/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-sre-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 00:52:33,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 00:52:33,569 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 00:52:33,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 00:52:33,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 00:52:33,626 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 00:52:33,628 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 00:52:33,633 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 00:52:33,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 00:52:33,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 00:52:33,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 00:52:33,635 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 00:52:33,636 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 00:52:33,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 00:52:33,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 00:52:33,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 00:52:33,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 00:52:33,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 00:52:33,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 00:52:33,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 00:52:33,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 00:52:33,647 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 00:52:33,649 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 00:52:33,650 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 00:52:33,656 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-19 00:52:33,658 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 00:52:33,658 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 00:52:33,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 00:52:33,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 00:52:33,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 00:52:33,661 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 00:52:33,661 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 00:52:33,662 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 00:52:33,662 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 00:52:33,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 00:52:33,663 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 00:52:33,663 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 00:52:33,689 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 00:52:33,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 00:52:33,690 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 00:52:33,690 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 00:52:33,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 00:52:33,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 00:52:33,690 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 00:52:33,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 00:52:33,691 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 00:52:33,691 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 00:52:33,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 00:52:33,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 00:52:33,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 00:52:33,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 00:52:33,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 00:52:33,691 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 00:52:33,691 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 00:52:33,691 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 00:52:33,691 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 00:52:33,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 00:52:33,692 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 00:52:33,692 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 00:52:33,692 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 00:52:33,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 00:52:33,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 00:52:33,692 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 00:52:33,692 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 00:52:33,692 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 00:52:33,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 00:52:33,692 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 00:52:33,692 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 00:52:33,693 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 00:52:33,830 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 00:52:33,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 00:52:33,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 00:52:33,847 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 00:52:33,847 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 00:52:33,848 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-sre-subst.wvr.c [2022-01-19 00:52:33,893 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe49d3680/a29154224c254a24b96a4953d1ab5c5e/FLAGc7d382590 [2022-01-19 00:52:34,218 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 00:52:34,219 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-sre-subst.wvr.c [2022-01-19 00:52:34,223 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe49d3680/a29154224c254a24b96a4953d1ab5c5e/FLAGc7d382590 [2022-01-19 00:52:34,634 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe49d3680/a29154224c254a24b96a4953d1ab5c5e [2022-01-19 00:52:34,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 00:52:34,637 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 00:52:34,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 00:52:34,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 00:52:34,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 00:52:34,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 12:52:34" (1/1) ... [2022-01-19 00:52:34,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b5d4945 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:52:34, skipping insertion in model container [2022-01-19 00:52:34,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 12:52:34" (1/1) ... [2022-01-19 00:52:34,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 00:52:34,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 00:52:34,799 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-sre-subst.wvr.c[2333,2346] [2022-01-19 00:52:34,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 00:52:34,806 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 00:52:34,822 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-sre-subst.wvr.c[2333,2346] [2022-01-19 00:52:34,823 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 00:52:34,832 INFO L208 MainTranslator]: Completed translation [2022-01-19 00:52:34,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:52:34 WrapperNode [2022-01-19 00:52:34,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 00:52:34,833 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 00:52:34,833 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 00:52:34,833 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 00:52:34,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:52:34" (1/1) ... [2022-01-19 00:52:34,853 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:52:34" (1/1) ... [2022-01-19 00:52:34,874 INFO L137 Inliner]: procedures = 22, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2022-01-19 00:52:34,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 00:52:34,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 00:52:34,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 00:52:34,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 00:52:34,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:52:34" (1/1) ... [2022-01-19 00:52:34,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:52:34" (1/1) ... [2022-01-19 00:52:34,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:52:34" (1/1) ... [2022-01-19 00:52:34,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:52:34" (1/1) ... [2022-01-19 00:52:34,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:52:34" (1/1) ... [2022-01-19 00:52:34,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:52:34" (1/1) ... [2022-01-19 00:52:34,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:52:34" (1/1) ... [2022-01-19 00:52:34,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 00:52:34,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 00:52:34,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 00:52:34,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 00:52:34,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:52:34" (1/1) ... [2022-01-19 00:52:34,901 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 00:52:34,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 00:52:34,922 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 00:52:34,928 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 00:52:34,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 00:52:34,947 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 00:52:34,947 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 00:52:34,947 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 00:52:34,947 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 00:52:34,947 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 00:52:34,947 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 00:52:34,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 00:52:34,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 00:52:34,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 00:52:34,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 00:52:34,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 00:52:34,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 00:52:34,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 00:52:34,949 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 00:52:35,000 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 00:52:35,001 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 00:52:35,162 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 00:52:35,171 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 00:52:35,171 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-19 00:52:35,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 12:52:35 BoogieIcfgContainer [2022-01-19 00:52:35,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 00:52:35,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 00:52:35,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 00:52:35,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 00:52:35,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 12:52:34" (1/3) ... [2022-01-19 00:52:35,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fdb57ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 12:52:35, skipping insertion in model container [2022-01-19 00:52:35,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 12:52:34" (2/3) ... [2022-01-19 00:52:35,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fdb57ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 12:52:35, skipping insertion in model container [2022-01-19 00:52:35,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 12:52:35" (3/3) ... [2022-01-19 00:52:35,178 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-sre-subst.wvr.c [2022-01-19 00:52:35,181 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 00:52:35,181 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 00:52:35,181 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 00:52:35,224 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,224 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,225 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,225 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,225 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,225 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,225 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,225 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,226 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,226 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,226 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,226 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,230 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,230 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,230 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,230 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,231 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,231 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,231 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,231 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,232 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,232 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,233 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,233 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,233 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,233 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,233 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,234 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,234 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,234 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,234 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,234 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,234 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,234 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,234 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,234 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,235 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,235 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,235 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,235 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,236 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,236 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,237 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,237 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,237 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,237 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,237 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,237 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,238 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,238 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,238 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,238 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,238 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,238 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,238 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,238 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,238 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,239 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,239 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,239 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,241 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,241 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,241 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,241 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,243 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,243 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,243 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,243 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,244 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,245 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,245 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,245 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 00:52:35,250 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-19 00:52:35,280 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 00:52:35,285 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 00:52:35,286 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 00:52:35,296 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 126 places, 124 transitions, 272 flow [2022-01-19 00:52:35,341 INFO L129 PetriNetUnfolder]: 8/121 cut-off events. [2022-01-19 00:52:35,341 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 00:52:35,345 INFO L84 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 121 events. 8/121 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 118 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2022-01-19 00:52:35,345 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 124 transitions, 272 flow [2022-01-19 00:52:35,349 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 110 transitions, 238 flow [2022-01-19 00:52:35,369 INFO L129 PetriNetUnfolder]: 8/109 cut-off events. [2022-01-19 00:52:35,369 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 00:52:35,370 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:35,370 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:52:35,370 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:52:35,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:35,374 INFO L85 PathProgramCache]: Analyzing trace with hash -2142705332, now seen corresponding path program 1 times [2022-01-19 00:52:35,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:35,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904314465] [2022-01-19 00:52:35,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:35,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:52:35,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:52:35,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:52:35,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904314465] [2022-01-19 00:52:35,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904314465] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:52:35,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:52:35,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 00:52:35,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131825992] [2022-01-19 00:52:35,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:52:35,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 00:52:35,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:52:35,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 00:52:35,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 00:52:35,756 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 124 [2022-01-19 00:52:35,761 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 110 transitions, 238 flow. Second operand has 8 states, 8 states have (on average 97.75) internal successors, (782), 8 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 00:52:35,761 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:52:35,761 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 124 [2022-01-19 00:52:35,762 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:52:35,980 INFO L129 PetriNetUnfolder]: 133/471 cut-off events. [2022-01-19 00:52:35,981 INFO L130 PetriNetUnfolder]: For 180/180 co-relation queries the response was YES. [2022-01-19 00:52:35,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 818 conditions, 471 events. 133/471 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2364 event pairs, 30 based on Foata normal form. 6/453 useless extension candidates. Maximal degree in co-relation 615. Up to 68 conditions per place. [2022-01-19 00:52:35,989 INFO L132 encePairwiseOnDemand]: 109/124 looper letters, 49 selfloop transitions, 17 changer transitions 16/164 dead transitions. [2022-01-19 00:52:35,989 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 164 transitions, 549 flow [2022-01-19 00:52:35,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 00:52:35,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 00:52:36,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1324 transitions. [2022-01-19 00:52:36,008 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8213399503722084 [2022-01-19 00:52:36,009 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1324 transitions. [2022-01-19 00:52:36,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1324 transitions. [2022-01-19 00:52:36,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:52:36,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1324 transitions. [2022-01-19 00:52:36,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 101.84615384615384) internal successors, (1324), 13 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:36,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:36,033 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:36,034 INFO L186 Difference]: Start difference. First operand has 112 places, 110 transitions, 238 flow. Second operand 13 states and 1324 transitions. [2022-01-19 00:52:36,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 164 transitions, 549 flow [2022-01-19 00:52:36,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 164 transitions, 511 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-01-19 00:52:36,044 INFO L242 Difference]: Finished difference. Result has 125 places, 120 transitions, 331 flow [2022-01-19 00:52:36,045 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=331, PETRI_PLACES=125, PETRI_TRANSITIONS=120} [2022-01-19 00:52:36,049 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 13 predicate places. [2022-01-19 00:52:36,049 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 120 transitions, 331 flow [2022-01-19 00:52:36,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 97.75) internal successors, (782), 8 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 00:52:36,050 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:36,050 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:52:36,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 00:52:36,050 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:52:36,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:36,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1204171975, now seen corresponding path program 1 times [2022-01-19 00:52:36,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:36,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572756926] [2022-01-19 00:52:36,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:36,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:36,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:52:36,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:52:36,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:52:36,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572756926] [2022-01-19 00:52:36,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572756926] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:52:36,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:52:36,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:52:36,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848437756] [2022-01-19 00:52:36,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:52:36,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:52:36,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:52:36,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:52:36,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:52:36,261 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:52:36,262 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 120 transitions, 331 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:36,262 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:52:36,262 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:52:36,262 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:52:36,458 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][101], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 8#L48-8true, 164#(and (= (* (div ~sponsored_2~0 256) 256) ~sponsored_2~0) (not (= (* (div ~sponsored_0~0 256) 256) ~sponsored_0~0))), 62#thread1ENTRYtrue, 10#L54-8true, Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), 19#L70-4true, 129#true, Black: 132#(= ~result_4~0 0), Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(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)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0))]) [2022-01-19 00:52:36,458 INFO L384 tUnfolder$Statistics]: this new event has 51 ancestors and is not cut-off event [2022-01-19 00:52:36,458 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is not cut-off event [2022-01-19 00:52:36,458 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is not cut-off event [2022-01-19 00:52:36,458 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is not cut-off event [2022-01-19 00:52:36,466 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][101], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 8#L48-8true, 164#(and (= (* (div ~sponsored_2~0 256) 256) ~sponsored_2~0) (not (= (* (div ~sponsored_0~0 256) 256) ~sponsored_0~0))), 87#L42-2true, 10#L54-8true, Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), 19#L70-4true, 129#true, Black: 132#(= ~result_4~0 0), Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0))]) [2022-01-19 00:52:36,466 INFO L384 tUnfolder$Statistics]: this new event has 52 ancestors and is not cut-off event [2022-01-19 00:52:36,466 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2022-01-19 00:52:36,466 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2022-01-19 00:52:36,466 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2022-01-19 00:52:36,469 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][101], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 8#L48-8true, 164#(and (= (* (div ~sponsored_2~0 256) 256) ~sponsored_2~0) (not (= (* (div ~sponsored_0~0 256) 256) ~sponsored_0~0))), 79#L42true, 10#L54-8true, Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), 19#L70-4true, Black: 132#(= ~result_4~0 0), 129#true, Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(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)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0))]) [2022-01-19 00:52:36,469 INFO L384 tUnfolder$Statistics]: this new event has 52 ancestors and is not cut-off event [2022-01-19 00:52:36,469 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2022-01-19 00:52:36,469 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2022-01-19 00:52:36,469 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2022-01-19 00:52:36,474 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][101], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 8#L48-8true, 164#(and (= (* (div ~sponsored_2~0 256) 256) ~sponsored_2~0) (not (= (* (div ~sponsored_0~0 256) 256) ~sponsored_0~0))), 10#L54-8true, Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), 19#L70-4true, Black: 132#(= ~result_4~0 0), 129#true, Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), 82#L42-5true, Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0))]) [2022-01-19 00:52:36,475 INFO L384 tUnfolder$Statistics]: this new event has 53 ancestors and is not cut-off event [2022-01-19 00:52:36,475 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2022-01-19 00:52:36,475 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2022-01-19 00:52:36,475 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2022-01-19 00:52:36,477 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][101], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 8#L48-8true, 164#(and (= (* (div ~sponsored_2~0 256) 256) ~sponsored_2~0) (not (= (* (div ~sponsored_0~0 256) 256) ~sponsored_0~0))), 10#L54-8true, 90#L42-3true, Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), 19#L70-4true, 129#true, Black: 132#(= ~result_4~0 0), Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(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)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0))]) [2022-01-19 00:52:36,478 INFO L384 tUnfolder$Statistics]: this new event has 53 ancestors and is not cut-off event [2022-01-19 00:52:36,478 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2022-01-19 00:52:36,478 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2022-01-19 00:52:36,478 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2022-01-19 00:52:36,530 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][101], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 113#L71-2true, 8#L48-8true, 164#(and (= (* (div ~sponsored_2~0 256) 256) ~sponsored_2~0) (not (= (* (div ~sponsored_0~0 256) 256) ~sponsored_0~0))), Black: 140#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= ~result_4~0 0)), 129#true, Black: 132#(= ~result_4~0 0), Black: 138#(and (= ~result_5~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= ~result_4~0 0)), 10#L54-8true]) [2022-01-19 00:52:36,531 INFO L384 tUnfolder$Statistics]: this new event has 62 ancestors and is not cut-off event [2022-01-19 00:52:36,531 INFO L387 tUnfolder$Statistics]: existing Event has 64 ancestors and is not cut-off event [2022-01-19 00:52:36,531 INFO L387 tUnfolder$Statistics]: existing Event has 64 ancestors and is not cut-off event [2022-01-19 00:52:36,531 INFO L387 tUnfolder$Statistics]: existing Event has 64 ancestors and is not cut-off event [2022-01-19 00:52:36,561 INFO L129 PetriNetUnfolder]: 498/2327 cut-off events. [2022-01-19 00:52:36,561 INFO L130 PetriNetUnfolder]: For 486/636 co-relation queries the response was YES. [2022-01-19 00:52:36,572 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4295 conditions, 2327 events. 498/2327 cut-off events. For 486/636 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 21774 event pairs, 123 based on Foata normal form. 36/2071 useless extension candidates. Maximal degree in co-relation 4265. Up to 331 conditions per place. [2022-01-19 00:52:36,619 INFO L132 encePairwiseOnDemand]: 113/124 looper letters, 52 selfloop transitions, 7 changer transitions 0/155 dead transitions. [2022-01-19 00:52:36,619 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 155 transitions, 531 flow [2022-01-19 00:52:36,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:52:36,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:52:36,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 551 transitions. [2022-01-19 00:52:36,621 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8887096774193548 [2022-01-19 00:52:36,621 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 551 transitions. [2022-01-19 00:52:36,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 551 transitions. [2022-01-19 00:52:36,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:52:36,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 551 transitions. [2022-01-19 00:52:36,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.2) internal successors, (551), 5 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:36,624 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:36,624 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:36,624 INFO L186 Difference]: Start difference. First operand has 125 places, 120 transitions, 331 flow. Second operand 5 states and 551 transitions. [2022-01-19 00:52:36,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 155 transitions, 531 flow [2022-01-19 00:52:36,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 155 transitions, 527 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-01-19 00:52:36,638 INFO L242 Difference]: Finished difference. Result has 124 places, 127 transitions, 397 flow [2022-01-19 00:52:36,638 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=397, PETRI_PLACES=124, PETRI_TRANSITIONS=127} [2022-01-19 00:52:36,639 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 12 predicate places. [2022-01-19 00:52:36,639 INFO L470 AbstractCegarLoop]: Abstraction has has 124 places, 127 transitions, 397 flow [2022-01-19 00:52:36,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:36,639 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:36,640 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] [2022-01-19 00:52:36,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 00:52:36,640 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:52:36,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:36,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1498378015, now seen corresponding path program 2 times [2022-01-19 00:52:36,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:36,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623244967] [2022-01-19 00:52:36,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:36,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:36,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:52:36,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:52:36,773 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:52:36,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623244967] [2022-01-19 00:52:36,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623244967] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:52:36,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:52:36,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:52:36,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809346906] [2022-01-19 00:52:36,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:52:36,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:52:36,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:52:36,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:52:36,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:52:36,775 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:52:36,776 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 127 transitions, 397 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:36,776 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:52:36,776 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:52:36,776 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:52:37,018 INFO L129 PetriNetUnfolder]: 573/2563 cut-off events. [2022-01-19 00:52:37,018 INFO L130 PetriNetUnfolder]: For 1015/1145 co-relation queries the response was YES. [2022-01-19 00:52:37,028 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5342 conditions, 2563 events. 573/2563 cut-off events. For 1015/1145 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 23934 event pairs, 122 based on Foata normal form. 56/2500 useless extension candidates. Maximal degree in co-relation 4382. Up to 318 conditions per place. [2022-01-19 00:52:37,038 INFO L132 encePairwiseOnDemand]: 110/124 looper letters, 61 selfloop transitions, 21 changer transitions 0/178 dead transitions. [2022-01-19 00:52:37,038 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 178 transitions, 780 flow [2022-01-19 00:52:37,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:52:37,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:52:37,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 556 transitions. [2022-01-19 00:52:37,039 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.896774193548387 [2022-01-19 00:52:37,039 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 556 transitions. [2022-01-19 00:52:37,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 556 transitions. [2022-01-19 00:52:37,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:52:37,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 556 transitions. [2022-01-19 00:52:37,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:37,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:37,043 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:37,043 INFO L186 Difference]: Start difference. First operand has 124 places, 127 transitions, 397 flow. Second operand 5 states and 556 transitions. [2022-01-19 00:52:37,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 178 transitions, 780 flow [2022-01-19 00:52:37,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 178 transitions, 780 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 00:52:37,056 INFO L242 Difference]: Finished difference. Result has 132 places, 145 transitions, 605 flow [2022-01-19 00:52:37,057 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=605, PETRI_PLACES=132, PETRI_TRANSITIONS=145} [2022-01-19 00:52:37,058 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 20 predicate places. [2022-01-19 00:52:37,058 INFO L470 AbstractCegarLoop]: Abstraction has has 132 places, 145 transitions, 605 flow [2022-01-19 00:52:37,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:37,059 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:37,059 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:52:37,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 00:52:37,059 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:52:37,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:37,060 INFO L85 PathProgramCache]: Analyzing trace with hash -613223827, now seen corresponding path program 1 times [2022-01-19 00:52:37,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:37,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995441523] [2022-01-19 00:52:37,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:37,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:37,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:52:37,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:52:37,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:52:37,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995441523] [2022-01-19 00:52:37,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995441523] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:52:37,210 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:52:37,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:52:37,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711046681] [2022-01-19 00:52:37,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:52:37,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:52:37,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:52:37,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:52:37,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:52:37,214 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:52:37,215 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 145 transitions, 605 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:37,215 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:52:37,215 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:52:37,215 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:52:37,647 INFO L129 PetriNetUnfolder]: 687/3225 cut-off events. [2022-01-19 00:52:37,647 INFO L130 PetriNetUnfolder]: For 3036/3173 co-relation queries the response was YES. [2022-01-19 00:52:37,661 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7285 conditions, 3225 events. 