs, 209 based on Foata normal form. 8/1715 useless extension candidates. Maximal degree in co-relation 8143. Up to 680 conditions per place. [2022-01-19 00:33:32,458 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 127 selfloop transitions, 36 changer transitions 47/356 dead transitions. [2022-01-19 00:33:32,459 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 356 transitions, 3969 flow [2022-01-19 00:33:32,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 00:33:32,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 00:33:32,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3707 transitions. [2022-01-19 00:33:32,461 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7608784893267652 [2022-01-19 00:33:32,461 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3707 transitions. [2022-01-19 00:33:32,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3707 transitions. [2022-01-19 00:33:32,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:32,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3707 transitions. [2022-01-19 00:33:32,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.39285714285714) internal successors, (3707), 28 states have internal predecessors, (3707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:32,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:32,466 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:32,466 INFO L186 Difference]: Start difference. First operand has 362 places, 268 transitions, 2204 flow. Second operand 28 states and 3707 transitions. [2022-01-19 00:33:32,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 356 transitions, 3969 flow [2022-01-19 00:33:32,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 356 transitions, 3540 flow, removed 190 selfloop flow, removed 16 redundant places. [2022-01-19 00:33:32,532 INFO L242 Difference]: Finished difference. Result has 378 places, 268 transitions, 2153 flow [2022-01-19 00:33:32,532 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1996, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2153, PETRI_PLACES=378, PETRI_TRANSITIONS=268} [2022-01-19 00:33:32,532 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 221 predicate places. [2022-01-19 00:33:32,532 INFO L470 AbstractCegarLoop]: Abstraction has has 378 places, 268 transitions, 2153 flow [2022-01-19 00:33:32,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:32,532 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:32,533 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] [2022-01-19 00:33:32,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-19 00:33:32,533 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:32,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:32,533 INFO L85 PathProgramCache]: Analyzing trace with hash 255408086, now seen corresponding path program 9 times [2022-01-19 00:33:32,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:32,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289422875] [2022-01-19 00:33:32,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:32,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:32,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:32,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:32,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289422875] [2022-01-19 00:33:32,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289422875] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:32,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:32,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:32,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287357766] [2022-01-19 00:33:32,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:32,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:32,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:32,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:32,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:32,617 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:32,617 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 268 transitions, 2153 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:32,618 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:32,618 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:32,618 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:33,059 INFO L129 PetriNetUnfolder]: 363/1782 cut-off events. [2022-01-19 00:33:33,059 INFO L130 PetriNetUnfolder]: For 15233/15335 co-relation queries the response was YES. [2022-01-19 00:33:33,074 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7997 conditions, 1782 events. 363/1782 cut-off events. For 15233/15335 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 13708 event pairs, 214 based on Foata normal form. 10/1721 useless extension candidates. Maximal degree in co-relation 7865. Up to 704 conditions per place. [2022-01-19 00:33:33,078 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 116 selfloop transitions, 37 changer transitions 31/330 dead transitions. [2022-01-19 00:33:33,078 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 330 transitions, 3388 flow [2022-01-19 00:33:33,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 00:33:33,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 00:33:33,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2657 transitions. [2022-01-19 00:33:33,079 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635057471264368 [2022-01-19 00:33:33,079 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2657 transitions. [2022-01-19 00:33:33,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2657 transitions. [2022-01-19 00:33:33,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:33,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2657 transitions. [2022-01-19 00:33:33,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.85) internal successors, (2657), 20 states have internal predecessors, (2657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:33,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:33,083 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:33,083 INFO L186 Difference]: Start difference. First operand has 378 places, 268 transitions, 2153 flow. Second operand 20 states and 2657 transitions. [2022-01-19 00:33:33,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 330 transitions, 3388 flow [2022-01-19 00:33:33,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 330 transitions, 3195 flow, removed 66 selfloop flow, removed 21 redundant places. [2022-01-19 00:33:33,140 INFO L242 Difference]: Finished difference. Result has 365 places, 268 transitions, 2150 flow [2022-01-19 00:33:33,140 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2054, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2150, PETRI_PLACES=365, PETRI_TRANSITIONS=268} [2022-01-19 00:33:33,140 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 208 predicate places. [2022-01-19 00:33:33,140 INFO L470 AbstractCegarLoop]: Abstraction has has 365 places, 268 transitions, 2150 flow [2022-01-19 00:33:33,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:33,141 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:33,141 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:33,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-19 00:33:33,141 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:33,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:33,141 INFO L85 PathProgramCache]: Analyzing trace with hash -340988818, now seen corresponding path program 10 times [2022-01-19 00:33:33,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:33,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396329741] [2022-01-19 00:33:33,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:33,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:33,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:33,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:33,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396329741] [2022-01-19 00:33:33,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396329741] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:33,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:33,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:33,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258023028] [2022-01-19 00:33:33,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:33,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:33,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:33,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:33,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:33,227 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:33,227 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 268 transitions, 2150 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:33,228 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:33,228 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:33,228 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:33,700 INFO L129 PetriNetUnfolder]: 339/1696 cut-off events. [2022-01-19 00:33:33,700 INFO L130 PetriNetUnfolder]: For 13443/13523 co-relation queries the response was YES. [2022-01-19 00:33:33,714 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7507 conditions, 1696 events. 339/1696 cut-off events. For 13443/13523 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12870 event pairs, 201 based on Foata normal form. 8/1640 useless extension candidates. Maximal degree in co-relation 7385. Up to 677 conditions per place. [2022-01-19 00:33:33,718 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 112 selfloop transitions, 20 changer transitions 44/322 dead transitions. [2022-01-19 00:33:33,718 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 322 transitions, 3188 flow [2022-01-19 00:33:33,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 00:33:33,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 00:33:33,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3172 transitions. [2022-01-19 00:33:33,720 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7595785440613027 [2022-01-19 00:33:33,720 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3172 transitions. [2022-01-19 00:33:33,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3172 transitions. [2022-01-19 00:33:33,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:33,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3172 transitions. [2022-01-19 00:33:33,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.16666666666666) internal successors, (3172), 24 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:33,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 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 00:33:33,724 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 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 00:33:33,724 INFO L186 Difference]: Start difference. First operand has 365 places, 268 transitions, 2150 flow. Second operand 24 states and 3172 transitions. [2022-01-19 00:33:33,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 322 transitions, 3188 flow [2022-01-19 00:33:33,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 322 transitions, 3064 flow, removed 21 selfloop flow, removed 14 redundant places. [2022-01-19 00:33:33,774 INFO L242 Difference]: Finished difference. Result has 372 places, 247 transitions, 1816 flow [2022-01-19 00:33:33,775 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2060, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1816, PETRI_PLACES=372, PETRI_TRANSITIONS=247} [2022-01-19 00:33:33,775 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 215 predicate places. [2022-01-19 00:33:33,775 INFO L470 AbstractCegarLoop]: Abstraction has has 372 places, 247 transitions, 1816 flow [2022-01-19 00:33:33,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:33,775 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:33,775 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:33,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-19 00:33:33,775 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:33,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:33,776 INFO L85 PathProgramCache]: Analyzing trace with hash 1804455082, now seen corresponding path program 11 times [2022-01-19 00:33:33,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:33,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200613861] [2022-01-19 00:33:33,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:33,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:33,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:33,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:33,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200613861] [2022-01-19 00:33:33,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200613861] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:33,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:33,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:33,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804317445] [2022-01-19 00:33:33,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:33,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:33,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:33,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:33,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:33,866 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:33,866 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 247 transitions, 1816 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:33,866 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:33,866 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:33,866 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:34,310 INFO L129 PetriNetUnfolder]: 338/1684 cut-off events. [2022-01-19 00:33:34,310 INFO L130 PetriNetUnfolder]: For 13925/14001 co-relation queries the response was YES. [2022-01-19 00:33:34,326 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7538 conditions, 1684 events. 338/1684 cut-off events. For 13925/14001 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12728 event pairs, 210 based on Foata normal form. 4/1622 useless extension candidates. Maximal degree in co-relation 7413. Up to 677 conditions per place. [2022-01-19 00:33:34,329 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 100 selfloop transitions, 30 changer transitions 27/303 dead transitions. [2022-01-19 00:33:34,329 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 303 transitions, 3027 flow [2022-01-19 00:33:34,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 00:33:34,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 00:33:34,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2919 transitions. [2022-01-19 00:33:34,331 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.762539184952978 [2022-01-19 00:33:34,331 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2919 transitions. [2022-01-19 00:33:34,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2919 transitions. [2022-01-19 00:33:34,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:34,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2919 transitions. [2022-01-19 00:33:34,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.6818181818182) internal successors, (2919), 22 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 00:33:34,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:34,335 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:34,335 INFO L186 Difference]: Start difference. First operand has 372 places, 247 transitions, 1816 flow. Second operand 22 states and 2919 transitions. [2022-01-19 00:33:34,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 303 transitions, 3027 flow [2022-01-19 00:33:34,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 303 transitions, 2791 flow, removed 52 selfloop flow, removed 23 redundant places. [2022-01-19 00:33:34,378 INFO L242 Difference]: Finished difference. Result has 349 places, 259 transitions, 2024 flow [2022-01-19 00:33:34,378 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1704, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2024, PETRI_PLACES=349, PETRI_TRANSITIONS=259} [2022-01-19 00:33:34,379 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 192 predicate places. [2022-01-19 00:33:34,379 INFO L470 AbstractCegarLoop]: Abstraction has has 349 places, 259 transitions, 2024 flow [2022-01-19 00:33:34,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:34,379 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:34,379 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] [2022-01-19 00:33:34,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-19 00:33:34,379 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:34,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:34,379 INFO L85 PathProgramCache]: Analyzing trace with hash 1740779910, now seen corresponding path program 12 times [2022-01-19 00:33:34,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:34,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977877263] [2022-01-19 00:33:34,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:34,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:34,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:34,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:34,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977877263] [2022-01-19 00:33:34,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977877263] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:34,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:34,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:34,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438776884] [2022-01-19 00:33:34,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:34,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:34,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:34,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:34,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:34,489 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:34,489 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 259 transitions, 2024 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:34,489 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:34,489 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:34,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:34,943 INFO L129 PetriNetUnfolder]: 351/1751 cut-off events. [2022-01-19 00:33:34,943 INFO L130 PetriNetUnfolder]: For 13028/13117 co-relation queries the response was YES. [2022-01-19 00:33:34,958 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7549 conditions, 1751 events. 351/1751 cut-off events. For 13028/13117 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13319 event pairs, 231 based on Foata normal form. 4/1682 useless extension candidates. Maximal degree in co-relation 7432. Up to 679 conditions per place. [2022-01-19 00:33:34,961 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 106 selfloop transitions, 38 changer transitions 27/317 dead transitions. [2022-01-19 00:33:34,961 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 317 transitions, 3266 flow [2022-01-19 00:33:34,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 00:33:34,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 00:33:34,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2662 transitions. [2022-01-19 00:33:34,963 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7649425287356322 [2022-01-19 00:33:34,963 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2662 transitions. [2022-01-19 00:33:34,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2662 transitions. [2022-01-19 00:33:34,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:34,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2662 transitions. [2022-01-19 00:33:34,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.1) internal successors, (2662), 20 states have internal predecessors, (2662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:34,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:34,967 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:34,967 INFO L186 Difference]: Start difference. First operand has 349 places, 259 transitions, 2024 flow. Second operand 20 states and 2662 transitions. [2022-01-19 00:33:34,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 317 transitions, 3266 flow [2022-01-19 00:33:35,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 317 transitions, 3066 flow, removed 92 selfloop flow, removed 5 redundant places. [2022-01-19 00:33:35,009 INFO L242 Difference]: Finished difference. Result has 365 places, 271 transitions, 2241 flow [2022-01-19 00:33:35,010 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1916, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2241, PETRI_PLACES=365, PETRI_TRANSITIONS=271} [2022-01-19 00:33:35,010 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 208 predicate places. [2022-01-19 00:33:35,010 INFO L470 AbstractCegarLoop]: Abstraction has has 365 places, 271 transitions, 2241 flow [2022-01-19 00:33:35,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:35,010 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:35,010 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:35,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-19 00:33:35,011 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:35,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:35,011 INFO L85 PathProgramCache]: Analyzing trace with hash -687421056, now seen corresponding path program 13 times [2022-01-19 00:33:35,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:35,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735003473] [2022-01-19 00:33:35,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:35,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:35,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:35,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:35,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735003473] [2022-01-19 00:33:35,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [735003473] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:35,095 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:35,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:35,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139916268] [2022-01-19 00:33:35,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:35,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:35,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:35,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:35,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:35,097 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:35,097 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 271 transitions, 2241 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:35,097 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:35,097 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:35,097 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:35,537 INFO L129 PetriNetUnfolder]: 346/1747 cut-off events. [2022-01-19 00:33:35,538 INFO L130 PetriNetUnfolder]: For 13255/13344 co-relation queries the response was YES. [2022-01-19 00:33:35,552 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7552 conditions, 1747 events. 346/1747 cut-off events. For 13255/13344 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13300 event pairs, 231 based on Foata normal form. 4/1678 useless extension candidates. Maximal degree in co-relation 7426. Up to 679 conditions per place. [2022-01-19 00:33:35,556 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 110 selfloop transitions, 37 changer transitions 29/322 dead transitions. [2022-01-19 00:33:35,556 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 322 transitions, 3409 flow [2022-01-19 00:33:35,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 00:33:35,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 00:33:35,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2792 transitions. [2022-01-19 00:33:35,558 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7640941434044882 [2022-01-19 00:33:35,558 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2792 transitions. [2022-01-19 00:33:35,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2792 transitions. [2022-01-19 00:33:35,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:35,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2792 transitions. [2022-01-19 00:33:35,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.95238095238096) internal successors, (2792), 21 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:35,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:35,562 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:35,562 INFO L186 Difference]: Start difference. First operand has 365 places, 271 transitions, 2241 flow. Second operand 21 states and 2792 transitions. [2022-01-19 00:33:35,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 322 transitions, 3409 flow [2022-01-19 00:33:35,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 322 transitions, 3287 flow, removed 37 selfloop flow, removed 8 redundant places. [2022-01-19 00:33:35,620 INFO L242 Difference]: Finished difference. Result has 380 places, 278 transitions, 2421 flow [2022-01-19 00:33:35,621 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2156, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2421, PETRI_PLACES=380, PETRI_TRANSITIONS=278} [2022-01-19 00:33:35,621 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 223 predicate places. [2022-01-19 00:33:35,621 INFO L470 AbstractCegarLoop]: Abstraction has has 380 places, 278 transitions, 2421 flow [2022-01-19 00:33:35,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:35,621 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:35,621 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] [2022-01-19 00:33:35,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-19 00:33:35,621 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:35,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:35,622 INFO L85 PathProgramCache]: Analyzing trace with hash -926526690, now seen corresponding path program 14 times [2022-01-19 00:33:35,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:35,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010186830] [2022-01-19 00:33:35,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:35,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:35,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:35,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:35,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:35,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010186830] [2022-01-19 00:33:35,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010186830] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:35,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:35,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:35,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512754271] [2022-01-19 00:33:35,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:35,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:35,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:35,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:35,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:35,732 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:35,733 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 278 transitions, 2421 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:35,733 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:35,733 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:35,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:36,257 INFO L129 PetriNetUnfolder]: 351/1758 cut-off events. [2022-01-19 00:33:36,257 INFO L130 PetriNetUnfolder]: For 13963/14035 co-relation queries the response was YES. [2022-01-19 00:33:36,274 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7820 conditions, 1758 events. 351/1758 cut-off events. For 13963/14035 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 13462 event pairs, 211 based on Foata normal form. 4/1695 useless extension candidates. Maximal degree in co-relation 7688. Up to 680 conditions per place. [2022-01-19 00:33:36,278 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 118 selfloop transitions, 37 changer transitions 42/343 dead transitions. [2022-01-19 00:33:36,278 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 392 places, 343 transitions, 3828 flow [2022-01-19 00:33:36,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-19 00:33:36,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-01-19 00:33:36,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3056 transitions. [2022-01-19 00:33:36,280 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7636181909045477 [2022-01-19 00:33:36,280 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3056 transitions. [2022-01-19 00:33:36,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3056 transitions. [2022-01-19 00:33:36,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:36,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3056 transitions. [2022-01-19 00:33:36,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.8695652173913) internal successors, (3056), 23 states have internal predecessors, (3056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:36,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:36,284 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:36,284 INFO L186 Difference]: Start difference. First operand has 380 places, 278 transitions, 2421 flow. Second operand 23 states and 3056 transitions. [2022-01-19 00:33:36,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 392 places, 343 transitions, 3828 flow [2022-01-19 00:33:36,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 343 transitions, 3632 flow, removed 71 selfloop flow, removed 7 redundant places. [2022-01-19 00:33:36,339 INFO L242 Difference]: Finished difference. Result has 399 places, 283 transitions, 2547 flow [2022-01-19 00:33:36,339 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2323, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2547, PETRI_PLACES=399, PETRI_TRANSITIONS=283} [2022-01-19 00:33:36,340 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 242 predicate places. [2022-01-19 00:33:36,340 INFO L470 AbstractCegarLoop]: Abstraction has has 399 places, 283 transitions, 2547 flow [2022-01-19 00:33:36,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:36,340 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:36,340 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:36,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-19 00:33:36,340 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:36,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:36,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1230332018, now seen corresponding path program 15 times [2022-01-19 00:33:36,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:36,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579569094] [2022-01-19 00:33:36,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:36,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:36,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:36,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:36,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579569094] [2022-01-19 00:33:36,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579569094] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:36,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:36,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:36,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799834139] [2022-01-19 00:33:36,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:36,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:36,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:36,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:36,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:36,423 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:36,423 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 283 transitions, 2547 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:36,423 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:36,423 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:36,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:36,956 INFO L129 PetriNetUnfolder]: 346/1738 cut-off events. [2022-01-19 00:33:36,956 INFO L130 PetriNetUnfolder]: For 14838/14910 co-relation queries the response was YES. [2022-01-19 00:33:36,968 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7828 conditions, 1738 events. 346/1738 cut-off events. For 14838/14910 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 13293 event pairs, 211 based on Foata normal form. 4/1675 useless extension candidates. Maximal degree in co-relation 7688. Up to 675 conditions per place. [2022-01-19 00:33:36,972 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 115 selfloop transitions, 39 changer transitions 40/340 dead transitions. [2022-01-19 00:33:36,972 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 340 transitions, 3770 flow [2022-01-19 00:33:36,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 00:33:36,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 00:33:36,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3187 transitions. [2022-01-19 00:33:36,973 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631704980842912 [2022-01-19 00:33:36,973 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3187 transitions. [2022-01-19 00:33:36,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3187 transitions. [2022-01-19 00:33:36,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:36,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3187 transitions. [2022-01-19 00:33:36,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.79166666666666) internal successors, (3187), 24 states have internal predecessors, (3187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:36,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 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 00:33:36,977 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 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 00:33:36,978 INFO L186 Difference]: Start difference. First operand has 399 places, 283 transitions, 2547 flow. Second operand 24 states and 3187 transitions. [2022-01-19 00:33:36,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 340 transitions, 3770 flow [2022-01-19 00:33:37,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 340 transitions, 3568 flow, removed 53 selfloop flow, removed 17 redundant places. [2022-01-19 00:33:37,034 INFO L242 Difference]: Finished difference. Result has 404 places, 282 transitions, 2533 flow [2022-01-19 00:33:37,034 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2415, PETRI_DIFFERENCE_MINUEND_PLACES=368, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2533, PETRI_PLACES=404, PETRI_TRANSITIONS=282} [2022-01-19 00:33:37,034 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 247 predicate places. [2022-01-19 00:33:37,035 INFO L470 AbstractCegarLoop]: Abstraction has has 404 places, 282 transitions, 2533 flow [2022-01-19 00:33:37,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:37,035 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:37,035 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:37,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-19 00:33:37,035 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:37,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:37,035 INFO L85 PathProgramCache]: Analyzing trace with hash -256361978, now seen corresponding path program 16 times [2022-01-19 00:33:37,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:37,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564146026] [2022-01-19 00:33:37,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:37,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:37,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:37,126 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 00:33:37,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:37,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564146026] [2022-01-19 00:33:37,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564146026] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:37,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:37,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:37,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822561669] [2022-01-19 00:33:37,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:37,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:37,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:37,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:37,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:37,127 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:37,128 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 282 transitions, 2533 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:37,128 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:37,128 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:37,128 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:37,608 INFO L129 PetriNetUnfolder]: 337/1697 cut-off events. [2022-01-19 00:33:37,609 INFO L130 PetriNetUnfolder]: For 14048/14120 co-relation queries the response was YES. [2022-01-19 00:33:37,625 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7574 conditions, 1697 events. 