687/3225 cut-off events. For 3036/3173 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 31981 event pairs, 123 based on Foata normal form. 69/3145 useless extension candidates. Maximal degree in co-relation 6118. Up to 349 conditions per place. [2022-01-19 00:52:37,673 INFO L132 encePairwiseOnDemand]: 110/124 looper letters, 111 selfloop transitions, 40 changer transitions 9/252 dead transitions. [2022-01-19 00:52:37,673 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 252 transitions, 1598 flow [2022-01-19 00:52:37,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 00:52:37,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 00:52:37,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 772 transitions. [2022-01-19 00:52:37,675 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8894009216589862 [2022-01-19 00:52:37,676 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 772 transitions. [2022-01-19 00:52:37,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 772 transitions. [2022-01-19 00:52:37,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:52:37,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 772 transitions. [2022-01-19 00:52:37,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:37,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:37,679 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:37,679 INFO L186 Difference]: Start difference. First operand has 132 places, 145 transitions, 605 flow. Second operand 7 states and 772 transitions. [2022-01-19 00:52:37,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 252 transitions, 1598 flow [2022-01-19 00:52:37,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 252 transitions, 1598 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 00:52:37,694 INFO L242 Difference]: Finished difference. Result has 144 places, 180 transitions, 1093 flow [2022-01-19 00:52:37,694 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=605, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1093, PETRI_PLACES=144, PETRI_TRANSITIONS=180} [2022-01-19 00:52:37,695 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 32 predicate places. [2022-01-19 00:52:37,696 INFO L470 AbstractCegarLoop]: Abstraction has has 144 places, 180 transitions, 1093 flow [2022-01-19 00:52:37,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:37,696 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:37,696 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:52:37,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 00:52:37,696 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:52:37,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:37,697 INFO L85 PathProgramCache]: Analyzing trace with hash -148648603, now seen corresponding path program 1 times [2022-01-19 00:52:37,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:37,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822407630] [2022-01-19 00:52:37,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:37,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:52:37,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:52:37,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:52:37,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822407630] [2022-01-19 00:52:37,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822407630] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:52:37,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:52:37,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:52:37,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918429243] [2022-01-19 00:52:37,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:52:37,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:52:37,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:52:37,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:52:37,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:52:37,852 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:52:37,854 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 180 transitions, 1093 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:37,854 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:52:37,854 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:52:37,855 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:52:38,306 INFO L129 PetriNetUnfolder]: 636/3554 cut-off events. [2022-01-19 00:52:38,307 INFO L130 PetriNetUnfolder]: For 5898/6021 co-relation queries the response was YES. [2022-01-19 00:52:38,319 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8635 conditions, 3554 events. 636/3554 cut-off events. For 5898/6021 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 36941 event pairs, 125 based on Foata normal form. 72/3466 useless extension candidates. Maximal degree in co-relation 7511. Up to 334 conditions per place. [2022-01-19 00:52:38,330 INFO L132 encePairwiseOnDemand]: 110/124 looper letters, 116 selfloop transitions, 65 changer transitions 9/282 dead transitions. [2022-01-19 00:52:38,330 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 282 transitions, 2376 flow [2022-01-19 00:52:38,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 00:52:38,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 00:52:38,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 772 transitions. [2022-01-19 00:52:38,332 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8894009216589862 [2022-01-19 00:52:38,332 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 772 transitions. [2022-01-19 00:52:38,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 772 transitions. [2022-01-19 00:52:38,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:52:38,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 772 transitions. [2022-01-19 00:52:38,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:38,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:38,335 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:38,335 INFO L186 Difference]: Start difference. First operand has 144 places, 180 transitions, 1093 flow. Second operand 7 states and 772 transitions. [2022-01-19 00:52:38,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 282 transitions, 2376 flow [2022-01-19 00:52:38,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 282 transitions, 2368 flow, removed 4 selfloop flow, removed 1 redundant places. [2022-01-19 00:52:38,349 INFO L242 Difference]: Finished difference. Result has 154 places, 220 transitions, 1867 flow [2022-01-19 00:52:38,349 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1085, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1867, PETRI_PLACES=154, PETRI_TRANSITIONS=220} [2022-01-19 00:52:38,350 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 42 predicate places. [2022-01-19 00:52:38,350 INFO L470 AbstractCegarLoop]: Abstraction has has 154 places, 220 transitions, 1867 flow [2022-01-19 00:52:38,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:38,350 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:38,350 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:52:38,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 00:52:38,351 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:52:38,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:38,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1601579601, now seen corresponding path program 3 times [2022-01-19 00:52:38,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:38,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047712790] [2022-01-19 00:52:38,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:38,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:52:38,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:52:38,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:52:38,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047712790] [2022-01-19 00:52:38,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047712790] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:52:38,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:52:38,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:52:38,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895976150] [2022-01-19 00:52:38,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:52:38,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:52:38,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:52:38,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:52:38,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:52:38,441 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:52:38,442 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 220 transitions, 1867 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:38,442 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:52:38,442 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:52:38,442 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:52:38,887 INFO L129 PetriNetUnfolder]: 681/4157 cut-off events. [2022-01-19 00:52:38,887 INFO L130 PetriNetUnfolder]: For 8977/9112 co-relation queries the response was YES. [2022-01-19 00:52:38,907 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10400 conditions, 4157 events. 681/4157 cut-off events. For 8977/9112 co-relation queries the response was YES. Maximal size of possible extension queue 329. Compared 45547 event pairs, 168 based on Foata normal form. 54/4032 useless extension candidates. Maximal degree in co-relation 8936. Up to 429 conditions per place. [2022-01-19 00:52:38,920 INFO L132 encePairwiseOnDemand]: 113/124 looper letters, 155 selfloop transitions, 53 changer transitions 7/307 dead transitions. [2022-01-19 00:52:38,921 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 307 transitions, 3175 flow [2022-01-19 00:52:38,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 00:52:38,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 00:52:38,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 769 transitions. [2022-01-19 00:52:38,922 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8859447004608295 [2022-01-19 00:52:38,922 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 769 transitions. [2022-01-19 00:52:38,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 769 transitions. [2022-01-19 00:52:38,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:52:38,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 769 transitions. [2022-01-19 00:52:38,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:38,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:38,925 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:38,925 INFO L186 Difference]: Start difference. First operand has 154 places, 220 transitions, 1867 flow. Second operand 7 states and 769 transitions. [2022-01-19 00:52:38,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 307 transitions, 3175 flow [2022-01-19 00:52:38,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 307 transitions, 3141 flow, removed 17 selfloop flow, removed 0 redundant places. [2022-01-19 00:52:38,947 INFO L242 Difference]: Finished difference. Result has 166 places, 242 transitions, 2381 flow [2022-01-19 00:52:38,947 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1777, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2381, PETRI_PLACES=166, PETRI_TRANSITIONS=242} [2022-01-19 00:52:38,948 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 54 predicate places. [2022-01-19 00:52:38,948 INFO L470 AbstractCegarLoop]: Abstraction has has 166 places, 242 transitions, 2381 flow [2022-01-19 00:52:38,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:38,948 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:38,948 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:52:38,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 00:52:38,949 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:52:38,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:38,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1952870271, now seen corresponding path program 1 times [2022-01-19 00:52:38,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:38,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028807763] [2022-01-19 00:52:38,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:38,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:52:39,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:52:39,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:52:39,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028807763] [2022-01-19 00:52:39,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028807763] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:52:39,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:52:39,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:52:39,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66479318] [2022-01-19 00:52:39,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:52:39,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:52:39,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:52:39,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:52:39,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:52:39,057 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:52:39,058 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 242 transitions, 2381 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:39,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:52:39,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:52:39,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:52:39,611 INFO L129 PetriNetUnfolder]: 726/4918 cut-off events. [2022-01-19 00:52:39,611 INFO L130 PetriNetUnfolder]: For 12079/12261 co-relation queries the response was YES. [2022-01-19 00:52:39,637 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12376 conditions, 4918 events. 726/4918 cut-off events. For 12079/12261 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 56456 event pairs, 190 based on Foata normal form. 65/4775 useless extension candidates. Maximal degree in co-relation 10686. Up to 524 conditions per place. [2022-01-19 00:52:39,652 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 164 selfloop transitions, 72 changer transitions 6/334 dead transitions. [2022-01-19 00:52:39,652 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 334 transitions, 3957 flow [2022-01-19 00:52:39,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 00:52:39,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 00:52:39,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 769 transitions. [2022-01-19 00:52:39,654 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8859447004608295 [2022-01-19 00:52:39,654 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 769 transitions. [2022-01-19 00:52:39,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 769 transitions. [2022-01-19 00:52:39,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:52:39,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 769 transitions. [2022-01-19 00:52:39,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:39,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:39,657 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:39,657 INFO L186 Difference]: Start difference. First operand has 166 places, 242 transitions, 2381 flow. Second operand 7 states and 769 transitions. [2022-01-19 00:52:39,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 334 transitions, 3957 flow [2022-01-19 00:52:39,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 334 transitions, 3947 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-01-19 00:52:39,697 INFO L242 Difference]: Finished difference. Result has 178 places, 271 transitions, 3195 flow [2022-01-19 00:52:39,698 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2343, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3195, PETRI_PLACES=178, PETRI_TRANSITIONS=271} [2022-01-19 00:52:39,698 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 66 predicate places. [2022-01-19 00:52:39,698 INFO L470 AbstractCegarLoop]: Abstraction has has 178 places, 271 transitions, 3195 flow [2022-01-19 00:52:39,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:39,699 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:39,699 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:52:39,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 00:52:39,699 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:52:39,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:39,699 INFO L85 PathProgramCache]: Analyzing trace with hash 1617352099, now seen corresponding path program 4 times [2022-01-19 00:52:39,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:39,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448629254] [2022-01-19 00:52:39,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:39,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:39,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:52:39,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:52:39,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:52:39,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448629254] [2022-01-19 00:52:39,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448629254] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:52:39,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:52:39,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:52:39,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777423131] [2022-01-19 00:52:39,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:52:39,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:52:39,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:52:39,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:52:39,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:52:39,766 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:52:39,767 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 271 transitions, 3195 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:39,767 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:52:39,767 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:52:39,767 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:52:40,232 INFO L129 PetriNetUnfolder]: 706/4745 cut-off events. [2022-01-19 00:52:40,232 INFO L130 PetriNetUnfolder]: For 15772/15950 co-relation queries the response was YES. [2022-01-19 00:52:40,262 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12741 conditions, 4745 events. 706/4745 cut-off events. For 15772/15950 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 54166 event pairs, 186 based on Foata normal form. 61/4598 useless extension candidates. Maximal degree in co-relation 11065. Up to 512 conditions per place. [2022-01-19 00:52:40,277 INFO L132 encePairwiseOnDemand]: 110/124 looper letters, 145 selfloop transitions, 67 changer transitions 16/320 dead transitions. [2022-01-19 00:52:40,277 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 320 transitions, 4223 flow [2022-01-19 00:52:40,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:52:40,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:52:40,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 555 transitions. [2022-01-19 00:52:40,279 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8951612903225806 [2022-01-19 00:52:40,279 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 555 transitions. [2022-01-19 00:52:40,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 555 transitions. [2022-01-19 00:52:40,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:52:40,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 555 transitions. [2022-01-19 00:52:40,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:40,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:40,283 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:40,283 INFO L186 Difference]: Start difference. First operand has 178 places, 271 transitions, 3195 flow. Second operand 5 states and 555 transitions. [2022-01-19 00:52:40,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 320 transitions, 4223 flow [2022-01-19 00:52:40,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 320 transitions, 4203 flow, removed 10 selfloop flow, removed 0 redundant places. [2022-01-19 00:52:40,342 INFO L242 Difference]: Finished difference. Result has 185 places, 277 transitions, 3569 flow [2022-01-19 00:52:40,343 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3131, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3569, PETRI_PLACES=185, PETRI_TRANSITIONS=277} [2022-01-19 00:52:40,344 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 73 predicate places. [2022-01-19 00:52:40,345 INFO L470 AbstractCegarLoop]: Abstraction has has 185 places, 277 transitions, 3569 flow [2022-01-19 00:52:40,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:40,345 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:40,345 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] [2022-01-19 00:52:40,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 00:52:40,345 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:52:40,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:40,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1485326517, now seen corresponding path program 2 times [2022-01-19 00:52:40,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:40,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079191477] [2022-01-19 00:52:40,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:40,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:40,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:52:40,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:52:40,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:52:40,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079191477] [2022-01-19 00:52:40,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079191477] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:52:40,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:52:40,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:52:40,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757088167] [2022-01-19 00:52:40,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:52:40,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:52:40,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:52:40,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:52:40,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:52:40,404 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:52:40,405 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 277 transitions, 3569 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:40,405 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:52:40,405 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:52:40,405 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:52:40,859 INFO L129 PetriNetUnfolder]: 661/4490 cut-off events. [2022-01-19 00:52:40,859 INFO L130 PetriNetUnfolder]: For 18051/18207 co-relation queries the response was YES. [2022-01-19 00:52:40,885 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12338 conditions, 4490 events. 661/4490 cut-off events. For 18051/18207 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 50698 event pairs, 165 based on Foata normal form. 62/4359 useless extension candidates. Maximal degree in co-relation 10657. Up to 478 conditions per place. [2022-01-19 00:52:40,897 INFO L132 encePairwiseOnDemand]: 109/124 looper letters, 163 selfloop transitions, 51 changer transitions 14/320 dead transitions. [2022-01-19 00:52:40,898 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 320 transitions, 4418 flow [2022-01-19 00:52:40,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:52:40,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:52:40,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 555 transitions. [2022-01-19 00:52:40,902 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8951612903225806 [2022-01-19 00:52:40,902 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 555 transitions. [2022-01-19 00:52:40,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 555 transitions. [2022-01-19 00:52:40,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:52:40,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 555 transitions. [2022-01-19 00:52:40,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:40,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:40,907 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:40,907 INFO L186 Difference]: Start difference. First operand has 185 places, 277 transitions, 3569 flow. Second operand 5 states and 555 transitions. [2022-01-19 00:52:40,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 320 transitions, 4418 flow [2022-01-19 00:52:40,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 320 transitions, 4395 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-01-19 00:52:40,972 INFO L242 Difference]: Finished difference. Result has 191 places, 278 transitions, 3710 flow [2022-01-19 00:52:40,973 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3373, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3710, PETRI_PLACES=191, PETRI_TRANSITIONS=278} [2022-01-19 00:52:40,973 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 79 predicate places. [2022-01-19 00:52:40,974 INFO L470 AbstractCegarLoop]: Abstraction has has 191 places, 278 transitions, 3710 flow [2022-01-19 00:52:40,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:40,974 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:40,974 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:52:40,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 00:52:40,974 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:52:40,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:40,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1641429269, now seen corresponding path program 2 times [2022-01-19 00:52:40,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:40,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553190717] [2022-01-19 00:52:40,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:40,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:40,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:52:41,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:52:41,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:52:41,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553190717] [2022-01-19 00:52:41,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553190717] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:52:41,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:52:41,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:52:41,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930672027] [2022-01-19 00:52:41,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:52:41,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:52:41,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:52:41,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:52:41,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:52:41,049 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:52:41,049 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 278 transitions, 3710 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:41,049 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:52:41,049 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:52:41,049 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:52:41,636 INFO L129 PetriNetUnfolder]: 726/4767 cut-off events. [2022-01-19 00:52:41,636 INFO L130 PetriNetUnfolder]: For 21113/21279 co-relation queries the response was YES. [2022-01-19 00:52:41,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13801 conditions, 4767 events. 726/4767 cut-off events. For 21113/21279 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 54200 event pairs, 189 based on Foata normal form. 43/4594 useless extension candidates. Maximal degree in co-relation 11975. Up to 523 conditions per place. [2022-01-19 00:52:41,677 INFO L132 encePairwiseOnDemand]: 113/124 looper letters, 158 selfloop transitions, 104 changer transitions 5/359 dead transitions. [2022-01-19 00:52:41,677 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 359 transitions, 5455 flow [2022-01-19 00:52:41,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 00:52:41,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 00:52:41,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 769 transitions. [2022-01-19 00:52:41,679 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8859447004608295 [2022-01-19 00:52:41,679 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 769 transitions. [2022-01-19 00:52:41,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 769 transitions. [2022-01-19 00:52:41,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:52:41,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 769 transitions. [2022-01-19 00:52:41,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:41,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:41,682 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:41,682 INFO L186 Difference]: Start difference. First operand has 191 places, 278 transitions, 3710 flow. Second operand 7 states and 769 transitions. [2022-01-19 00:52:41,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 359 transitions, 5455 flow [2022-01-19 00:52:41,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 359 transitions, 5453 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-01-19 00:52:41,755 INFO L242 Difference]: Finished difference. Result has 202 places, 311 transitions, 4852 flow [2022-01-19 00:52:41,756 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3708, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4852, PETRI_PLACES=202, PETRI_TRANSITIONS=311} [2022-01-19 00:52:41,756 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 90 predicate places. [2022-01-19 00:52:41,757 INFO L470 AbstractCegarLoop]: Abstraction has has 202 places, 311 transitions, 4852 flow [2022-01-19 00:52:41,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:41,757 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:41,757 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:52:41,757 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 00:52:41,757 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:52:41,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:41,758 INFO L85 PathProgramCache]: Analyzing trace with hash -519905703, now seen corresponding path program 2 times [2022-01-19 00:52:41,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:41,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644056905] [2022-01-19 00:52:41,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:41,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:41,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:52:41,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:52:41,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:52:41,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644056905] [2022-01-19 00:52:41,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644056905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:52:41,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:52:41,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:52:41,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632867808] [2022-01-19 00:52:41,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:52:41,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:52:41,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:52:41,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:52:41,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:52:41,830 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:52:41,830 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 311 transitions, 4852 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:41,830 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:52:41,831 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:52:41,831 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:52:42,433 INFO L129 PetriNetUnfolder]: 718/4919 cut-off events. [2022-01-19 00:52:42,433 INFO L130 PetriNetUnfolder]: For 25639/25816 co-relation queries the response was YES. [2022-01-19 00:52:42,458 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14454 conditions, 4919 events. 718/4919 cut-off events. For 25639/25816 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 56844 event pairs, 214 based on Foata normal form. 48/4746 useless extension candidates. Maximal degree in co-relation 12434. Up to 532 conditions per place. [2022-01-19 00:52:42,471 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 188 selfloop transitions, 75 changer transitions 6/361 dead transitions. [2022-01-19 00:52:42,471 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 361 transitions, 5912 flow [2022-01-19 00:52:42,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 00:52:42,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 00:52:42,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 763 transitions. [2022-01-19 00:52:42,473 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8790322580645161 [2022-01-19 00:52:42,473 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 763 transitions. [2022-01-19 00:52:42,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 763 transitions. [2022-01-19 00:52:42,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:52:42,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 763 transitions. [2022-01-19 00:52:42,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:42,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:42,476 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:42,476 INFO L186 Difference]: Start difference. First operand has 202 places, 311 transitions, 4852 flow. Second operand 7 states and 763 transitions. [2022-01-19 00:52:42,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 361 transitions, 5912 flow [2022-01-19 00:52:42,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 361 transitions, 5848 flow, removed 32 selfloop flow, removed 0 redundant places. [2022-01-19 00:52:42,575 INFO L242 Difference]: Finished difference. Result has 211 places, 317 transitions, 5119 flow [2022-01-19 00:52:42,575 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4736, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5119, PETRI_PLACES=211, PETRI_TRANSITIONS=317} [2022-01-19 00:52:42,576 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 99 predicate places. [2022-01-19 00:52:42,576 INFO L470 AbstractCegarLoop]: Abstraction has has 211 places, 317 transitions, 5119 flow [2022-01-19 00:52:42,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:42,576 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:42,576 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:52:42,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-19 00:52:42,576 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:52:42,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:42,577 INFO L85 PathProgramCache]: Analyzing trace with hash -878726137, now seen corresponding path program 3 times [2022-01-19 00:52:42,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:42,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861907753] [2022-01-19 00:52:42,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:42,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:42,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:52:42,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:52:42,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:52:42,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861907753] [2022-01-19 00:52:42,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861907753] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:52:42,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:52:42,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:52:42,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113242205] [2022-01-19 00:52:42,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:52:42,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:52:42,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:52:42,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:52:42,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:52:42,674 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:52:42,675 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 317 transitions, 5119 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:42,675 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:52:42,675 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:52:42,675 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:52:43,315 INFO L129 PetriNetUnfolder]: 717/5058 cut-off events. [2022-01-19 00:52:43,315 INFO L130 PetriNetUnfolder]: For 26915/27078 co-relation queries the response was YES. [2022-01-19 00:52:43,339 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14919 conditions, 5058 events. 717/5058 cut-off events. For 26915/27078 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 59286 event pairs, 206 based on Foata normal form. 45/4886 useless extension candidates. Maximal degree in co-relation 12959. Up to 506 conditions per place. [2022-01-19 00:52:43,351 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 196 selfloop transitions, 86 changer transitions 9/383 dead transitions. [2022-01-19 00:52:43,351 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 383 transitions, 6537 flow [2022-01-19 00:52:43,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 00:52:43,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 00:52:43,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 768 transitions. [2022-01-19 00:52:43,353 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8847926267281107 [2022-01-19 00:52:43,353 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 768 transitions. [2022-01-19 00:52:43,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 768 transitions. [2022-01-19 00:52:43,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:52:43,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 768 transitions. [2022-01-19 00:52:43,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.71428571428571) internal successors, (768), 7 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:43,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:43,356 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:43,356 INFO L186 Difference]: Start difference. First operand has 211 places, 317 transitions, 5119 flow. Second operand 7 states and 768 transitions. [2022-01-19 00:52:43,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 383 transitions, 6537 flow [2022-01-19 00:52:43,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 383 transitions, 6531 flow, removed 3 selfloop flow, removed 0 redundant places. [2022-01-19 00:52:43,444 INFO L242 Difference]: Finished difference. Result has 221 places, 333 transitions, 5675 flow [2022-01-19 00:52:43,445 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5055, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5675, PETRI_PLACES=221, PETRI_TRANSITIONS=333} [2022-01-19 00:52:43,446 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 109 predicate places. [2022-01-19 00:52:43,446 INFO L470 AbstractCegarLoop]: Abstraction has has 221 places, 333 transitions, 5675 flow [2022-01-19 00:52:43,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:43,446 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:43,446 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:52:43,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-19 00:52:43,446 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:52:43,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:43,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1431994733, now seen corresponding path program 4 times [2022-01-19 00:52:43,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:43,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585393987] [2022-01-19 00:52:43,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:43,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:52:43,502 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 00:52:43,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:52:43,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585393987] [2022-01-19 00:52:43,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585393987] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:52:43,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:52:43,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:52:43,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724502415] [2022-01-19 00:52:43,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:52:43,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:52:43,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:52:43,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:52:43,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:52:43,504 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:52:43,504 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 333 transitions, 5675 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:43,504 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:52:43,504 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:52:43,504 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:52:44,140 INFO L129 PetriNetUnfolder]: 730/5408 cut-off events. [2022-01-19 00:52:44,140 INFO L130 PetriNetUnfolder]: For 29357/29536 co-relation queries the response was YES. [2022-01-19 00:52:44,169 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15871 conditions, 5408 events. 730/5408 cut-off events. For 29357/29536 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 64206 event pairs, 196 based on Foata normal form. 58/5226 useless extension candidates. Maximal degree in co-relation 13778. Up to 581 conditions per place. [2022-01-19 00:52:44,182 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 197 selfloop transitions, 75 changer transitions 2/366 dead transitions. [2022-01-19 00:52:44,182 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 366 transitions, 6647 flow [2022-01-19 00:52:44,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:52:44,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:52:44,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 547 transitions. [2022-01-19 00:52:44,184 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.882258064516129 [2022-01-19 00:52:44,184 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 547 transitions. [2022-01-19 00:52:44,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 547 transitions. [2022-01-19 00:52:44,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:52:44,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 547 transitions. [2022-01-19 00:52:44,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.4) internal successors, (547), 5 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:44,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:44,186 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:44,186 INFO L186 Difference]: Start difference. First operand has 221 places, 333 transitions, 5675 flow. Second operand 5 states and 547 transitions. [2022-01-19 00:52:44,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 366 transitions, 6647 flow [2022-01-19 00:52:44,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 366 transitions, 6603 flow, removed 22 selfloop flow, removed 0 redundant places. [2022-01-19 00:52:44,303 INFO L242 Difference]: Finished difference. Result has 229 places, 341 transitions, 6124 flow [2022-01-19 00:52:44,304 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5633, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6124, PETRI_PLACES=229, PETRI_TRANSITIONS=341} [2022-01-19 00:52:44,304 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 117 predicate places. [2022-01-19 00:52:44,304 INFO L470 AbstractCegarLoop]: Abstraction has has 229 places, 341 transitions, 6124 flow [2022-01-19 00:52:44,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:44,305 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:44,305 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:52:44,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-19 00:52:44,305 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:52:44,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:44,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1486639325, now seen corresponding path program 5 times [2022-01-19 00:52:44,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:44,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048356409] [2022-01-19 00:52:44,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:44,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:52:44,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:52:44,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:52:44,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048356409] [2022-01-19 00:52:44,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048356409] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:52:44,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:52:44,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:52:44,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187711204] [2022-01-19 00:52:44,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:52:44,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:52:44,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:52:44,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:52:44,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:52:44,375 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:52:44,376 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 341 transitions, 6124 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:44,376 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:52:44,376 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:52:44,376 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:52:45,117 INFO L129 PetriNetUnfolder]: 707/5270 cut-off events. [2022-01-19 00:52:45,117 INFO L130 PetriNetUnfolder]: For 33397/33542 co-relation queries the response was YES. [2022-01-19 00:52:45,151 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16024 conditions, 5270 events. 707/5270 cut-off events. For 33397/33542 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 62877 event pairs, 185 based on Foata normal form. 50/5105 useless extension candidates. Maximal degree in co-relation 14056. Up to 556 conditions per place. [2022-01-19 00:52:45,164 INFO L132 encePairwiseOnDemand]: 113/124 looper letters, 191 selfloop transitions, 94 changer transitions 6/383 dead transitions. [2022-01-19 00:52:45,165 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 383 transitions, 7166 flow [2022-01-19 00:52:45,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 00:52:45,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 00:52:45,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 762 transitions. [2022-01-19 00:52:45,167 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8778801843317973 [2022-01-19 00:52:45,167 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 762 transitions. [2022-01-19 00:52:45,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 762 transitions. [2022-01-19 00:52:45,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:52:45,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 762 transitions. [2022-01-19 00:52:45,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.85714285714286) internal successors, (762), 7 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:45,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:45,170 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:45,170 INFO L186 Difference]: Start difference. First operand has 229 places, 341 transitions, 6124 flow. Second operand 7 states and 762 transitions. [2022-01-19 00:52:45,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 383 transitions, 7166 flow [2022-01-19 00:52:45,281 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 383 transitions, 7144 flow, removed 11 selfloop flow, removed 0 redundant places. [2022-01-19 00:52:45,286 INFO L242 Difference]: Finished difference. Result has 238 places, 348 transitions, 6590 flow [2022-01-19 00:52:45,287 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6102, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6590, PETRI_PLACES=238, PETRI_TRANSITIONS=348} [2022-01-19 00:52:45,287 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 126 predicate places. [2022-01-19 00:52:45,287 INFO L470 AbstractCegarLoop]: Abstraction has has 238 places, 348 transitions, 6590 flow [2022-01-19 00:52:45,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:45,287 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:45,288 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:52:45,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-19 00:52:45,288 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:52:45,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:45,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1099339847, now seen corresponding path program 3 times [2022-01-19 00:52:45,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:45,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046965341] [2022-01-19 00:52:45,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:45,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:52:45,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:52:45,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:52:45,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046965341] [2022-01-19 00:52:45,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046965341] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:52:45,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:52:45,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 00:52:45,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409113588] [2022-01-19 00:52:45,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:52:45,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 00:52:45,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:52:45,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 00:52:45,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-19 00:52:45,347 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:52:45,347 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 348 transitions, 6590 flow. Second operand has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:45,347 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:52:45,347 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:52:45,347 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:52:46,004 INFO L129 PetriNetUnfolder]: 685/5239 cut-off events. [2022-01-19 00:52:46,005 INFO L130 PetriNetUnfolder]: For 35324/35534 co-relation queries the response was YES. [2022-01-19 00:52:46,032 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15595 conditions, 5239 events. 685/5239 cut-off events. For 35324/35534 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 62169 event pairs, 217 based on Foata normal form. 74/5074 useless extension candidates. Maximal degree in co-relation 13865. Up to 529 conditions per place. [2022-01-19 00:52:46,042 INFO L132 encePairwiseOnDemand]: 118/124 looper letters, 260 selfloop transitions, 41 changer transitions 12/405 dead transitions. [2022-01-19 00:52:46,042 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 405 transitions, 8268 flow [2022-01-19 00:52:46,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 00:52:46,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 00:52:46,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 443 transitions. [2022-01-19 00:52:46,044 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8931451612903226 [2022-01-19 00:52:46,044 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 443 transitions. [2022-01-19 00:52:46,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 443 transitions. [2022-01-19 00:52:46,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:52:46,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 443 transitions. [2022-01-19 00:52:46,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:46,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:46,046 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:46,046 INFO L186 Difference]: Start difference. First operand has 238 places, 348 transitions, 6590 flow. Second operand 4 states and 443 transitions. [2022-01-19 00:52:46,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 405 transitions, 8268 flow [2022-01-19 00:52:46,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 405 transitions, 8126 flow, removed 22 selfloop flow, removed 3 redundant places. [2022-01-19 00:52:46,166 INFO L242 Difference]: Finished difference. Result has 241 places, 348 transitions, 6489 flow [2022-01-19 00:52:46,166 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6212, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=6489, PETRI_PLACES=241, PETRI_TRANSITIONS=348} [2022-01-19 00:52:46,167 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 129 predicate places. [2022-01-19 00:52:46,167 INFO L470 AbstractCegarLoop]: Abstraction has has 241 places, 348 transitions, 6489 flow [2022-01-19 00:52:46,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:46,167 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:46,167 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:52:46,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-19 00:52:46,167 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:52:46,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:46,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1429608049, now seen corresponding path program 5 times [2022-01-19 00:52:46,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:46,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945476583] [2022-01-19 00:52:46,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:46,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:46,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:52:46,218 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 00:52:46,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:52:46,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945476583] [2022-01-19 00:52:46,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945476583] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:52:46,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:52:46,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:52:46,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788570558] [2022-01-19 00:52:46,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:52:46,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:52:46,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:52:46,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:52:46,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:52:46,221 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:52:46,222 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 348 transitions, 6489 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:46,222 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:52:46,222 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:52:46,222 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:52:46,894 INFO L129 PetriNetUnfolder]: 685/5344 cut-off events. [2022-01-19 00:52:46,894 INFO L130 PetriNetUnfolder]: For 33347/33515 co-relation queries the response was YES. [2022-01-19 00:52:46,919 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15768 conditions, 5344 events. 685/5344 cut-off events. For 33347/33515 co-relation queries the response was YES. Maximal size of possible extension queue 401. Compared 64162 event pairs, 203 based on Foata normal form. 59/5191 useless extension candidates. Maximal degree in co-relation 14091. Up to 588 conditions per place. [2022-01-19 00:52:46,928 INFO L132 encePairwiseOnDemand]: 113/124 looper letters, 206 selfloop transitions, 75 changer transitions 1/374 dead transitions. [2022-01-19 00:52:46,928 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 374 transitions, 7321 flow [2022-01-19 00:52:46,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:52:46,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:52:46,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 546 transitions. [2022-01-19 00:52:46,935 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8806451612903226 [2022-01-19 00:52:46,935 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 546 transitions. [2022-01-19 00:52:46,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 546 transitions. [2022-01-19 00:52:46,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:52:46,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 546 transitions. [2022-01-19 00:52:46,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:46,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:46,941 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:46,942 INFO L186 Difference]: Start difference. First operand has 241 places, 348 transitions, 6489 flow. Second operand 5 states and 546 transitions. [2022-01-19 00:52:46,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 374 transitions, 7321 flow [2022-01-19 00:52:47,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 374 transitions, 7295 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-01-19 00:52:47,052 INFO L242 Difference]: Finished difference. Result has 246 places, 352 transitions, 6739 flow [2022-01-19 00:52:47,052 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6463, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6739, PETRI_PLACES=246, PETRI_TRANSITIONS=352} [2022-01-19 00:52:47,052 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 134 predicate places. [2022-01-19 00:52:47,052 INFO L470 AbstractCegarLoop]: Abstraction has has 246 places, 352 transitions, 6739 flow [2022-01-19 00:52:47,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:47,053 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:47,053 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:52:47,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-19 00:52:47,053 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:52:47,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:47,053 INFO L85 PathProgramCache]: Analyzing trace with hash 24432091, now seen corresponding path program 6 times [2022-01-19 00:52:47,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:47,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566602899] [2022-01-19 00:52:47,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:47,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:47,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:52:47,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:52:47,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:52:47,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566602899] [2022-01-19 00:52:47,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566602899] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:52:47,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:52:47,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:52:47,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222699735] [2022-01-19 00:52:47,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:52:47,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:52:47,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:52:47,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:52:47,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:52:47,114 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:52:47,115 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 352 transitions, 6739 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:47,115 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:52:47,115 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:52:47,115 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:52:47,847 INFO L129 PetriNetUnfolder]: 679/5351 cut-off events. [2022-01-19 00:52:47,848 INFO L130 PetriNetUnfolder]: For 35254/35448 co-relation queries the response was YES. [2022-01-19 00:52:47,939 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15888 conditions, 5351 events. 679/5351 cut-off events. For 35254/35448 co-relation queries the response was YES. Maximal size of possible extension queue 400. Compared 64362 event pairs, 164 based on Foata normal form. 62/5201 useless extension candidates. Maximal degree in co-relation 14838. Up to 580 conditions per place. [2022-01-19 00:52:47,948 INFO L132 encePairwiseOnDemand]: 109/124 looper letters, 197 selfloop transitions, 97 changer transitions 5/391 dead transitions. [2022-01-19 00:52:47,948 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 391 transitions, 7739 flow [2022-01-19 00:52:47,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 00:52:47,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 00:52:47,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 762 transitions. [2022-01-19 00:52:47,950 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8778801843317973 [2022-01-19 00:52:47,950 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 762 transitions. [2022-01-19 00:52:47,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 762 transitions. [2022-01-19 00:52:47,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:52:47,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 762 transitions. [2022-01-19 00:52:47,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.85714285714286) internal successors, (762), 7 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:47,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:47,953 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:47,953 INFO L186 Difference]: Start difference. First operand has 246 places, 352 transitions, 6739 flow. Second operand 7 states and 762 transitions. [2022-01-19 00:52:47,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 391 transitions, 7739 flow [2022-01-19 00:52:48,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 391 transitions, 7623 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-01-19 00:52:48,073 INFO L242 Difference]: Finished difference. Result has 255 places, 356 transitions, 7096 flow [2022-01-19 00:52:48,073 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6595, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7096, PETRI_PLACES=255, PETRI_TRANSITIONS=356} [2022-01-19 00:52:48,073 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 143 predicate places. [2022-01-19 00:52:48,073 INFO L470 AbstractCegarLoop]: Abstraction has has 255 places, 356 transitions, 7096 flow [2022-01-19 00:52:48,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:48,074 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:48,074 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:52:48,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-19 00:52:48,074 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:52:48,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:48,074 INFO L85 PathProgramCache]: Analyzing trace with hash -311761247, now seen corresponding path program 6 times [2022-01-19 00:52:48,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:48,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049408848] [2022-01-19 00:52:48,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:48,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:48,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:52:48,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:52:48,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:52:48,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049408848] [2022-01-19 00:52:48,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049408848] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:52:48,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:52:48,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:52:48,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894362848] [2022-01-19 00:52:48,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:52:48,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:52:48,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:52:48,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:52:48,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:52:48,120 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:52:48,120 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 356 transitions, 7096 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:48,120 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:52:48,120 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:52:48,120 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:52:48,761 INFO L129 PetriNetUnfolder]: 648/5036 cut-off events. [2022-01-19 00:52:48,761 INFO L130 PetriNetUnfolder]: For 35835/36012 co-relation queries the response was YES. [2022-01-19 00:52:48,799 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15537 conditions, 5036 events. 648/5036 cut-off events. For 35835/36012 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 59419 event pairs, 148 based on Foata normal form. 58/4880 useless extension candidates. Maximal degree in co-relation 14602. Up to 539 conditions per place. [2022-01-19 00:52:48,810 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 197 selfloop transitions, 84 changer transitions 4/377 dead transitions. [2022-01-19 00:52:48,810 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 377 transitions, 7686 flow [2022-01-19 00:52:48,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 00:52:48,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 00:52:48,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 661 transitions. [2022-01-19 00:52:48,811 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8884408602150538 [2022-01-19 00:52:48,811 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 661 transitions. [2022-01-19 00:52:48,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 661 transitions. [2022-01-19 00:52:48,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:52:48,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 661 transitions. [2022-01-19 00:52:48,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.16666666666667) internal successors, (661), 6 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:48,813 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:48,813 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:48,813 INFO L186 Difference]: Start difference. First operand has 255 places, 356 transitions, 7096 flow. Second operand 6 states and 661 transitions. [2022-01-19 00:52:48,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 377 transitions, 7686 flow [2022-01-19 00:52:48,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 377 transitions, 7566 flow, removed 16 selfloop flow, removed 3 redundant places. [2022-01-19 00:52:49,053 INFO L242 Difference]: Finished difference. Result has 257 places, 348 transitions, 6886 flow [2022-01-19 00:52:49,054 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6746, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=6886, PETRI_PLACES=257, PETRI_TRANSITIONS=348} [2022-01-19 00:52:49,054 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 145 predicate places. [2022-01-19 00:52:49,054 INFO L470 AbstractCegarLoop]: Abstraction has has 257 places, 348 transitions, 6886 flow [2022-01-19 00:52:49,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:49,054 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:49,054 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:52:49,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-19 00:52:49,055 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:52:49,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:49,055 INFO L85 PathProgramCache]: Analyzing trace with hash -787788849, now seen corresponding path program 7 times [2022-01-19 00:52:49,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:49,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962358104] [2022-01-19 00:52:49,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:49,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:49,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:52:49,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:52:49,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:52:49,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962358104] [2022-01-19 00:52:49,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962358104] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:52:49,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:52:49,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:52:49,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652282383] [2022-01-19 00:52:49,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:52:49,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:52:49,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:52:49,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:52:49,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:52:49,109 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:52:49,109 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 348 transitions, 6886 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:49,109 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:52:49,109 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:52:49,109 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:52:49,816 INFO L129 PetriNetUnfolder]: 612/4777 cut-off events. [2022-01-19 00:52:49,816 INFO L130 PetriNetUnfolder]: For 33927/34094 co-relation queries the response was YES. [2022-01-19 00:52:49,855 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15017 conditions, 4777 events. 612/4777 cut-off events. For 33927/34094 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 55942 event pairs, 146 based on Foata normal form. 54/4628 useless extension candidates. Maximal degree in co-relation 14081. Up to 485 conditions per place. [2022-01-19 00:52:49,867 INFO L132 encePairwiseOnDemand]: 116/124 looper letters, 211 selfloop transitions, 64 changer transitions 1/368 dead transitions. [2022-01-19 00:52:49,867 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 368 transitions, 7579 flow [2022-01-19 00:52:49,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:52:49,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:52:49,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 544 transitions. [2022-01-19 00:52:49,869 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8774193548387097 [2022-01-19 00:52:49,869 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 544 transitions. [2022-01-19 00:52:49,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 544 transitions. [2022-01-19 00:52:49,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:52:49,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 544 transitions. [2022-01-19 00:52:49,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.8) internal successors, (544), 5 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:49,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:49,871 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:49,871 INFO L186 Difference]: Start difference. First operand has 257 places, 348 transitions, 6886 flow. Second operand 5 states and 544 transitions. [2022-01-19 00:52:49,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 368 transitions, 7579 flow [2022-01-19 00:52:50,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 368 transitions, 7400 flow, removed 29 selfloop flow, removed 5 redundant places. [2022-01-19 00:52:50,021 INFO L242 Difference]: Finished difference. Result has 257 places, 346 transitions, 6805 flow [2022-01-19 00:52:50,021 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6639, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6805, PETRI_PLACES=257, PETRI_TRANSITIONS=346} [2022-01-19 00:52:50,021 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 145 predicate places. [2022-01-19 00:52:50,022 INFO L470 AbstractCegarLoop]: Abstraction has has 257 places, 346 transitions, 6805 flow [2022-01-19 00:52:50,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:50,022 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:50,022 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:52:50,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-19 00:52:50,022 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:52:50,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:50,023 INFO L85 PathProgramCache]: Analyzing trace with hash 745881139, now seen corresponding path program 8 times [2022-01-19 00:52:50,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:50,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056283173] [2022-01-19 00:52:50,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:50,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:52:50,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:52:50,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:52:50,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056283173] [2022-01-19 00:52:50,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056283173] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:52:50,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:52:50,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:52:50,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172885942] [2022-01-19 00:52:50,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:52:50,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:52:50,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:52:50,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:52:50,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:52:50,078 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:52:50,079 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 346 transitions, 6805 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:50,079 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:52:50,079 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:52:50,079 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:52:50,773 INFO L129 PetriNetUnfolder]: 648/5035 cut-off events. [2022-01-19 00:52:50,773 INFO L130 PetriNetUnfolder]: For 35410/35593 co-relation queries the response was YES. [2022-01-19 00:52:50,798 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15872 conditions, 5035 events. 