337/1697 cut-off events. For 14048/14120 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12902 event pairs, 214 based on Foata normal form. 4/1633 useless extension candidates. Maximal degree in co-relation 7434. Up to 687 conditions per place. [2022-01-19 00:33:37,629 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 110 selfloop transitions, 28 changer transitions 34/318 dead transitions. [2022-01-19 00:33:37,629 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 318 transitions, 3345 flow [2022-01-19 00:33:37,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 00:33:37,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 00:33:37,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2659 transitions. [2022-01-19 00:33:37,631 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764080459770115 [2022-01-19 00:33:37,631 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2659 transitions. [2022-01-19 00:33:37,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2659 transitions. [2022-01-19 00:33:37,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:37,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2659 transitions. [2022-01-19 00:33:37,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.95) internal successors, (2659), 20 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:37,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:37,634 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:37,634 INFO L186 Difference]: Start difference. First operand has 404 places, 282 transitions, 2533 flow. Second operand 20 states and 2659 transitions. [2022-01-19 00:33:37,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 318 transitions, 3345 flow [2022-01-19 00:33:37,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 318 transitions, 3168 flow, removed 39 selfloop flow, removed 19 redundant places. [2022-01-19 00:33:37,696 INFO L242 Difference]: Finished difference. Result has 397 places, 271 transitions, 2268 flow [2022-01-19 00:33:37,697 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2391, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2268, PETRI_PLACES=397, PETRI_TRANSITIONS=271} [2022-01-19 00:33:37,697 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 240 predicate places. [2022-01-19 00:33:37,697 INFO L470 AbstractCegarLoop]: Abstraction has has 397 places, 271 transitions, 2268 flow [2022-01-19 00:33:37,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:37,697 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:37,697 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:37,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-19 00:33:37,698 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:37,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:37,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1480476274, now seen corresponding path program 17 times [2022-01-19 00:33:37,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:37,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251814414] [2022-01-19 00:33:37,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:37,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:37,786 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 00:33:37,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:37,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251814414] [2022-01-19 00:33:37,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251814414] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:37,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:37,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:37,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493467050] [2022-01-19 00:33:37,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:37,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:37,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:37,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:37,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:37,788 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:37,789 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 271 transitions, 2268 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:37,789 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:37,789 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:37,789 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:38,274 INFO L129 PetriNetUnfolder]: 330/1701 cut-off events. [2022-01-19 00:33:38,274 INFO L130 PetriNetUnfolder]: For 13073/13156 co-relation queries the response was YES. [2022-01-19 00:33:38,290 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7208 conditions, 1701 events. 330/1701 cut-off events. For 13073/13156 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 12938 event pairs, 226 based on Foata normal form. 4/1634 useless extension candidates. Maximal degree in co-relation 7074. Up to 674 conditions per place. [2022-01-19 00:33:38,294 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 100 selfloop transitions, 20 changer transitions 36/302 dead transitions. [2022-01-19 00:33:38,295 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 302 transitions, 2948 flow [2022-01-19 00:33:38,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-19 00:33:38,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-19 00:33:38,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2527 transitions. [2022-01-19 00:33:38,296 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2022-01-19 00:33:38,296 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2527 transitions. [2022-01-19 00:33:38,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2527 transitions. [2022-01-19 00:33:38,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:38,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2527 transitions. [2022-01-19 00:33:38,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.0) internal successors, (2527), 19 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:38,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:38,300 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:38,300 INFO L186 Difference]: Start difference. First operand has 397 places, 271 transitions, 2268 flow. Second operand 19 states and 2527 transitions. [2022-01-19 00:33:38,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 302 transitions, 2948 flow [2022-01-19 00:33:38,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 302 transitions, 2783 flow, removed 25 selfloop flow, removed 23 redundant places. [2022-01-19 00:33:38,353 INFO L242 Difference]: Finished difference. Result has 379 places, 253 transitions, 1898 flow [2022-01-19 00:33:38,354 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2134, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1898, PETRI_PLACES=379, PETRI_TRANSITIONS=253} [2022-01-19 00:33:38,354 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 222 predicate places. [2022-01-19 00:33:38,354 INFO L470 AbstractCegarLoop]: Abstraction has has 379 places, 253 transitions, 1898 flow [2022-01-19 00:33:38,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:38,354 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:38,354 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:38,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-19 00:33:38,354 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:38,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:38,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1311043862, now seen corresponding path program 18 times [2022-01-19 00:33:38,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:38,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725321139] [2022-01-19 00:33:38,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:38,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:38,464 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 00:33:38,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:38,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725321139] [2022-01-19 00:33:38,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725321139] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:38,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:38,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:38,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321278940] [2022-01-19 00:33:38,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:38,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:38,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:38,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:38,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:38,466 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:38,467 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 253 transitions, 1898 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:38,467 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:38,467 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:38,467 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:39,018 INFO L129 PetriNetUnfolder]: 307/1600 cut-off events. [2022-01-19 00:33:39,018 INFO L130 PetriNetUnfolder]: For 11653/11725 co-relation queries the response was YES. [2022-01-19 00:33:39,030 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6679 conditions, 1600 events. 307/1600 cut-off events. For 11653/11725 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11990 event pairs, 204 based on Foata normal form. 4/1539 useless extension candidates. Maximal degree in co-relation 6554. Up to 651 conditions per place. [2022-01-19 00:33:39,033 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 89 selfloop transitions, 6 changer transitions 37/278 dead transitions. [2022-01-19 00:33:39,033 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 278 transitions, 2433 flow [2022-01-19 00:33:39,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 00:33:39,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 00:33:39,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2644 transitions. [2022-01-19 00:33:39,035 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7597701149425288 [2022-01-19 00:33:39,035 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2644 transitions. [2022-01-19 00:33:39,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2644 transitions. [2022-01-19 00:33:39,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:39,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2644 transitions. [2022-01-19 00:33:39,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.2) internal successors, (2644), 20 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:39,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:39,040 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:39,040 INFO L186 Difference]: Start difference. First operand has 379 places, 253 transitions, 1898 flow. Second operand 20 states and 2644 transitions. [2022-01-19 00:33:39,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 278 transitions, 2433 flow [2022-01-19 00:33:39,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 278 transitions, 2302 flow, removed 19 selfloop flow, removed 24 redundant places. [2022-01-19 00:33:39,099 INFO L242 Difference]: Finished difference. Result has 357 places, 228 transitions, 1466 flow [2022-01-19 00:33:39,106 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1785, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1466, PETRI_PLACES=357, PETRI_TRANSITIONS=228} [2022-01-19 00:33:39,106 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 200 predicate places. [2022-01-19 00:33:39,107 INFO L470 AbstractCegarLoop]: Abstraction has has 357 places, 228 transitions, 1466 flow [2022-01-19 00:33:39,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:39,107 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:39,107 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:39,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-19 00:33:39,107 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:39,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:39,108 INFO L85 PathProgramCache]: Analyzing trace with hash 692010612, now seen corresponding path program 19 times [2022-01-19 00:33:39,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:39,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354473853] [2022-01-19 00:33:39,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:39,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:39,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:39,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:39,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354473853] [2022-01-19 00:33:39,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354473853] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:39,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:39,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:39,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435194351] [2022-01-19 00:33:39,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:39,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:39,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:39,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:39,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:39,220 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:39,220 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 228 transitions, 1466 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:39,220 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:39,220 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:39,220 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:39,875 INFO L129 PetriNetUnfolder]: 321/1637 cut-off events. [2022-01-19 00:33:39,876 INFO L130 PetriNetUnfolder]: For 11799/11867 co-relation queries the response was YES. [2022-01-19 00:33:39,890 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6866 conditions, 1637 events. 321/1637 cut-off events. For 11799/11867 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12269 event pairs, 185 based on Foata normal form. 2/1577 useless extension candidates. Maximal degree in co-relation 6748. Up to 596 conditions per place. [2022-01-19 00:33:39,894 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 107 selfloop transitions, 30 changer transitions 38/321 dead transitions. [2022-01-19 00:33:39,894 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 321 transitions, 3122 flow [2022-01-19 00:33:39,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 00:33:39,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 00:33:39,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3703 transitions. [2022-01-19 00:33:39,896 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7600574712643678 [2022-01-19 00:33:39,896 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3703 transitions. [2022-01-19 00:33:39,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3703 transitions. [2022-01-19 00:33:39,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:39,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3703 transitions. [2022-01-19 00:33:39,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 132.25) internal successors, (3703), 28 states have internal predecessors, (3703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:39,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:39,901 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:39,901 INFO L186 Difference]: Start difference. First operand has 357 places, 228 transitions, 1466 flow. Second operand 28 states and 3703 transitions. [2022-01-19 00:33:39,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 321 transitions, 3122 flow [2022-01-19 00:33:39,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 321 transitions, 2944 flow, removed 38 selfloop flow, removed 20 redundant places. [2022-01-19 00:33:39,937 INFO L242 Difference]: Finished difference. Result has 346 places, 243 transitions, 1756 flow [2022-01-19 00:33:39,938 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1402, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1756, PETRI_PLACES=346, PETRI_TRANSITIONS=243} [2022-01-19 00:33:39,938 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 189 predicate places. [2022-01-19 00:33:39,938 INFO L470 AbstractCegarLoop]: Abstraction has has 346 places, 243 transitions, 1756 flow [2022-01-19 00:33:39,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:39,938 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:39,938 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] [2022-01-19 00:33:39,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-19 00:33:39,939 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:39,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:39,939 INFO L85 PathProgramCache]: Analyzing trace with hash 420148042, now seen corresponding path program 20 times [2022-01-19 00:33:39,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:39,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312094912] [2022-01-19 00:33:39,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:39,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:39,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:40,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:40,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:40,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312094912] [2022-01-19 00:33:40,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312094912] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:40,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:40,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:40,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666393257] [2022-01-19 00:33:40,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:40,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:40,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:40,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:40,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:40,064 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:40,065 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 243 transitions, 1756 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:40,065 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:40,065 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:40,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:40,649 INFO L129 PetriNetUnfolder]: 322/1624 cut-off events. [2022-01-19 00:33:40,649 INFO L130 PetriNetUnfolder]: For 11125/11193 co-relation queries the response was YES. [2022-01-19 00:33:40,669 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6954 conditions, 1624 events. 322/1624 cut-off events. For 11125/11193 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12201 event pairs, 192 based on Foata normal form. 2/1557 useless extension candidates. Maximal degree in co-relation 6833. Up to 603 conditions per place. [2022-01-19 00:33:40,674 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 100 selfloop transitions, 34 changer transitions 35/315 dead transitions. [2022-01-19 00:33:40,674 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 315 transitions, 3237 flow [2022-01-19 00:33:40,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-19 00:33:40,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-01-19 00:33:40,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3446 transitions. [2022-01-19 00:33:40,676 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617152961980548 [2022-01-19 00:33:40,676 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3446 transitions. [2022-01-19 00:33:40,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3446 transitions. [2022-01-19 00:33:40,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:40,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3446 transitions. [2022-01-19 00:33:40,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 132.53846153846155) internal successors, (3446), 26 states have internal predecessors, (3446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:40,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:40,680 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 174.0) internal successors, (4698), 27 states have internal predecessors, (4698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:40,680 INFO L186 Difference]: Start difference. First operand has 346 places, 243 transitions, 1756 flow. Second operand 26 states and 3446 transitions. [2022-01-19 00:33:40,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 315 transitions, 3237 flow [2022-01-19 00:33:40,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 315 transitions, 3052 flow, removed 73 selfloop flow, removed 15 redundant places. [2022-01-19 00:33:40,719 INFO L242 Difference]: Finished difference. Result has 359 places, 257 transitions, 2074 flow [2022-01-19 00:33:40,719 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1665, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=2074, PETRI_PLACES=359, PETRI_TRANSITIONS=257} [2022-01-19 00:33:40,719 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 202 predicate places. [2022-01-19 00:33:40,719 INFO L470 AbstractCegarLoop]: Abstraction has has 359 places, 257 transitions, 2074 flow [2022-01-19 00:33:40,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:40,719 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:40,720 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] [2022-01-19 00:33:40,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-19 00:33:40,720 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:40,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:40,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1942395372, now seen corresponding path program 21 times [2022-01-19 00:33:40,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:40,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078869519] [2022-01-19 00:33:40,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:40,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:40,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:40,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:40,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:40,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078869519] [2022-01-19 00:33:40,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078869519] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:40,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:40,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:40,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856857713] [2022-01-19 00:33:40,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:40,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:40,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:40,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:40,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:40,806 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:40,806 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 257 transitions, 2074 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:40,806 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:40,806 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:40,806 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:41,331 INFO L129 PetriNetUnfolder]: 318/1627 cut-off events. [2022-01-19 00:33:41,331 INFO L130 PetriNetUnfolder]: For 12778/12846 co-relation queries the response was YES. [2022-01-19 00:33:41,343 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7160 conditions, 1627 events. 318/1627 cut-off events. For 12778/12846 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12249 event pairs, 190 based on Foata normal form. 2/1562 useless extension candidates. Maximal degree in co-relation 7032. Up to 601 conditions per place. [2022-01-19 00:33:41,346 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 104 selfloop transitions, 36 changer transitions 39/325 dead transitions. [2022-01-19 00:33:41,346 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 325 transitions, 3501 flow [2022-01-19 00:33:41,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-19 00:33:41,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-01-19 00:33:41,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3575 transitions. [2022-01-19 00:33:41,348 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7609621115368241 [2022-01-19 00:33:41,348 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3575 transitions. [2022-01-19 00:33:41,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3575 transitions. [2022-01-19 00:33:41,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:41,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3575 transitions. [2022-01-19 00:33:41,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 132.40740740740742) internal successors, (3575), 27 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:41,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:41,353 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 174.0) internal successors, (4872), 28 states have internal predecessors, (4872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:41,353 INFO L186 Difference]: Start difference. First operand has 359 places, 257 transitions, 2074 flow. Second operand 27 states and 3575 transitions. [2022-01-19 00:33:41,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 325 transitions, 3501 flow [2022-01-19 00:33:41,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 325 transitions, 3245 flow, removed 108 selfloop flow, removed 16 redundant places. [2022-01-19 00:33:41,401 INFO L242 Difference]: Finished difference. Result has 372 places, 260 transitions, 2142 flow [2022-01-19 00:33:41,402 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1917, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2142, PETRI_PLACES=372, PETRI_TRANSITIONS=260} [2022-01-19 00:33:41,402 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 215 predicate places. [2022-01-19 00:33:41,402 INFO L470 AbstractCegarLoop]: Abstraction has has 372 places, 260 transitions, 2142 flow [2022-01-19 00:33:41,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:41,402 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:41,402 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:41,402 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-19 00:33:41,402 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:41,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:41,403 INFO L85 PathProgramCache]: Analyzing trace with hash -2032434546, now seen corresponding path program 22 times [2022-01-19 00:33:41,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:41,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143276513] [2022-01-19 00:33:41,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:41,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:41,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:41,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:41,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143276513] [2022-01-19 00:33:41,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143276513] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:41,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:41,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:41,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264734809] [2022-01-19 00:33:41,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:41,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:41,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:41,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:41,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:41,483 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:41,484 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 260 transitions, 2142 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:41,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:41,484 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:41,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:41,882 INFO L129 PetriNetUnfolder]: 311/1594 cut-off events. [2022-01-19 00:33:41,883 INFO L130 PetriNetUnfolder]: For 12310/12378 co-relation queries the response was YES. [2022-01-19 00:33:41,896 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6982 conditions, 1594 events. 311/1594 cut-off events. For 12310/12378 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11960 event pairs, 181 based on Foata normal form. 2/1533 useless extension candidates. Maximal degree in co-relation 6849. Up to 603 conditions per place. [2022-01-19 00:33:41,899 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 109 selfloop transitions, 39 changer transitions 31/325 dead transitions. [2022-01-19 00:33:41,899 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 325 transitions, 3439 flow [2022-01-19 00:33:41,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 00:33:41,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 00:33:41,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2920 transitions. [2022-01-19 00:33:41,901 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7628004179728317 [2022-01-19 00:33:41,901 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2920 transitions. [2022-01-19 00:33:41,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2920 transitions. [2022-01-19 00:33:41,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:41,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2920 transitions. [2022-01-19 00:33:41,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.72727272727272) internal successors, (2920), 22 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 00:33:41,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:41,905 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:41,905 INFO L186 Difference]: Start difference. First operand has 372 places, 260 transitions, 2142 flow. Second operand 22 states and 2920 transitions. [2022-01-19 00:33:41,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 325 transitions, 3439 flow [2022-01-19 00:33:41,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 325 transitions, 3189 flow, removed 87 selfloop flow, removed 19 redundant places. [2022-01-19 00:33:41,954 INFO L242 Difference]: Finished difference. Result has 368 places, 267 transitions, 2238 flow [2022-01-19 00:33:41,955 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1984, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2238, PETRI_PLACES=368, PETRI_TRANSITIONS=267} [2022-01-19 00:33:41,955 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 211 predicate places. [2022-01-19 00:33:41,955 INFO L470 AbstractCegarLoop]: Abstraction has has 368 places, 267 transitions, 2238 flow [2022-01-19 00:33:41,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:41,955 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:41,955 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:41,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-19 00:33:41,955 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:41,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:41,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1971432700, now seen corresponding path program 23 times [2022-01-19 00:33:41,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:41,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676249029] [2022-01-19 00:33:41,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:41,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:42,022 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 00:33:42,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:42,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676249029] [2022-01-19 00:33:42,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676249029] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:42,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:42,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:42,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792392046] [2022-01-19 00:33:42,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:42,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:42,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:42,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:42,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:42,024 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:42,024 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 267 transitions, 2238 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:42,024 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:42,024 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:42,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:42,472 INFO L129 PetriNetUnfolder]: 315/1602 cut-off events. [2022-01-19 00:33:42,472 INFO L130 PetriNetUnfolder]: For 11225/11293 co-relation queries the response was YES. [2022-01-19 00:33:42,488 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7018 conditions, 1602 events. 315/1602 cut-off events. For 11225/11293 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11979 event pairs, 191 based on Foata normal form. 2/1536 useless extension candidates. Maximal degree in co-relation 6891. Up to 605 conditions per place. [2022-01-19 00:33:42,491 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 103 selfloop transitions, 46 changer transitions 30/325 dead transitions. [2022-01-19 00:33:42,492 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 325 transitions, 3441 flow [2022-01-19 00:33:42,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 00:33:42,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 00:33:42,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2792 transitions. [2022-01-19 00:33:42,493 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7640941434044882 [2022-01-19 00:33:42,493 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2792 transitions. [2022-01-19 00:33:42,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2792 transitions. [2022-01-19 00:33:42,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:42,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2792 transitions. [2022-01-19 00:33:42,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 132.95238095238096) internal successors, (2792), 21 states have internal predecessors, (2792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:42,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:42,497 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:42,497 INFO L186 Difference]: Start difference. First operand has 368 places, 267 transitions, 2238 flow. Second operand 21 states and 2792 transitions. [2022-01-19 00:33:42,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 325 transitions, 3441 flow [2022-01-19 00:33:42,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 325 transitions, 3330 flow, removed 40 selfloop flow, removed 7 redundant places. [2022-01-19 00:33:42,550 INFO L242 Difference]: Finished difference. Result has 382 places, 277 transitions, 2486 flow [2022-01-19 00:33:42,550 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2158, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2486, PETRI_PLACES=382, PETRI_TRANSITIONS=277} [2022-01-19 00:33:42,550 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 225 predicate places. [2022-01-19 00:33:42,550 INFO L470 AbstractCegarLoop]: Abstraction has has 382 places, 277 transitions, 2486 flow [2022-01-19 00:33:42,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:42,551 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:42,551 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:42,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-19 00:33:42,551 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:42,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:42,551 INFO L85 PathProgramCache]: Analyzing trace with hash 319486182, now seen corresponding path program 24 times [2022-01-19 00:33:42,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:42,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579990172] [2022-01-19 00:33:42,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:42,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:42,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:42,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:42,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579990172] [2022-01-19 00:33:42,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579990172] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:42,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:42,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:42,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717030201] [2022-01-19 00:33:42,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:42,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:42,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:42,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:42,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:42,636 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:42,637 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 277 transitions, 2486 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:42,637 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:42,637 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:42,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:43,096 INFO L129 PetriNetUnfolder]: 311/1605 cut-off events. [2022-01-19 00:33:43,096 INFO L130 PetriNetUnfolder]: For 11604/11672 co-relation queries the response was YES. [2022-01-19 00:33:43,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7081 conditions, 1605 events. 311/1605 cut-off events. For 11604/11672 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12055 event pairs, 186 based on Foata normal form. 2/1540 useless extension candidates. Maximal degree in co-relation 6947. Up to 603 conditions per place. [2022-01-19 00:33:43,111 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 111 selfloop transitions, 41 changer transitions 31/329 dead transitions. [2022-01-19 00:33:43,112 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 329 transitions, 3666 flow [2022-01-19 00:33:43,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 00:33:43,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 00:33:43,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2923 transitions. [2022-01-19 00:33:43,113 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635841170323929 [2022-01-19 00:33:43,113 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2923 transitions. [2022-01-19 00:33:43,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2923 transitions. [2022-01-19 00:33:43,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:43,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2923 transitions. [2022-01-19 00:33:43,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.86363636363637) internal successors, (2923), 22 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 00:33:43,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:43,117 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:43,117 INFO L186 Difference]: Start difference. First operand has 382 places, 277 transitions, 2486 flow. Second operand 22 states and 2923 transitions. [2022-01-19 00:33:43,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 329 transitions, 3666 flow [2022-01-19 00:33:43,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 329 transitions, 3515 flow, removed 46 selfloop flow, removed 9 redundant places. [2022-01-19 00:33:43,176 INFO L242 Difference]: Finished difference. Result has 395 places, 281 transitions, 2595 flow [2022-01-19 00:33:43,177 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2375, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2595, PETRI_PLACES=395, PETRI_TRANSITIONS=281} [2022-01-19 00:33:43,177 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 238 predicate places. [2022-01-19 00:33:43,177 INFO L470 AbstractCegarLoop]: Abstraction has has 395 places, 281 transitions, 2595 flow [2022-01-19 00:33:43,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:43,177 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:43,177 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] [2022-01-19 00:33:43,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-19 00:33:43,178 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:43,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:43,178 INFO L85 PathProgramCache]: Analyzing trace with hash -859212732, now seen corresponding path program 25 times [2022-01-19 00:33:43,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:43,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584098185] [2022-01-19 00:33:43,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:43,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:43,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:43,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:43,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584098185] [2022-01-19 00:33:43,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584098185] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:43,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:43,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:43,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118945698] [2022-01-19 00:33:43,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:43,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:43,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:43,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:43,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:43,254 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:43,255 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 281 transitions, 2595 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:43,255 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:43,255 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:43,255 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:43,701 INFO L129 PetriNetUnfolder]: 317/1623 cut-off events. [2022-01-19 00:33:43,701 INFO L130 PetriNetUnfolder]: For 12486/12554 co-relation queries the response was YES. [2022-01-19 00:33:43,714 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7322 conditions, 1623 events. 