648/5035 cut-off events. For 35410/35593 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 59718 event pairs, 164 based on Foata normal form. 54/4871 useless extension candidates. Maximal degree in co-relation 14947. Up to 510 conditions per place. [2022-01-19 00:52:50,809 INFO L132 encePairwiseOnDemand]: 115/124 looper letters, 206 selfloop transitions, 87 changer transitions 0/385 dead transitions. [2022-01-19 00:52:50,809 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 385 transitions, 8111 flow [2022-01-19 00:52:50,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:52:50,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:52:50,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 548 transitions. [2022-01-19 00:52:50,823 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8838709677419355 [2022-01-19 00:52:50,823 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 548 transitions. [2022-01-19 00:52:50,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 548 transitions. [2022-01-19 00:52:50,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:52:50,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 548 transitions. [2022-01-19 00:52:50,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:50,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:50,825 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:50,825 INFO L186 Difference]: Start difference. First operand has 257 places, 346 transitions, 6805 flow. Second operand 5 states and 548 transitions. [2022-01-19 00:52:50,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 385 transitions, 8111 flow [2022-01-19 00:52:50,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 385 transitions, 7976 flow, removed 8 selfloop flow, removed 3 redundant places. [2022-01-19 00:52:50,964 INFO L242 Difference]: Finished difference. Result has 261 places, 361 transitions, 7423 flow [2022-01-19 00:52:50,964 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6677, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7423, PETRI_PLACES=261, PETRI_TRANSITIONS=361} [2022-01-19 00:52:50,965 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 149 predicate places. [2022-01-19 00:52:50,965 INFO L470 AbstractCegarLoop]: Abstraction has has 261 places, 361 transitions, 7423 flow [2022-01-19 00:52:50,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:50,965 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:50,965 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:52:50,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-19 00:52:50,965 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:52:50,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:50,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1821057965, now seen corresponding path program 9 times [2022-01-19 00:52:50,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:50,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127092594] [2022-01-19 00:52:50,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:50,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:52:51,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:52:51,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:52:51,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127092594] [2022-01-19 00:52:51,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127092594] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:52:51,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:52:51,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:52:51,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108136096] [2022-01-19 00:52:51,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:52:51,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:52:51,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:52:51,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:52:51,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:52:51,013 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:52:51,013 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 361 transitions, 7423 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:51,013 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:52:51,013 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:52:51,014 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:52:51,642 INFO L129 PetriNetUnfolder]: 660/5128 cut-off events. [2022-01-19 00:52:51,642 INFO L130 PetriNetUnfolder]: For 40522/40710 co-relation queries the response was YES. [2022-01-19 00:52:51,681 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16151 conditions, 5128 events. 660/5128 cut-off events. For 40522/40710 co-relation queries the response was YES. Maximal size of possible extension queue 395. Compared 61162 event pairs, 201 based on Foata normal form. 56/4970 useless extension candidates. Maximal degree in co-relation 15232. Up to 524 conditions per place. [2022-01-19 00:52:51,693 INFO L132 encePairwiseOnDemand]: 115/124 looper letters, 212 selfloop transitions, 78 changer transitions 0/382 dead transitions. [2022-01-19 00:52:51,693 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 382 transitions, 8222 flow [2022-01-19 00:52:51,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:52:51,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:52:51,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 545 transitions. [2022-01-19 00:52:51,694 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8790322580645161 [2022-01-19 00:52:51,694 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 545 transitions. [2022-01-19 00:52:51,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 545 transitions. [2022-01-19 00:52:51,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:52:51,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 545 transitions. [2022-01-19 00:52:51,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:51,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:51,695 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:51,696 INFO L186 Difference]: Start difference. First operand has 261 places, 361 transitions, 7423 flow. Second operand 5 states and 545 transitions. [2022-01-19 00:52:51,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 382 transitions, 8222 flow [2022-01-19 00:52:51,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 382 transitions, 8164 flow, removed 12 selfloop flow, removed 1 redundant places. [2022-01-19 00:52:51,845 INFO L242 Difference]: Finished difference. Result has 265 places, 363 transitions, 7635 flow [2022-01-19 00:52:51,845 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7289, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7635, PETRI_PLACES=265, PETRI_TRANSITIONS=363} [2022-01-19 00:52:51,845 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 153 predicate places. [2022-01-19 00:52:51,845 INFO L470 AbstractCegarLoop]: Abstraction has has 265 places, 363 transitions, 7635 flow [2022-01-19 00:52:51,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:51,846 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:51,846 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:52:51,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-19 00:52:51,846 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:52:51,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:51,846 INFO L85 PathProgramCache]: Analyzing trace with hash -611779683, now seen corresponding path program 7 times [2022-01-19 00:52:51,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:51,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684009547] [2022-01-19 00:52:51,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:51,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:51,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:52:51,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:52:51,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:52:51,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684009547] [2022-01-19 00:52:51,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684009547] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:52:51,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:52:51,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:52:51,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887368804] [2022-01-19 00:52:51,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:52:51,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:52:51,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:52:51,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:52:51,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:52:51,918 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:52:51,918 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 363 transitions, 7635 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:51,918 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:52:51,918 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:52:51,918 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:52:52,641 INFO L129 PetriNetUnfolder]: 714/5464 cut-off events. [2022-01-19 00:52:52,641 INFO L130 PetriNetUnfolder]: For 43137/43348 co-relation queries the response was YES. [2022-01-19 00:52:52,675 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17146 conditions, 5464 events. 714/5464 cut-off events. For 43137/43348 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 65767 event pairs, 191 based on Foata normal form. 68/5318 useless extension candidates. Maximal degree in co-relation 16042. Up to 593 conditions per place. [2022-01-19 00:52:52,687 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 207 selfloop transitions, 83 changer transitions 7/389 dead transitions. [2022-01-19 00:52:52,687 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 389 transitions, 8607 flow [2022-01-19 00:52:52,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:52:52,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:52:52,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 548 transitions. [2022-01-19 00:52:52,688 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8838709677419355 [2022-01-19 00:52:52,688 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 548 transitions. [2022-01-19 00:52:52,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 548 transitions. [2022-01-19 00:52:52,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:52:52,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 548 transitions. [2022-01-19 00:52:52,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:52,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:52,689 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:52,689 INFO L186 Difference]: Start difference. First operand has 265 places, 363 transitions, 7635 flow. Second operand 5 states and 548 transitions. [2022-01-19 00:52:52,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 389 transitions, 8607 flow [2022-01-19 00:52:52,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 389 transitions, 8506 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-01-19 00:52:52,844 INFO L242 Difference]: Finished difference. Result has 270 places, 365 transitions, 7874 flow [2022-01-19 00:52:52,844 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7492, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7874, PETRI_PLACES=270, PETRI_TRANSITIONS=365} [2022-01-19 00:52:52,844 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 158 predicate places. [2022-01-19 00:52:52,845 INFO L470 AbstractCegarLoop]: Abstraction has has 270 places, 365 transitions, 7874 flow [2022-01-19 00:52:52,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:52,845 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:52,845 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:52:52,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-19 00:52:52,845 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:52:52,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:52,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1746066995, now seen corresponding path program 8 times [2022-01-19 00:52:52,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:52,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653402785] [2022-01-19 00:52:52,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:52,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:52,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:52:52,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:52:52,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:52:52,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653402785] [2022-01-19 00:52:52,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653402785] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:52:52,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:52:52,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:52:52,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552729643] [2022-01-19 00:52:52,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:52:52,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:52:52,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:52:52,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:52:52,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:52:52,895 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:52:52,895 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 365 transitions, 7874 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:52,895 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:52:52,895 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:52:52,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:52:53,552 INFO L129 PetriNetUnfolder]: 677/5138 cut-off events. [2022-01-19 00:52:53,552 INFO L130 PetriNetUnfolder]: For 42257/42448 co-relation queries the response was YES. [2022-01-19 00:52:53,593 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16655 conditions, 5138 events. 677/5138 cut-off events. For 42257/42448 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 61082 event pairs, 181 based on Foata normal form. 54/4961 useless extension candidates. Maximal degree in co-relation 15533. Up to 531 conditions per place. [2022-01-19 00:52:53,605 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 208 selfloop transitions, 81 changer transitions 1/382 dead transitions. [2022-01-19 00:52:53,605 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 382 transitions, 8554 flow [2022-01-19 00:52:53,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:52:53,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:52:53,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 548 transitions. [2022-01-19 00:52:53,613 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8838709677419355 [2022-01-19 00:52:53,613 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 548 transitions. [2022-01-19 00:52:53,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 548 transitions. [2022-01-19 00:52:53,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:52:53,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 548 transitions. [2022-01-19 00:52:53,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:53,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:53,614 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:53,614 INFO L186 Difference]: Start difference. First operand has 270 places, 365 transitions, 7874 flow. Second operand 5 states and 548 transitions. [2022-01-19 00:52:53,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 382 transitions, 8554 flow [2022-01-19 00:52:53,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 382 transitions, 8515 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-01-19 00:52:53,802 INFO L242 Difference]: Finished difference. Result has 273 places, 363 transitions, 7910 flow [2022-01-19 00:52:53,802 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7792, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7910, PETRI_PLACES=273, PETRI_TRANSITIONS=363} [2022-01-19 00:52:53,803 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 161 predicate places. [2022-01-19 00:52:53,803 INFO L470 AbstractCegarLoop]: Abstraction has has 273 places, 363 transitions, 7910 flow [2022-01-19 00:52:53,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:53,803 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:53,803 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:52:53,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-19 00:52:53,803 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:52:53,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:53,804 INFO L85 PathProgramCache]: Analyzing trace with hash -151886183, now seen corresponding path program 3 times [2022-01-19 00:52:53,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:53,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592612890] [2022-01-19 00:52:53,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:53,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:52:53,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:52:53,874 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:52:53,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592612890] [2022-01-19 00:52:53,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592612890] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:52:53,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:52:53,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:52:53,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586676230] [2022-01-19 00:52:53,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:52:53,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:52:53,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:52:53,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:52:53,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:52:53,875 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:52:53,876 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 363 transitions, 7910 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:53,876 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:52:53,876 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:52:53,876 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:52:54,638 INFO L129 PetriNetUnfolder]: 724/5576 cut-off events. [2022-01-19 00:52:54,638 INFO L130 PetriNetUnfolder]: For 43940/44154 co-relation queries the response was YES. [2022-01-19 00:52:54,681 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17948 conditions, 5576 events. 724/5576 cut-off events. For 43940/44154 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 67317 event pairs, 188 based on Foata normal form. 62/5413 useless extension candidates. Maximal degree in co-relation 16811. Up to 596 conditions per place. [2022-01-19 00:52:54,694 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 229 selfloop transitions, 84 changer transitions 3/408 dead transitions. [2022-01-19 00:52:54,694 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 408 transitions, 9297 flow [2022-01-19 00:52:54,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 00:52:54,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 00:52:54,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 657 transitions. [2022-01-19 00:52:54,696 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8830645161290323 [2022-01-19 00:52:54,696 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 657 transitions. [2022-01-19 00:52:54,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 657 transitions. [2022-01-19 00:52:54,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:52:54,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 657 transitions. [2022-01-19 00:52:54,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.5) internal successors, (657), 6 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:54,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:54,697 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:54,698 INFO L186 Difference]: Start difference. First operand has 273 places, 363 transitions, 7910 flow. Second operand 6 states and 657 transitions. [2022-01-19 00:52:54,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 408 transitions, 9297 flow [2022-01-19 00:52:54,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 408 transitions, 9147 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-01-19 00:52:54,899 INFO L242 Difference]: Finished difference. Result has 279 places, 378 transitions, 8454 flow [2022-01-19 00:52:54,900 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7768, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8454, PETRI_PLACES=279, PETRI_TRANSITIONS=378} [2022-01-19 00:52:54,900 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 167 predicate places. [2022-01-19 00:52:54,900 INFO L470 AbstractCegarLoop]: Abstraction has has 279 places, 378 transitions, 8454 flow [2022-01-19 00:52:54,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:54,900 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:54,901 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:52:54,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-19 00:52:54,901 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:52:54,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:54,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1123016729, now seen corresponding path program 4 times [2022-01-19 00:52:54,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:54,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281273611] [2022-01-19 00:52:54,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:54,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:52:54,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:52:54,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:52:54,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281273611] [2022-01-19 00:52:54,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281273611] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:52:54,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:52:54,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:52:54,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259781283] [2022-01-19 00:52:54,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:52:54,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:52:54,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:52:54,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:52:54,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:52:54,967 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:52:54,967 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 378 transitions, 8454 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:54,967 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:52:54,967 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:52:54,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:52:55,843 INFO L129 PetriNetUnfolder]: 768/5979 cut-off events. [2022-01-19 00:52:55,843 INFO L130 PetriNetUnfolder]: For 46746/47007 co-relation queries the response was YES. [2022-01-19 00:52:55,881 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18854 conditions, 5979 events. 768/5979 cut-off events. For 46746/47007 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 73077 event pairs, 206 based on Foata normal form. 72/5809 useless extension candidates. Maximal degree in co-relation 17671. Up to 639 conditions per place. [2022-01-19 00:52:55,894 INFO L132 encePairwiseOnDemand]: 114/124 looper letters, 235 selfloop transitions, 89 changer transitions 3/419 dead transitions. [2022-01-19 00:52:55,894 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 419 transitions, 9735 flow [2022-01-19 00:52:55,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 00:52:55,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 00:52:55,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 658 transitions. [2022-01-19 00:52:55,895 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8844086021505376 [2022-01-19 00:52:55,895 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 658 transitions. [2022-01-19 00:52:55,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 658 transitions. [2022-01-19 00:52:55,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:52:55,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 658 transitions. [2022-01-19 00:52:55,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.66666666666667) internal successors, (658), 6 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:55,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:55,898 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:55,898 INFO L186 Difference]: Start difference. First operand has 279 places, 378 transitions, 8454 flow. Second operand 6 states and 658 transitions. [2022-01-19 00:52:55,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 419 transitions, 9735 flow [2022-01-19 00:52:56,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 419 transitions, 9671 flow, removed 8 selfloop flow, removed 1 redundant places. [2022-01-19 00:52:56,129 INFO L242 Difference]: Finished difference. Result has 286 places, 390 transitions, 8964 flow [2022-01-19 00:52:56,130 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8369, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8964, PETRI_PLACES=286, PETRI_TRANSITIONS=390} [2022-01-19 00:52:56,130 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 174 predicate places. [2022-01-19 00:52:56,130 INFO L470 AbstractCegarLoop]: Abstraction has has 286 places, 390 transitions, 8964 flow [2022-01-19 00:52:56,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:56,130 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:56,130 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:52:56,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-19 00:52:56,131 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:52:56,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:56,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1826253479, now seen corresponding path program 5 times [2022-01-19 00:52:56,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:56,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988630672] [2022-01-19 00:52:56,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:56,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:56,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:52:56,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:52:56,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:52:56,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988630672] [2022-01-19 00:52:56,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988630672] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:52:56,205 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:52:56,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:52:56,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880795984] [2022-01-19 00:52:56,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:52:56,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:52:56,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:52:56,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:52:56,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:52:56,206 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:52:56,207 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 390 transitions, 8964 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:56,207 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:52:56,207 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:52:56,207 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:52:57,135 INFO L129 PetriNetUnfolder]: 767/6094 cut-off events. [2022-01-19 00:52:57,136 INFO L130 PetriNetUnfolder]: For 49310/49578 co-relation queries the response was YES. [2022-01-19 00:52:57,193 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19264 conditions, 6094 events. 767/6094 cut-off events. For 49310/49578 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 75184 event pairs, 249 based on Foata normal form. 71/5911 useless extension candidates. Maximal degree in co-relation 18071. Up to 864 conditions per place. [2022-01-19 00:52:57,209 INFO L132 encePairwiseOnDemand]: 117/124 looper letters, 270 selfloop transitions, 44 changer transitions 2/408 dead transitions. [2022-01-19 00:52:57,209 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 408 transitions, 9763 flow [2022-01-19 00:52:57,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:52:57,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:52:57,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 538 transitions. [2022-01-19 00:52:57,210 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.867741935483871 [2022-01-19 00:52:57,210 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 538 transitions. [2022-01-19 00:52:57,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 538 transitions. [2022-01-19 00:52:57,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:52:57,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 538 transitions. [2022-01-19 00:52:57,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.6) internal successors, (538), 5 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:57,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:57,212 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:57,212 INFO L186 Difference]: Start difference. First operand has 286 places, 390 transitions, 8964 flow. Second operand 5 states and 538 transitions. [2022-01-19 00:52:57,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 408 transitions, 9763 flow [2022-01-19 00:52:57,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 408 transitions, 9749 flow, removed 7 selfloop flow, removed 0 redundant places. [2022-01-19 00:52:57,486 INFO L242 Difference]: Finished difference. Result has 291 places, 390 transitions, 9054 flow [2022-01-19 00:52:57,486 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8910, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=9054, PETRI_PLACES=291, PETRI_TRANSITIONS=390} [2022-01-19 00:52:57,486 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 179 predicate places. [2022-01-19 00:52:57,486 INFO L470 AbstractCegarLoop]: Abstraction has has 291 places, 390 transitions, 9054 flow [2022-01-19 00:52:57,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:57,487 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:57,487 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:52:57,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-19 00:52:57,487 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:52:57,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:57,487 INFO L85 PathProgramCache]: Analyzing trace with hash 899180921, now seen corresponding path program 4 times [2022-01-19 00:52:57,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:57,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917602843] [2022-01-19 00:52:57,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:57,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:52:57,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:52:57,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:52:57,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917602843] [2022-01-19 00:52:57,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917602843] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:52:57,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:52:57,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:52:57,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188521902] [2022-01-19 00:52:57,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:52:57,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:52:57,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:52:57,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:52:57,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:52:57,546 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:52:57,546 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 390 transitions, 9054 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:57,546 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:52:57,546 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:52:57,547 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:52:58,366 INFO L129 PetriNetUnfolder]: 740/5853 cut-off events. [2022-01-19 00:52:58,366 INFO L130 PetriNetUnfolder]: For 51735/51999 co-relation queries the response was YES. [2022-01-19 00:52:58,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18866 conditions, 5853 events. 740/5853 cut-off events. For 51735/51999 co-relation queries the response was YES. Maximal size of possible extension queue 457. Compared 71719 event pairs, 225 based on Foata normal form. 69/5669 useless extension candidates. Maximal degree in co-relation 17671. Up to 562 conditions per place. [2022-01-19 00:52:58,436 INFO L132 encePairwiseOnDemand]: 114/124 looper letters, 245 selfloop transitions, 70 changer transitions 2/409 dead transitions. [2022-01-19 00:52:58,436 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 409 transitions, 9882 flow [2022-01-19 00:52:58,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:52:58,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:52:58,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 542 transitions. [2022-01-19 00:52:58,437 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8741935483870967 [2022-01-19 00:52:58,437 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 542 transitions. [2022-01-19 00:52:58,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 542 transitions. [2022-01-19 00:52:58,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:52:58,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 542 transitions. [2022-01-19 00:52:58,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.4) internal successors, (542), 5 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:58,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:58,439 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:58,439 INFO L186 Difference]: Start difference. First operand has 291 places, 390 transitions, 9054 flow. Second operand 5 states and 542 transitions. [2022-01-19 00:52:58,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 409 transitions, 9882 flow [2022-01-19 00:52:58,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 409 transitions, 9861 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 00:52:58,692 INFO L242 Difference]: Finished difference. Result has 295 places, 390 transitions, 9223 flow [2022-01-19 00:52:58,693 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8993, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=9223, PETRI_PLACES=295, PETRI_TRANSITIONS=390} [2022-01-19 00:52:58,693 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 183 predicate places. [2022-01-19 00:52:58,693 INFO L470 AbstractCegarLoop]: Abstraction has has 295 places, 390 transitions, 9223 flow [2022-01-19 00:52:58,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:58,693 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:58,693 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:52:58,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-19 00:52:58,693 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:52:58,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:58,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1814977475, now seen corresponding path program 9 times [2022-01-19 00:52:58,694 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:58,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867781262] [2022-01-19 00:52:58,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:58,694 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:58,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:52:58,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:52:58,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:52:58,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867781262] [2022-01-19 00:52:58,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867781262] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:52:58,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:52:58,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:52:58,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127801002] [2022-01-19 00:52:58,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:52:58,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:52:58,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:52:58,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:52:58,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:52:58,733 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:52:58,733 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 390 transitions, 9223 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:58,733 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:52:58,733 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:52:58,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:52:59,576 INFO L129 PetriNetUnfolder]: 760/6040 cut-off events. [2022-01-19 00:52:59,577 INFO L130 PetriNetUnfolder]: For 54023/54293 co-relation queries the response was YES. [2022-01-19 00:52:59,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19429 conditions, 6040 events. 