317/1623 cut-off events. For 12486/12554 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12202 event pairs, 185 based on Foata normal form. 2/1556 useless extension candidates. Maximal degree in co-relation 7183. Up to 605 conditions per place. [2022-01-19 00:33:43,718 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 103 selfloop transitions, 56 changer transitions 28/333 dead transitions. [2022-01-19 00:33:43,718 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 333 transitions, 3854 flow [2022-01-19 00:33:43,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 00:33:43,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 00:33:43,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2663 transitions. [2022-01-19 00:33:43,719 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7652298850574712 [2022-01-19 00:33:43,720 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2663 transitions. [2022-01-19 00:33:43,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2663 transitions. [2022-01-19 00:33:43,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:43,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2663 transitions. [2022-01-19 00:33:43,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 133.15) internal successors, (2663), 20 states have internal predecessors, (2663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:43,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:43,723 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:43,723 INFO L186 Difference]: Start difference. First operand has 395 places, 281 transitions, 2595 flow. Second operand 20 states and 2663 transitions. [2022-01-19 00:33:43,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 333 transitions, 3854 flow [2022-01-19 00:33:43,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 333 transitions, 3703 flow, removed 58 selfloop flow, removed 7 redundant places. [2022-01-19 00:33:43,783 INFO L242 Difference]: Finished difference. Result has 409 places, 293 transitions, 2931 flow [2022-01-19 00:33:43,783 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2491, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2931, PETRI_PLACES=409, PETRI_TRANSITIONS=293} [2022-01-19 00:33:43,783 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 252 predicate places. [2022-01-19 00:33:43,783 INFO L470 AbstractCegarLoop]: Abstraction has has 409 places, 293 transitions, 2931 flow [2022-01-19 00:33:43,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:43,783 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:43,784 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:43,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-19 00:33:43,784 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:43,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:43,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1691902910, now seen corresponding path program 26 times [2022-01-19 00:33:43,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:43,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543796849] [2022-01-19 00:33:43,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:43,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:43,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:43,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:43,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543796849] [2022-01-19 00:33:43,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543796849] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:43,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:43,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:43,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406960066] [2022-01-19 00:33:43,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:43,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:43,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:43,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:43,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:43,869 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:43,869 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 293 transitions, 2931 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:43,869 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:43,869 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:43,869 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:44,349 INFO L129 PetriNetUnfolder]: 321/1633 cut-off events. [2022-01-19 00:33:44,349 INFO L130 PetriNetUnfolder]: For 13269/13337 co-relation queries the response was YES. [2022-01-19 00:33:44,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7610 conditions, 1633 events. 321/1633 cut-off events. For 13269/13337 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12298 event pairs, 187 based on Foata normal form. 2/1564 useless extension candidates. Maximal degree in co-relation 7463. Up to 607 conditions per place. [2022-01-19 00:33:44,369 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 123 selfloop transitions, 46 changer transitions 28/343 dead transitions. [2022-01-19 00:33:44,369 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 343 transitions, 4256 flow [2022-01-19 00:33:44,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 00:33:44,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 00:33:44,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2924 transitions. [2022-01-19 00:33:44,371 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7638453500522466 [2022-01-19 00:33:44,371 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2924 transitions. [2022-01-19 00:33:44,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2924 transitions. [2022-01-19 00:33:44,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:44,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2924 transitions. [2022-01-19 00:33:44,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.9090909090909) internal successors, (2924), 22 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:44,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:44,375 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 174.0) internal successors, (4002), 23 states have internal predecessors, (4002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:44,375 INFO L186 Difference]: Start difference. First operand has 409 places, 293 transitions, 2931 flow. Second operand 22 states and 2924 transitions. [2022-01-19 00:33:44,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 343 transitions, 4256 flow [2022-01-19 00:33:44,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 412 places, 343 transitions, 4020 flow, removed 70 selfloop flow, removed 9 redundant places. [2022-01-19 00:33:44,456 INFO L242 Difference]: Finished difference. Result has 422 places, 305 transitions, 3167 flow [2022-01-19 00:33:44,456 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2741, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3167, PETRI_PLACES=422, PETRI_TRANSITIONS=305} [2022-01-19 00:33:44,457 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 265 predicate places. [2022-01-19 00:33:44,457 INFO L470 AbstractCegarLoop]: Abstraction has has 422 places, 305 transitions, 3167 flow [2022-01-19 00:33:44,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:44,457 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:44,457 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:44,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-19 00:33:44,457 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:44,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:44,458 INFO L85 PathProgramCache]: Analyzing trace with hash 179737798, now seen corresponding path program 27 times [2022-01-19 00:33:44,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:44,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699283455] [2022-01-19 00:33:44,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:44,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:44,551 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 00:33:44,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:44,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699283455] [2022-01-19 00:33:44,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699283455] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:44,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:44,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:44,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982695689] [2022-01-19 00:33:44,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:44,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:44,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:44,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:44,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:44,553 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:44,553 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 305 transitions, 3167 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:44,553 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:44,553 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:44,553 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:45,047 INFO L129 PetriNetUnfolder]: 316/1633 cut-off events. [2022-01-19 00:33:45,048 INFO L130 PetriNetUnfolder]: For 13511/13579 co-relation queries the response was YES. [2022-01-19 00:33:45,062 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7563 conditions, 1633 events. 316/1633 cut-off events. For 13511/13579 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12307 event pairs, 182 based on Foata normal form. 2/1566 useless extension candidates. Maximal degree in co-relation 7412. Up to 605 conditions per place. [2022-01-19 00:33:45,066 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 126 selfloop transitions, 48 changer transitions 30/350 dead transitions. [2022-01-19 00:33:45,066 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 350 transitions, 4435 flow [2022-01-19 00:33:45,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 00:33:45,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 00:33:45,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2797 transitions. [2022-01-19 00:33:45,068 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7654625068418172 [2022-01-19 00:33:45,068 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2797 transitions. [2022-01-19 00:33:45,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2797 transitions. [2022-01-19 00:33:45,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:45,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2797 transitions. [2022-01-19 00:33:45,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 133.1904761904762) internal successors, (2797), 21 states have internal predecessors, (2797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:45,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:45,071 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 174.0) internal successors, (3828), 22 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:45,072 INFO L186 Difference]: Start difference. First operand has 422 places, 305 transitions, 3167 flow. Second operand 21 states and 2797 transitions. [2022-01-19 00:33:45,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 350 transitions, 4435 flow [2022-01-19 00:33:45,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 350 transitions, 4164 flow, removed 116 selfloop flow, removed 6 redundant places. [2022-01-19 00:33:45,156 INFO L242 Difference]: Finished difference. Result has 437 places, 312 transitions, 3294 flow [2022-01-19 00:33:45,156 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2991, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3294, PETRI_PLACES=437, PETRI_TRANSITIONS=312} [2022-01-19 00:33:45,156 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 280 predicate places. [2022-01-19 00:33:45,156 INFO L470 AbstractCegarLoop]: Abstraction has has 437 places, 312 transitions, 3294 flow [2022-01-19 00:33:45,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:45,156 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:45,157 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:45,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-19 00:33:45,157 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:45,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:45,157 INFO L85 PathProgramCache]: Analyzing trace with hash -876895094, now seen corresponding path program 28 times [2022-01-19 00:33:45,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:45,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891773237] [2022-01-19 00:33:45,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:45,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:45,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:45,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:45,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:45,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891773237] [2022-01-19 00:33:45,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891773237] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:45,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:45,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:45,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499551917] [2022-01-19 00:33:45,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:45,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:45,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:45,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:45,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:45,235 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:45,236 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 312 transitions, 3294 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:45,236 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:45,236 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:45,236 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:45,695 INFO L129 PetriNetUnfolder]: 308/1618 cut-off events. [2022-01-19 00:33:45,696 INFO L130 PetriNetUnfolder]: For 12695/12763 co-relation queries the response was YES. [2022-01-19 00:33:45,712 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7343 conditions, 1618 events. 308/1618 cut-off events. For 12695/12763 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12267 event pairs, 179 based on Foata normal form. 2/1557 useless extension candidates. Maximal degree in co-relation 7184. Up to 602 conditions per place. [2022-01-19 00:33:45,716 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 129 selfloop transitions, 36 changer transitions 40/351 dead transitions. [2022-01-19 00:33:45,716 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 351 transitions, 4167 flow [2022-01-19 00:33:45,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:33:45,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:33:45,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2400 transitions. [2022-01-19 00:33:45,717 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7662835249042146 [2022-01-19 00:33:45,717 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2400 transitions. [2022-01-19 00:33:45,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2400 transitions. [2022-01-19 00:33:45,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:45,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2400 transitions. [2022-01-19 00:33:45,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 133.33333333333334) internal successors, (2400), 18 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:45,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:45,721 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 174.0) internal successors, (3306), 19 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:45,721 INFO L186 Difference]: Start difference. First operand has 437 places, 312 transitions, 3294 flow. Second operand 18 states and 2400 transitions. [2022-01-19 00:33:45,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 351 transitions, 4167 flow [2022-01-19 00:33:45,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 351 transitions, 4039 flow, removed 43 selfloop flow, removed 10 redundant places. [2022-01-19 00:33:45,803 INFO L242 Difference]: Finished difference. Result has 439 places, 292 transitions, 2869 flow [2022-01-19 00:33:45,804 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3172, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2869, PETRI_PLACES=439, PETRI_TRANSITIONS=292} [2022-01-19 00:33:45,804 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 282 predicate places. [2022-01-19 00:33:45,804 INFO L470 AbstractCegarLoop]: Abstraction has has 439 places, 292 transitions, 2869 flow [2022-01-19 00:33:45,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:45,804 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:45,804 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] [2022-01-19 00:33:45,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-19 00:33:45,805 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:45,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:45,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1930430014, now seen corresponding path program 29 times [2022-01-19 00:33:45,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:45,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134027316] [2022-01-19 00:33:45,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:45,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:45,905 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 00:33:45,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:45,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134027316] [2022-01-19 00:33:45,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134027316] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:45,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:45,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:45,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509357049] [2022-01-19 00:33:45,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:45,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:45,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:45,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:45,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:45,907 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:45,908 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 292 transitions, 2869 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:45,908 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:45,908 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:45,908 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:46,436 INFO L129 PetriNetUnfolder]: 303/1602 cut-off events. [2022-01-19 00:33:46,436 INFO L130 PetriNetUnfolder]: For 12308/12376 co-relation queries the response was YES. [2022-01-19 00:33:46,449 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7183 conditions, 1602 events. 303/1602 cut-off events. For 12308/12376 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12116 event pairs, 183 based on Foata normal form. 2/1537 useless extension candidates. Maximal degree in co-relation 7027. Up to 600 conditions per place. [2022-01-19 00:33:46,452 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 120 selfloop transitions, 27 changer transitions 38/331 dead transitions. [2022-01-19 00:33:46,452 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 331 transitions, 3764 flow [2022-01-19 00:33:46,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-19 00:33:46,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-19 00:33:46,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2531 transitions. [2022-01-19 00:33:46,454 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655777374470659 [2022-01-19 00:33:46,454 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2531 transitions. [2022-01-19 00:33:46,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2531 transitions. [2022-01-19 00:33:46,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:46,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2531 transitions. [2022-01-19 00:33:46,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.21052631578948) internal successors, (2531), 19 states have internal predecessors, (2531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:46,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:46,458 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:46,458 INFO L186 Difference]: Start difference. First operand has 439 places, 292 transitions, 2869 flow. Second operand 19 states and 2531 transitions. [2022-01-19 00:33:46,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 331 transitions, 3764 flow [2022-01-19 00:33:46,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 331 transitions, 3487 flow, removed 30 selfloop flow, removed 23 redundant places. [2022-01-19 00:33:46,527 INFO L242 Difference]: Finished difference. Result has 417 places, 281 transitions, 2518 flow [2022-01-19 00:33:46,527 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2651, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2518, PETRI_PLACES=417, PETRI_TRANSITIONS=281} [2022-01-19 00:33:46,527 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 260 predicate places. [2022-01-19 00:33:46,527 INFO L470 AbstractCegarLoop]: Abstraction has has 417 places, 281 transitions, 2518 flow [2022-01-19 00:33:46,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:46,528 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:46,528 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] [2022-01-19 00:33:46,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-19 00:33:46,528 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:46,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:46,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1748211298, now seen corresponding path program 30 times [2022-01-19 00:33:46,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:46,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711140298] [2022-01-19 00:33:46,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:46,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:46,608 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 00:33:46,608 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:46,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711140298] [2022-01-19 00:33:46,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711140298] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:46,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:46,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:46,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307204220] [2022-01-19 00:33:46,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:46,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:46,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:46,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:46,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:46,610 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:46,611 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 417 places, 281 transitions, 2518 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:46,611 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:46,611 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:46,611 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:47,113 INFO L129 PetriNetUnfolder]: 288/1544 cut-off events. [2022-01-19 00:33:47,113 INFO L130 PetriNetUnfolder]: For 10362/10430 co-relation queries the response was YES. [2022-01-19 00:33:47,129 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6495 conditions, 1544 events. 288/1544 cut-off events. For 10362/10430 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11548 event pairs, 180 based on Foata normal form. 2/1481 useless extension candidates. Maximal degree in co-relation 6346. Up to 596 conditions per place. [2022-01-19 00:33:47,132 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 109 selfloop transitions, 15 changer transitions 39/309 dead transitions. [2022-01-19 00:33:47,132 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 309 transitions, 3139 flow [2022-01-19 00:33:47,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 00:33:47,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 00:33:47,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2651 transitions. [2022-01-19 00:33:47,134 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617816091954023 [2022-01-19 00:33:47,134 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2651 transitions. [2022-01-19 00:33:47,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2651 transitions. [2022-01-19 00:33:47,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:47,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2651 transitions. [2022-01-19 00:33:47,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.55) internal successors, (2651), 20 states have internal predecessors, (2651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:47,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:47,137 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:47,137 INFO L186 Difference]: Start difference. First operand has 417 places, 281 transitions, 2518 flow. Second operand 20 states and 2651 transitions. [2022-01-19 00:33:47,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 309 transitions, 3139 flow [2022-01-19 00:33:47,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 309 transitions, 2988 flow, removed 21 selfloop flow, removed 23 redundant places. [2022-01-19 00:33:47,195 INFO L242 Difference]: Finished difference. Result has 400 places, 258 transitions, 2065 flow [2022-01-19 00:33:47,195 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2390, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2065, PETRI_PLACES=400, PETRI_TRANSITIONS=258} [2022-01-19 00:33:47,196 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 243 predicate places. [2022-01-19 00:33:47,196 INFO L470 AbstractCegarLoop]: Abstraction has has 400 places, 258 transitions, 2065 flow [2022-01-19 00:33:47,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:47,196 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:47,196 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:47,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-19 00:33:47,196 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:47,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:47,197 INFO L85 PathProgramCache]: Analyzing trace with hash -839816810, now seen corresponding path program 31 times [2022-01-19 00:33:47,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:47,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812504243] [2022-01-19 00:33:47,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:47,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:47,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:47,277 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 00:33:47,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:47,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812504243] [2022-01-19 00:33:47,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812504243] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:47,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:47,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:47,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552328453] [2022-01-19 00:33:47,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:47,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:47,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:47,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:47,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:47,279 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:47,279 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 258 transitions, 2065 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:47,279 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:47,279 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:47,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:47,769 INFO L129 PetriNetUnfolder]: 299/1572 cut-off events. [2022-01-19 00:33:47,769 INFO L130 PetriNetUnfolder]: For 10476/10544 co-relation queries the response was YES. [2022-01-19 00:33:47,786 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6608 conditions, 1572 events. 299/1572 cut-off events. For 10476/10544 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11745 event pairs, 184 based on Foata normal form. 2/1506 useless extension candidates. Maximal degree in co-relation 6468. Up to 596 conditions per place. [2022-01-19 00:33:47,789 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 91 selfloop transitions, 37 changer transitions 39/313 dead transitions. [2022-01-19 00:33:47,790 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 313 transitions, 3183 flow [2022-01-19 00:33:47,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 00:33:47,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 00:33:47,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3188 transitions. [2022-01-19 00:33:47,791 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7634099616858238 [2022-01-19 00:33:47,791 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3188 transitions. [2022-01-19 00:33:47,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3188 transitions. [2022-01-19 00:33:47,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:47,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3188 transitions. [2022-01-19 00:33:47,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 132.83333333333334) internal successors, (3188), 24 states have internal predecessors, (3188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:47,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 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 00:33:47,796 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 174.0) internal successors, (4350), 25 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 00:33:47,796 INFO L186 Difference]: Start difference. First operand has 400 places, 258 transitions, 2065 flow. Second operand 24 states and 3188 transitions. [2022-01-19 00:33:47,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 313 transitions, 3183 flow [2022-01-19 00:33:47,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 313 transitions, 2985 flow, removed 24 selfloop flow, removed 20 redundant places. [2022-01-19 00:33:47,848 INFO L242 Difference]: Finished difference. Result has 386 places, 263 transitions, 2176 flow [2022-01-19 00:33:47,848 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1954, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2176, PETRI_PLACES=386, PETRI_TRANSITIONS=263} [2022-01-19 00:33:47,848 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 229 predicate places. [2022-01-19 00:33:47,848 INFO L470 AbstractCegarLoop]: Abstraction has has 386 places, 263 transitions, 2176 flow [2022-01-19 00:33:47,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:47,849 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:47,849 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] [2022-01-19 00:33:47,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-19 00:33:47,849 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:47,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:47,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1447701686, now seen corresponding path program 32 times [2022-01-19 00:33:47,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:47,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698957163] [2022-01-19 00:33:47,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:47,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:47,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:47,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:47,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698957163] [2022-01-19 00:33:47,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698957163] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:47,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:47,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:47,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162846686] [2022-01-19 00:33:47,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:47,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:47,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:47,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:47,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:47,946 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:47,946 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 263 transitions, 2176 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:47,946 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:47,946 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:47,946 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:48,433 INFO L129 PetriNetUnfolder]: 294/1570 cut-off events. [2022-01-19 00:33:48,434 INFO L130 PetriNetUnfolder]: For 9845/9913 co-relation queries the response was YES. [2022-01-19 00:33:48,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6400 conditions, 1570 events. 294/1570 cut-off events. For 9845/9913 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11715 event pairs, 179 based on Foata normal form. 2/1504 useless extension candidates. Maximal degree in co-relation 6259. Up to 596 conditions per place. [2022-01-19 00:33:48,454 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 95 selfloop transitions, 32 changer transitions 44/317 dead transitions. [2022-01-19 00:33:48,454 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 393 places, 317 transitions, 3274 flow [2022-01-19 00:33:48,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-19 00:33:48,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-01-19 00:33:48,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3057 transitions. [2022-01-19 00:33:48,455 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7638680659670165 [2022-01-19 00:33:48,456 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3057 transitions. [2022-01-19 00:33:48,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3057 transitions. [2022-01-19 00:33:48,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:48,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3057 transitions. [2022-01-19 00:33:48,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 132.91304347826087) internal successors, (3057), 23 states have internal predecessors, (3057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:48,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:48,460 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 174.0) internal successors, (4176), 24 states have internal predecessors, (4176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:48,460 INFO L186 Difference]: Start difference. First operand has 386 places, 263 transitions, 2176 flow. Second operand 23 states and 3057 transitions. [2022-01-19 00:33:48,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 393 places, 317 transitions, 3274 flow [2022-01-19 00:33:48,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 317 transitions, 3154 flow, removed 42 selfloop flow, removed 14 redundant places. [2022-01-19 00:33:48,508 INFO L242 Difference]: Finished difference. Result has 392 places, 262 transitions, 2194 flow [2022-01-19 00:33:48,508 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2098, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2194, PETRI_PLACES=392, PETRI_TRANSITIONS=262} [2022-01-19 00:33:48,508 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 235 predicate places. [2022-01-19 00:33:48,508 INFO L470 AbstractCegarLoop]: Abstraction has has 392 places, 262 transitions, 2194 flow [2022-01-19 00:33:48,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:48,508 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:48,509 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:48,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-19 00:33:48,509 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:48,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:48,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1224200426, now seen corresponding path program 33 times [2022-01-19 00:33:48,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:48,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735514953] [2022-01-19 00:33:48,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:48,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:48,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:48,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:48,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735514953] [2022-01-19 00:33:48,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735514953] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:48,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:48,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:48,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730736642] [2022-01-19 00:33:48,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:48,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:48,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:48,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:48,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:48,604 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:48,605 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 262 transitions, 2194 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:48,605 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:48,605 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:48,605 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:49,001 INFO L129 PetriNetUnfolder]: 276/1513 cut-off events. [2022-01-19 00:33:49,002 INFO L130 PetriNetUnfolder]: For 9111/9179 co-relation queries the response was YES. [2022-01-19 00:33:49,016 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6027 conditions, 1513 events. 