760/6040 cut-off events. For 54023/54293 co-relation queries the response was YES. Maximal size of possible extension queue 458. Compared 74288 event pairs, 198 based on Foata normal form. 72/5867 useless extension candidates. Maximal degree in co-relation 18233. Up to 627 conditions per place. [2022-01-19 00:52:59,650 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 244 selfloop transitions, 90 changer transitions 6/432 dead transitions. [2022-01-19 00:52:59,650 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 432 transitions, 10636 flow [2022-01-19 00:52:59,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 00:52:59,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 00:52:59,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 660 transitions. [2022-01-19 00:52:59,651 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8870967741935484 [2022-01-19 00:52:59,651 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 660 transitions. [2022-01-19 00:52:59,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 660 transitions. [2022-01-19 00:52:59,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:52:59,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 660 transitions. [2022-01-19 00:52:59,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.0) internal successors, (660), 6 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:59,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:59,653 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:59,653 INFO L186 Difference]: Start difference. First operand has 295 places, 390 transitions, 9223 flow. Second operand 6 states and 660 transitions. [2022-01-19 00:52:59,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 432 transitions, 10636 flow [2022-01-19 00:52:59,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 432 transitions, 10542 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 00:52:59,929 INFO L242 Difference]: Finished difference. Result has 301 places, 403 transitions, 9843 flow [2022-01-19 00:52:59,930 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9098, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=9843, PETRI_PLACES=301, PETRI_TRANSITIONS=403} [2022-01-19 00:52:59,930 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 189 predicate places. [2022-01-19 00:52:59,930 INFO L470 AbstractCegarLoop]: Abstraction has has 301 places, 403 transitions, 9843 flow [2022-01-19 00:52:59,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:52:59,930 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:52:59,931 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:52:59,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-19 00:52:59,931 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:52:59,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:52:59,931 INFO L85 PathProgramCache]: Analyzing trace with hash 216516765, now seen corresponding path program 5 times [2022-01-19 00:52:59,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:52:59,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949386662] [2022-01-19 00:52:59,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:52:59,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:52:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:00,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:53:00,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:00,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949386662] [2022-01-19 00:53:00,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949386662] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:00,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:00,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:53:00,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11712530] [2022-01-19 00:53:00,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:00,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:53:00,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:00,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:53:00,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:53:00,005 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:53:00,005 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 403 transitions, 9843 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:00,005 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:00,005 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:53:00,005 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:00,844 INFO L129 PetriNetUnfolder]: 755/5952 cut-off events. [2022-01-19 00:53:00,844 INFO L130 PetriNetUnfolder]: For 52888/53167 co-relation queries the response was YES. [2022-01-19 00:53:00,900 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19477 conditions, 5952 events. 755/5952 cut-off events. For 52888/53167 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 72865 event pairs, 156 based on Foata normal form. 72/5765 useless extension candidates. Maximal degree in co-relation 18260. Up to 818 conditions per place. [2022-01-19 00:53:00,914 INFO L132 encePairwiseOnDemand]: 116/124 looper letters, 272 selfloop transitions, 54 changer transitions 0/418 dead transitions. [2022-01-19 00:53:00,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 418 transitions, 10650 flow [2022-01-19 00:53:00,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:53:00,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:53:00,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 538 transitions. [2022-01-19 00:53:00,916 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.867741935483871 [2022-01-19 00:53:00,916 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 538 transitions. [2022-01-19 00:53:00,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 538 transitions. [2022-01-19 00:53:00,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:00,916 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 538 transitions. [2022-01-19 00:53:00,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.6) internal successors, (538), 5 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:00,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:00,917 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:00,917 INFO L186 Difference]: Start difference. First operand has 301 places, 403 transitions, 9843 flow. Second operand 5 states and 538 transitions. [2022-01-19 00:53:00,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 418 transitions, 10650 flow [2022-01-19 00:53:01,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 418 transitions, 10604 flow, removed 23 selfloop flow, removed 0 redundant places. [2022-01-19 00:53:01,199 INFO L242 Difference]: Finished difference. Result has 306 places, 406 transitions, 10003 flow [2022-01-19 00:53:01,199 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9759, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10003, PETRI_PLACES=306, PETRI_TRANSITIONS=406} [2022-01-19 00:53:01,200 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 194 predicate places. [2022-01-19 00:53:01,200 INFO L470 AbstractCegarLoop]: Abstraction has has 306 places, 406 transitions, 10003 flow [2022-01-19 00:53:01,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:01,200 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:01,200 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:53:01,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-19 00:53:01,200 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:01,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:01,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1228147129, now seen corresponding path program 6 times [2022-01-19 00:53:01,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:01,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389373355] [2022-01-19 00:53:01,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:01,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:01,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:53:01,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:01,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389373355] [2022-01-19 00:53:01,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389373355] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:01,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:01,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:53:01,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701182309] [2022-01-19 00:53:01,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:01,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:53:01,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:01,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:53:01,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:53:01,245 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:53:01,245 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 406 transitions, 10003 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:01,245 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:01,245 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:53:01,246 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:02,184 INFO L129 PetriNetUnfolder]: 744/5959 cut-off events. [2022-01-19 00:53:02,184 INFO L130 PetriNetUnfolder]: For 54521/54785 co-relation queries the response was YES. [2022-01-19 00:53:02,245 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19547 conditions, 5959 events. 744/5959 cut-off events. For 54521/54785 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 73103 event pairs, 201 based on Foata normal form. 69/5777 useless extension candidates. Maximal degree in co-relation 18329. Up to 627 conditions per place. [2022-01-19 00:53:02,258 INFO L132 encePairwiseOnDemand]: 116/124 looper letters, 260 selfloop transitions, 71 changer transitions 0/423 dead transitions. [2022-01-19 00:53:02,258 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 423 transitions, 10814 flow [2022-01-19 00:53:02,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:53:02,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:53:02,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 541 transitions. [2022-01-19 00:53:02,259 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8725806451612903 [2022-01-19 00:53:02,259 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 541 transitions. [2022-01-19 00:53:02,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 541 transitions. [2022-01-19 00:53:02,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:02,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 541 transitions. [2022-01-19 00:53:02,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:02,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:02,261 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:02,261 INFO L186 Difference]: Start difference. First operand has 306 places, 406 transitions, 10003 flow. Second operand 5 states and 541 transitions. [2022-01-19 00:53:02,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 423 transitions, 10814 flow [2022-01-19 00:53:02,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 423 transitions, 10769 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-01-19 00:53:02,532 INFO L242 Difference]: Finished difference. Result has 310 places, 407 transitions, 10148 flow [2022-01-19 00:53:02,532 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9926, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10148, PETRI_PLACES=310, PETRI_TRANSITIONS=407} [2022-01-19 00:53:02,532 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 198 predicate places. [2022-01-19 00:53:02,533 INFO L470 AbstractCegarLoop]: Abstraction has has 310 places, 407 transitions, 10148 flow [2022-01-19 00:53:02,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:02,533 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:02,533 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] [2022-01-19 00:53:02,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-19 00:53:02,533 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:02,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:02,533 INFO L85 PathProgramCache]: Analyzing trace with hash 947096267, now seen corresponding path program 6 times [2022-01-19 00:53:02,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:02,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067192351] [2022-01-19 00:53:02,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:02,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:02,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:53:02,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:02,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067192351] [2022-01-19 00:53:02,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067192351] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:02,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:02,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:53:02,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549095673] [2022-01-19 00:53:02,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:02,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:53:02,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:02,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:53:02,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:53:02,585 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:53:02,585 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 407 transitions, 10148 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:02,585 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:02,585 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:53:02,585 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:03,476 INFO L129 PetriNetUnfolder]: 738/5957 cut-off events. [2022-01-19 00:53:03,476 INFO L130 PetriNetUnfolder]: For 59717/59974 co-relation queries the response was YES. [2022-01-19 00:53:03,536 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19605 conditions, 5957 events. 738/5957 cut-off events. For 59717/59974 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 73194 event pairs, 186 based on Foata normal form. 70/5796 useless extension candidates. Maximal degree in co-relation 18402. Up to 600 conditions per place. [2022-01-19 00:53:03,551 INFO L132 encePairwiseOnDemand]: 110/124 looper letters, 237 selfloop transitions, 97 changer transitions 2/428 dead transitions. [2022-01-19 00:53:03,552 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 428 transitions, 10938 flow [2022-01-19 00:53:03,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 00:53:03,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 00:53:03,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 659 transitions. [2022-01-19 00:53:03,553 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.885752688172043 [2022-01-19 00:53:03,553 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 659 transitions. [2022-01-19 00:53:03,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 659 transitions. [2022-01-19 00:53:03,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:03,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 659 transitions. [2022-01-19 00:53:03,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.83333333333333) internal successors, (659), 6 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:03,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:03,554 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:03,554 INFO L186 Difference]: Start difference. First operand has 310 places, 407 transitions, 10148 flow. Second operand 6 states and 659 transitions. [2022-01-19 00:53:03,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 428 transitions, 10938 flow [2022-01-19 00:53:03,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 428 transitions, 10880 flow, removed 13 selfloop flow, removed 1 redundant places. [2022-01-19 00:53:03,877 INFO L242 Difference]: Finished difference. Result has 314 places, 405 transitions, 10205 flow [2022-01-19 00:53:03,877 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10046, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=10205, PETRI_PLACES=314, PETRI_TRANSITIONS=405} [2022-01-19 00:53:03,877 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 202 predicate places. [2022-01-19 00:53:03,878 INFO L470 AbstractCegarLoop]: Abstraction has has 314 places, 405 transitions, 10205 flow [2022-01-19 00:53:03,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:03,878 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:03,878 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:53:03,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-19 00:53:03,878 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:03,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:03,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1895957427, now seen corresponding path program 7 times [2022-01-19 00:53:03,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:03,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103654268] [2022-01-19 00:53:03,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:03,879 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:03,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:03,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:53:03,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:03,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103654268] [2022-01-19 00:53:03,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103654268] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:03,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:03,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:53:03,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785384560] [2022-01-19 00:53:03,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:03,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:53:03,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:03,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:53:03,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:53:03,945 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:53:03,946 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 405 transitions, 10205 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:03,946 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:03,946 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:53:03,946 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:04,878 INFO L129 PetriNetUnfolder]: 771/6144 cut-off events. [2022-01-19 00:53:04,878 INFO L130 PetriNetUnfolder]: For 57411/57728 co-relation queries the response was YES. [2022-01-19 00:53:04,923 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20163 conditions, 6144 events. 771/6144 cut-off events. For 57411/57728 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 75888 event pairs, 202 based on Foata normal form. 79/5960 useless extension candidates. Maximal degree in co-relation 18934. Up to 610 conditions per place. [2022-01-19 00:53:04,936 INFO L132 encePairwiseOnDemand]: 114/124 looper letters, 259 selfloop transitions, 82 changer transitions 1/434 dead transitions. [2022-01-19 00:53:04,936 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 434 transitions, 11421 flow [2022-01-19 00:53:04,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:53:04,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:53:04,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 546 transitions. [2022-01-19 00:53:04,937 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8806451612903226 [2022-01-19 00:53:04,937 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 546 transitions. [2022-01-19 00:53:04,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 546 transitions. [2022-01-19 00:53:04,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:04,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 546 transitions. [2022-01-19 00:53:04,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:04,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:04,938 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:04,939 INFO L186 Difference]: Start difference. First operand has 314 places, 405 transitions, 10205 flow. Second operand 5 states and 546 transitions. [2022-01-19 00:53:04,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 434 transitions, 11421 flow [2022-01-19 00:53:05,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 434 transitions, 11324 flow, removed 12 selfloop flow, removed 2 redundant places. [2022-01-19 00:53:05,219 INFO L242 Difference]: Finished difference. Result has 318 places, 411 transitions, 10627 flow [2022-01-19 00:53:05,219 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10078, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10627, PETRI_PLACES=318, PETRI_TRANSITIONS=411} [2022-01-19 00:53:05,220 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 206 predicate places. [2022-01-19 00:53:05,220 INFO L470 AbstractCegarLoop]: Abstraction has has 318 places, 411 transitions, 10627 flow [2022-01-19 00:53:05,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:05,220 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:05,220 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:53:05,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-19 00:53:05,220 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:05,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:05,221 INFO L85 PathProgramCache]: Analyzing trace with hash 247948725, now seen corresponding path program 7 times [2022-01-19 00:53:05,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:05,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023384771] [2022-01-19 00:53:05,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:05,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:05,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:53:05,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:05,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023384771] [2022-01-19 00:53:05,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023384771] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:05,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:05,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:53:05,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792549984] [2022-01-19 00:53:05,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:05,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:53:05,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:05,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:53:05,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:53:05,272 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:53:05,272 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 411 transitions, 10627 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:05,272 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:05,272 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:53:05,272 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:06,185 INFO L129 PetriNetUnfolder]: 783/6266 cut-off events. [2022-01-19 00:53:06,185 INFO L130 PetriNetUnfolder]: For 64617/64945 co-relation queries the response was YES. [2022-01-19 00:53:06,282 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20687 conditions, 6266 events. 783/6266 cut-off events. For 64617/64945 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 77986 event pairs, 213 based on Foata normal form. 94/6098 useless extension candidates. Maximal degree in co-relation 19491. Up to 635 conditions per place. [2022-01-19 00:53:06,304 INFO L132 encePairwiseOnDemand]: 109/124 looper letters, 250 selfloop transitions, 88 changer transitions 6/436 dead transitions. [2022-01-19 00:53:06,304 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 436 transitions, 11625 flow [2022-01-19 00:53:06,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:53:06,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:53:06,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 553 transitions. [2022-01-19 00:53:06,305 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8919354838709678 [2022-01-19 00:53:06,306 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 553 transitions. [2022-01-19 00:53:06,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 553 transitions. [2022-01-19 00:53:06,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:06,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 553 transitions. [2022-01-19 00:53:06,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.6) internal successors, (553), 5 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:06,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:06,307 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:06,307 INFO L186 Difference]: Start difference. First operand has 318 places, 411 transitions, 10627 flow. Second operand 5 states and 553 transitions. [2022-01-19 00:53:06,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 436 transitions, 11625 flow [2022-01-19 00:53:06,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 436 transitions, 11558 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-01-19 00:53:06,654 INFO L242 Difference]: Finished difference. Result has 323 places, 410 transitions, 10766 flow [2022-01-19 00:53:06,655 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10343, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10766, PETRI_PLACES=323, PETRI_TRANSITIONS=410} [2022-01-19 00:53:06,655 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 211 predicate places. [2022-01-19 00:53:06,655 INFO L470 AbstractCegarLoop]: Abstraction has has 323 places, 410 transitions, 10766 flow [2022-01-19 00:53:06,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:06,655 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:06,656 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:53:06,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-19 00:53:06,656 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:06,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:06,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1382150905, now seen corresponding path program 8 times [2022-01-19 00:53:06,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:06,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000078515] [2022-01-19 00:53:06,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:06,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:06,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:06,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:53:06,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:06,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000078515] [2022-01-19 00:53:06,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000078515] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:06,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:06,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:53:06,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857591671] [2022-01-19 00:53:06,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:06,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:53:06,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:06,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:53:06,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:53:06,724 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:53:06,724 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 410 transitions, 10766 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:06,725 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:06,725 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:53:06,725 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:07,666 INFO L129 PetriNetUnfolder]: 756/6078 cut-off events. [2022-01-19 00:53:07,667 INFO L130 PetriNetUnfolder]: For 64566/64874 co-relation queries the response was YES. [2022-01-19 00:53:07,711 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20354 conditions, 6078 events. 756/6078 cut-off events. For 64566/64874 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 75360 event pairs, 216 based on Foata normal form. 77/5903 useless extension candidates. Maximal degree in co-relation 19153. Up to 598 conditions per place. [2022-01-19 00:53:07,724 INFO L132 encePairwiseOnDemand]: 114/124 looper letters, 257 selfloop transitions, 79 changer transitions 1/429 dead transitions. [2022-01-19 00:53:07,724 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 429 transitions, 11601 flow [2022-01-19 00:53:07,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:53:07,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:53:07,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 551 transitions. [2022-01-19 00:53:07,725 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8887096774193548 [2022-01-19 00:53:07,725 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 551 transitions. [2022-01-19 00:53:07,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 551 transitions. [2022-01-19 00:53:07,725 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:07,725 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 551 transitions. [2022-01-19 00:53:07,726 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.2) internal successors, (551), 5 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:07,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:07,726 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:07,726 INFO L186 Difference]: Start difference. First operand has 323 places, 410 transitions, 10766 flow. Second operand 5 states and 551 transitions. [2022-01-19 00:53:07,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 429 transitions, 11601 flow [2022-01-19 00:53:08,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 429 transitions, 11445 flow, removed 21 selfloop flow, removed 3 redundant places. [2022-01-19 00:53:08,048 INFO L242 Difference]: Finished difference. Result has 324 places, 408 transitions, 10675 flow [2022-01-19 00:53:08,048 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10567, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10675, PETRI_PLACES=324, PETRI_TRANSITIONS=408} [2022-01-19 00:53:08,048 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 212 predicate places. [2022-01-19 00:53:08,048 INFO L470 AbstractCegarLoop]: Abstraction has has 324 places, 408 transitions, 10675 flow [2022-01-19 00:53:08,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:08,049 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:08,049 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] [2022-01-19 00:53:08,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-19 00:53:08,049 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:08,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:08,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1751579267, now seen corresponding path program 8 times [2022-01-19 00:53:08,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:08,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665359569] [2022-01-19 00:53:08,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:08,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:08,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:53:08,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:08,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665359569] [2022-01-19 00:53:08,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665359569] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:08,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:08,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:53:08,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91866010] [2022-01-19 00:53:08,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:08,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:53:08,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:08,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:53:08,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:53:08,104 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:53:08,104 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 408 transitions, 10675 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:08,104 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:08,104 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:53:08,104 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:09,062 INFO L129 PetriNetUnfolder]: 775/6239 cut-off events. [2022-01-19 00:53:09,062 INFO L130 PetriNetUnfolder]: For 61336/61665 co-relation queries the response was YES. [2022-01-19 00:53:09,125 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20634 conditions, 6239 events. 775/6239 cut-off events. For 61336/61665 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 77376 event pairs, 204 based on Foata normal form. 80/6053 useless extension candidates. Maximal degree in co-relation 19472. Up to 626 conditions per place. [2022-01-19 00:53:09,141 INFO L132 encePairwiseOnDemand]: 110/124 looper letters, 247 selfloop transitions, 89 changer transitions 0/428 dead transitions. [2022-01-19 00:53:09,141 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 428 transitions, 11591 flow [2022-01-19 00:53:09,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:53:09,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:53:09,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 546 transitions. [2022-01-19 00:53:09,142 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8806451612903226 [2022-01-19 00:53:09,142 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 546 transitions. [2022-01-19 00:53:09,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 546 transitions. [2022-01-19 00:53:09,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:09,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 546 transitions. [2022-01-19 00:53:09,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:09,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:09,143 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:09,143 INFO L186 Difference]: Start difference. First operand has 324 places, 408 transitions, 10675 flow. Second operand 5 states and 546 transitions. [2022-01-19 00:53:09,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 428 transitions, 11591 flow [2022-01-19 00:53:09,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 428 transitions, 11467 flow, removed 23 selfloop flow, removed 4 redundant places. [2022-01-19 00:53:09,514 INFO L242 Difference]: Finished difference. Result has 325 places, 410 transitions, 10866 flow [2022-01-19 00:53:09,515 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10508, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10866, PETRI_PLACES=325, PETRI_TRANSITIONS=410} [2022-01-19 00:53:09,515 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 213 predicate places. [2022-01-19 00:53:09,515 INFO L470 AbstractCegarLoop]: Abstraction has has 325 places, 410 transitions, 10866 flow [2022-01-19 00:53:09,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:09,516 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:09,516 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:53:09,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-19 00:53:09,516 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:09,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:09,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1641676151, now seen corresponding path program 10 times [2022-01-19 00:53:09,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:09,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675502870] [2022-01-19 00:53:09,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:09,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:09,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:53:09,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:09,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675502870] [2022-01-19 00:53:09,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675502870] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:09,577 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:09,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:53:09,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434200615] [2022-01-19 00:53:09,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:09,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:53:09,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:09,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:53:09,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:53:09,579 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:53:09,579 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 410 transitions, 10866 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:09,579 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:09,579 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:53:09,579 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:10,643 INFO L129 PetriNetUnfolder]: 777/6348 cut-off events. [2022-01-19 00:53:10,644 INFO L130 PetriNetUnfolder]: For 67814/68108 co-relation queries the response was YES. [2022-01-19 00:53:10,708 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21027 conditions, 6348 events. 