276/1513 cut-off events. For 9111/9179 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11269 event pairs, 177 based on Foata normal form. 2/1447 useless extension candidates. Maximal degree in co-relation 5885. Up to 594 conditions per place. [2022-01-19 00:33:49,019 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 83 selfloop transitions, 21 changer transitions 37/287 dead transitions. [2022-01-19 00:33:49,019 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 287 transitions, 2743 flow [2022-01-19 00:33:49,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 00:33:49,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 00:33:49,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2659 transitions. [2022-01-19 00:33:49,020 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764080459770115 [2022-01-19 00:33:49,020 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2659 transitions. [2022-01-19 00:33:49,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2659 transitions. [2022-01-19 00:33:49,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:49,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2659 transitions. [2022-01-19 00:33:49,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.95) internal successors, (2659), 20 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:49,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:49,024 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:49,024 INFO L186 Difference]: Start difference. First operand has 392 places, 262 transitions, 2194 flow. Second operand 20 states and 2659 transitions. [2022-01-19 00:33:49,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 287 transitions, 2743 flow [2022-01-19 00:33:49,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 287 transitions, 2572 flow, removed 33 selfloop flow, removed 21 redundant places. [2022-01-19 00:33:49,069 INFO L242 Difference]: Finished difference. Result has 383 places, 244 transitions, 1807 flow [2022-01-19 00:33:49,069 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2044, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1807, PETRI_PLACES=383, PETRI_TRANSITIONS=244} [2022-01-19 00:33:49,070 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 226 predicate places. [2022-01-19 00:33:49,070 INFO L470 AbstractCegarLoop]: Abstraction has has 383 places, 244 transitions, 1807 flow [2022-01-19 00:33:49,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:49,070 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:49,070 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:49,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-19 00:33:49,070 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:49,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:49,071 INFO L85 PathProgramCache]: Analyzing trace with hash -267571106, now seen corresponding path program 34 times [2022-01-19 00:33:49,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:49,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390532339] [2022-01-19 00:33:49,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:49,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:49,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:49,161 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:49,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390532339] [2022-01-19 00:33:49,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390532339] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:49,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:49,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:49,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270447916] [2022-01-19 00:33:49,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:49,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:49,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:49,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:49,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:49,162 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:49,163 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 244 transitions, 1807 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:49,163 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:49,163 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:49,163 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:49,541 INFO L129 PetriNetUnfolder]: 271/1492 cut-off events. [2022-01-19 00:33:49,541 INFO L130 PetriNetUnfolder]: For 8404/8472 co-relation queries the response was YES. [2022-01-19 00:33:49,555 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5785 conditions, 1492 events. 271/1492 cut-off events. For 8404/8472 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 11044 event pairs, 178 based on Foata normal form. 2/1426 useless extension candidates. Maximal degree in co-relation 5652. Up to 592 conditions per place. [2022-01-19 00:33:49,558 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 77 selfloop transitions, 16 changer transitions 36/275 dead transitions. [2022-01-19 00:33:49,559 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 275 transitions, 2441 flow [2022-01-19 00:33:49,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-19 00:33:49,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-01-19 00:33:49,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2528 transitions. [2022-01-19 00:33:49,560 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764670296430732 [2022-01-19 00:33:49,560 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2528 transitions. [2022-01-19 00:33:49,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2528 transitions. [2022-01-19 00:33:49,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:49,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2528 transitions. [2022-01-19 00:33:49,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 133.05263157894737) internal successors, (2528), 19 states have internal predecessors, (2528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:49,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:49,564 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 174.0) internal successors, (3480), 20 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:49,564 INFO L186 Difference]: Start difference. First operand has 383 places, 244 transitions, 1807 flow. Second operand 19 states and 2528 transitions. [2022-01-19 00:33:49,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 275 transitions, 2441 flow [2022-01-19 00:33:49,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 275 transitions, 2267 flow, removed 21 selfloop flow, removed 22 redundant places. [2022-01-19 00:33:49,601 INFO L242 Difference]: Finished difference. Result has 361 places, 233 transitions, 1553 flow [2022-01-19 00:33:49,601 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1675, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1553, PETRI_PLACES=361, PETRI_TRANSITIONS=233} [2022-01-19 00:33:49,601 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 204 predicate places. [2022-01-19 00:33:49,601 INFO L470 AbstractCegarLoop]: Abstraction has has 361 places, 233 transitions, 1553 flow [2022-01-19 00:33:49,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:49,601 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:49,601 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:49,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-19 00:33:49,602 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:49,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:49,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1344371362, now seen corresponding path program 35 times [2022-01-19 00:33:49,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:49,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434182810] [2022-01-19 00:33:49,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:49,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:49,682 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 00:33:49,682 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:49,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434182810] [2022-01-19 00:33:49,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434182810] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:49,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:49,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-19 00:33:49,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580424251] [2022-01-19 00:33:49,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:49,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 00:33:49,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:49,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 00:33:49,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-01-19 00:33:49,684 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 174 [2022-01-19 00:33:49,684 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 233 transitions, 1553 flow. Second operand has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:49,685 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:49,685 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 174 [2022-01-19 00:33:49,685 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:50,031 INFO L129 PetriNetUnfolder]: 256/1404 cut-off events. [2022-01-19 00:33:50,031 INFO L130 PetriNetUnfolder]: For 7395/7463 co-relation queries the response was YES. [2022-01-19 00:33:50,045 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5272 conditions, 1404 events. 256/1404 cut-off events. For 7395/7463 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 10231 event pairs, 171 based on Foata normal form. 2/1340 useless extension candidates. Maximal degree in co-relation 5146. Up to 571 conditions per place. [2022-01-19 00:33:50,048 INFO L132 encePairwiseOnDemand]: 159/174 looper letters, 66 selfloop transitions, 2 changer transitions 40/252 dead transitions. [2022-01-19 00:33:50,048 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 252 transitions, 1941 flow [2022-01-19 00:33:50,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 00:33:50,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 00:33:50,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2645 transitions. [2022-01-19 00:33:50,049 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7600574712643678 [2022-01-19 00:33:50,049 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 2645 transitions. [2022-01-19 00:33:50,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 2645 transitions. [2022-01-19 00:33:50,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:50,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 2645 transitions. [2022-01-19 00:33:50,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 132.25) internal successors, (2645), 20 states have internal predecessors, (2645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:50,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:50,053 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 174.0) internal successors, (3654), 21 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:50,053 INFO L186 Difference]: Start difference. First operand has 361 places, 233 transitions, 1553 flow. Second operand 20 states and 2645 transitions. [2022-01-19 00:33:50,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 252 transitions, 1941 flow [2022-01-19 00:33:50,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 252 transitions, 1834 flow, removed 21 selfloop flow, removed 22 redundant places. [2022-01-19 00:33:50,086 INFO L242 Difference]: Finished difference. Result has 345 places, 206 transitions, 1141 flow [2022-01-19 00:33:50,086 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1465, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1141, PETRI_PLACES=345, PETRI_TRANSITIONS=206} [2022-01-19 00:33:50,086 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 188 predicate places. [2022-01-19 00:33:50,086 INFO L470 AbstractCegarLoop]: Abstraction has has 345 places, 206 transitions, 1141 flow [2022-01-19 00:33:50,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 130.72727272727272) internal successors, (1438), 11 states have internal predecessors, (1438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:50,087 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:50,087 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:50,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-19 00:33:50,087 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:50,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:50,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1165386839, now seen corresponding path program 1 times [2022-01-19 00:33:50,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:50,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504716947] [2022-01-19 00:33:50,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:50,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:50,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:50,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:50,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504716947] [2022-01-19 00:33:50,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504716947] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:50,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:50,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-01-19 00:33:50,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309366591] [2022-01-19 00:33:50,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:50,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 00:33:50,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:50,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 00:33:50,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-01-19 00:33:50,285 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 174 [2022-01-19 00:33:50,286 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 206 transitions, 1141 flow. Second operand has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:50,286 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:50,286 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 174 [2022-01-19 00:33:50,286 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:51,599 INFO L129 PetriNetUnfolder]: 769/3123 cut-off events. [2022-01-19 00:33:51,600 INFO L130 PetriNetUnfolder]: For 14013/14047 co-relation queries the response was YES. [2022-01-19 00:33:51,624 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10237 conditions, 3123 events. 769/3123 cut-off events. For 14013/14047 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 25836 event pairs, 277 based on Foata normal form. 27/3032 useless extension candidates. Maximal degree in co-relation 10119. Up to 518 conditions per place. [2022-01-19 00:33:51,631 INFO L132 encePairwiseOnDemand]: 147/174 looper letters, 257 selfloop transitions, 35 changer transitions 60/439 dead transitions. [2022-01-19 00:33:51,631 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 439 transitions, 3413 flow [2022-01-19 00:33:51,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-19 00:33:51,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-01-19 00:33:51,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3042 transitions. [2022-01-19 00:33:51,633 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.624384236453202 [2022-01-19 00:33:51,633 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3042 transitions. [2022-01-19 00:33:51,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3042 transitions. [2022-01-19 00:33:51,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:51,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3042 transitions. [2022-01-19 00:33:51,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 108.64285714285714) internal successors, (3042), 28 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:51,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:51,637 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 174.0) internal successors, (5046), 29 states have internal predecessors, (5046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:51,637 INFO L186 Difference]: Start difference. First operand has 345 places, 206 transitions, 1141 flow. Second operand 28 states and 3042 transitions. [2022-01-19 00:33:51,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 439 transitions, 3413 flow [2022-01-19 00:33:51,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 439 transitions, 3223 flow, removed 73 selfloop flow, removed 28 redundant places. [2022-01-19 00:33:51,672 INFO L242 Difference]: Finished difference. Result has 331 places, 214 transitions, 1298 flow [2022-01-19 00:33:51,672 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1066, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1298, PETRI_PLACES=331, PETRI_TRANSITIONS=214} [2022-01-19 00:33:51,672 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 174 predicate places. [2022-01-19 00:33:51,672 INFO L470 AbstractCegarLoop]: Abstraction has has 331 places, 214 transitions, 1298 flow [2022-01-19 00:33:51,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 101.83333333333333) internal successors, (1833), 18 states have internal predecessors, (1833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:51,672 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:51,673 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:51,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-01-19 00:33:51,673 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:51,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:51,673 INFO L85 PathProgramCache]: Analyzing trace with hash -2074009625, now seen corresponding path program 2 times [2022-01-19 00:33:51,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:51,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616933734] [2022-01-19 00:33:51,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:51,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:51,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:51,741 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 00:33:51,741 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:51,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616933734] [2022-01-19 00:33:51,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616933734] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:51,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:51,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:33:51,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252333083] [2022-01-19 00:33:51,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:51,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:33:51,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:51,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:33:51,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:33:51,742 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2022-01-19 00:33:51,743 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 214 transitions, 1298 flow. Second operand has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:51,743 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:51,743 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2022-01-19 00:33:51,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:51,919 INFO L129 PetriNetUnfolder]: 121/1138 cut-off events. [2022-01-19 00:33:51,919 INFO L130 PetriNetUnfolder]: For 7057/7098 co-relation queries the response was YES. [2022-01-19 00:33:51,929 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3815 conditions, 1138 events. 121/1138 cut-off events. For 7057/7098 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 7597 event pairs, 66 based on Foata normal form. 28/1126 useless extension candidates. Maximal degree in co-relation 3697. Up to 76 conditions per place. [2022-01-19 00:33:51,931 INFO L132 encePairwiseOnDemand]: 164/174 looper letters, 39 selfloop transitions, 6 changer transitions 28/220 dead transitions. [2022-01-19 00:33:51,932 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 220 transitions, 1411 flow [2022-01-19 00:33:51,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:33:51,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:33:51,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 746 transitions. [2022-01-19 00:33:51,932 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8574712643678161 [2022-01-19 00:33:51,933 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 746 transitions. [2022-01-19 00:33:51,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 746 transitions. [2022-01-19 00:33:51,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:51,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 746 transitions. [2022-01-19 00:33:51,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.2) internal successors, (746), 5 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:51,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:51,934 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 174.0) internal successors, (1044), 6 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:51,934 INFO L186 Difference]: Start difference. First operand has 331 places, 214 transitions, 1298 flow. Second operand 5 states and 746 transitions. [2022-01-19 00:33:51,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 220 transitions, 1411 flow [2022-01-19 00:33:51,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 220 transitions, 1222 flow, removed 81 selfloop flow, removed 31 redundant places. [2022-01-19 00:33:51,959 INFO L242 Difference]: Finished difference. Result has 274 places, 187 transitions, 874 flow [2022-01-19 00:33:51,959 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1056, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=874, PETRI_PLACES=274, PETRI_TRANSITIONS=187} [2022-01-19 00:33:51,959 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 117 predicate places. [2022-01-19 00:33:51,959 INFO L470 AbstractCegarLoop]: Abstraction has has 274 places, 187 transitions, 874 flow [2022-01-19 00:33:51,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.4) internal successors, (717), 5 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:51,959 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:51,959 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:51,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-01-19 00:33:51,960 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:51,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:51,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1146373095, now seen corresponding path program 1 times [2022-01-19 00:33:51,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:51,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590740620] [2022-01-19 00:33:51,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:51,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:52,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:33:52,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:52,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590740620] [2022-01-19 00:33:52,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590740620] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:52,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:52,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 00:33:52,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640843355] [2022-01-19 00:33:52,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:52,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 00:33:52,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:52,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 00:33:52,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-19 00:33:52,028 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 174 [2022-01-19 00:33:52,029 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 187 transitions, 874 flow. Second operand has 4 states, 4 states have (on average 144.25) internal successors, (577), 4 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:52,029 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:52,029 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 174 [2022-01-19 00:33:52,029 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:33:52,102 INFO L129 PetriNetUnfolder]: 42/474 cut-off events. [2022-01-19 00:33:52,102 INFO L130 PetriNetUnfolder]: For 1167/1167 co-relation queries the response was YES. [2022-01-19 00:33:52,105 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1211 conditions, 474 events. 42/474 cut-off events. For 1167/1167 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1944 event pairs, 29 based on Foata normal form. 10/461 useless extension candidates. Maximal degree in co-relation 1123. Up to 65 conditions per place. [2022-01-19 00:33:52,106 INFO L132 encePairwiseOnDemand]: 170/174 looper letters, 27 selfloop transitions, 2 changer transitions 0/148 dead transitions. [2022-01-19 00:33:52,106 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 148 transitions, 591 flow [2022-01-19 00:33:52,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 00:33:52,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 00:33:52,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 445 transitions. [2022-01-19 00:33:52,107 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8524904214559387 [2022-01-19 00:33:52,107 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 445 transitions. [2022-01-19 00:33:52,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 445 transitions. [2022-01-19 00:33:52,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:33:52,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 445 transitions. [2022-01-19 00:33:52,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:52,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:52,108 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:52,108 INFO L186 Difference]: Start difference. First operand has 274 places, 187 transitions, 874 flow. Second operand 3 states and 445 transitions. [2022-01-19 00:33:52,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 148 transitions, 591 flow [2022-01-19 00:33:52,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 148 transitions, 489 flow, removed 32 selfloop flow, removed 32 redundant places. [2022-01-19 00:33:52,112 INFO L242 Difference]: Finished difference. Result has 207 places, 147 transitions, 432 flow [2022-01-19 00:33:52,112 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=432, PETRI_PLACES=207, PETRI_TRANSITIONS=147} [2022-01-19 00:33:52,112 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 50 predicate places. [2022-01-19 00:33:52,112 INFO L470 AbstractCegarLoop]: Abstraction has has 207 places, 147 transitions, 432 flow [2022-01-19 00:33:52,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 144.25) internal successors, (577), 4 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:52,113 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:33:52,113 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:33:52,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-01-19 00:33:52,113 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:33:52,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:33:52,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1592495771, now seen corresponding path program 1 times [2022-01-19 00:33:52,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:33:52,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236501757] [2022-01-19 00:33:52,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:33:52,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:33:52,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:33:52,712 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 00:33:52,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:33:52,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236501757] [2022-01-19 00:33:52,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236501757] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:33:52,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:33:52,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-01-19 00:33:52,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75925404] [2022-01-19 00:33:52,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:33:52,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-01-19 00:33:52,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:33:52,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-01-19 00:33:52,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=834, Unknown=0, NotChecked=0, Total=930 [2022-01-19 00:33:52,714 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 00:33:52,715 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 147 transitions, 432 flow. Second operand has 31 states, 31 states have (on average 85.19354838709677) internal successors, (2641), 31 states have internal predecessors, (2641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:33:52,715 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:33:52,715 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 00:33:52,715 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:34:02,945 INFO L129 PetriNetUnfolder]: 586/1835 cut-off events. [2022-01-19 00:34:02,945 INFO L130 PetriNetUnfolder]: For 2210/2210 co-relation queries the response was YES. [2022-01-19 00:34:02,951 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4485 conditions, 1835 events. 586/1835 cut-off events. For 2210/2210 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 11013 event pairs, 0 based on Foata normal form. 1/1810 useless extension candidates. Maximal degree in co-relation 4425. Up to 135 conditions per place. [2022-01-19 00:34:02,954 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 342 selfloop transitions, 20 changer transitions 183/616 dead transitions. [2022-01-19 00:34:02,954 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 616 transitions, 3478 flow [2022-01-19 00:34:02,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-19 00:34:02,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2022-01-19 00:34:02,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 7849 transitions. [2022-01-19 00:34:02,958 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5126044932079414 [2022-01-19 00:34:02,958 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 7849 transitions. [2022-01-19 00:34:02,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 7849 transitions. [2022-01-19 00:34:02,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:34:02,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 7849 transitions. [2022-01-19 00:34:02,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 89.19318181818181) internal successors, (7849), 88 states have internal predecessors, (7849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:34:02,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:34:02,970 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:34:02,971 INFO L186 Difference]: Start difference. First operand has 207 places, 147 transitions, 432 flow. Second operand 88 states and 7849 transitions. [2022-01-19 00:34:02,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 616 transitions, 3478 flow [2022-01-19 00:34:02,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 616 transitions, 3472 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-01-19 00:34:02,979 INFO L242 Difference]: Finished difference. Result has 364 places, 147 transitions, 619 flow [2022-01-19 00:34:02,979 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=619, PETRI_PLACES=364, PETRI_TRANSITIONS=147} [2022-01-19 00:34:02,979 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 207 predicate places. [2022-01-19 00:34:02,979 INFO L470 AbstractCegarLoop]: Abstraction has has 364 places, 147 transitions, 619 flow [2022-01-19 00:34:02,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 85.19354838709677) internal successors, (2641), 31 states have internal predecessors, (2641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:34:02,980 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:34:02,980 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:34:02,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-01-19 00:34:02,980 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:34:02,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:34:02,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1699720853, now seen corresponding path program 2 times [2022-01-19 00:34:02,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:34:02,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473535459] [2022-01-19 00:34:02,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:34:02,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:34:02,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:34:03,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:34:03,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:34:03,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473535459] [2022-01-19 00:34:03,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473535459] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:34:03,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:34:03,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 00:34:03,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629091999] [2022-01-19 00:34:03,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:34:03,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 00:34:03,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:34:03,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 00:34:03,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-01-19 00:34:03,489 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 00:34:03,490 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 147 transitions, 619 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:34:03,490 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:34:03,490 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 00:34:03,490 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:34:13,260 INFO L129 PetriNetUnfolder]: 889/2794 cut-off events. [2022-01-19 00:34:13,260 INFO L130 PetriNetUnfolder]: For 15773/15773 co-relation queries the response was YES. [2022-01-19 00:34:13,281 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10511 conditions, 2794 events. 889/2794 cut-off events. For 15773/15773 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 19368 event pairs, 50 based on Foata normal form. 1/2737 useless extension candidates. Maximal degree in co-relation 10380. Up to 895 conditions per place. [2022-01-19 00:34:13,286 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 361 selfloop transitions, 20 changer transitions 160/612 dead transitions. [2022-01-19 00:34:13,286 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 612 transitions, 4872 flow [2022-01-19 00:34:13,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-01-19 00:34:13,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2022-01-19 00:34:13,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 7845 transitions. [2022-01-19 00:34:13,290 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5123432601880877 [2022-01-19 00:34:13,290 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 7845 transitions. [2022-01-19 00:34:13,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 7845 transitions. [2022-01-19 00:34:13,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:34:13,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 7845 transitions. [2022-01-19 00:34:13,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 89.14772727272727) internal successors, (7845), 88 states have internal predecessors, (7845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:34:13,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:34:13,302 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 174.0) internal successors, (15486), 89 states have internal predecessors, (15486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:34:13,302 INFO L186 Difference]: Start difference. First operand has 364 places, 147 transitions, 619 flow. Second operand 88 states and 7845 transitions. [2022-01-19 00:34:13,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 612 transitions, 4872 flow [2022-01-19 00:34:13,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 612 transitions, 3477 flow, removed 457 selfloop flow, removed 82 redundant places. [2022-01-19 00:34:13,325 INFO L242 Difference]: Finished difference. Result has 383 places, 160 transitions, 851 flow [2022-01-19 00:34:13,325 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=851, PETRI_PLACES=383, PETRI_TRANSITIONS=160} [2022-01-19 00:34:13,326 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 226 predicate places. [2022-01-19 00:34:13,326 INFO L470 AbstractCegarLoop]: Abstraction has has 383 places, 160 transitions, 851 flow [2022-01-19 00:34:13,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:34:13,326 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:34:13,326 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:34:13,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-01-19 00:34:13,326 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:34:13,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:34:13,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1095220343, now seen corresponding path program 3 times [2022-01-19 00:34:13,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:34:13,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238192381] [2022-01-19 00:34:13,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:34:13,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:34:13,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:34:13,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:34:13,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:34:13,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238192381] [2022-01-19 00:34:13,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238192381] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:34:13,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:34:13,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 00:34:13,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798689210] [2022-01-19 00:34:13,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:34:13,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 00:34:13,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:34:13,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 00:34:13,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=665, Unknown=0, NotChecked=0, Total=756 [2022-01-19 00:34:13,879 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 00:34:13,880 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 160 transitions, 851 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:34:13,880 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:34:13,880 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 00:34:13,880 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:34:28,608 INFO L129 PetriNetUnfolder]: 983/3147 cut-off events. [2022-01-19 00:34:28,608 INFO L130 PetriNetUnfolder]: For 32501/32501 co-relation queries the response was YES. [2022-01-19 00:34:28,644 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13813 conditions, 3147 events. 