777/6348 cut-off events. For 67814/68108 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 79249 event pairs, 225 based on Foata normal form. 90/6163 useless extension candidates. Maximal degree in co-relation 19660. Up to 649 conditions per place. [2022-01-19 00:53:10,724 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 265 selfloop transitions, 85 changer transitions 2/444 dead transitions. [2022-01-19 00:53:10,725 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 444 transitions, 12409 flow [2022-01-19 00:53:10,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:53:10,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:53:10,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 553 transitions. [2022-01-19 00:53:10,726 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8919354838709678 [2022-01-19 00:53:10,726 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 553 transitions. [2022-01-19 00:53:10,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 553 transitions. [2022-01-19 00:53:10,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:10,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 553 transitions. [2022-01-19 00:53:10,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.6) internal successors, (553), 5 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:10,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:10,727 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:10,727 INFO L186 Difference]: Start difference. First operand has 325 places, 410 transitions, 10866 flow. Second operand 5 states and 553 transitions. [2022-01-19 00:53:10,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 444 transitions, 12409 flow [2022-01-19 00:53:11,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 444 transitions, 12241 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 00:53:11,069 INFO L242 Difference]: Finished difference. Result has 329 places, 414 transitions, 11256 flow [2022-01-19 00:53:11,069 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10582, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=11256, PETRI_PLACES=329, PETRI_TRANSITIONS=414} [2022-01-19 00:53:11,070 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 217 predicate places. [2022-01-19 00:53:11,070 INFO L470 AbstractCegarLoop]: Abstraction has has 329 places, 414 transitions, 11256 flow [2022-01-19 00:53:11,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:11,070 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:11,070 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] [2022-01-19 00:53:11,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-19 00:53:11,070 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:11,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:11,071 INFO L85 PathProgramCache]: Analyzing trace with hash -892420571, now seen corresponding path program 10 times [2022-01-19 00:53:11,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:11,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083717460] [2022-01-19 00:53:11,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:11,071 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:11,126 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 00:53:11,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:11,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083717460] [2022-01-19 00:53:11,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083717460] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:11,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:11,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:53:11,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518934548] [2022-01-19 00:53:11,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:11,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:53:11,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:11,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:53:11,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:53:11,128 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:53:11,128 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 414 transitions, 11256 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:11,129 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:11,129 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:53:11,129 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:12,192 INFO L129 PetriNetUnfolder]: 802/6544 cut-off events. [2022-01-19 00:53:12,192 INFO L130 PetriNetUnfolder]: For 71410/71727 co-relation queries the response was YES. [2022-01-19 00:53:12,256 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21929 conditions, 6544 events. 802/6544 cut-off events. For 71410/71727 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 82364 event pairs, 256 based on Foata normal form. 80/6341 useless extension candidates. Maximal degree in co-relation 20453. Up to 662 conditions per place. [2022-01-19 00:53:12,273 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 275 selfloop transitions, 86 changer transitions 1/454 dead transitions. [2022-01-19 00:53:12,273 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 454 transitions, 12889 flow [2022-01-19 00:53:12,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:53:12,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:53:12,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 549 transitions. [2022-01-19 00:53:12,274 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.885483870967742 [2022-01-19 00:53:12,274 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 549 transitions. [2022-01-19 00:53:12,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 549 transitions. [2022-01-19 00:53:12,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:12,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 549 transitions. [2022-01-19 00:53:12,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.8) internal successors, (549), 5 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:12,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:12,276 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:12,276 INFO L186 Difference]: Start difference. First operand has 329 places, 414 transitions, 11256 flow. Second operand 5 states and 549 transitions. [2022-01-19 00:53:12,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 454 transitions, 12889 flow [2022-01-19 00:53:12,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 454 transitions, 12827 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 00:53:12,651 INFO L242 Difference]: Finished difference. Result has 336 places, 430 transitions, 12154 flow [2022-01-19 00:53:12,652 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11156, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12154, PETRI_PLACES=336, PETRI_TRANSITIONS=430} [2022-01-19 00:53:12,652 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 224 predicate places. [2022-01-19 00:53:12,652 INFO L470 AbstractCegarLoop]: Abstraction has has 336 places, 430 transitions, 12154 flow [2022-01-19 00:53:12,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:12,652 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:12,653 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:53:12,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-19 00:53:12,653 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:12,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:12,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1390556285, now seen corresponding path program 11 times [2022-01-19 00:53:12,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:12,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205151079] [2022-01-19 00:53:12,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:12,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:12,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:53:12,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:12,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205151079] [2022-01-19 00:53:12,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205151079] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:12,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:12,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:53:12,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414930960] [2022-01-19 00:53:12,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:12,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:53:12,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:12,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:53:12,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:53:12,699 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:53:12,700 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 430 transitions, 12154 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:12,700 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:12,700 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:53:12,700 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:13,837 INFO L129 PetriNetUnfolder]: 811/6781 cut-off events. [2022-01-19 00:53:13,837 INFO L130 PetriNetUnfolder]: For 76561/76859 co-relation queries the response was YES. [2022-01-19 00:53:13,884 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22469 conditions, 6781 events. 811/6781 cut-off events. For 76561/76859 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 86124 event pairs, 243 based on Foata normal form. 88/6564 useless extension candidates. Maximal degree in co-relation 20991. Up to 705 conditions per place. [2022-01-19 00:53:13,898 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 280 selfloop transitions, 84 changer transitions 3/459 dead transitions. [2022-01-19 00:53:13,899 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 459 transitions, 13449 flow [2022-01-19 00:53:13,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:53:13,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:53:13,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 553 transitions. [2022-01-19 00:53:13,900 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8919354838709678 [2022-01-19 00:53:13,900 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 553 transitions. [2022-01-19 00:53:13,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 553 transitions. [2022-01-19 00:53:13,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:13,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 553 transitions. [2022-01-19 00:53:13,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.6) internal successors, (553), 5 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:13,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:13,902 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:13,902 INFO L186 Difference]: Start difference. First operand has 336 places, 430 transitions, 12154 flow. Second operand 5 states and 553 transitions. [2022-01-19 00:53:13,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 459 transitions, 13449 flow [2022-01-19 00:53:14,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 459 transitions, 13386 flow, removed 5 selfloop flow, removed 1 redundant places. [2022-01-19 00:53:14,237 INFO L242 Difference]: Finished difference. Result has 342 places, 435 transitions, 12688 flow [2022-01-19 00:53:14,238 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11944, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12688, PETRI_PLACES=342, PETRI_TRANSITIONS=435} [2022-01-19 00:53:14,238 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 230 predicate places. [2022-01-19 00:53:14,238 INFO L470 AbstractCegarLoop]: Abstraction has has 342 places, 435 transitions, 12688 flow [2022-01-19 00:53:14,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:14,238 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:14,239 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:53:14,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-19 00:53:14,239 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:14,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:14,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1855961239, now seen corresponding path program 12 times [2022-01-19 00:53:14,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:14,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062309037] [2022-01-19 00:53:14,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:14,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:14,277 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 00:53:14,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:14,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062309037] [2022-01-19 00:53:14,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062309037] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:14,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:14,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:53:14,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644711996] [2022-01-19 00:53:14,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:14,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:53:14,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:14,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:53:14,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:53:14,278 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:53:14,279 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 435 transitions, 12688 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:14,279 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:14,279 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:53:14,279 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:15,363 INFO L129 PetriNetUnfolder]: 812/6736 cut-off events. [2022-01-19 00:53:15,363 INFO L130 PetriNetUnfolder]: For 76707/77021 co-relation queries the response was YES. [2022-01-19 00:53:15,435 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22631 conditions, 6736 events. 812/6736 cut-off events. For 76707/77021 co-relation queries the response was YES. Maximal size of possible extension queue 518. Compared 85229 event pairs, 251 based on Foata normal form. 80/6513 useless extension candidates. Maximal degree in co-relation 21150. Up to 698 conditions per place. [2022-01-19 00:53:15,452 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 261 selfloop transitions, 100 changer transitions 3/456 dead transitions. [2022-01-19 00:53:15,452 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 456 transitions, 13563 flow [2022-01-19 00:53:15,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 00:53:15,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 00:53:15,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 653 transitions. [2022-01-19 00:53:15,453 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8776881720430108 [2022-01-19 00:53:15,453 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 653 transitions. [2022-01-19 00:53:15,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 653 transitions. [2022-01-19 00:53:15,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:15,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 653 transitions. [2022-01-19 00:53:15,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 108.83333333333333) internal successors, (653), 6 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:15,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:15,455 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:15,455 INFO L186 Difference]: Start difference. First operand has 342 places, 435 transitions, 12688 flow. Second operand 6 states and 653 transitions. [2022-01-19 00:53:15,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 456 transitions, 13563 flow [2022-01-19 00:53:15,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 456 transitions, 13548 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 00:53:15,856 INFO L242 Difference]: Finished difference. Result has 346 places, 433 transitions, 12759 flow [2022-01-19 00:53:15,856 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=12624, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=335, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=12759, PETRI_PLACES=346, PETRI_TRANSITIONS=433} [2022-01-19 00:53:15,857 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 234 predicate places. [2022-01-19 00:53:15,857 INFO L470 AbstractCegarLoop]: Abstraction has has 346 places, 433 transitions, 12759 flow [2022-01-19 00:53:15,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:15,857 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:15,857 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:53:15,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-19 00:53:15,858 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:15,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:15,858 INFO L85 PathProgramCache]: Analyzing trace with hash -581066469, now seen corresponding path program 11 times [2022-01-19 00:53:15,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:15,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688648824] [2022-01-19 00:53:15,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:15,858 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:15,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:53:15,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:15,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688648824] [2022-01-19 00:53:15,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688648824] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:15,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:15,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 00:53:15,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164241011] [2022-01-19 00:53:15,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:15,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 00:53:15,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:15,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 00:53:15,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 00:53:15,925 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:53:15,925 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 433 transitions, 12759 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:15,925 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:15,925 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:53:15,925 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:17,156 INFO L129 PetriNetUnfolder]: 856/7153 cut-off events. [2022-01-19 00:53:17,156 INFO L130 PetriNetUnfolder]: For 78690/79030 co-relation queries the response was YES. [2022-01-19 00:53:17,205 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23549 conditions, 7153 events. 856/7153 cut-off events. For 78690/79030 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 91471 event pairs, 258 based on Foata normal form. 90/6929 useless extension candidates. Maximal degree in co-relation 22183. Up to 770 conditions per place. [2022-01-19 00:53:17,218 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 272 selfloop transitions, 92 changer transitions 0/456 dead transitions. [2022-01-19 00:53:17,218 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 456 transitions, 13830 flow [2022-01-19 00:53:17,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 00:53:17,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 00:53:17,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 548 transitions. [2022-01-19 00:53:17,219 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8838709677419355 [2022-01-19 00:53:17,219 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 548 transitions. [2022-01-19 00:53:17,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 548 transitions. [2022-01-19 00:53:17,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:17,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 548 transitions. [2022-01-19 00:53:17,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:17,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:17,220 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:17,221 INFO L186 Difference]: Start difference. First operand has 346 places, 433 transitions, 12759 flow. Second operand 5 states and 548 transitions. [2022-01-19 00:53:17,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 456 transitions, 13830 flow [2022-01-19 00:53:17,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 456 transitions, 13592 flow, removed 44 selfloop flow, removed 4 redundant places. [2022-01-19 00:53:17,596 INFO L242 Difference]: Finished difference. Result has 348 places, 438 transitions, 13038 flow [2022-01-19 00:53:17,596 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=12432, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=13038, PETRI_PLACES=348, PETRI_TRANSITIONS=438} [2022-01-19 00:53:17,597 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 236 predicate places. [2022-01-19 00:53:17,597 INFO L470 AbstractCegarLoop]: Abstraction has has 348 places, 438 transitions, 13038 flow [2022-01-19 00:53:17,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:17,597 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:17,597 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:53:17,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-19 00:53:17,597 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:17,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:17,597 INFO L85 PathProgramCache]: Analyzing trace with hash 2128585162, now seen corresponding path program 1 times [2022-01-19 00:53:17,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:17,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94871418] [2022-01-19 00:53:17,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:17,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:17,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:53:17,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:17,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94871418] [2022-01-19 00:53:17,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94871418] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:17,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:17,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 00:53:17,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799399483] [2022-01-19 00:53:17,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:17,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 00:53:17,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:17,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 00:53:17,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-19 00:53:17,644 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:53:17,645 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 438 transitions, 13038 flow. Second operand has 7 states, 7 states have (on average 99.85714285714286) internal successors, (699), 7 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:17,645 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:17,645 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:53:17,645 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:18,696 INFO L129 PetriNetUnfolder]: 562/5490 cut-off events. [2022-01-19 00:53:18,696 INFO L130 PetriNetUnfolder]: For 57435/68368 co-relation queries the response was YES. [2022-01-19 00:53:18,755 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17023 conditions, 5490 events. 562/5490 cut-off events. For 57435/68368 co-relation queries the response was YES. Maximal size of possible extension queue 505. Compared 71859 event pairs, 152 based on Foata normal form. 172/5443 useless extension candidates. Maximal degree in co-relation 15988. Up to 823 conditions per place. [2022-01-19 00:53:18,763 INFO L132 encePairwiseOnDemand]: 116/124 looper letters, 21 selfloop transitions, 0 changer transitions 132/458 dead transitions. [2022-01-19 00:53:18,763 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 458 transitions, 13175 flow [2022-01-19 00:53:18,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 00:53:18,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 00:53:18,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 916 transitions. [2022-01-19 00:53:18,765 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8207885304659498 [2022-01-19 00:53:18,765 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 916 transitions. [2022-01-19 00:53:18,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 916 transitions. [2022-01-19 00:53:18,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:18,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 916 transitions. [2022-01-19 00:53:18,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 101.77777777777777) internal successors, (916), 9 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:18,766 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:18,767 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:18,767 INFO L186 Difference]: Start difference. First operand has 348 places, 438 transitions, 13038 flow. Second operand 9 states and 916 transitions. [2022-01-19 00:53:18,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 458 transitions, 13175 flow [2022-01-19 00:53:19,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 458 transitions, 13111 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-01-19 00:53:19,043 INFO L242 Difference]: Finished difference. Result has 362 places, 326 transitions, 8612 flow [2022-01-19 00:53:19,043 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=12974, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8612, PETRI_PLACES=362, PETRI_TRANSITIONS=326} [2022-01-19 00:53:19,043 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 250 predicate places. [2022-01-19 00:53:19,043 INFO L470 AbstractCegarLoop]: Abstraction has has 362 places, 326 transitions, 8612 flow [2022-01-19 00:53:19,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 99.85714285714286) internal successors, (699), 7 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:19,044 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:19,044 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:53:19,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-19 00:53:19,044 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:19,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:19,044 INFO L85 PathProgramCache]: Analyzing trace with hash -406601066, now seen corresponding path program 1 times [2022-01-19 00:53:19,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:19,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656641340] [2022-01-19 00:53:19,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:19,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:19,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:19,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:53:19,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:19,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656641340] [2022-01-19 00:53:19,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656641340] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:19,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:19,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 00:53:19,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459714797] [2022-01-19 00:53:19,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:19,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 00:53:19,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:19,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 00:53:19,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-19 00:53:19,077 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2022-01-19 00:53:19,077 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 326 transitions, 8612 flow. Second operand has 7 states, 7 states have (on average 99.85714285714286) internal successors, (699), 7 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:19,077 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:19,077 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2022-01-19 00:53:19,077 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:19,703 INFO L129 PetriNetUnfolder]: 396/3568 cut-off events. [2022-01-19 00:53:19,703 INFO L130 PetriNetUnfolder]: For 39922/44131 co-relation queries the response was YES. [2022-01-19 00:53:19,745 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12135 conditions, 3568 events. 396/3568 cut-off events. For 39922/44131 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 43685 event pairs, 83 based on Foata normal form. 148/3587 useless extension candidates. Maximal degree in co-relation 12025. Up to 377 conditions per place. [2022-01-19 00:53:19,748 INFO L132 encePairwiseOnDemand]: 116/124 looper letters, 19 selfloop transitions, 0 changer transitions 172/345 dead transitions. [2022-01-19 00:53:19,748 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 345 transitions, 8753 flow [2022-01-19 00:53:19,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-19 00:53:19,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-01-19 00:53:19,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 914 transitions. [2022-01-19 00:53:19,750 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8189964157706093 [2022-01-19 00:53:19,750 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 914 transitions. [2022-01-19 00:53:19,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 914 transitions. [2022-01-19 00:53:19,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:19,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 914 transitions. [2022-01-19 00:53:19,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 101.55555555555556) internal successors, (914), 9 states have internal predecessors, (914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:19,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:19,752 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 124.0) internal successors, (1240), 10 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:19,752 INFO L186 Difference]: Start difference. First operand has 362 places, 326 transitions, 8612 flow. Second operand 9 states and 914 transitions. [2022-01-19 00:53:19,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 345 transitions, 8753 flow [2022-01-19 00:53:19,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 345 transitions, 7925 flow, removed 200 selfloop flow, removed 26 redundant places. [2022-01-19 00:53:19,923 INFO L242 Difference]: Finished difference. Result has 333 places, 173 transitions, 2897 flow [2022-01-19 00:53:19,923 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7794, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2897, PETRI_PLACES=333, PETRI_TRANSITIONS=173} [2022-01-19 00:53:19,923 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 221 predicate places. [2022-01-19 00:53:19,923 INFO L470 AbstractCegarLoop]: Abstraction has has 333 places, 173 transitions, 2897 flow [2022-01-19 00:53:19,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 99.85714285714286) internal successors, (699), 7 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:19,924 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:19,924 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:53:19,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-19 00:53:19,924 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:19,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:19,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1967076804, now seen corresponding path program 1 times [2022-01-19 00:53:19,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:19,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163995357] [2022-01-19 00:53:19,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:19,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:19,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:53:19,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:19,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163995357] [2022-01-19 00:53:19,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163995357] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:19,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:19,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:53:19,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417092434] [2022-01-19 00:53:19,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:19,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:53:19,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:19,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:53:19,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:53:19,993 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:53:19,993 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 173 transitions, 2897 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:19,993 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:19,993 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:53:19,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:20,492 INFO L129 PetriNetUnfolder]: 846/2443 cut-off events. [2022-01-19 00:53:20,492 INFO L130 PetriNetUnfolder]: For 7900/8154 co-relation queries the response was YES. [2022-01-19 00:53:20,513 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6651 conditions, 2443 events. 846/2443 cut-off events. For 7900/8154 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 22022 event pairs, 379 based on Foata normal form. 2/2360 useless extension candidates. Maximal degree in co-relation 6554. Up to 980 conditions per place. [2022-01-19 00:53:20,519 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 58 selfloop transitions, 24 changer transitions 16/241 dead transitions. [2022-01-19 00:53:20,519 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 241 transitions, 3330 flow [2022-01-19 00:53:20,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 00:53:20,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 00:53:20,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1517 transitions. [2022-01-19 00:53:20,521 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764616935483871 [2022-01-19 00:53:20,521 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1517 transitions. [2022-01-19 00:53:20,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1517 transitions. [2022-01-19 00:53:20,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:20,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1517 transitions. [2022-01-19 00:53:20,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 94.8125) internal successors, (1517), 16 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:20,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:20,524 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:20,524 INFO L186 Difference]: Start difference. First operand has 333 places, 173 transitions, 2897 flow. Second operand 16 states and 1517 transitions. [2022-01-19 00:53:20,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 241 transitions, 3330 flow [2022-01-19 00:53:20,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 241 transitions, 2420 flow, removed 109 selfloop flow, removed 78 redundant places. [2022-01-19 00:53:20,589 INFO L242 Difference]: Finished difference. Result has 236 places, 197 transitions, 2218 flow [2022-01-19 00:53:20,589 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2043, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2218, PETRI_PLACES=236, PETRI_TRANSITIONS=197} [2022-01-19 00:53:20,590 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 124 predicate places. [2022-01-19 00:53:20,590 INFO L470 AbstractCegarLoop]: Abstraction has has 236 places, 197 transitions, 2218 flow [2022-01-19 00:53:20,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:20,590 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:20,590 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:53:20,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-19 00:53:20,590 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:20,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:20,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1310033352, now seen corresponding path program 1 times [2022-01-19 00:53:20,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:20,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852776997] [2022-01-19 00:53:20,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:20,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:20,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:20,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:53:20,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:20,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852776997] [2022-01-19 00:53:20,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852776997] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:20,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:20,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:53:20,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36661880] [2022-01-19 00:53:20,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:20,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:53:20,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:20,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:53:20,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:53:20,647 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:53:20,648 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 197 transitions, 2218 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:20,648 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:20,648 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:53:20,648 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:21,140 INFO L129 PetriNetUnfolder]: 944/2751 cut-off events. [2022-01-19 00:53:21,140 INFO L130 PetriNetUnfolder]: For 3974/4135 co-relation queries the response was YES. [2022-01-19 00:53:21,160 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8128 conditions, 2751 events. 944/2751 cut-off events. For 3974/4135 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 25738 event pairs, 389 based on Foata normal form. 2/2671 useless extension candidates. Maximal degree in co-relation 8076. Up to 1141 conditions per place. [2022-01-19 00:53:21,168 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 94 selfloop transitions, 31 changer transitions 28/296 dead transitions. [2022-01-19 00:53:21,168 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 296 transitions, 2896 flow [2022-01-19 00:53:21,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 00:53:21,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 00:53:21,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2264 transitions. [2022-01-19 00:53:21,170 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.760752688172043 [2022-01-19 00:53:21,170 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2264 transitions. [2022-01-19 00:53:21,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2264 transitions. [2022-01-19 00:53:21,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:21,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2264 transitions. [2022-01-19 00:53:21,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 94.33333333333333) internal successors, (2264), 24 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:21,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:21,174 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:21,174 INFO L186 Difference]: Start difference. First operand has 236 places, 197 transitions, 2218 flow. Second operand 24 states and 2264 transitions. [2022-01-19 00:53:21,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 296 transitions, 2896 flow [2022-01-19 00:53:21,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 296 transitions, 2814 flow, removed 25 selfloop flow, removed 4 redundant places. [2022-01-19 00:53:21,198 INFO L242 Difference]: Finished difference. Result has 273 places, 227 transitions, 2453 flow [2022-01-19 00:53:21,198 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2142, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2453, PETRI_PLACES=273, PETRI_TRANSITIONS=227} [2022-01-19 00:53:21,198 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 161 predicate places. [2022-01-19 00:53:21,198 INFO L470 AbstractCegarLoop]: Abstraction has has 273 places, 227 transitions, 2453 flow [2022-01-19 00:53:21,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:21,199 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:21,199 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] [2022-01-19 00:53:21,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-19 00:53:21,199 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:21,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:21,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1827326326, now seen corresponding path program 2 times [2022-01-19 00:53:21,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:21,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454601596] [2022-01-19 00:53:21,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:21,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:21,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:53:21,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:21,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454601596] [2022-01-19 00:53:21,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454601596] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:21,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:21,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:53:21,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902771501] [2022-01-19 00:53:21,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:21,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:53:21,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:21,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:53:21,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:53:21,263 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:53:21,263 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 227 transitions, 2453 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:21,263 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:21,263 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:53:21,263 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:21,844 INFO L129 PetriNetUnfolder]: 1054/3159 cut-off events. [2022-01-19 00:53:21,844 INFO L130 PetriNetUnfolder]: For 7566/7733 co-relation queries the response was YES. [2022-01-19 00:53:21,872 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11080 conditions, 3159 events. 1054/3159 cut-off events. For 7566/7733 co-relation queries the response was YES. Maximal size of possible extension queue 414. Compared 30567 event pairs, 341 based on Foata normal form. 9/3084 useless extension candidates. Maximal degree in co-relation 11010. Up to 1034 conditions per place. [2022-01-19 00:53:21,880 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 110 selfloop transitions, 39 changer transitions 31/323 dead transitions. [2022-01-19 00:53:21,880 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 323 transitions, 3247 flow [2022-01-19 00:53:21,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 00:53:21,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 00:53:21,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2264 transitions. [2022-01-19 00:53:21,882 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.760752688172043 [2022-01-19 00:53:21,882 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2264 transitions. [2022-01-19 00:53:21,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2264 transitions. [2022-01-19 00:53:21,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:21,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2264 transitions. [2022-01-19 00:53:21,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 94.33333333333333) internal successors, (2264), 24 states have internal predecessors, (2264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:21,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:21,886 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:21,886 INFO L186 Difference]: Start difference. First operand has 273 places, 227 transitions, 2453 flow. Second operand 24 states and 2264 transitions. [2022-01-19 00:53:21,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 323 transitions, 3247 flow [2022-01-19 00:53:21,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 323 transitions, 3117 flow, removed 53 selfloop flow, removed 4 redundant places. [2022-01-19 00:53:21,935 INFO L242 Difference]: Finished difference. Result has 308 places, 252 transitions, 2668 flow [2022-01-19 00:53:21,935 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2329, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2668, PETRI_PLACES=308, PETRI_TRANSITIONS=252} [2022-01-19 00:53:21,937 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 196 predicate places. [2022-01-19 00:53:21,937 INFO L470 AbstractCegarLoop]: Abstraction has has 308 places, 252 transitions, 2668 flow [2022-01-19 00:53:21,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:21,937 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:21,937 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:53:21,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-19 00:53:21,938 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:21,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:21,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1246184228, now seen corresponding path program 2 times [2022-01-19 00:53:21,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:21,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112512181] [2022-01-19 00:53:21,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:21,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:22,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:53:22,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:22,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112512181] [2022-01-19 00:53:22,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112512181] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:22,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:22,015 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:53:22,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177985917] [2022-01-19 00:53:22,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:22,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:53:22,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:22,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:53:22,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:53:22,016 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:53:22,017 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 252 transitions, 2668 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:22,017 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:22,017 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:53:22,017 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:22,683 INFO L129 PetriNetUnfolder]: 1259/3678 cut-off events. [2022-01-19 00:53:22,683 INFO L130 PetriNetUnfolder]: For 11747/11905 co-relation queries the response was YES. [2022-01-19 00:53:22,717 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14022 conditions, 3678 events. 1259/3678 cut-off events. For 11747/11905 co-relation queries the response was YES. Maximal size of possible extension queue 501. Compared 36740 event pairs, 454 based on Foata normal form. 2/3580 useless extension candidates. Maximal degree in co-relation 13937. Up to 1631 conditions per place. [2022-01-19 00:53:22,726 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 122 selfloop transitions, 45 changer transitions 24/334 dead transitions. [2022-01-19 00:53:22,726 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 334 transitions, 3592 flow [2022-01-19 00:53:22,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 00:53:22,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 00:53:22,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2071 transitions. [2022-01-19 00:53:22,738 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7591642228739003 [2022-01-19 00:53:22,738 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2071 transitions. [2022-01-19 00:53:22,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2071 transitions. [2022-01-19 00:53:22,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:22,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2071 transitions. [2022-01-19 00:53:22,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 94.13636363636364) internal successors, (2071), 22 states have internal predecessors, (2071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:22,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:22,742 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:22,742 INFO L186 Difference]: Start difference. First operand has 308 places, 252 transitions, 2668 flow. Second operand 22 states and 2071 transitions. [2022-01-19 00:53:22,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 334 transitions, 3592 flow [2022-01-19 00:53:22,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 334 transitions, 3412 flow, removed 44 selfloop flow, removed 10 redundant places. [2022-01-19 00:53:22,810 INFO L242 Difference]: Finished difference. Result has 331 places, 283 transitions, 2937 flow [2022-01-19 00:53:22,810 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2511, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2937, PETRI_PLACES=331, PETRI_TRANSITIONS=283} [2022-01-19 00:53:22,811 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 219 predicate places. [2022-01-19 00:53:22,811 INFO L470 AbstractCegarLoop]: Abstraction has has 331 places, 283 transitions, 2937 flow [2022-01-19 00:53:22,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:22,811 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:22,811 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:53:22,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-19 00:53:22,811 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:22,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:22,812 INFO L85 PathProgramCache]: Analyzing trace with hash 493663876, now seen corresponding path program 3 times [2022-01-19 00:53:22,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:22,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815828317] [2022-01-19 00:53:22,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:22,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:22,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:53:22,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:22,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815828317] [2022-01-19 00:53:22,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815828317] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:22,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:22,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:53:22,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143643065] [2022-01-19 00:53:22,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:22,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:53:22,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:22,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:53:22,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:53:22,875 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:53:22,875 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 283 transitions, 2937 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:22,875 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:22,875 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:53:22,875 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:23,573 INFO L129 PetriNetUnfolder]: 1401/4001 cut-off events. [2022-01-19 00:53:23,573 INFO L130 PetriNetUnfolder]: For 15591/15755 co-relation queries the response was YES. [2022-01-19 00:53:23,612 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15828 conditions, 4001 events. 1401/4001 cut-off events. For 15591/15755 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 40099 event pairs, 466 based on Foata normal form. 3/3901 useless extension candidates. Maximal degree in co-relation 15734. Up to 1693 conditions per place. [2022-01-19 00:53:23,622 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 140 selfloop transitions, 54 changer transitions 16/353 dead transitions. [2022-01-19 00:53:23,622 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 353 transitions, 3851 flow [2022-01-19 00:53:23,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 00:53:23,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 00:53:23,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1517 transitions. [2022-01-19 00:53:23,623 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764616935483871 [2022-01-19 00:53:23,623 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1517 transitions. [2022-01-19 00:53:23,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1517 transitions. [2022-01-19 00:53:23,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:23,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1517 transitions. [2022-01-19 00:53:23,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 94.8125) internal successors, (1517), 16 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:23,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:23,626 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:23,627 INFO L186 Difference]: Start difference. First operand has 331 places, 283 transitions, 2937 flow. Second operand 16 states and 1517 transitions. [2022-01-19 00:53:23,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 353 transitions, 3851 flow [2022-01-19 00:53:23,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 353 transitions, 3689 flow, removed 81 selfloop flow, removed 2 redundant places. [2022-01-19 00:53:23,733 INFO L242 Difference]: Finished difference. Result has 352 places, 305 transitions, 3218 flow [2022-01-19 00:53:23,733 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2791, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3218, PETRI_PLACES=352, PETRI_TRANSITIONS=305} [2022-01-19 00:53:23,733 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 240 predicate places. [2022-01-19 00:53:23,734 INFO L470 AbstractCegarLoop]: Abstraction has has 352 places, 305 transitions, 3218 flow [2022-01-19 00:53:23,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:23,734 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:23,734 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:53:23,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-19 00:53:23,734 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:23,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:23,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1716812918, now seen corresponding path program 4 times [2022-01-19 00:53:23,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:23,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383188129] [2022-01-19 00:53:23,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:23,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:23,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:23,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:53:23,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:23,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383188129] [2022-01-19 00:53:23,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383188129] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:23,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:23,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:53:23,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571121715] [2022-01-19 00:53:23,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:23,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:53:23,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:23,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:53:23,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:53:23,790 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:53:23,790 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 305 transitions, 3218 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:23,790 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:23,790 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:53:23,790 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:24,614 INFO L129 PetriNetUnfolder]: 1499/4320 cut-off events. [2022-01-19 00:53:24,614 INFO L130 PetriNetUnfolder]: For 19063/19230 co-relation queries the response was YES. [2022-01-19 00:53:24,659 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17817 conditions, 4320 events. 1499/4320 cut-off events. For 19063/19230 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 44332 event pairs, 428 based on Foata normal form. 6/4226 useless extension candidates. Maximal degree in co-relation 17714. Up to 1423 conditions per place. [2022-01-19 00:53:24,669 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 159 selfloop transitions, 79 changer transitions 26/407 dead transitions. [2022-01-19 00:53:24,670 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 407 transitions, 4454 flow [2022-01-19 00:53:24,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 00:53:24,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 00:53:24,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2261 transitions. [2022-01-19 00:53:24,671 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.759744623655914 [2022-01-19 00:53:24,672 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2261 transitions. [2022-01-19 00:53:24,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2261 transitions. [2022-01-19 00:53:24,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:24,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2261 transitions. [2022-01-19 00:53:24,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 94.20833333333333) internal successors, (2261), 24 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:24,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:24,676 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:24,676 INFO L186 Difference]: Start difference. First operand has 352 places, 305 transitions, 3218 flow. Second operand 24 states and 2261 transitions. [2022-01-19 00:53:24,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 407 transitions, 4454 flow [2022-01-19 00:53:24,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 407 transitions, 4116 flow, removed 143 selfloop flow, removed 5 redundant places. [2022-01-19 00:53:24,816 INFO L242 Difference]: Finished difference. Result has 387 places, 331 transitions, 3497 flow [2022-01-19 00:53:24,816 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2973, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3497, PETRI_PLACES=387, PETRI_TRANSITIONS=331} [2022-01-19 00:53:24,817 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 275 predicate places. [2022-01-19 00:53:24,817 INFO L470 AbstractCegarLoop]: Abstraction has has 387 places, 331 transitions, 3497 flow [2022-01-19 00:53:24,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:24,817 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:24,817 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:53:24,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-19 00:53:24,817 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:24,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:24,818 INFO L85 PathProgramCache]: Analyzing trace with hash -871431556, now seen corresponding path program 5 times [2022-01-19 00:53:24,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:24,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687464056] [2022-01-19 00:53:24,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:24,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:24,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:53:24,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:24,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687464056] [2022-01-19 00:53:24,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687464056] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:24,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:24,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:53:24,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254288531] [2022-01-19 00:53:24,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:24,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:53:24,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:24,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:53:24,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:53:24,875 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:53:24,875 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 331 transitions, 3497 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:24,875 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:24,875 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:53:24,875 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:25,715 INFO L129 PetriNetUnfolder]: 1557/4567 cut-off events. [2022-01-19 00:53:25,715 INFO L130 PetriNetUnfolder]: For 20699/20866 co-relation queries the response was YES. [2022-01-19 00:53:25,770 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19265 conditions, 4567 events. 1557/4567 cut-off events. For 20699/20866 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 47999 event pairs, 502 based on Foata normal form. 8/4459 useless extension candidates. Maximal degree in co-relation 19147. Up to 1961 conditions per place. [2022-01-19 00:53:25,781 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 156 selfloop transitions, 72 changer transitions 14/385 dead transitions. [2022-01-19 00:53:25,781 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 385 transitions, 4503 flow [2022-01-19 00:53:25,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 00:53:25,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 00:53:25,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1514 transitions. [2022-01-19 00:53:25,782 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631048387096774 [2022-01-19 00:53:25,782 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1514 transitions. [2022-01-19 00:53:25,783 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1514 transitions. [2022-01-19 00:53:25,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:25,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1514 transitions. [2022-01-19 00:53:25,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 94.625) internal successors, (1514), 16 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:25,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:25,787 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:25,787 INFO L186 Difference]: Start difference. First operand has 387 places, 331 transitions, 3497 flow. Second operand 16 states and 1514 transitions. [2022-01-19 00:53:25,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 385 transitions, 4503 flow [2022-01-19 00:53:25,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 385 transitions, 4443 flow, removed 27 selfloop flow, removed 3 redundant places. [2022-01-19 00:53:25,908 INFO L242 Difference]: Finished difference. Result has 405 places, 348 transitions, 3861 flow [2022-01-19 00:53:25,908 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3440, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3861, PETRI_PLACES=405, PETRI_TRANSITIONS=348} [2022-01-19 00:53:25,908 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 293 predicate places. [2022-01-19 00:53:25,908 INFO L470 AbstractCegarLoop]: Abstraction has has 405 places, 348 transitions, 3861 flow [2022-01-19 00:53:25,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:25,908 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:25,909 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:53:25,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-19 00:53:25,909 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:25,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:25,909 INFO L85 PathProgramCache]: Analyzing trace with hash -203294644, now seen corresponding path program 6 times [2022-01-19 00:53:25,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:25,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115945166] [2022-01-19 00:53:25,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:25,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:25,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:25,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:53:25,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:25,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115945166] [2022-01-19 00:53:25,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115945166] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:25,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:25,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:53:25,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526588778] [2022-01-19 00:53:25,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:25,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:53:25,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:25,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:53:25,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:53:25,967 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:53:25,967 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 348 transitions, 3861 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:25,967 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:25,967 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:53:25,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:27,014 INFO L129 PetriNetUnfolder]: 1814/5340 cut-off events. [2022-01-19 00:53:27,014 INFO L130 PetriNetUnfolder]: For 37678/37845 co-relation queries the response was YES. [2022-01-19 00:53:27,081 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24619 conditions, 5340 events. 1814/5340 cut-off events. For 37678/37845 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 57768 event pairs, 572 based on Foata normal form. 4/5222 useless extension candidates. Maximal degree in co-relation 24495. Up to 1958 conditions per place. [2022-01-19 00:53:27,095 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 187 selfloop transitions, 74 changer transitions 22/426 dead transitions. [2022-01-19 00:53:27,095 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 426 transitions, 5372 flow [2022-01-19 00:53:27,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 00:53:27,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 00:53:27,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1889 transitions. [2022-01-19 00:53:27,097 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616935483870968 [2022-01-19 00:53:27,097 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1889 transitions. [2022-01-19 00:53:27,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1889 transitions. [2022-01-19 00:53:27,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:27,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1889 transitions. [2022-01-19 00:53:27,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.45) internal successors, (1889), 20 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:27,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:27,101 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:27,101 INFO L186 Difference]: Start difference. First operand has 405 places, 348 transitions, 3861 flow. Second operand 20 states and 1889 transitions. [2022-01-19 00:53:27,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 426 transitions, 5372 flow [2022-01-19 00:53:27,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 426 transitions, 5228 flow, removed 58 selfloop flow, removed 3 redundant places. [2022-01-19 00:53:27,289 INFO L242 Difference]: Finished difference. Result has 434 places, 381 transitions, 4580 flow [2022-01-19 00:53:27,290 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3760, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4580, PETRI_PLACES=434, PETRI_TRANSITIONS=381} [2022-01-19 00:53:27,290 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 322 predicate places. [2022-01-19 00:53:27,290 INFO L470 AbstractCegarLoop]: Abstraction has has 434 places, 381 transitions, 4580 flow [2022-01-19 00:53:27,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:27,290 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:27,290 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:53:27,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-19 00:53:27,291 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:27,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:27,291 INFO L85 PathProgramCache]: Analyzing trace with hash -466981080, now seen corresponding path program 7 times [2022-01-19 00:53:27,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:27,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261530674] [2022-01-19 00:53:27,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:27,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:27,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:53:27,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:27,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261530674] [2022-01-19 00:53:27,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261530674] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:27,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:27,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:53:27,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967694593] [2022-01-19 00:53:27,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:27,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:53:27,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:27,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:53:27,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:53:27,350 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:53:27,350 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 381 transitions, 4580 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:27,350 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:27,350 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:53:27,350 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:28,501 INFO L129 PetriNetUnfolder]: 1901/5615 cut-off events. [2022-01-19 00:53:28,501 INFO L130 PetriNetUnfolder]: For 50739/50919 co-relation queries the response was YES. [2022-01-19 00:53:28,576 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27968 conditions, 5615 events. 1901/5615 cut-off events. For 50739/50919 co-relation queries the response was YES. Maximal size of possible extension queue 790. Compared 61886 event pairs, 544 based on Foata normal form. 4/5486 useless extension candidates. Maximal degree in co-relation 27831. Up to 2201 conditions per place. [2022-01-19 00:53:28,592 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 203 selfloop transitions, 91 changer transitions 19/456 dead transitions. [2022-01-19 00:53:28,592 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 451 places, 456 transitions, 6177 flow [2022-01-19 00:53:28,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 00:53:28,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 00:53:28,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1885 transitions. [2022-01-19 00:53:28,593 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7600806451612904 [2022-01-19 00:53:28,593 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1885 transitions. [2022-01-19 00:53:28,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1885 transitions. [2022-01-19 00:53:28,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:28,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1885 transitions. [2022-01-19 00:53:28,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.25) internal successors, (1885), 20 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:28,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:28,597 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:28,597 INFO L186 Difference]: Start difference. First operand has 434 places, 381 transitions, 4580 flow. Second operand 20 states and 1885 transitions. [2022-01-19 00:53:28,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 451 places, 456 transitions, 6177 flow [2022-01-19 00:53:28,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 456 transitions, 5715 flow, removed 231 selfloop flow, removed 2 redundant places. [2022-01-19 00:53:28,908 INFO L242 Difference]: Finished difference. Result has 464 places, 414 transitions, 5148 flow [2022-01-19 00:53:28,908 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4296, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=5148, PETRI_PLACES=464, PETRI_TRANSITIONS=414} [2022-01-19 00:53:28,909 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 352 predicate places. [2022-01-19 00:53:28,909 INFO L470 AbstractCegarLoop]: Abstraction has has 464 places, 414 transitions, 5148 flow [2022-01-19 00:53:28,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:28,909 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:28,909 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:53:28,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-19 00:53:28,909 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:28,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:28,909 INFO L85 PathProgramCache]: Analyzing trace with hash -2069386238, now seen corresponding path program 8 times [2022-01-19 00:53:28,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:28,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456277019] [2022-01-19 00:53:28,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:28,910 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:28,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:53:28,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:28,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456277019] [2022-01-19 00:53:28,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456277019] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:28,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:28,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:53:28,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014241456] [2022-01-19 00:53:28,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:28,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:53:28,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:28,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:53:28,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:53:28,967 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:53:28,967 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 414 transitions, 5148 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:28,967 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:28,967 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:53:28,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:30,193 INFO L129 PetriNetUnfolder]: 1900/5624 cut-off events. [2022-01-19 00:53:30,193 INFO L130 PetriNetUnfolder]: For 45964/46167 co-relation queries the response was YES. [2022-01-19 00:53:30,273 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27980 conditions, 5624 events. 