983/3147 cut-off events. For 32501/32501 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 22862 event pairs, 24 based on Foata normal form. 1/3114 useless extension candidates. Maximal degree in co-relation 13664. Up to 262 conditions per place. [2022-01-19 00:34:28,653 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 461 selfloop transitions, 25 changer transitions 158/715 dead transitions. [2022-01-19 00:34:28,653 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 715 transitions, 7301 flow [2022-01-19 00:34:28,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-19 00:34:28,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-01-19 00:34:28,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7508 transitions. [2022-01-19 00:34:28,657 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5136836343732896 [2022-01-19 00:34:28,657 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7508 transitions. [2022-01-19 00:34:28,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7508 transitions. [2022-01-19 00:34:28,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:34:28,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7508 transitions. [2022-01-19 00:34:28,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.38095238095238) internal successors, (7508), 84 states have internal predecessors, (7508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:34:28,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:34:28,671 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:34:28,671 INFO L186 Difference]: Start difference. First operand has 383 places, 160 transitions, 851 flow. Second operand 84 states and 7508 transitions. [2022-01-19 00:34:28,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 715 transitions, 7301 flow [2022-01-19 00:34:28,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 715 transitions, 6734 flow, removed 278 selfloop flow, removed 32 redundant places. [2022-01-19 00:34:28,753 INFO L242 Difference]: Finished difference. Result has 432 places, 166 transitions, 1058 flow [2022-01-19 00:34:28,754 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1058, PETRI_PLACES=432, PETRI_TRANSITIONS=166} [2022-01-19 00:34:28,754 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 275 predicate places. [2022-01-19 00:34:28,754 INFO L470 AbstractCegarLoop]: Abstraction has has 432 places, 166 transitions, 1058 flow [2022-01-19 00:34:28,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:34:28,754 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:34:28,755 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:34:28,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-01-19 00:34:28,755 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:34:28,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:34:28,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1934898097, now seen corresponding path program 4 times [2022-01-19 00:34:28,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:34:28,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856206140] [2022-01-19 00:34:28,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:34:28,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:34:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:34:29,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:34:29,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:34:29,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856206140] [2022-01-19 00:34:29,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856206140] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:34:29,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:34:29,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 00:34:29,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674958520] [2022-01-19 00:34:29,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:34:29,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 00:34:29,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:34:29,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 00:34:29,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2022-01-19 00:34:29,303 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 00:34:29,304 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 166 transitions, 1058 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:34:29,304 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:34:29,304 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 00:34:29,304 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:34:39,588 INFO L129 PetriNetUnfolder]: 1379/4285 cut-off events. [2022-01-19 00:34:39,589 INFO L130 PetriNetUnfolder]: For 50605/50605 co-relation queries the response was YES. [2022-01-19 00:34:39,637 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22066 conditions, 4285 events. 1379/4285 cut-off events. For 50605/50605 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 33928 event pairs, 191 based on Foata normal form. 1/4200 useless extension candidates. Maximal degree in co-relation 21878. Up to 895 conditions per place. [2022-01-19 00:34:39,648 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 412 selfloop transitions, 22 changer transitions 151/656 dead transitions. [2022-01-19 00:34:39,648 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 656 transitions, 7528 flow [2022-01-19 00:34:39,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-19 00:34:39,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-01-19 00:34:39,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7541 transitions. [2022-01-19 00:34:39,652 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5159414340448824 [2022-01-19 00:34:39,652 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7541 transitions. [2022-01-19 00:34:39,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7541 transitions. [2022-01-19 00:34:39,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:34:39,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7541 transitions. [2022-01-19 00:34:39,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.77380952380952) internal successors, (7541), 84 states have internal predecessors, (7541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:34:39,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:34:39,664 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:34:39,664 INFO L186 Difference]: Start difference. First operand has 432 places, 166 transitions, 1058 flow. Second operand 84 states and 7541 transitions. [2022-01-19 00:34:39,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 656 transitions, 7528 flow [2022-01-19 00:34:39,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 656 transitions, 6432 flow, removed 462 selfloop flow, removed 69 redundant places. [2022-01-19 00:34:39,798 INFO L242 Difference]: Finished difference. Result has 458 places, 177 transitions, 1295 flow [2022-01-19 00:34:39,798 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1295, PETRI_PLACES=458, PETRI_TRANSITIONS=177} [2022-01-19 00:34:39,799 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 301 predicate places. [2022-01-19 00:34:39,799 INFO L470 AbstractCegarLoop]: Abstraction has has 458 places, 177 transitions, 1295 flow [2022-01-19 00:34:39,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:34:39,799 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:34:39,799 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:34:39,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-01-19 00:34:39,800 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:34:39,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:34:39,800 INFO L85 PathProgramCache]: Analyzing trace with hash -461087959, now seen corresponding path program 5 times [2022-01-19 00:34:39,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:34:39,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270113726] [2022-01-19 00:34:39,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:34:39,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:34:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:34:40,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:34:40,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:34:40,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270113726] [2022-01-19 00:34:40,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270113726] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:34:40,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:34:40,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 00:34:40,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069056659] [2022-01-19 00:34:40,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:34:40,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 00:34:40,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:34:40,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 00:34:40,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-01-19 00:34:40,286 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 00:34:40,286 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 177 transitions, 1295 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:34:40,287 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:34:40,287 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 00:34:40,287 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:34:49,296 INFO L129 PetriNetUnfolder]: 1502/4877 cut-off events. [2022-01-19 00:34:49,296 INFO L130 PetriNetUnfolder]: For 102716/102720 co-relation queries the response was YES. [2022-01-19 00:34:49,353 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28769 conditions, 4877 events. 1502/4877 cut-off events. For 102716/102720 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 40500 event pairs, 108 based on Foata normal form. 3/4823 useless extension candidates. Maximal degree in co-relation 28565. Up to 513 conditions per place. [2022-01-19 00:34:49,367 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 513 selfloop transitions, 29 changer transitions 163/776 dead transitions. [2022-01-19 00:34:49,367 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 776 transitions, 11098 flow [2022-01-19 00:34:49,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-19 00:34:49,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-01-19 00:34:49,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7507 transitions. [2022-01-19 00:34:49,371 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5136152162014231 [2022-01-19 00:34:49,371 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7507 transitions. [2022-01-19 00:34:49,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7507 transitions. [2022-01-19 00:34:49,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:34:49,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7507 transitions. [2022-01-19 00:34:49,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.36904761904762) internal successors, (7507), 84 states have internal predecessors, (7507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:34:49,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:34:49,383 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:34:49,383 INFO L186 Difference]: Start difference. First operand has 458 places, 177 transitions, 1295 flow. Second operand 84 states and 7507 transitions. [2022-01-19 00:34:49,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 776 transitions, 11098 flow [2022-01-19 00:34:49,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 776 transitions, 10240 flow, removed 388 selfloop flow, removed 34 redundant places. [2022-01-19 00:34:49,639 INFO L242 Difference]: Finished difference. Result has 512 places, 184 transitions, 1594 flow [2022-01-19 00:34:49,639 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1594, PETRI_PLACES=512, PETRI_TRANSITIONS=184} [2022-01-19 00:34:49,640 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 355 predicate places. [2022-01-19 00:34:49,640 INFO L470 AbstractCegarLoop]: Abstraction has has 512 places, 184 transitions, 1594 flow [2022-01-19 00:34:49,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:34:49,640 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:34:49,640 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:34:49,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-01-19 00:34:49,640 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:34:49,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:34:49,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1159621057, now seen corresponding path program 6 times [2022-01-19 00:34:49,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:34:49,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809130638] [2022-01-19 00:34:49,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:34:49,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:34:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:34:50,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:34:50,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:34:50,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809130638] [2022-01-19 00:34:50,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809130638] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:34:50,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:34:50,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 00:34:50,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685476008] [2022-01-19 00:34:50,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:34:50,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 00:34:50,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:34:50,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 00:34:50,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-01-19 00:34:50,143 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 00:34:50,144 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 184 transitions, 1594 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:34:50,144 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:34:50,144 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 00:34:50,144 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:34:59,474 INFO L129 PetriNetUnfolder]: 1737/5528 cut-off events. [2022-01-19 00:34:59,474 INFO L130 PetriNetUnfolder]: For 164559/164571 co-relation queries the response was YES. [2022-01-19 00:34:59,553 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37995 conditions, 5528 events. 1737/5528 cut-off events. For 164559/164571 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 46898 event pairs, 531 based on Foata normal form. 3/5395 useless extension candidates. Maximal degree in co-relation 37749. Up to 1047 conditions per place. [2022-01-19 00:34:59,571 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 425 selfloop transitions, 24 changer transitions 156/676 dead transitions. [2022-01-19 00:34:59,571 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 530 places, 676 transitions, 11666 flow [2022-01-19 00:34:59,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-19 00:34:59,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-01-19 00:34:59,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7543 transitions. [2022-01-19 00:34:59,575 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5160782703886152 [2022-01-19 00:34:59,575 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7543 transitions. [2022-01-19 00:34:59,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7543 transitions. [2022-01-19 00:34:59,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:34:59,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7543 transitions. [2022-01-19 00:34:59,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.79761904761905) internal successors, (7543), 84 states have internal predecessors, (7543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:34:59,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:34:59,587 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:34:59,588 INFO L186 Difference]: Start difference. First operand has 512 places, 184 transitions, 1594 flow. Second operand 84 states and 7543 transitions. [2022-01-19 00:34:59,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 530 places, 676 transitions, 11666 flow [2022-01-19 00:35:00,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 676 transitions, 10266 flow, removed 613 selfloop flow, removed 66 redundant places. [2022-01-19 00:35:00,033 INFO L242 Difference]: Finished difference. Result has 542 places, 196 transitions, 1934 flow [2022-01-19 00:35:00,033 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1395, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=1934, PETRI_PLACES=542, PETRI_TRANSITIONS=196} [2022-01-19 00:35:00,034 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 385 predicate places. [2022-01-19 00:35:00,034 INFO L470 AbstractCegarLoop]: Abstraction has has 542 places, 196 transitions, 1934 flow [2022-01-19 00:35:00,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:35:00,034 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:35:00,034 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:35:00,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-01-19 00:35:00,035 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:35:00,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:35:00,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1277066965, now seen corresponding path program 7 times [2022-01-19 00:35:00,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:35:00,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306870060] [2022-01-19 00:35:00,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:35:00,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:35:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:35:00,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:35:00,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:35:00,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306870060] [2022-01-19 00:35:00,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306870060] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:35:00,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:35:00,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 00:35:00,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226667764] [2022-01-19 00:35:00,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:35:00,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 00:35:00,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:35:00,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 00:35:00,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-01-19 00:35:00,626 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 00:35:00,626 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 542 places, 196 transitions, 1934 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:35:00,627 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:35:00,627 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 00:35:00,627 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:35:28,776 INFO L129 PetriNetUnfolder]: 1877/6140 cut-off events. [2022-01-19 00:35:28,777 INFO L130 PetriNetUnfolder]: For 259135/259139 co-relation queries the response was YES. [2022-01-19 00:35:28,872 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46041 conditions, 6140 events. 1877/6140 cut-off events. For 259135/259139 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 54339 event pairs, 235 based on Foata normal form. 3/6056 useless extension candidates. Maximal degree in co-relation 45775. Up to 936 conditions per place. [2022-01-19 00:35:28,893 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 554 selfloop transitions, 31 changer transitions 168/824 dead transitions. [2022-01-19 00:35:28,893 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 824 transitions, 15362 flow [2022-01-19 00:35:28,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-19 00:35:28,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-01-19 00:35:28,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7505 transitions. [2022-01-19 00:35:28,897 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5134783798576902 [2022-01-19 00:35:28,897 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7505 transitions. [2022-01-19 00:35:28,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7505 transitions. [2022-01-19 00:35:28,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:35:28,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7505 transitions. [2022-01-19 00:35:28,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.3452380952381) internal successors, (7505), 84 states have internal predecessors, (7505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:35:28,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:35:28,909 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:35:28,909 INFO L186 Difference]: Start difference. First operand has 542 places, 196 transitions, 1934 flow. Second operand 84 states and 7505 transitions. [2022-01-19 00:35:28,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 824 transitions, 15362 flow [2022-01-19 00:35:29,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 490 places, 824 transitions, 12581 flow, removed 1367 selfloop flow, removed 70 redundant places. [2022-01-19 00:35:29,551 INFO L242 Difference]: Finished difference. Result has 562 places, 204 transitions, 2147 flow [2022-01-19 00:35:29,551 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1675, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=2147, PETRI_PLACES=562, PETRI_TRANSITIONS=204} [2022-01-19 00:35:29,551 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 405 predicate places. [2022-01-19 00:35:29,551 INFO L470 AbstractCegarLoop]: Abstraction has has 562 places, 204 transitions, 2147 flow [2022-01-19 00:35:29,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:35:29,552 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:35:29,552 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:35:29,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-01-19 00:35:29,552 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:35:29,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:35:29,552 INFO L85 PathProgramCache]: Analyzing trace with hash 993198483, now seen corresponding path program 8 times [2022-01-19 00:35:29,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:35:29,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266522754] [2022-01-19 00:35:29,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:35:29,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:35:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:35:30,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:35:30,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:35:30,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266522754] [2022-01-19 00:35:30,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266522754] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:35:30,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:35:30,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 00:35:30,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852801074] [2022-01-19 00:35:30,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:35:30,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 00:35:30,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:35:30,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 00:35:30,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2022-01-19 00:35:30,082 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 00:35:30,083 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 204 transitions, 2147 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:35:30,083 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:35:30,083 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 00:35:30,083 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:35:42,426 INFO L129 PetriNetUnfolder]: 2166/6767 cut-off events. [2022-01-19 00:35:42,427 INFO L130 PetriNetUnfolder]: For 268818/268830 co-relation queries the response was YES. [2022-01-19 00:35:42,580 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52100 conditions, 6767 events. 2166/6767 cut-off events. For 268818/268830 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 59677 event pairs, 1097 based on Foata normal form. 3/6617 useless extension candidates. Maximal degree in co-relation 51827. Up to 1557 conditions per place. [2022-01-19 00:35:42,614 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 443 selfloop transitions, 26 changer transitions 146/686 dead transitions. [2022-01-19 00:35:42,614 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 686 transitions, 13269 flow [2022-01-19 00:35:42,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-19 00:35:42,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-01-19 00:35:42,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7545 transitions. [2022-01-19 00:35:42,618 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5162151067323482 [2022-01-19 00:35:42,618 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7545 transitions. [2022-01-19 00:35:42,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7545 transitions. [2022-01-19 00:35:42,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:35:42,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7545 transitions. [2022-01-19 00:35:42,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.82142857142857) internal successors, (7545), 84 states have internal predecessors, (7545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:35:42,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:35:42,631 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:35:42,631 INFO L186 Difference]: Start difference. First operand has 562 places, 204 transitions, 2147 flow. Second operand 84 states and 7545 transitions. [2022-01-19 00:35:42,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 686 transitions, 13269 flow [2022-01-19 00:35:43,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 686 transitions, 11459 flow, removed 818 selfloop flow, removed 66 redundant places. [2022-01-19 00:35:43,591 INFO L242 Difference]: Finished difference. Result has 593 places, 217 transitions, 2537 flow [2022-01-19 00:35:43,591 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=1913, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=2537, PETRI_PLACES=593, PETRI_TRANSITIONS=217} [2022-01-19 00:35:43,592 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 436 predicate places. [2022-01-19 00:35:43,592 INFO L470 AbstractCegarLoop]: Abstraction has has 593 places, 217 transitions, 2537 flow [2022-01-19 00:35:43,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:35:43,592 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:35:43,592 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:35:43,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-01-19 00:35:43,592 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:35:43,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:35:43,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1591563263, now seen corresponding path program 9 times [2022-01-19 00:35:43,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:35:43,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700684697] [2022-01-19 00:35:43,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:35:43,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:35:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:35:43,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:35:43,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:35:43,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700684697] [2022-01-19 00:35:43,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700684697] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:35:43,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:35:43,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 00:35:43,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001819111] [2022-01-19 00:35:43,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:35:43,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 00:35:43,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:35:43,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 00:35:43,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2022-01-19 00:35:43,998 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 174 [2022-01-19 00:35:43,998 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 217 transitions, 2537 flow. Second operand has 28 states, 28 states have (on average 97.14285714285714) internal successors, (2720), 28 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:35:43,999 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:35:43,999 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 174 [2022-01-19 00:35:43,999 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:35:50,751 INFO L129 PetriNetUnfolder]: 2220/7341 cut-off events. [2022-01-19 00:35:50,752 INFO L130 PetriNetUnfolder]: For 380177/380185 co-relation queries the response was YES. [2022-01-19 00:35:50,877 INFO L84 FinitePrefix]: Finished finitePrefix Result has 60699 conditions, 7341 events. 2220/7341 cut-off events. For 380177/380185 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 68141 event pairs, 224 based on Foata normal form. 4/7224 useless extension candidates. Maximal degree in co-relation 60405. Up to 1683 conditions per place. [2022-01-19 00:35:50,907 INFO L132 encePairwiseOnDemand]: 139/174 looper letters, 580 selfloop transitions, 66 changer transitions 106/837 dead transitions. [2022-01-19 00:35:50,907 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 837 transitions, 19505 flow [2022-01-19 00:35:50,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-19 00:35:50,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-01-19 00:35:50,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 6063 transitions. [2022-01-19 00:35:50,910 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5807471264367816 [2022-01-19 00:35:50,910 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 6063 transitions. [2022-01-19 00:35:50,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 6063 transitions. [2022-01-19 00:35:50,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:35:50,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 6063 transitions. [2022-01-19 00:35:50,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 101.05) internal successors, (6063), 60 states have internal predecessors, (6063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:35:50,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 174.0) internal successors, (10614), 61 states have internal predecessors, (10614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:35:50,919 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 174.0) internal successors, (10614), 61 states have internal predecessors, (10614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:35:50,919 INFO L186 Difference]: Start difference. First operand has 593 places, 217 transitions, 2537 flow. Second operand 60 states and 6063 transitions. [2022-01-19 00:35:50,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 837 transitions, 19505 flow [2022-01-19 00:35:51,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 519 places, 837 transitions, 16266 flow, removed 1614 selfloop flow, removed 68 redundant places. [2022-01-19 00:35:51,859 INFO L242 Difference]: Finished difference. Result has 572 places, 268 transitions, 3797 flow [2022-01-19 00:35:51,859 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=2242, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=3797, PETRI_PLACES=572, PETRI_TRANSITIONS=268} [2022-01-19 00:35:51,859 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 415 predicate places. [2022-01-19 00:35:51,859 INFO L470 AbstractCegarLoop]: Abstraction has has 572 places, 268 transitions, 3797 flow [2022-01-19 00:35:51,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 97.14285714285714) internal successors, (2720), 28 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:35:51,860 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:35:51,860 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:35:51,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-01-19 00:35:51,860 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:35:51,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:35:51,860 INFO L85 PathProgramCache]: Analyzing trace with hash -726751155, now seen corresponding path program 10 times [2022-01-19 00:35:51,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:35:51,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422664376] [2022-01-19 00:35:51,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:35:51,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:35:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:35:52,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:35:52,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:35:52,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422664376] [2022-01-19 00:35:52,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422664376] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:35:52,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:35:52,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 00:35:52,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189748321] [2022-01-19 00:35:52,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:35:52,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 00:35:52,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:35:52,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 00:35:52,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2022-01-19 00:35:52,400 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 00:35:52,401 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 268 transitions, 3797 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:35:52,401 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:35:52,401 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 00:35:52,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:05,088 INFO L129 PetriNetUnfolder]: 2333/7262 cut-off events. [2022-01-19 00:36:05,088 INFO L130 PetriNetUnfolder]: For 330186/330198 co-relation queries the response was YES. [2022-01-19 00:36:05,210 INFO L84 FinitePrefix]: Finished finitePrefix Result has 59264 conditions, 7262 events. 2333/7262 cut-off events. For 330186/330198 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 65352 event pairs, 867 based on Foata normal form. 3/7075 useless extension candidates. Maximal degree in co-relation 58982. Up to 2967 conditions per place. [2022-01-19 00:36:05,243 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 641 selfloop transitions, 45 changer transitions 163/920 dead transitions. [2022-01-19 00:36:05,243 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 920 transitions, 20525 flow [2022-01-19 00:36:05,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-19 00:36:05,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-01-19 00:36:05,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7490 transitions. [2022-01-19 00:36:05,247 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5124521072796935 [2022-01-19 00:36:05,247 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7490 transitions. [2022-01-19 00:36:05,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7490 transitions. [2022-01-19 00:36:05,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:05,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7490 transitions. [2022-01-19 00:36:05,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.16666666666667) internal successors, (7490), 84 states have internal predecessors, (7490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:05,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:05,259 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:05,259 INFO L186 Difference]: Start difference. First operand has 572 places, 268 transitions, 3797 flow. Second operand 84 states and 7490 transitions. [2022-01-19 00:36:05,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 920 transitions, 20525 flow [2022-01-19 00:36:06,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 920 transitions, 17801 flow, removed 1240 selfloop flow, removed 47 redundant places. [2022-01-19 00:36:06,318 INFO L242 Difference]: Finished difference. Result has 648 places, 281 transitions, 3803 flow [2022-01-19 00:36:06,319 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3041, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=3803, PETRI_PLACES=648, PETRI_TRANSITIONS=281} [2022-01-19 00:36:06,319 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 491 predicate places. [2022-01-19 00:36:06,319 INFO L470 AbstractCegarLoop]: Abstraction has has 648 places, 281 transitions, 3803 flow [2022-01-19 00:36:06,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:06,319 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:06,319 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:06,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-01-19 00:36:06,319 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:06,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:06,320 INFO L85 PathProgramCache]: Analyzing trace with hash 599418103, now seen corresponding path program 11 times [2022-01-19 00:36:06,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:06,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908508239] [2022-01-19 00:36:06,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:06,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:06,851 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 00:36:06,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:06,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908508239] [2022-01-19 00:36:06,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908508239] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:06,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:06,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 00:36:06,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544487392] [2022-01-19 00:36:06,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:06,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 00:36:06,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:06,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 00:36:06,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=685, Unknown=0, NotChecked=0, Total=756 [2022-01-19 00:36:06,853 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 00:36:06,854 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 648 places, 281 transitions, 3803 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:06,854 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:06,854 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 00:36:06,854 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:19,818 INFO L129 PetriNetUnfolder]: 2540/8070 cut-off events. [2022-01-19 00:36:19,818 INFO L130 PetriNetUnfolder]: For 407126/407134 co-relation queries the response was YES. [2022-01-19 00:36:20,029 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68300 conditions, 8070 events. 2540/8070 cut-off events. For 407126/407134 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 75321 event pairs, 581 based on Foata normal form. 1/7948 useless extension candidates. Maximal degree in co-relation 67980. Up to 2368 conditions per place. [2022-01-19 00:36:20,061 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 640 selfloop transitions, 28 changer transitions 178/917 dead transitions. [2022-01-19 00:36:20,061 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 666 places, 917 transitions, 19278 flow [2022-01-19 00:36:20,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-19 00:36:20,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-01-19 00:36:20,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7516 transitions. [2022-01-19 00:36:20,065 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5142309797482211 [2022-01-19 00:36:20,065 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7516 transitions. [2022-01-19 00:36:20,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7516 transitions. [2022-01-19 00:36:20,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:20,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7516 transitions. [2022-01-19 00:36:20,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.47619047619048) internal successors, (7516), 84 states have internal predecessors, (7516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:20,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:20,077 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:20,077 INFO L186 Difference]: Start difference. First operand has 648 places, 281 transitions, 3803 flow. Second operand 84 states and 7516 transitions. [2022-01-19 00:36:20,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 666 places, 917 transitions, 19278 flow [2022-01-19 00:36:21,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 917 transitions, 16734 flow, removed 1263 selfloop flow, removed 69 redundant places. [2022-01-19 00:36:21,724 INFO L242 Difference]: Finished difference. Result has 673 places, 291 transitions, 4130 flow [2022-01-19 00:36:21,724 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3495, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=4130, PETRI_PLACES=673, PETRI_TRANSITIONS=291} [2022-01-19 00:36:21,724 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 516 predicate places. [2022-01-19 00:36:21,725 INFO L470 AbstractCegarLoop]: Abstraction has has 673 places, 291 transitions, 4130 flow [2022-01-19 00:36:21,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:21,725 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:21,725 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:21,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-01-19 00:36:21,725 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:21,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:21,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1569916807, now seen corresponding path program 12 times [2022-01-19 00:36:21,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:21,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824058203] [2022-01-19 00:36:21,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:21,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:22,219 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 00:36:22,219 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:22,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824058203] [2022-01-19 00:36:22,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824058203] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:22,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:22,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 00:36:22,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245000055] [2022-01-19 00:36:22,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:22,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 00:36:22,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:22,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 00:36:22,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2022-01-19 00:36:22,221 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 00:36:22,222 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 673 places, 291 transitions, 4130 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:22,222 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:22,222 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 00:36:22,222 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:34,945 INFO L129 PetriNetUnfolder]: 2594/8185 cut-off events. [2022-01-19 00:36:34,945 INFO L130 PetriNetUnfolder]: For 468859/468899 co-relation queries the response was YES. [2022-01-19 00:36:35,104 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71691 conditions, 8185 events. 2594/8185 cut-off events. For 468859/468899 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 76305 event pairs, 901 based on Foata normal form. 3/7972 useless extension candidates. Maximal degree in co-relation 71360. Up to 2967 conditions per place. [2022-01-19 00:36:35,136 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 635 selfloop transitions, 50 changer transitions 149/905 dead transitions. [2022-01-19 00:36:35,136 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 687 places, 905 transitions, 21737 flow [2022-01-19 00:36:35,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-19 00:36:35,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-01-19 00:36:35,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7167 transitions. [2022-01-19 00:36:35,140 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5148706896551725 [2022-01-19 00:36:35,140 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7167 transitions. [2022-01-19 00:36:35,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7167 transitions. [2022-01-19 00:36:35,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:35,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7167 transitions. [2022-01-19 00:36:35,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.5875) internal successors, (7167), 80 states have internal predecessors, (7167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:35,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:35,151 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:35,151 INFO L186 Difference]: Start difference. First operand has 673 places, 291 transitions, 4130 flow. Second operand 80 states and 7167 transitions. [2022-01-19 00:36:35,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 687 places, 905 transitions, 21737 flow [2022-01-19 00:36:36,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 627 places, 905 transitions, 18947 flow, removed 1350 selfloop flow, removed 60 redundant places. [2022-01-19 00:36:36,744 INFO L242 Difference]: Finished difference. Result has 690 places, 297 transitions, 4313 flow [2022-01-19 00:36:36,744 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=3853, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=4313, PETRI_PLACES=690, PETRI_TRANSITIONS=297} [2022-01-19 00:36:36,744 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 533 predicate places. [2022-01-19 00:36:36,744 INFO L470 AbstractCegarLoop]: Abstraction has has 690 places, 297 transitions, 4313 flow [2022-01-19 00:36:36,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:36,745 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:36,745 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:36,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-01-19 00:36:36,745 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:36,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:36,745 INFO L85 PathProgramCache]: Analyzing trace with hash -672231915, now seen corresponding path program 13 times [2022-01-19 00:36:36,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:36,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220083630] [2022-01-19 00:36:36,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:36,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:36,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:37,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:37,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:37,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220083630] [2022-01-19 00:36:37,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220083630] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:37,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:37,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 00:36:37,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945098208] [2022-01-19 00:36:37,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:37,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 00:36:37,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:37,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 00:36:37,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-01-19 00:36:37,281 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 00:36:37,282 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 690 places, 297 transitions, 4313 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:37,282 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:37,282 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 00:36:37,282 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:36:51,579 INFO L129 PetriNetUnfolder]: 2840/8931 cut-off events. [2022-01-19 00:36:51,579 INFO L130 PetriNetUnfolder]: For 490454/490466 co-relation queries the response was YES. [2022-01-19 00:36:51,835 INFO L84 FinitePrefix]: Finished finitePrefix Result has 79388 conditions, 8931 events. 2840/8931 cut-off events. For 490454/490466 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 85195 event pairs, 820 based on Foata normal form. 1/8790 useless extension candidates. Maximal degree in co-relation 79047. Up to 3114 conditions per place. [2022-01-19 00:36:51,871 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 598 selfloop transitions, 30 changer transitions 183/882 dead transitions. [2022-01-19 00:36:51,871 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 713 places, 882 transitions, 18783 flow [2022-01-19 00:36:51,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-19 00:36:51,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-01-19 00:36:51,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 7515 transitions. [2022-01-19 00:36:51,875 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5141625615763546 [2022-01-19 00:36:51,875 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 7515 transitions. [2022-01-19 00:36:51,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 7515 transitions. [2022-01-19 00:36:51,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:36:51,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 7515 transitions. [2022-01-19 00:36:51,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 89.46428571428571) internal successors, (7515), 84 states have internal predecessors, (7515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:51,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:51,890 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 174.0) internal successors, (14790), 85 states have internal predecessors, (14790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:51,890 INFO L186 Difference]: Start difference. First operand has 690 places, 297 transitions, 4313 flow. Second operand 84 states and 7515 transitions. [2022-01-19 00:36:51,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 713 places, 882 transitions, 18783 flow [2022-01-19 00:36:53,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 648 places, 882 transitions, 17724 flow, removed 435 selfloop flow, removed 65 redundant places. [2022-01-19 00:36:53,672 INFO L242 Difference]: Finished difference. Result has 725 places, 308 transitions, 4799 flow [2022-01-19 00:36:53,672 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=4090, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=4799, PETRI_PLACES=725, PETRI_TRANSITIONS=308} [2022-01-19 00:36:53,673 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 568 predicate places. [2022-01-19 00:36:53,673 INFO L470 AbstractCegarLoop]: Abstraction has has 725 places, 308 transitions, 4799 flow [2022-01-19 00:36:53,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:53,673 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:36:53,673 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:36:53,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-01-19 00:36:53,673 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:36:53,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:36:53,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1048200985, now seen corresponding path program 14 times [2022-01-19 00:36:53,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:36:53,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017713059] [2022-01-19 00:36:53,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:36:53,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:36:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:36:54,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:36:54,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:36:54,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017713059] [2022-01-19 00:36:54,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017713059] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:36:54,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:36:54,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 00:36:54,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740074339] [2022-01-19 00:36:54,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:36:54,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 00:36:54,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:36:54,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 00:36:54,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2022-01-19 00:36:54,219 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 00:36:54,220 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 725 places, 308 transitions, 4799 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:36:54,220 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:36:54,220 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 00:36:54,220 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:07,991 INFO L129 PetriNetUnfolder]: 2909/9251 cut-off events. [2022-01-19 00:37:07,992 INFO L130 PetriNetUnfolder]: For 629778/629816 co-relation queries the response was YES. [2022-01-19 00:37:08,198 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86949 conditions, 9251 events. 2909/9251 cut-off events. For 629778/629816 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 89136 event pairs, 965 based on Foata normal form. 5/9006 useless extension candidates. Maximal degree in co-relation 86587. Up to 2967 conditions per place. [2022-01-19 00:37:08,238 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 681 selfloop transitions, 50 changer transitions 154/956 dead transitions. [2022-01-19 00:37:08,238 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 739 places, 956 transitions, 24722 flow [2022-01-19 00:37:08,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-19 00:37:08,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-01-19 00:37:08,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7168 transitions. [2022-01-19 00:37:08,242 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5149425287356322 [2022-01-19 00:37:08,242 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7168 transitions. [2022-01-19 00:37:08,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7168 transitions. [2022-01-19 00:37:08,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:08,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7168 transitions. [2022-01-19 00:37:08,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.6) internal successors, (7168), 80 states have internal predecessors, (7168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:08,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:08,253 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:08,253 INFO L186 Difference]: Start difference. First operand has 725 places, 308 transitions, 4799 flow. Second operand 80 states and 7168 transitions. [2022-01-19 00:37:08,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 739 places, 956 transitions, 24722 flow [2022-01-19 00:37:10,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 668 places, 956 transitions, 21349 flow, removed 1659 selfloop flow, removed 71 redundant places. [2022-01-19 00:37:10,762 INFO L242 Difference]: Finished difference. Result has 733 places, 315 transitions, 4973 flow [2022-01-19 00:37:10,762 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=4448, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=4973, PETRI_PLACES=733, PETRI_TRANSITIONS=315} [2022-01-19 00:37:10,762 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 576 predicate places. [2022-01-19 00:37:10,762 INFO L470 AbstractCegarLoop]: Abstraction has has 733 places, 315 transitions, 4973 flow [2022-01-19 00:37:10,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:10,763 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:10,763 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:10,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-01-19 00:37:10,763 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:10,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:10,763 INFO L85 PathProgramCache]: Analyzing trace with hash -2056583797, now seen corresponding path program 15 times [2022-01-19 00:37:10,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:10,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580502313] [2022-01-19 00:37:10,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:10,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:11,285 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 00:37:11,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:11,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580502313] [2022-01-19 00:37:11,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580502313] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:11,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:11,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 00:37:11,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94883135] [2022-01-19 00:37:11,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:11,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 00:37:11,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:11,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 00:37:11,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-01-19 00:37:11,287 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 00:37:11,288 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 733 places, 315 transitions, 4973 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:11,288 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:11,288 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 00:37:11,288 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:24,727 INFO L129 PetriNetUnfolder]: 2996/9419 cut-off events. [2022-01-19 00:37:24,727 INFO L130 PetriNetUnfolder]: For 556971/557013 co-relation queries the response was YES. [2022-01-19 00:37:24,935 INFO L84 FinitePrefix]: Finished finitePrefix Result has 87061 conditions, 9419 events. 2996/9419 cut-off events. For 556971/557013 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 90900 event pairs, 900 based on Foata normal form. 5/9278 useless extension candidates. Maximal degree in co-relation 86699. Up to 3317 conditions per place. [2022-01-19 00:37:24,974 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 628 selfloop transitions, 36 changer transitions 168/903 dead transitions. [2022-01-19 00:37:24,974 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 752 places, 903 transitions, 19351 flow [2022-01-19 00:37:24,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-19 00:37:24,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-01-19 00:37:24,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7191 transitions. [2022-01-19 00:37:24,978 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5165948275862069 [2022-01-19 00:37:24,978 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7191 transitions. [2022-01-19 00:37:24,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7191 transitions. [2022-01-19 00:37:24,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:24,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7191 transitions. [2022-01-19 00:37:24,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.8875) internal successors, (7191), 80 states have internal predecessors, (7191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:24,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:24,990 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:24,990 INFO L186 Difference]: Start difference. First operand has 733 places, 315 transitions, 4973 flow. Second operand 80 states and 7191 transitions. [2022-01-19 00:37:24,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 752 places, 903 transitions, 19351 flow [2022-01-19 00:37:27,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 686 places, 903 transitions, 18426 flow, removed 374 selfloop flow, removed 66 redundant places. [2022-01-19 00:37:27,280 INFO L242 Difference]: Finished difference. Result has 749 places, 321 transitions, 5159 flow [2022-01-19 00:37:27,281 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=4723, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=5159, PETRI_PLACES=749, PETRI_TRANSITIONS=321} [2022-01-19 00:37:27,281 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 592 predicate places. [2022-01-19 00:37:27,281 INFO L470 AbstractCegarLoop]: Abstraction has has 749 places, 321 transitions, 5159 flow [2022-01-19 00:37:27,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:27,281 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:27,281 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:27,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-01-19 00:37:27,281 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:27,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:27,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1744354553, now seen corresponding path program 16 times [2022-01-19 00:37:27,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:27,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310748298] [2022-01-19 00:37:27,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:27,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:27,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:27,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:27,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310748298] [2022-01-19 00:37:27,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310748298] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:27,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:27,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 00:37:27,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457934912] [2022-01-19 00:37:27,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:27,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 00:37:27,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:27,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 00:37:27,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2022-01-19 00:37:27,801 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 00:37:27,802 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 749 places, 321 transitions, 5159 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:27,802 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:27,802 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 00:37:27,802 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:37:46,016 INFO L129 PetriNetUnfolder]: 3085/9841 cut-off events. [2022-01-19 00:37:46,016 INFO L130 PetriNetUnfolder]: For 519632/519685 co-relation queries the response was YES. [2022-01-19 00:37:46,277 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88308 conditions, 9841 events. 3085/9841 cut-off events. For 519632/519685 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 95973 event pairs, 1070 based on Foata normal form. 3/9573 useless extension candidates. Maximal degree in co-relation 87940. Up to 2967 conditions per place. [2022-01-19 00:37:46,323 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 674 selfloop transitions, 49 changer transitions 159/953 dead transitions. [2022-01-19 00:37:46,323 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 768 places, 953 transitions, 22913 flow [2022-01-19 00:37:46,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-19 00:37:46,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-01-19 00:37:46,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7168 transitions. [2022-01-19 00:37:46,327 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5149425287356322 [2022-01-19 00:37:46,327 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7168 transitions. [2022-01-19 00:37:46,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7168 transitions. [2022-01-19 00:37:46,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:37:46,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7168 transitions. [2022-01-19 00:37:46,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.6) internal successors, (7168), 80 states have internal predecessors, (7168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:46,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:46,339 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:46,339 INFO L186 Difference]: Start difference. First operand has 749 places, 321 transitions, 5159 flow. Second operand 80 states and 7168 transitions. [2022-01-19 00:37:46,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 768 places, 953 transitions, 22913 flow [2022-01-19 00:37:48,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 703 places, 953 transitions, 22067 flow, removed 370 selfloop flow, removed 65 redundant places. [2022-01-19 00:37:48,707 INFO L242 Difference]: Finished difference. Result has 770 places, 329 transitions, 5542 flow [2022-01-19 00:37:48,707 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=4949, PETRI_DIFFERENCE_MINUEND_PLACES=624, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=5542, PETRI_PLACES=770, PETRI_TRANSITIONS=329} [2022-01-19 00:37:48,707 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 613 predicate places. [2022-01-19 00:37:48,707 INFO L470 AbstractCegarLoop]: Abstraction has has 770 places, 329 transitions, 5542 flow [2022-01-19 00:37:48,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:48,708 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:37:48,708 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:37:48,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-01-19 00:37:48,708 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:37:48,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:37:48,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1133985109, now seen corresponding path program 17 times [2022-01-19 00:37:48,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:37:48,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428306609] [2022-01-19 00:37:48,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:37:48,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:37:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:37:49,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:37:49,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:37:49,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428306609] [2022-01-19 00:37:49,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428306609] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:37:49,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:37:49,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 00:37:49,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747918564] [2022-01-19 00:37:49,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:37:49,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 00:37:49,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:37:49,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 00:37:49,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=688, Unknown=0, NotChecked=0, Total=756 [2022-01-19 00:37:49,262 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 00:37:49,262 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 770 places, 329 transitions, 5542 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:37:49,263 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:37:49,263 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 00:37:49,263 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:03,721 INFO L129 PetriNetUnfolder]: 3186/10082 cut-off events. [2022-01-19 00:38:03,721 INFO L130 PetriNetUnfolder]: For 655258/655313 co-relation queries the response was YES. [2022-01-19 00:38:03,989 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97419 conditions, 10082 events. 3186/10082 cut-off events. For 655258/655313 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 99052 event pairs, 997 based on Foata normal form. 5/9921 useless extension candidates. Maximal degree in co-relation 97040. Up to 3550 conditions per place. [2022-01-19 00:38:04,036 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 638 selfloop transitions, 40 changer transitions 173/922 dead transitions. [2022-01-19 00:38:04,037 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 789 places, 922 transitions, 21181 flow [2022-01-19 00:38:04,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-19 00:38:04,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-01-19 00:38:04,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7192 transitions. [2022-01-19 00:38:04,041 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2022-01-19 00:38:04,041 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7192 transitions. [2022-01-19 00:38:04,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7192 transitions. [2022-01-19 00:38:04,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:04,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7192 transitions. [2022-01-19 00:38:04,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.9) internal successors, (7192), 80 states have internal predecessors, (7192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:04,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:04,053 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:04,053 INFO L186 Difference]: Start difference. First operand has 770 places, 329 transitions, 5542 flow. Second operand 80 states and 7192 transitions. [2022-01-19 00:38:04,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 789 places, 922 transitions, 21181 flow [2022-01-19 00:38:06,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 722 places, 922 transitions, 19800 flow, removed 601 selfloop flow, removed 67 redundant places. [2022-01-19 00:38:06,880 INFO L242 Difference]: Finished difference. Result has 787 places, 336 transitions, 5768 flow [2022-01-19 00:38:06,881 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=5261, PETRI_DIFFERENCE_MINUEND_PLACES=643, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=5768, PETRI_PLACES=787, PETRI_TRANSITIONS=336} [2022-01-19 00:38:06,881 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 630 predicate places. [2022-01-19 00:38:06,881 INFO L470 AbstractCegarLoop]: Abstraction has has 787 places, 336 transitions, 5768 flow [2022-01-19 00:38:06,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:06,881 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:06,881 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:06,881 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-01-19 00:38:06,882 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:06,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:06,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1837188737, now seen corresponding path program 18 times [2022-01-19 00:38:06,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:06,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106746808] [2022-01-19 00:38:06,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:06,882 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:07,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:07,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:07,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106746808] [2022-01-19 00:38:07,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106746808] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:07,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:07,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 00:38:07,377 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951604373] [2022-01-19 00:38:07,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:07,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 00:38:07,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:07,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 00:38:07,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2022-01-19 00:38:07,379 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 00:38:07,379 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 787 places, 336 transitions, 5768 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:07,379 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:07,380 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 00:38:07,380 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:22,588 INFO L129 PetriNetUnfolder]: 3305/10521 cut-off events. [2022-01-19 00:38:22,589 INFO L130 PetriNetUnfolder]: For 610899/610962 co-relation queries the response was YES. [2022-01-19 00:38:22,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98766 conditions, 10521 events. 3305/10521 cut-off events. For 610899/610962 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 104391 event pairs, 1172 based on Foata normal form. 5/10229 useless extension candidates. Maximal degree in co-relation 98380. Up to 2967 conditions per place. [2022-01-19 00:38:22,888 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 665 selfloop transitions, 46 changer transitions 164/946 dead transitions. [2022-01-19 00:38:22,888 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 806 places, 946 transitions, 23548 flow [2022-01-19 00:38:22,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-19 00:38:22,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-01-19 00:38:22,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7169 transitions. [2022-01-19 00:38:22,891 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.515014367816092 [2022-01-19 00:38:22,891 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7169 transitions. [2022-01-19 00:38:22,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7169 transitions. [2022-01-19 00:38:22,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:22,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7169 transitions. [2022-01-19 00:38:22,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.6125) internal successors, (7169), 80 states have internal predecessors, (7169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:22,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:22,902 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:22,903 INFO L186 Difference]: Start difference. First operand has 787 places, 336 transitions, 5768 flow. Second operand 80 states and 7169 transitions. [2022-01-19 00:38:22,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 806 places, 946 transitions, 23548 flow [2022-01-19 00:38:25,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 740 places, 946 transitions, 22584 flow, removed 429 selfloop flow, removed 66 redundant places. [2022-01-19 00:38:25,977 INFO L242 Difference]: Finished difference. Result has 809 places, 345 transitions, 6194 flow [2022-01-19 00:38:25,977 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=5533, PETRI_DIFFERENCE_MINUEND_PLACES=661, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=6194, PETRI_PLACES=809, PETRI_TRANSITIONS=345} [2022-01-19 00:38:25,977 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 652 predicate places. [2022-01-19 00:38:25,978 INFO L470 AbstractCegarLoop]: Abstraction has has 809 places, 345 transitions, 6194 flow [2022-01-19 00:38:25,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:25,978 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:25,978 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:25,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-01-19 00:38:25,978 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:25,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:25,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1421973431, now seen corresponding path program 19 times [2022-01-19 00:38:25,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:25,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234132372] [2022-01-19 00:38:25,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:25,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:26,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:26,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:26,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234132372] [2022-01-19 00:38:26,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234132372] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:26,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:26,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 00:38:26,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445672776] [2022-01-19 00:38:26,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:26,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 00:38:26,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:26,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 00:38:26,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2022-01-19 00:38:26,523 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 00:38:26,524 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 809 places, 345 transitions, 6194 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:26,524 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:26,524 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 00:38:26,524 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:38:41,379 INFO L129 PetriNetUnfolder]: 3420/10873 cut-off events. [2022-01-19 00:38:41,379 INFO L130 PetriNetUnfolder]: For 780204/780272 co-relation queries the response was YES. [2022-01-19 00:38:41,668 INFO L84 FinitePrefix]: Finished finitePrefix Result has 109636 conditions, 10873 events. 3420/10873 cut-off events. For 780204/780272 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 108635 event pairs, 1148 based on Foata normal form. 5/10680 useless extension candidates. Maximal degree in co-relation 109238. Up to 3843 conditions per place. [2022-01-19 00:38:41,716 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 653 selfloop transitions, 42 changer transitions 178/944 dead transitions. [2022-01-19 00:38:41,717 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 828 places, 944 transitions, 23145 flow [2022-01-19 00:38:41,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-19 00:38:41,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-01-19 00:38:41,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7192 transitions. [2022-01-19 00:38:41,720 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5166666666666667 [2022-01-19 00:38:41,720 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7192 transitions. [2022-01-19 00:38:41,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7192 transitions. [2022-01-19 00:38:41,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:38:41,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7192 transitions. [2022-01-19 00:38:41,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.9) internal successors, (7192), 80 states have internal predecessors, (7192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:41,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:41,732 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:41,732 INFO L186 Difference]: Start difference. First operand has 809 places, 345 transitions, 6194 flow. Second operand 80 states and 7192 transitions. [2022-01-19 00:38:41,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 828 places, 944 transitions, 23145 flow [2022-01-19 00:38:45,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 760 places, 944 transitions, 21300 flow, removed 832 selfloop flow, removed 68 redundant places. [2022-01-19 00:38:45,761 INFO L242 Difference]: Finished difference. Result has 827 places, 353 transitions, 6466 flow [2022-01-19 00:38:45,761 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=5878, PETRI_DIFFERENCE_MINUEND_PLACES=681, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=6466, PETRI_PLACES=827, PETRI_TRANSITIONS=353} [2022-01-19 00:38:45,761 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 670 predicate places. [2022-01-19 00:38:45,761 INFO L470 AbstractCegarLoop]: Abstraction has has 827 places, 353 transitions, 6466 flow [2022-01-19 00:38:45,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:45,762 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:38:45,762 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:38:45,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-01-19 00:38:45,762 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:38:45,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:38:45,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1574213307, now seen corresponding path program 20 times [2022-01-19 00:38:45,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:38:45,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981650172] [2022-01-19 00:38:45,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:38:45,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:38:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:38:46,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:38:46,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:38:46,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981650172] [2022-01-19 00:38:46,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981650172] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:38:46,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:38:46,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 00:38:46,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287510090] [2022-01-19 00:38:46,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:38:46,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 00:38:46,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:38:46,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 00:38:46,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=694, Unknown=0, NotChecked=0, Total=756 [2022-01-19 00:38:46,246 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 00:38:46,247 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 827 places, 353 transitions, 6466 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:38:46,247 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:38:46,247 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 00:38:46,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:39:03,859 INFO L129 PetriNetUnfolder]: 3554/11285 cut-off events. [2022-01-19 00:39:03,859 INFO L130 PetriNetUnfolder]: For 724050/724113 co-relation queries the response was YES. [2022-01-19 00:39:04,143 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110526 conditions, 11285 events. 3554/11285 cut-off events. For 724050/724113 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 113585 event pairs, 1345 based on Foata normal form. 5/10971 useless extension candidates. Maximal degree in co-relation 110120. Up to 2967 conditions per place. [2022-01-19 00:39:04,193 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 663 selfloop transitions, 41 changer transitions 169/944 dead transitions. [2022-01-19 00:39:04,193 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 846 places, 944 transitions, 23895 flow [2022-01-19 00:39:04,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-19 00:39:04,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-01-19 00:39:04,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7182 transitions. [2022-01-19 00:39:04,198 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5159482758620689 [2022-01-19 00:39:04,198 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7182 transitions. [2022-01-19 00:39:04,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7182 transitions. [2022-01-19 00:39:04,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:39:04,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7182 transitions. [2022-01-19 00:39:04,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.775) internal successors, (7182), 80 states have internal predecessors, (7182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:04,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:04,209 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:04,209 INFO L186 Difference]: Start difference. First operand has 827 places, 353 transitions, 6466 flow. Second operand 80 states and 7182 transitions. [2022-01-19 00:39:04,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 846 places, 944 transitions, 23895 flow [2022-01-19 00:39:08,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 779 places, 944 transitions, 22839 flow, removed 476 selfloop flow, removed 67 redundant places. [2022-01-19 00:39:08,190 INFO L242 Difference]: Finished difference. Result has 850 places, 363 transitions, 6920 flow [2022-01-19 00:39:08,190 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=6202, PETRI_DIFFERENCE_MINUEND_PLACES=700, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=6920, PETRI_PLACES=850, PETRI_TRANSITIONS=363} [2022-01-19 00:39:08,190 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 693 predicate places. [2022-01-19 00:39:08,190 INFO L470 AbstractCegarLoop]: Abstraction has has 850 places, 363 transitions, 6920 flow [2022-01-19 00:39:08,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:08,191 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:39:08,191 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:39:08,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-01-19 00:39:08,191 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:39:08,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:39:08,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1847364631, now seen corresponding path program 21 times [2022-01-19 00:39:08,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:39:08,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543469809] [2022-01-19 00:39:08,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:39:08,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:39:08,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:39:08,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:39:08,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:39:08,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543469809] [2022-01-19 00:39:08,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543469809] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:39:08,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:39:08,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 00:39:08,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396349666] [2022-01-19 00:39:08,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:39:08,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 00:39:08,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:39:08,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 00:39:08,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-01-19 00:39:08,706 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 00:39:08,707 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 850 places, 363 transitions, 6920 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:08,707 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:39:08,707 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 00:39:08,707 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:39:24,809 INFO L129 PetriNetUnfolder]: 3697/11564 cut-off events. [2022-01-19 00:39:24,810 INFO L130 PetriNetUnfolder]: For 924542/924618 co-relation queries the response was YES. [2022-01-19 00:39:25,145 INFO L84 FinitePrefix]: Finished finitePrefix Result has 123271 conditions, 11564 events. 3697/11564 cut-off events. For 924542/924618 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 116812 event pairs, 1491 based on Foata normal form. 3/11350 useless extension candidates. Maximal degree in co-relation 122852. Up to 4166 conditions per place. [2022-01-19 00:39:25,194 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 674 selfloop transitions, 42 changer transitions 183/970 dead transitions. [2022-01-19 00:39:25,194 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 869 places, 970 transitions, 25193 flow [2022-01-19 00:39:25,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-19 00:39:25,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-01-19 00:39:25,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7193 transitions. [2022-01-19 00:39:25,198 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5167385057471264 [2022-01-19 00:39:25,198 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7193 transitions. [2022-01-19 00:39:25,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7193 transitions. [2022-01-19 00:39:25,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:39:25,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7193 transitions. [2022-01-19 00:39:25,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.9125) internal successors, (7193), 80 states have internal predecessors, (7193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:25,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:25,210 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:25,210 INFO L186 Difference]: Start difference. First operand has 850 places, 363 transitions, 6920 flow. Second operand 80 states and 7193 transitions. [2022-01-19 00:39:25,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 869 places, 970 transitions, 25193 flow [2022-01-19 00:39:29,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 802 places, 970 transitions, 22966 flow, removed 1067 selfloop flow, removed 67 redundant places. [2022-01-19 00:39:29,941 INFO L242 Difference]: Finished difference. Result has 871 places, 372 transitions, 7254 flow [2022-01-19 00:39:29,942 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=6588, PETRI_DIFFERENCE_MINUEND_PLACES=723, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=7254, PETRI_PLACES=871, PETRI_TRANSITIONS=372} [2022-01-19 00:39:29,942 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 714 predicate places. [2022-01-19 00:39:29,942 INFO L470 AbstractCegarLoop]: Abstraction has has 871 places, 372 transitions, 7254 flow [2022-01-19 00:39:29,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:29,942 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:39:29,942 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:39:29,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-01-19 00:39:29,943 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:39:29,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:39:29,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1666888879, now seen corresponding path program 22 times [2022-01-19 00:39:29,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:39:29,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916012490] [2022-01-19 00:39:29,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:39:29,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:39:29,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:39:30,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:39:30,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:39:30,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916012490] [2022-01-19 00:39:30,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916012490] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:39:30,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:39:30,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 00:39:30,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627423251] [2022-01-19 00:39:30,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:39:30,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 00:39:30,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:39:30,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 00:39:30,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2022-01-19 00:39:30,449 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 00:39:30,450 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 871 places, 372 transitions, 7254 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:30,450 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:39:30,450 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 00:39:30,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:39:47,099 INFO L129 PetriNetUnfolder]: 4113/13290 cut-off events. [2022-01-19 00:39:47,099 INFO L130 PetriNetUnfolder]: For 938948/939043 co-relation queries the response was YES. [2022-01-19 00:39:47,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 134687 conditions, 13290 events. 4113/13290 cut-off events. For 938948/939043 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 139222 event pairs, 1619 based on Foata normal form. 3/12942 useless extension candidates. Maximal degree in co-relation 134259. Up to 3272 conditions per place. [2022-01-19 00:39:47,594 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 650 selfloop transitions, 44 changer transitions 175/940 dead transitions. [2022-01-19 00:39:47,595 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 882 places, 940 transitions, 25769 flow [2022-01-19 00:39:47,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2022-01-19 00:39:47,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2022-01-19 00:39:47,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 6496 transitions. [2022-01-19 00:39:47,598 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2022-01-19 00:39:47,598 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 6496 transitions. [2022-01-19 00:39:47,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 6496 transitions. [2022-01-19 00:39:47,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:39:47,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 6496 transitions. [2022-01-19 00:39:47,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 90.22222222222223) internal successors, (6496), 72 states have internal predecessors, (6496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:47,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 174.0) internal successors, (12702), 73 states have internal predecessors, (12702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:47,643 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 174.0) internal successors, (12702), 73 states have internal predecessors, (12702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:47,643 INFO L186 Difference]: Start difference. First operand has 871 places, 372 transitions, 7254 flow. Second operand 72 states and 6496 transitions. [2022-01-19 00:39:47,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 882 places, 940 transitions, 25769 flow [2022-01-19 00:39:53,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 814 places, 940 transitions, 23641 flow, removed 1024 selfloop flow, removed 68 redundant places. [2022-01-19 00:39:53,083 INFO L242 Difference]: Finished difference. Result has 878 places, 385 transitions, 7789 flow [2022-01-19 00:39:53,084 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=6957, PETRI_DIFFERENCE_MINUEND_PLACES=743, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=7789, PETRI_PLACES=878, PETRI_TRANSITIONS=385} [2022-01-19 00:39:53,084 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 721 predicate places. [2022-01-19 00:39:53,084 INFO L470 AbstractCegarLoop]: Abstraction has has 878 places, 385 transitions, 7789 flow [2022-01-19 00:39:53,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:53,084 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:39:53,085 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:39:53,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-01-19 00:39:53,085 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:39:53,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:39:53,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1998163687, now seen corresponding path program 23 times [2022-01-19 00:39:53,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:39:53,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25699538] [2022-01-19 00:39:53,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:39:53,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:39:53,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:39:53,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:39:53,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:39:53,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25699538] [2022-01-19 00:39:53,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25699538] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:39:53,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:39:53,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 00:39:53,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450028770] [2022-01-19 00:39:53,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:39:53,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 00:39:53,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:39:53,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 00:39:53,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=678, Unknown=0, NotChecked=0, Total=756 [2022-01-19 00:39:53,617 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 00:39:53,617 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 878 places, 385 transitions, 7789 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:39:53,617 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:39:53,617 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 00:39:53,617 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:15,547 INFO L129 PetriNetUnfolder]: 4280/13462 cut-off events. [2022-01-19 00:40:15,548 INFO L130 PetriNetUnfolder]: For 1169773/1169852 co-relation queries the response was YES. [2022-01-19 00:40:15,947 INFO L84 FinitePrefix]: Finished finitePrefix Result has 148424 conditions, 13462 events. 4280/13462 cut-off events. For 1169773/1169852 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 141016 event pairs, 1753 based on Foata normal form. 8/13243 useless extension candidates. Maximal degree in co-relation 147991. Up to 5149 conditions per place. [2022-01-19 00:40:16,015 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 710 selfloop transitions, 41 changer transitions 183/1005 dead transitions. [2022-01-19 00:40:16,015 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 907 places, 1005 transitions, 26402 flow [2022-01-19 00:40:16,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-19 00:40:16,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-01-19 00:40:16,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7207 transitions. [2022-01-19 00:40:16,019 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5177442528735632 [2022-01-19 00:40:16,019 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7207 transitions. [2022-01-19 00:40:16,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7207 transitions. [2022-01-19 00:40:16,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:16,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7207 transitions. [2022-01-19 00:40:16,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 90.0875) internal successors, (7207), 80 states have internal predecessors, (7207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:16,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:16,032 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:16,032 INFO L186 Difference]: Start difference. First operand has 878 places, 385 transitions, 7789 flow. Second operand 80 states and 7207 transitions. [2022-01-19 00:40:16,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 907 places, 1005 transitions, 26402 flow [2022-01-19 00:40:22,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 850 places, 1005 transitions, 24334 flow, removed 997 selfloop flow, removed 57 redundant places. [2022-01-19 00:40:22,491 INFO L242 Difference]: Finished difference. Result has 921 places, 395 transitions, 8109 flow [2022-01-19 00:40:22,491 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=7377, PETRI_DIFFERENCE_MINUEND_PLACES=771, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=8109, PETRI_PLACES=921, PETRI_TRANSITIONS=395} [2022-01-19 00:40:22,491 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 764 predicate places. [2022-01-19 00:40:22,491 INFO L470 AbstractCegarLoop]: Abstraction has has 921 places, 395 transitions, 8109 flow [2022-01-19 00:40:22,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:22,492 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:22,492 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:22,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-01-19 00:40:22,492 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:22,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:22,492 INFO L85 PathProgramCache]: Analyzing trace with hash -229567281, now seen corresponding path program 24 times [2022-01-19 00:40:22,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:22,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472213921] [2022-01-19 00:40:22,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:22,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:22,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:40:22,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:22,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472213921] [2022-01-19 00:40:22,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472213921] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:22,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:22,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 00:40:22,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222043531] [2022-01-19 00:40:22,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:22,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 00:40:22,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:22,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 00:40:22,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=695, Unknown=0, NotChecked=0, Total=756 [2022-01-19 00:40:22,981 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 00:40:22,982 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 921 places, 395 transitions, 8109 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:22,982 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:22,982 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 00:40:22,982 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:40:41,547 INFO L129 PetriNetUnfolder]: 4474/13910 cut-off events. [2022-01-19 00:40:41,547 INFO L130 PetriNetUnfolder]: For 1114516/1114587 co-relation queries the response was YES. [2022-01-19 00:40:42,000 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151904 conditions, 13910 events. 4474/13910 cut-off events. For 1114516/1114587 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 144995 event pairs, 2893 based on Foata normal form. 6/13570 useless extension candidates. Maximal degree in co-relation 151450. Up to 3767 conditions per place. [2022-01-19 00:40:42,072 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 624 selfloop transitions, 43 changer transitions 154/892 dead transitions. [2022-01-19 00:40:42,072 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 940 places, 892 transitions, 23495 flow [2022-01-19 00:40:42,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-19 00:40:42,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-01-19 00:40:42,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7184 transitions. [2022-01-19 00:40:42,076 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5160919540229885 [2022-01-19 00:40:42,076 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7184 transitions. [2022-01-19 00:40:42,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7184 transitions. [2022-01-19 00:40:42,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:40:42,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7184 transitions. [2022-01-19 00:40:42,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.8) internal successors, (7184), 80 states have internal predecessors, (7184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:42,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:42,087 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:42,087 INFO L186 Difference]: Start difference. First operand has 921 places, 395 transitions, 8109 flow. Second operand 80 states and 7184 transitions. [2022-01-19 00:40:42,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 940 places, 892 transitions, 23495 flow [2022-01-19 00:40:49,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 872 places, 892 transitions, 22359 flow, removed 525 selfloop flow, removed 68 redundant places. [2022-01-19 00:40:49,020 INFO L242 Difference]: Finished difference. Result has 945 places, 407 transitions, 8649 flow [2022-01-19 00:40:49,020 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=7780, PETRI_DIFFERENCE_MINUEND_PLACES=793, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=8649, PETRI_PLACES=945, PETRI_TRANSITIONS=407} [2022-01-19 00:40:49,020 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 788 predicate places. [2022-01-19 00:40:49,021 INFO L470 AbstractCegarLoop]: Abstraction has has 945 places, 407 transitions, 8649 flow [2022-01-19 00:40:49,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:49,021 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:40:49,021 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:40:49,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-01-19 00:40:49,021 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:40:49,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:40:49,021 INFO L85 PathProgramCache]: Analyzing trace with hash 502877411, now seen corresponding path program 25 times [2022-01-19 00:40:49,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:40:49,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165034334] [2022-01-19 00:40:49,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:40:49,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:40:49,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:40:49,502 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 00:40:49,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:40:49,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165034334] [2022-01-19 00:40:49,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165034334] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:40:49,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:40:49,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 00:40:49,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593060806] [2022-01-19 00:40:49,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:40:49,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 00:40:49,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:40:49,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 00:40:49,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-01-19 00:40:49,504 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 00:40:49,505 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 945 places, 407 transitions, 8649 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:40:49,505 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:40:49,505 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 00:40:49,505 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:41:07,177 INFO L129 PetriNetUnfolder]: 4820/15406 cut-off events. [2022-01-19 00:41:07,177 INFO L130 PetriNetUnfolder]: For 1516034/1516142 co-relation queries the response was YES. [2022-01-19 00:41:07,763 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178010 conditions, 15406 events. 4820/15406 cut-off events. For 1516034/1516142 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 166668 event pairs, 989 based on Foata normal form. 6/15122 useless extension candidates. Maximal degree in co-relation 177543. Up to 5592 conditions per place. [2022-01-19 00:41:07,845 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 807 selfloop transitions, 66 changer transitions 175/1119 dead transitions. [2022-01-19 00:41:07,845 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 944 places, 1119 transitions, 32435 flow [2022-01-19 00:41:07,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-01-19 00:41:07,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-01-19 00:41:07,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 5448 transitions. [2022-01-19 00:41:07,848 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5218390804597701 [2022-01-19 00:41:07,848 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 5448 transitions. [2022-01-19 00:41:07,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 5448 transitions. [2022-01-19 00:41:07,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:41:07,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 5448 transitions. [2022-01-19 00:41:07,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 90.8) internal successors, (5448), 60 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 00:41:07,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 174.0) internal successors, (10614), 61 states have internal predecessors, (10614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:07,856 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 174.0) internal successors, (10614), 61 states have internal predecessors, (10614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:07,857 INFO L186 Difference]: Start difference. First operand has 945 places, 407 transitions, 8649 flow. Second operand 60 states and 5448 transitions. [2022-01-19 00:41:07,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 944 places, 1119 transitions, 32435 flow [2022-01-19 00:41:15,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 878 places, 1119 transitions, 30255 flow, removed 1066 selfloop flow, removed 66 redundant places. [2022-01-19 00:41:15,775 INFO L242 Difference]: Finished difference. Result has 930 places, 438 transitions, 10071 flow [2022-01-19 00:41:15,775 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=8238, PETRI_DIFFERENCE_MINUEND_PLACES=819, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=10071, PETRI_PLACES=930, PETRI_TRANSITIONS=438} [2022-01-19 00:41:15,776 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 773 predicate places. [2022-01-19 00:41:15,776 INFO L470 AbstractCegarLoop]: Abstraction has has 930 places, 438 transitions, 10071 flow [2022-01-19 00:41:15,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:15,776 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:41:15,776 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:41:15,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-01-19 00:41:15,776 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:41:15,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:41:15,777 INFO L85 PathProgramCache]: Analyzing trace with hash -804140971, now seen corresponding path program 26 times [2022-01-19 00:41:15,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:41:15,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658456383] [2022-01-19 00:41:15,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:41:15,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:41:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:41:16,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:41:16,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:41:16,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658456383] [2022-01-19 00:41:16,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658456383] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:41:16,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:41:16,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 00:41:16,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089213530] [2022-01-19 00:41:16,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:41:16,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 00:41:16,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:41:16,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 00:41:16,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2022-01-19 00:41:16,322 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 00:41:16,323 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 930 places, 438 transitions, 10071 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:16,323 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:41:16,323 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 00:41:16,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:41:35,985 INFO L129 PetriNetUnfolder]: 5097/15333 cut-off events. [2022-01-19 00:41:35,985 INFO L130 PetriNetUnfolder]: For 1410461/1410528 co-relation queries the response was YES. [2022-01-19 00:41:36,522 INFO L84 FinitePrefix]: Finished finitePrefix Result has 179420 conditions, 15333 events. 5097/15333 cut-off events. For 1410461/1410528 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 160756 event pairs, 3884 based on Foata normal form. 4/14986 useless extension candidates. Maximal degree in co-relation 178961. Up to 4935 conditions per place. [2022-01-19 00:41:36,604 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 660 selfloop transitions, 38 changer transitions 132/901 dead transitions. [2022-01-19 00:41:36,604 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 973 places, 901 transitions, 25071 flow [2022-01-19 00:41:36,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-19 00:41:36,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-01-19 00:41:36,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7185 transitions. [2022-01-19 00:41:36,607 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5161637931034483 [2022-01-19 00:41:36,607 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7185 transitions. [2022-01-19 00:41:36,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7185 transitions. [2022-01-19 00:41:36,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:41:36,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7185 transitions. [2022-01-19 00:41:36,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.8125) internal successors, (7185), 80 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 00:41:36,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:36,618 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:36,618 INFO L186 Difference]: Start difference. First operand has 930 places, 438 transitions, 10071 flow. Second operand 80 states and 7185 transitions. [2022-01-19 00:41:36,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 973 places, 901 transitions, 25071 flow [2022-01-19 00:41:44,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 929 places, 901 transitions, 23555 flow, removed 711 selfloop flow, removed 44 redundant places. [2022-01-19 00:41:44,536 INFO L242 Difference]: Finished difference. Result has 1003 places, 451 transitions, 10279 flow [2022-01-19 00:41:44,536 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=9290, PETRI_DIFFERENCE_MINUEND_PLACES=850, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=10279, PETRI_PLACES=1003, PETRI_TRANSITIONS=451} [2022-01-19 00:41:44,536 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 846 predicate places. [2022-01-19 00:41:44,536 INFO L470 AbstractCegarLoop]: Abstraction has has 1003 places, 451 transitions, 10279 flow [2022-01-19 00:41:44,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:44,537 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:41:44,537 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:41:44,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-01-19 00:41:44,537 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:41:44,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:41:44,537 INFO L85 PathProgramCache]: Analyzing trace with hash 877269605, now seen corresponding path program 27 times [2022-01-19 00:41:44,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:41:44,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98458743] [2022-01-19 00:41:44,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:41:44,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:41:44,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:41:45,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:41:45,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:41:45,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98458743] [2022-01-19 00:41:45,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98458743] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:41:45,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:41:45,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 00:41:45,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335529962] [2022-01-19 00:41:45,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:41:45,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 00:41:45,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:41:45,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 00:41:45,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-01-19 00:41:45,032 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 00:41:45,033 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1003 places, 451 transitions, 10279 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:41:45,033 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:41:45,033 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 00:41:45,033 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:42:02,246 INFO L129 PetriNetUnfolder]: 5521/17422 cut-off events. [2022-01-19 00:42:02,247 INFO L130 PetriNetUnfolder]: For 1939927/1940047 co-relation queries the response was YES. [2022-01-19 00:42:03,032 INFO L84 FinitePrefix]: Finished finitePrefix Result has 213596 conditions, 17422 events. 5521/17422 cut-off events. For 1939927/1940047 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 191320 event pairs, 1596 based on Foata normal form. 8/17113 useless extension candidates. Maximal degree in co-relation 213099. Up to 6125 conditions per place. [2022-01-19 00:42:03,131 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 798 selfloop transitions, 73 changer transitions 156/1098 dead transitions. [2022-01-19 00:42:03,131 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 986 places, 1098 transitions, 32595 flow [2022-01-19 00:42:03,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 00:42:03,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 00:42:03,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 4113 transitions. [2022-01-19 00:42:03,133 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5372257053291536 [2022-01-19 00:42:03,133 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 4113 transitions. [2022-01-19 00:42:03,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 4113 transitions. [2022-01-19 00:42:03,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:42:03,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 4113 transitions. [2022-01-19 00:42:03,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 93.47727272727273) internal successors, (4113), 44 states have internal predecessors, (4113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:03,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 174.0) internal successors, (7830), 45 states have internal predecessors, (7830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:03,140 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 174.0) internal successors, (7830), 45 states have internal predecessors, (7830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:03,140 INFO L186 Difference]: Start difference. First operand has 1003 places, 451 transitions, 10279 flow. Second operand 44 states and 4113 transitions. [2022-01-19 00:42:03,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 986 places, 1098 transitions, 32595 flow [2022-01-19 00:42:13,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 921 places, 1098 transitions, 30209 flow, removed 1178 selfloop flow, removed 65 redundant places. [2022-01-19 00:42:14,009 INFO L242 Difference]: Finished difference. Result has 955 places, 486 transitions, 11830 flow [2022-01-19 00:42:14,010 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=9796, PETRI_DIFFERENCE_MINUEND_PLACES=878, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=11830, PETRI_PLACES=955, PETRI_TRANSITIONS=486} [2022-01-19 00:42:14,010 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 798 predicate places. [2022-01-19 00:42:14,010 INFO L470 AbstractCegarLoop]: Abstraction has has 955 places, 486 transitions, 11830 flow [2022-01-19 00:42:14,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:14,010 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:42:14,010 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:42:14,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-01-19 00:42:14,011 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:42:14,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:42:14,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1062122567, now seen corresponding path program 28 times [2022-01-19 00:42:14,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:42:14,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675030451] [2022-01-19 00:42:14,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:42:14,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:42:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:42:14,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:42:14,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:42:14,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675030451] [2022-01-19 00:42:14,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675030451] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:42:14,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:42:14,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 00:42:14,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238693998] [2022-01-19 00:42:14,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:42:14,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 00:42:14,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:42:14,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 00:42:14,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=692, Unknown=0, NotChecked=0, Total=756 [2022-01-19 00:42:14,510 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 00:42:14,511 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 955 places, 486 transitions, 11830 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:14,511 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:42:14,511 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 00:42:14,511 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:42:35,515 INFO L129 PetriNetUnfolder]: 5551/16630 cut-off events. [2022-01-19 00:42:35,515 INFO L130 PetriNetUnfolder]: For 1616804/1616901 co-relation queries the response was YES. [2022-01-19 00:42:36,102 INFO L84 FinitePrefix]: Finished finitePrefix Result has 202448 conditions, 16630 events. 5551/16630 cut-off events. For 1616804/1616901 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 179090 event pairs, 2068 based on Foata normal form. 4/16264 useless extension candidates. Maximal degree in co-relation 201977. Up to 5822 conditions per place. [2022-01-19 00:42:36,193 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 1491 selfloop transitions, 96 changer transitions 204/1862 dead transitions. [2022-01-19 00:42:36,193 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1016 places, 1862 transitions, 59593 flow [2022-01-19 00:42:36,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-19 00:42:36,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-01-19 00:42:36,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7132 transitions. [2022-01-19 00:42:36,197 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5123563218390804 [2022-01-19 00:42:36,197 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7132 transitions. [2022-01-19 00:42:36,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7132 transitions. [2022-01-19 00:42:36,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:42:36,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7132 transitions. [2022-01-19 00:42:36,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.15) internal successors, (7132), 80 states have internal predecessors, (7132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:36,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:36,208 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:36,208 INFO L186 Difference]: Start difference. First operand has 955 places, 486 transitions, 11830 flow. Second operand 80 states and 7132 transitions. [2022-01-19 00:42:36,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1016 places, 1862 transitions, 59593 flow [2022-01-19 00:42:45,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 989 places, 1862 transitions, 56989 flow, removed 1253 selfloop flow, removed 27 redundant places. [2022-01-19 00:42:45,922 INFO L242 Difference]: Finished difference. Result has 1063 places, 499 transitions, 12081 flow [2022-01-19 00:42:45,923 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=10824, PETRI_DIFFERENCE_MINUEND_PLACES=910, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=12081, PETRI_PLACES=1063, PETRI_TRANSITIONS=499} [2022-01-19 00:42:45,923 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 906 predicate places. [2022-01-19 00:42:45,923 INFO L470 AbstractCegarLoop]: Abstraction has has 1063 places, 499 transitions, 12081 flow [2022-01-19 00:42:45,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:45,923 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:42:45,923 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:42:45,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-01-19 00:42:45,923 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:42:45,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:42:45,924 INFO L85 PathProgramCache]: Analyzing trace with hash -10922581, now seen corresponding path program 29 times [2022-01-19 00:42:45,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:42:45,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771636680] [2022-01-19 00:42:45,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:42:45,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:42:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:42:46,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:42:46,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:42:46,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771636680] [2022-01-19 00:42:46,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771636680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:42:46,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:42:46,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 00:42:46,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289967227] [2022-01-19 00:42:46,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:42:46,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 00:42:46,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:42:46,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 00:42:46,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-01-19 00:42:46,434 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 00:42:46,434 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1063 places, 499 transitions, 12081 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:42:46,434 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:42:46,435 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 00:42:46,435 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:43:08,901 INFO L129 PetriNetUnfolder]: 5555/17141 cut-off events. [2022-01-19 00:43:08,901 INFO L130 PetriNetUnfolder]: For 1909204/1909316 co-relation queries the response was YES. [2022-01-19 00:43:09,644 INFO L84 FinitePrefix]: Finished finitePrefix Result has 216162 conditions, 17141 events. 5555/17141 cut-off events. For 1909204/1909316 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 186875 event pairs, 1931 based on Foata normal form. 8/16863 useless extension candidates. Maximal degree in co-relation 215635. Up to 6120 conditions per place. [2022-01-19 00:43:09,740 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 909 selfloop transitions, 76 changer transitions 225/1281 dead transitions. [2022-01-19 00:43:09,740 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1082 places, 1281 transitions, 39604 flow [2022-01-19 00:43:09,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-19 00:43:09,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-01-19 00:43:09,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 7157 transitions. [2022-01-19 00:43:09,743 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5141522988505747 [2022-01-19 00:43:09,743 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 7157 transitions. [2022-01-19 00:43:09,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 7157 transitions. [2022-01-19 00:43:09,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:43:09,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 7157 transitions. [2022-01-19 00:43:09,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 89.4625) internal successors, (7157), 80 states have internal predecessors, (7157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:09,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:09,755 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 174.0) internal successors, (14094), 81 states have internal predecessors, (14094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:09,755 INFO L186 Difference]: Start difference. First operand has 1063 places, 499 transitions, 12081 flow. Second operand 80 states and 7157 transitions. [2022-01-19 00:43:09,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1082 places, 1281 transitions, 39604 flow [2022-01-19 00:43:25,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1017 places, 1281 transitions, 37263 flow, removed 1155 selfloop flow, removed 65 redundant places. [2022-01-19 00:43:25,048 INFO L242 Difference]: Finished difference. Result has 1083 places, 504 transitions, 12275 flow [2022-01-19 00:43:25,048 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=11736, PETRI_DIFFERENCE_MINUEND_PLACES=938, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=12275, PETRI_PLACES=1083, PETRI_TRANSITIONS=504} [2022-01-19 00:43:25,048 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 926 predicate places. [2022-01-19 00:43:25,048 INFO L470 AbstractCegarLoop]: Abstraction has has 1083 places, 504 transitions, 12275 flow [2022-01-19 00:43:25,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:25,049 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:43:25,049 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:43:25,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-01-19 00:43:25,049 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:43:25,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:43:25,049 INFO L85 PathProgramCache]: Analyzing trace with hash 732249393, now seen corresponding path program 30 times [2022-01-19 00:43:25,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:43:25,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817694889] [2022-01-19 00:43:25,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:43:25,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:43:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:43:25,550 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 00:43:25,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:43:25,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817694889] [2022-01-19 00:43:25,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817694889] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:43:25,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:43:25,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 00:43:25,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758586243] [2022-01-19 00:43:25,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:43:25,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 00:43:25,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:43:25,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 00:43:25,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-01-19 00:43:25,553 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 00:43:25,553 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1083 places, 504 transitions, 12275 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:25,553 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:43:25,553 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 00:43:25,553 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:43:41,983 INFO L129 PetriNetUnfolder]: 5520/16645 cut-off events. [2022-01-19 00:43:41,983 INFO L130 PetriNetUnfolder]: For 1605198/1605301 co-relation queries the response was YES. [2022-01-19 00:43:42,733 INFO L84 FinitePrefix]: Finished finitePrefix Result has 203357 conditions, 16645 events. 5520/16645 cut-off events. For 1605198/1605301 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 179529 event pairs, 1994 based on Foata normal form. 6/16257 useless extension candidates. Maximal degree in co-relation 202824. Up to 5822 conditions per place. [2022-01-19 00:43:42,835 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 1010 selfloop transitions, 115 changer transitions 118/1314 dead transitions. [2022-01-19 00:43:42,835 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1062 places, 1314 transitions, 39545 flow [2022-01-19 00:43:42,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-19 00:43:42,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2022-01-19 00:43:42,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 3692 transitions. [2022-01-19 00:43:42,838 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5304597701149425 [2022-01-19 00:43:42,838 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 3692 transitions. [2022-01-19 00:43:42,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 3692 transitions. [2022-01-19 00:43:42,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:43:42,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 3692 transitions. [2022-01-19 00:43:42,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 92.3) internal successors, (3692), 40 states have internal predecessors, (3692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:42,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 174.0) internal successors, (7134), 41 states have internal predecessors, (7134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:42,844 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 174.0) internal successors, (7134), 41 states have internal predecessors, (7134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:42,844 INFO L186 Difference]: Start difference. First operand has 1083 places, 504 transitions, 12275 flow. Second operand 40 states and 3692 transitions. [2022-01-19 00:43:42,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1062 places, 1314 transitions, 39545 flow [2022-01-19 00:43:55,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 981 places, 1314 transitions, 37102 flow, removed 427 selfloop flow, removed 81 redundant places. [2022-01-19 00:43:55,198 INFO L242 Difference]: Finished difference. Result has 1003 places, 526 transitions, 13176 flow [2022-01-19 00:43:55,198 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=11697, PETRI_DIFFERENCE_MINUEND_PLACES=942, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=13176, PETRI_PLACES=1003, PETRI_TRANSITIONS=526} [2022-01-19 00:43:55,198 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 846 predicate places. [2022-01-19 00:43:55,198 INFO L470 AbstractCegarLoop]: Abstraction has has 1003 places, 526 transitions, 13176 flow [2022-01-19 00:43:55,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:55,199 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:43:55,199 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:43:55,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-01-19 00:43:55,199 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:43:55,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:43:55,202 INFO L85 PathProgramCache]: Analyzing trace with hash -118132361, now seen corresponding path program 31 times [2022-01-19 00:43:55,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:43:55,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956560953] [2022-01-19 00:43:55,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:43:55,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:43:55,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:43:55,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:43:55,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:43:55,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956560953] [2022-01-19 00:43:55,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956560953] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:43:55,734 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:43:55,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 00:43:55,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295668995] [2022-01-19 00:43:55,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:43:55,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 00:43:55,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:43:55,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 00:43:55,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-01-19 00:43:55,735 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 00:43:55,736 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1003 places, 526 transitions, 13176 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:43:55,736 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:43:55,736 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 00:43:55,736 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:44:17,220 INFO L129 PetriNetUnfolder]: 5621/17232 cut-off events. [2022-01-19 00:44:17,220 INFO L130 PetriNetUnfolder]: For 1544248/1544364 co-relation queries the response was YES. [2022-01-19 00:44:17,838 INFO L84 FinitePrefix]: Finished finitePrefix Result has 200981 conditions, 17232 events. 5621/17232 cut-off events. For 1544248/1544364 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 187589 event pairs, 2038 based on Foata normal form. 6/16953 useless extension candidates. Maximal degree in co-relation 200488. Up to 6172 conditions per place. [2022-01-19 00:44:17,931 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 861 selfloop transitions, 81 changer transitions 205/1218 dead transitions. [2022-01-19 00:44:17,931 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1064 places, 1218 transitions, 35591 flow [2022-01-19 00:44:17,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-01-19 00:44:17,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2022-01-19 00:44:17,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 6832 transitions. [2022-01-19 00:44:17,935 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5166364186327889 [2022-01-19 00:44:17,935 INFO L72 ComplementDD]: Start complementDD. Operand 76 states and 6832 transitions. [2022-01-19 00:44:17,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 6832 transitions. [2022-01-19 00:44:17,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:44:17,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 76 states and 6832 transitions. [2022-01-19 00:44:17,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 77 states, 76 states have (on average 89.89473684210526) internal successors, (6832), 76 states have internal predecessors, (6832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:17,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 77 states, 77 states have (on average 174.0) internal successors, (13398), 77 states have internal predecessors, (13398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:17,946 INFO L81 ComplementDD]: Finished complementDD. Result has 77 states, 77 states have (on average 174.0) internal successors, (13398), 77 states have internal predecessors, (13398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:17,946 INFO L186 Difference]: Start difference. First operand has 1003 places, 526 transitions, 13176 flow. Second operand 76 states and 6832 transitions. [2022-01-19 00:44:17,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1064 places, 1218 transitions, 35591 flow [2022-01-19 00:44:29,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1041 places, 1218 transitions, 34127 flow, removed 444 selfloop flow, removed 23 redundant places. [2022-01-19 00:44:29,083 INFO L242 Difference]: Finished difference. Result has 1099 places, 532 transitions, 12785 flow [2022-01-19 00:44:29,084 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=12176, PETRI_DIFFERENCE_MINUEND_PLACES=966, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=12785, PETRI_PLACES=1099, PETRI_TRANSITIONS=532} [2022-01-19 00:44:29,084 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 942 predicate places. [2022-01-19 00:44:29,084 INFO L470 AbstractCegarLoop]: Abstraction has has 1099 places, 532 transitions, 12785 flow [2022-01-19 00:44:29,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:29,084 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:44:29,084 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:44:29,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-01-19 00:44:29,085 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:44:29,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:44:29,085 INFO L85 PathProgramCache]: Analyzing trace with hash 479071069, now seen corresponding path program 32 times [2022-01-19 00:44:29,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:44:29,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011674089] [2022-01-19 00:44:29,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:44:29,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:44:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:44:29,595 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 00:44:29,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:44:29,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011674089] [2022-01-19 00:44:29,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011674089] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:44:29,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:44:29,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 00:44:29,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188402675] [2022-01-19 00:44:29,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:44:29,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 00:44:29,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:44:29,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 00:44:29,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2022-01-19 00:44:29,597 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 00:44:29,598 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1099 places, 532 transitions, 12785 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:29,598 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:44:29,598 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 00:44:29,598 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:44:47,476 INFO L129 PetriNetUnfolder]: 5646/17040 cut-off events. [2022-01-19 00:44:47,477 INFO L130 PetriNetUnfolder]: For 1648555/1648665 co-relation queries the response was YES. [2022-01-19 00:44:48,179 INFO L84 FinitePrefix]: Finished finitePrefix Result has 208737 conditions, 17040 events. 5646/17040 cut-off events. For 1648555/1648665 co-relation queries the response was YES. Maximal size of possible extension queue 477. Compared 184571 event pairs, 2040 based on Foata normal form. 4/16641 useless extension candidates. Maximal degree in co-relation 208196. Up to 5822 conditions per place. [2022-01-19 00:44:48,269 INFO L132 encePairwiseOnDemand]: 136/174 looper letters, 983 selfloop transitions, 110 changer transitions 137/1301 dead transitions. [2022-01-19 00:44:48,269 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1091 places, 1301 transitions, 38851 flow [2022-01-19 00:44:48,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-19 00:44:48,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2022-01-19 00:44:48,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 4377 transitions. [2022-01-19 00:44:48,331 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.524066091954023 [2022-01-19 00:44:48,331 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 4377 transitions. [2022-01-19 00:44:48,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 4377 transitions. [2022-01-19 00:44:48,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:44:48,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 4377 transitions. [2022-01-19 00:44:48,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 91.1875) internal successors, (4377), 48 states have internal predecessors, (4377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:48,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 174.0) internal successors, (8526), 49 states have internal predecessors, (8526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:48,338 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 174.0) internal successors, (8526), 49 states have internal predecessors, (8526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:44:48,338 INFO L186 Difference]: Start difference. First operand has 1099 places, 532 transitions, 12785 flow. Second operand 48 states and 4377 transitions. [2022-01-19 00:44:48,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1091 places, 1301 transitions, 38851 flow [2022-01-19 00:45:01,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1031 places, 1301 transitions, 37889 flow, removed 425 selfloop flow, removed 60 redundant places. [2022-01-19 00:45:01,409 INFO L242 Difference]: Finished difference. Result has 1063 places, 554 transitions, 13964 flow [2022-01-19 00:45:01,409 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=174, PETRI_DIFFERENCE_MINUEND_FLOW=12530, PETRI_DIFFERENCE_MINUEND_PLACES=984, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=13964, PETRI_PLACES=1063, PETRI_TRANSITIONS=554} [2022-01-19 00:45:01,409 INFO L334 CegarLoopForPetriNet]: 157 programPoint places, 906 predicate places. [2022-01-19 00:45:01,409 INFO L470 AbstractCegarLoop]: Abstraction has has 1063 places, 554 transitions, 13964 flow [2022-01-19 00:45:01,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:01,410 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:45:01,410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:45:01,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-01-19 00:45:01,410 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 00:45:01,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:45:01,410 INFO L85 PathProgramCache]: Analyzing trace with hash 625237679, now seen corresponding path program 33 times [2022-01-19 00:45:01,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:45:01,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813396240] [2022-01-19 00:45:01,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:45:01,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:45:01,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:45:01,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:45:01,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:45:01,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813396240] [2022-01-19 00:45:01,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813396240] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:45:01,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:45:01,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-01-19 00:45:01,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438999734] [2022-01-19 00:45:01,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:45:01,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 00:45:01,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:45:01,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 00:45:01,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=689, Unknown=0, NotChecked=0, Total=756 [2022-01-19 00:45:01,930 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 174 [2022-01-19 00:45:01,930 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1063 places, 554 transitions, 13964 flow. Second operand has 28 states, 28 states have (on average 85.42857142857143) internal successors, (2392), 28 states have internal predecessors, (2392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:45:01,930 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:45:01,931 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 174 [2022-01-19 00:45:01,931 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-01-19 00:45:23,195 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 00:45:24,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-01-19 00:45:24,008 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-19 00:45:24,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-01-19 00:45:24,008 WARN L594 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (28states, 83/174 universal loopers) in iteration 113,while PetriNetUnfolder was constructing finite prefix that currently has 214480 conditions, 16911 events (5755/16910 cut-off events. For 1769277/1769374 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 184250 event pairs, 2530 based on Foata normal form. 5/16646 useless extension candidates. Maximal degree in co-relation 213958. Up to 6123 conditions per place.). [2022-01-19 00:45:24,009 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-19 00:45:24,009 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-19 00:45:24,012 INFO L732 BasicCegarLoop]: Path program histogram: [35, 35, 33, 3, 3, 2, 1, 1] [2022-01-19 00:45:24,013 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 00:45:24,013 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 00:45:24,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 12:45:24 BasicIcfg [2022-01-19 00:45:24,015 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 00:45:24,015 INFO L158 Benchmark]: Toolchain (without parser) took 741672.81ms. Allocated memory was 346.0MB in the beginning and 10.3GB in the end (delta: 10.0GB). Free memory was 291.6MB in the beginning and 4.2GB in the end (delta: -3.9GB). Peak memory consumption was 6.4GB. Max. memory is 16.0GB. [2022-01-19 00:45:24,015 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 346.0MB. Free memory is still 308.4MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 00:45:24,015 INFO L158 Benchmark]: CACSL2BoogieTranslator took 164.19ms. Allocated memory is still 346.0MB. Free memory was 291.3MB in the beginning and 316.8MB in the end (delta: -25.6MB). Peak memory consumption was 15.1MB. Max. memory is 16.0GB. [2022-01-19 00:45:24,015 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.42ms. Allocated memory is still 346.0MB. Free memory was 316.8MB in the beginning and 314.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 00:45:24,015 INFO L158 Benchmark]: Boogie Preprocessor took 15.35ms. Allocated memory is still 346.0MB. Free memory was 314.7MB in the beginning and 313.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 00:45:24,016 INFO L158 Benchmark]: RCFGBuilder took 309.88ms. Allocated memory is still 346.0MB. Free memory was 313.3MB in the beginning and 296.9MB in the end (delta: 16.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2022-01-19 00:45:24,016 INFO L158 Benchmark]: TraceAbstraction took 741142.25ms. Allocated memory was 346.0MB in the beginning and 10.3GB in the end (delta: 10.0GB). Free memory was 296.9MB in the beginning and 4.2GB in the end (delta: -3.9GB). Peak memory consumption was 6.4GB. Max. memory is 16.0GB. [2022-01-19 00:45:24,016 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 346.0MB. Free memory is still 308.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 164.19ms. Allocated memory is still 346.0MB. Free memory was 291.3MB in the beginning and 316.8MB in the end (delta: -25.6MB). Peak memory consumption was 15.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 25.42ms. Allocated memory is still 346.0MB. Free memory was 316.8MB in the beginning and 314.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 15.35ms. Allocated memory is still 346.0MB. Free memory was 314.7MB in the beginning and 313.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 309.88ms. Allocated memory is still 346.0MB. Free memory was 313.3MB in the beginning and 296.9MB in the end (delta: 16.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 741142.25ms. Allocated memory was 346.0MB in the beginning and 10.3GB in the end (delta: 10.0GB). Free memory was 296.9MB in the beginning and 4.2GB in the end (delta: -3.9GB). Peak memory consumption was 6.4GB. 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: 72]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (28states, 83/174 universal loopers) in iteration 113,while PetriNetUnfolder was constructing finite prefix that currently has 214480 conditions, 16911 events (5755/16910 cut-off events. For 1769277/1769374 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 184250 event pairs, 2530 based on Foata normal form. 5/16646 useless extension candidates. Maximal degree in co-relation 213958. Up to 6123 conditions per place.). - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (28states, 83/174 universal loopers) in iteration 113,while PetriNetUnfolder was constructing finite prefix that currently has 214480 conditions, 16911 events (5755/16910 cut-off events. For 1769277/1769374 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 184250 event pairs, 2530 based on Foata normal form. 5/16646 useless extension candidates. Maximal degree in co-relation 213958. Up to 6123 conditions per place.). - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (28states, 83/174 universal loopers) in iteration 113,while PetriNetUnfolder was constructing finite prefix that currently has 214480 conditions, 16911 events (5755/16910 cut-off events. For 1769277/1769374 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 184250 event pairs, 2530 based on Foata normal form. 5/16646 useless extension candidates. Maximal degree in co-relation 213958. Up to 6123 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 246 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: 741.0s, OverallIterations: 113, TraceHistogramMax: 1, PathProgramHistogramMax: 35, EmptinessCheckTime: 0.0s, AutomataDifference: 716.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31052 SdHoareTripleChecker+Valid, 41.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 31052 mSDsluCounter, 170816 SdHoareTripleChecker+Invalid, 35.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 169346 mSDsCounter, 181 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 93584 IncrementalHoareTripleChecker+Invalid, 93765 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 181 mSolverCounterUnsat, 13648 mSDtfsCounter, 93584 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5441 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 5077 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79296 ImplicationChecksByTransitivity, 316.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13964occurred in iteration=112, InterpolantAutomatonStates: 4114, 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: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 23.0s InterpolantComputationTime, 11831 NumberOfCodeBlocks, 11831 NumberOfCodeBlocksAsserted, 113 NumberOfCheckSat, 11718 ConstructedInterpolants, 0 QuantifiedInterpolants, 92121 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 113 InterpolantComputations, 113 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