1900/5624 cut-off events. For 45964/46167 co-relation queries the response was YES. Maximal size of possible extension queue 785. Compared 61629 event pairs, 522 based on Foata normal form. 14/5514 useless extension candidates. Maximal degree in co-relation 27829. Up to 2190 conditions per place. [2022-01-19 00:53:30,287 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 190 selfloop transitions, 107 changer transitions 23/463 dead transitions. [2022-01-19 00:53:30,287 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 463 transitions, 6407 flow [2022-01-19 00:53:30,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:53:30,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:53:30,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1699 transitions. [2022-01-19 00:53:30,289 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612007168458781 [2022-01-19 00:53:30,289 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1699 transitions. [2022-01-19 00:53:30,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1699 transitions. [2022-01-19 00:53:30,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:30,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1699 transitions. [2022-01-19 00:53:30,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.38888888888889) internal successors, (1699), 18 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:30,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:30,292 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:30,292 INFO L186 Difference]: Start difference. First operand has 464 places, 414 transitions, 5148 flow. Second operand 18 states and 1699 transitions. [2022-01-19 00:53:30,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 463 transitions, 6407 flow [2022-01-19 00:53:30,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 463 transitions, 6061 flow, removed 173 selfloop flow, removed 2 redundant places. [2022-01-19 00:53:30,600 INFO L242 Difference]: Finished difference. Result has 484 places, 423 transitions, 5357 flow [2022-01-19 00:53:30,601 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4938, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5357, PETRI_PLACES=484, PETRI_TRANSITIONS=423} [2022-01-19 00:53:30,601 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 372 predicate places. [2022-01-19 00:53:30,601 INFO L470 AbstractCegarLoop]: Abstraction has has 484 places, 423 transitions, 5357 flow [2022-01-19 00:53:30,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:30,601 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:30,601 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, 1] [2022-01-19 00:53:30,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-19 00:53:30,602 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:30,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:30,602 INFO L85 PathProgramCache]: Analyzing trace with hash -6694178, now seen corresponding path program 9 times [2022-01-19 00:53:30,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:30,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951672867] [2022-01-19 00:53:30,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:30,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:30,664 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 00:53:30,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:30,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951672867] [2022-01-19 00:53:30,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951672867] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:30,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:30,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:53:30,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386252438] [2022-01-19 00:53:30,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:30,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:53:30,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:30,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:53:30,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:53:30,666 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:53:30,666 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 423 transitions, 5357 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:30,666 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:30,666 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:53:30,666 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:31,906 INFO L129 PetriNetUnfolder]: 2022/5985 cut-off events. [2022-01-19 00:53:31,907 INFO L130 PetriNetUnfolder]: For 40196/40399 co-relation queries the response was YES. [2022-01-19 00:53:31,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29780 conditions, 5985 events. 2022/5985 cut-off events. For 40196/40399 co-relation queries the response was YES. Maximal size of possible extension queue 835. Compared 66539 event pairs, 561 based on Foata normal form. 8/5857 useless extension candidates. Maximal degree in co-relation 29623. Up to 2284 conditions per place. [2022-01-19 00:53:32,008 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 220 selfloop transitions, 104 changer transitions 16/483 dead transitions. [2022-01-19 00:53:32,008 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 483 transitions, 6755 flow [2022-01-19 00:53:32,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 00:53:32,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 00:53:32,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1610 transitions. [2022-01-19 00:53:32,009 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7637571157495257 [2022-01-19 00:53:32,009 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1610 transitions. [2022-01-19 00:53:32,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1610 transitions. [2022-01-19 00:53:32,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:32,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1610 transitions. [2022-01-19 00:53:32,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.70588235294117) internal successors, (1610), 17 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:32,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:32,012 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:32,012 INFO L186 Difference]: Start difference. First operand has 484 places, 423 transitions, 5357 flow. Second operand 17 states and 1610 transitions. [2022-01-19 00:53:32,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 483 transitions, 6755 flow [2022-01-19 00:53:32,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 493 places, 483 transitions, 6637 flow, removed 36 selfloop flow, removed 5 redundant places. [2022-01-19 00:53:32,302 INFO L242 Difference]: Finished difference. Result has 501 places, 445 transitions, 5945 flow [2022-01-19 00:53:32,302 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5248, PETRI_DIFFERENCE_MINUEND_PLACES=477, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5945, PETRI_PLACES=501, PETRI_TRANSITIONS=445} [2022-01-19 00:53:32,303 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 389 predicate places. [2022-01-19 00:53:32,303 INFO L470 AbstractCegarLoop]: Abstraction has has 501 places, 445 transitions, 5945 flow [2022-01-19 00:53:32,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:32,303 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:32,303 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:53:32,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-19 00:53:32,303 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:32,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:32,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1085284942, now seen corresponding path program 10 times [2022-01-19 00:53:32,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:32,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688476041] [2022-01-19 00:53:32,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:32,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:32,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:32,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:53:32,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:32,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688476041] [2022-01-19 00:53:32,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688476041] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:32,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:32,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:53:32,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468695062] [2022-01-19 00:53:32,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:32,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:53:32,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:32,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:53:32,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:53:32,367 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:53:32,367 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 445 transitions, 5945 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:32,367 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:32,367 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:53:32,367 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:33,773 INFO L129 PetriNetUnfolder]: 2103/6267 cut-off events. [2022-01-19 00:53:33,773 INFO L130 PetriNetUnfolder]: For 47136/47336 co-relation queries the response was YES. [2022-01-19 00:53:33,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32504 conditions, 6267 events. 2103/6267 cut-off events. For 47136/47336 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 70116 event pairs, 550 based on Foata normal form. 4/6134 useless extension candidates. Maximal degree in co-relation 32342. Up to 2210 conditions per place. [2022-01-19 00:53:33,883 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 244 selfloop transitions, 103 changer transitions 23/513 dead transitions. [2022-01-19 00:53:33,883 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 513 transitions, 7565 flow [2022-01-19 00:53:33,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 00:53:33,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 00:53:33,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1982 transitions. [2022-01-19 00:53:33,885 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.761136712749616 [2022-01-19 00:53:33,885 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1982 transitions. [2022-01-19 00:53:33,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1982 transitions. [2022-01-19 00:53:33,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:33,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1982 transitions. [2022-01-19 00:53:33,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.38095238095238) internal successors, (1982), 21 states have internal predecessors, (1982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:33,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:33,888 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:33,888 INFO L186 Difference]: Start difference. First operand has 501 places, 445 transitions, 5945 flow. Second operand 21 states and 1982 transitions. [2022-01-19 00:53:33,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 513 transitions, 7565 flow [2022-01-19 00:53:34,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 513 transitions, 7397 flow, removed 84 selfloop flow, removed 2 redundant places. [2022-01-19 00:53:34,348 INFO L242 Difference]: Finished difference. Result has 531 places, 470 transitions, 6629 flow [2022-01-19 00:53:34,349 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5781, PETRI_DIFFERENCE_MINUEND_PLACES=497, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=6629, PETRI_PLACES=531, PETRI_TRANSITIONS=470} [2022-01-19 00:53:34,349 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 419 predicate places. [2022-01-19 00:53:34,349 INFO L470 AbstractCegarLoop]: Abstraction has has 531 places, 470 transitions, 6629 flow [2022-01-19 00:53:34,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:34,349 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:34,349 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:53:34,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-19 00:53:34,349 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:34,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:34,350 INFO L85 PathProgramCache]: Analyzing trace with hash -776227570, now seen corresponding path program 11 times [2022-01-19 00:53:34,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:34,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594753750] [2022-01-19 00:53:34,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:34,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:34,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:53:34,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:34,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594753750] [2022-01-19 00:53:34,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594753750] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:34,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:34,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:53:34,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296554256] [2022-01-19 00:53:34,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:34,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:53:34,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:34,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:53:34,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:53:34,419 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:53:34,419 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 531 places, 470 transitions, 6629 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:34,419 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:34,420 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:53:34,420 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:35,891 INFO L129 PetriNetUnfolder]: 2143/6487 cut-off events. [2022-01-19 00:53:35,891 INFO L130 PetriNetUnfolder]: For 54356/54570 co-relation queries the response was YES. [2022-01-19 00:53:36,001 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34619 conditions, 6487 events. 2143/6487 cut-off events. For 54356/54570 co-relation queries the response was YES. Maximal size of possible extension queue 916. Compared 73400 event pairs, 565 based on Foata normal form. 4/6351 useless extension candidates. Maximal degree in co-relation 34444. Up to 2457 conditions per place. [2022-01-19 00:53:36,019 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 229 selfloop transitions, 122 changer transitions 20/514 dead transitions. [2022-01-19 00:53:36,019 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 514 transitions, 7866 flow [2022-01-19 00:53:36,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:53:36,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:53:36,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1700 transitions. [2022-01-19 00:53:36,029 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616487455197133 [2022-01-19 00:53:36,029 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1700 transitions. [2022-01-19 00:53:36,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1700 transitions. [2022-01-19 00:53:36,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:36,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1700 transitions. [2022-01-19 00:53:36,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.44444444444444) internal successors, (1700), 18 states have internal predecessors, (1700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:36,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:36,032 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:36,032 INFO L186 Difference]: Start difference. First operand has 531 places, 470 transitions, 6629 flow. Second operand 18 states and 1700 transitions. [2022-01-19 00:53:36,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 514 transitions, 7866 flow [2022-01-19 00:53:36,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 514 transitions, 7592 flow, removed 137 selfloop flow, removed 2 redundant places. [2022-01-19 00:53:36,431 INFO L242 Difference]: Finished difference. Result has 551 places, 483 transitions, 6927 flow [2022-01-19 00:53:36,432 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6411, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6927, PETRI_PLACES=551, PETRI_TRANSITIONS=483} [2022-01-19 00:53:36,432 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 439 predicate places. [2022-01-19 00:53:36,432 INFO L470 AbstractCegarLoop]: Abstraction has has 551 places, 483 transitions, 6927 flow [2022-01-19 00:53:36,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:36,432 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:36,432 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:53:36,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-19 00:53:36,433 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:36,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:36,433 INFO L85 PathProgramCache]: Analyzing trace with hash -499431268, now seen corresponding path program 12 times [2022-01-19 00:53:36,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:36,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707137769] [2022-01-19 00:53:36,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:36,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:36,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:53:36,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:36,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707137769] [2022-01-19 00:53:36,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707137769] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:36,493 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:36,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:53:36,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129017616] [2022-01-19 00:53:36,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:36,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:53:36,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:36,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:53:36,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:53:36,494 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:53:36,494 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 483 transitions, 6927 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:36,494 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:36,494 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:53:36,494 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:38,069 INFO L129 PetriNetUnfolder]: 2191/6703 cut-off events. [2022-01-19 00:53:38,069 INFO L130 PetriNetUnfolder]: For 55213/55420 co-relation queries the response was YES. [2022-01-19 00:53:38,171 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36007 conditions, 6703 events. 2191/6703 cut-off events. For 55213/55420 co-relation queries the response was YES. Maximal size of possible extension queue 963. Compared 77142 event pairs, 572 based on Foata normal form. 8/6577 useless extension candidates. Maximal degree in co-relation 35826. Up to 2521 conditions per place. [2022-01-19 00:53:38,186 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 257 selfloop transitions, 117 changer transitions 15/532 dead transitions. [2022-01-19 00:53:38,186 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 532 transitions, 8375 flow [2022-01-19 00:53:38,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 00:53:38,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 00:53:38,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1610 transitions. [2022-01-19 00:53:38,188 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7637571157495257 [2022-01-19 00:53:38,188 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1610 transitions. [2022-01-19 00:53:38,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1610 transitions. [2022-01-19 00:53:38,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:38,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1610 transitions. [2022-01-19 00:53:38,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.70588235294117) internal successors, (1610), 17 states have internal predecessors, (1610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:38,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:38,191 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:38,191 INFO L186 Difference]: Start difference. First operand has 551 places, 483 transitions, 6927 flow. Second operand 17 states and 1610 transitions. [2022-01-19 00:53:38,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 532 transitions, 8375 flow [2022-01-19 00:53:38,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 560 places, 532 transitions, 8213 flow, removed 27 selfloop flow, removed 5 redundant places. [2022-01-19 00:53:38,589 INFO L242 Difference]: Finished difference. Result has 568 places, 502 transitions, 7500 flow [2022-01-19 00:53:38,589 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6777, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7500, PETRI_PLACES=568, PETRI_TRANSITIONS=502} [2022-01-19 00:53:38,589 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 456 predicate places. [2022-01-19 00:53:38,589 INFO L470 AbstractCegarLoop]: Abstraction has has 568 places, 502 transitions, 7500 flow [2022-01-19 00:53:38,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:38,589 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:38,590 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:53:38,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-19 00:53:38,590 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:38,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:38,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1820934362, now seen corresponding path program 13 times [2022-01-19 00:53:38,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:38,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745361860] [2022-01-19 00:53:38,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:38,590 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:38,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:38,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:53:38,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:38,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745361860] [2022-01-19 00:53:38,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745361860] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:38,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:38,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:53:38,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13322396] [2022-01-19 00:53:38,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:38,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:53:38,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:38,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:53:38,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:53:38,664 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:53:38,664 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 502 transitions, 7500 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:38,664 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:38,664 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:53:38,664 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:40,440 INFO L129 PetriNetUnfolder]: 2187/6776 cut-off events. [2022-01-19 00:53:40,441 INFO L130 PetriNetUnfolder]: For 58135/58344 co-relation queries the response was YES. [2022-01-19 00:53:40,528 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36623 conditions, 6776 events. 2187/6776 cut-off events. For 58135/58344 co-relation queries the response was YES. Maximal size of possible extension queue 971. Compared 78255 event pairs, 568 based on Foata normal form. 8/6651 useless extension candidates. Maximal degree in co-relation 36437. Up to 2503 conditions per place. [2022-01-19 00:53:40,541 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 254 selfloop transitions, 119 changer transitions 24/540 dead transitions. [2022-01-19 00:53:40,541 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 540 transitions, 8691 flow [2022-01-19 00:53:40,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:53:40,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:53:40,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1704 transitions. [2022-01-19 00:53:40,543 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7634408602150538 [2022-01-19 00:53:40,543 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1704 transitions. [2022-01-19 00:53:40,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1704 transitions. [2022-01-19 00:53:40,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:40,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1704 transitions. [2022-01-19 00:53:40,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.66666666666667) internal successors, (1704), 18 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:40,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:40,546 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:40,546 INFO L186 Difference]: Start difference. First operand has 568 places, 502 transitions, 7500 flow. Second operand 18 states and 1704 transitions. [2022-01-19 00:53:40,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 540 transitions, 8691 flow [2022-01-19 00:53:40,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 540 transitions, 8452 flow, removed 91 selfloop flow, removed 4 redundant places. [2022-01-19 00:53:40,963 INFO L242 Difference]: Finished difference. Result has 584 places, 509 transitions, 7736 flow [2022-01-19 00:53:40,964 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7285, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7736, PETRI_PLACES=584, PETRI_TRANSITIONS=509} [2022-01-19 00:53:40,964 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 472 predicate places. [2022-01-19 00:53:40,964 INFO L470 AbstractCegarLoop]: Abstraction has has 584 places, 509 transitions, 7736 flow [2022-01-19 00:53:40,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:40,964 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:40,964 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:53:40,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-19 00:53:40,965 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:40,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:40,965 INFO L85 PathProgramCache]: Analyzing trace with hash -238388428, now seen corresponding path program 14 times [2022-01-19 00:53:40,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:40,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752027247] [2022-01-19 00:53:40,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:40,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:41,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:53:41,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:41,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752027247] [2022-01-19 00:53:41,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752027247] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:41,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:41,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:53:41,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946137961] [2022-01-19 00:53:41,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:41,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:53:41,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:41,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:53:41,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:53:41,025 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:53:41,026 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 584 places, 509 transitions, 7736 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:41,026 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:41,026 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:53:41,026 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:42,827 INFO L129 PetriNetUnfolder]: 2314/7189 cut-off events. [2022-01-19 00:53:42,827 INFO L130 PetriNetUnfolder]: For 65052/65261 co-relation queries the response was YES. [2022-01-19 00:53:42,948 INFO L84 FinitePrefix]: Finished finitePrefix Result has 38786 conditions, 7189 events. 2314/7189 cut-off events. For 65052/65261 co-relation queries the response was YES. Maximal size of possible extension queue 1030. Compared 84179 event pairs, 546 based on Foata normal form. 12/7076 useless extension candidates. Maximal degree in co-relation 38598. Up to 2400 conditions per place. [2022-01-19 00:53:42,967 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 256 selfloop transitions, 156 changer transitions 23/578 dead transitions. [2022-01-19 00:53:42,967 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 603 places, 578 transitions, 9355 flow [2022-01-19 00:53:42,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 00:53:42,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 00:53:42,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2069 transitions. [2022-01-19 00:53:42,969 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7584310850439883 [2022-01-19 00:53:42,969 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2069 transitions. [2022-01-19 00:53:42,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2069 transitions. [2022-01-19 00:53:42,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:42,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2069 transitions. [2022-01-19 00:53:42,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 94.04545454545455) internal successors, (2069), 22 states have internal predecessors, (2069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:42,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:42,972 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:42,972 INFO L186 Difference]: Start difference. First operand has 584 places, 509 transitions, 7736 flow. Second operand 22 states and 2069 transitions. [2022-01-19 00:53:42,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 603 places, 578 transitions, 9355 flow [2022-01-19 00:53:43,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 578 transitions, 9196 flow, removed 66 selfloop flow, removed 8 redundant places. [2022-01-19 00:53:43,667 INFO L242 Difference]: Finished difference. Result has 609 places, 537 transitions, 8448 flow [2022-01-19 00:53:43,668 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7579, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=369, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=8448, PETRI_PLACES=609, PETRI_TRANSITIONS=537} [2022-01-19 00:53:43,668 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 497 predicate places. [2022-01-19 00:53:43,668 INFO L470 AbstractCegarLoop]: Abstraction has has 609 places, 537 transitions, 8448 flow [2022-01-19 00:53:43,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:43,668 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:43,669 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:53:43,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-19 00:53:43,669 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:43,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:43,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1075834156, now seen corresponding path program 15 times [2022-01-19 00:53:43,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:43,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834611265] [2022-01-19 00:53:43,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:43,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:43,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:53:43,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:43,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834611265] [2022-01-19 00:53:43,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834611265] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:43,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:43,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:53:43,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531742716] [2022-01-19 00:53:43,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:43,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:53:43,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:43,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:53:43,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:53:43,737 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:53:43,737 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 537 transitions, 8448 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:43,737 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:43,737 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:53:43,738 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:45,821 INFO L129 PetriNetUnfolder]: 2389/7470 cut-off events. [2022-01-19 00:53:45,821 INFO L130 PetriNetUnfolder]: For 70964/71173 co-relation queries the response was YES. [2022-01-19 00:53:45,952 INFO L84 FinitePrefix]: Finished finitePrefix Result has 41656 conditions, 7470 events. 2389/7470 cut-off events. For 70964/71173 co-relation queries the response was YES. Maximal size of possible extension queue 1076. Compared 88349 event pairs, 557 based on Foata normal form. 9/7347 useless extension candidates. Maximal degree in co-relation 41461. Up to 2475 conditions per place. [2022-01-19 00:53:45,969 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 327 selfloop transitions, 110 changer transitions 21/601 dead transitions. [2022-01-19 00:53:45,970 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 627 places, 601 transitions, 10233 flow [2022-01-19 00:53:45,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 00:53:45,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 00:53:45,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1979 transitions. [2022-01-19 00:53:45,971 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7599846390168971 [2022-01-19 00:53:45,971 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1979 transitions. [2022-01-19 00:53:45,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1979 transitions. [2022-01-19 00:53:45,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:45,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1979 transitions. [2022-01-19 00:53:45,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.23809523809524) internal successors, (1979), 21 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:45,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:45,974 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:45,974 INFO L186 Difference]: Start difference. First operand has 609 places, 537 transitions, 8448 flow. Second operand 21 states and 1979 transitions. [2022-01-19 00:53:45,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 627 places, 601 transitions, 10233 flow [2022-01-19 00:53:46,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 601 transitions, 10143 flow, removed 45 selfloop flow, removed 2 redundant places. [2022-01-19 00:53:46,556 INFO L242 Difference]: Finished difference. Result has 639 places, 563 transitions, 9272 flow [2022-01-19 00:53:46,557 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8360, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=9272, PETRI_PLACES=639, PETRI_TRANSITIONS=563} [2022-01-19 00:53:46,557 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 527 predicate places. [2022-01-19 00:53:46,557 INFO L470 AbstractCegarLoop]: Abstraction has has 639 places, 563 transitions, 9272 flow [2022-01-19 00:53:46,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:46,557 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:46,558 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:53:46,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-19 00:53:46,558 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:46,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:46,558 INFO L85 PathProgramCache]: Analyzing trace with hash -537173466, now seen corresponding path program 16 times [2022-01-19 00:53:46,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:46,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124208115] [2022-01-19 00:53:46,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:46,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:46,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:53:46,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:46,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124208115] [2022-01-19 00:53:46,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124208115] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:46,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:46,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:53:46,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256299355] [2022-01-19 00:53:46,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:46,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:53:46,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:46,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:53:46,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:53:46,613 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:53:46,614 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 639 places, 563 transitions, 9272 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:46,614 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:46,614 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:53:46,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:48,661 INFO L129 PetriNetUnfolder]: 2390/7539 cut-off events. [2022-01-19 00:53:48,661 INFO L130 PetriNetUnfolder]: For 78318/78530 co-relation queries the response was YES. [2022-01-19 00:53:48,785 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43147 conditions, 7539 events. 2390/7539 cut-off events. For 78318/78530 co-relation queries the response was YES. Maximal size of possible extension queue 1081. Compared 89038 event pairs, 557 based on Foata normal form. 12/7424 useless extension candidates. Maximal degree in co-relation 42939. Up to 2577 conditions per place. [2022-01-19 00:53:48,801 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 273 selfloop transitions, 166 changer transitions 23/605 dead transitions. [2022-01-19 00:53:48,801 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 654 places, 605 transitions, 10624 flow [2022-01-19 00:53:48,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:53:48,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:53:48,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1699 transitions. [2022-01-19 00:53:48,802 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612007168458781 [2022-01-19 00:53:48,802 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1699 transitions. [2022-01-19 00:53:48,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1699 transitions. [2022-01-19 00:53:48,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:48,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1699 transitions. [2022-01-19 00:53:48,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.38888888888889) internal successors, (1699), 18 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:48,805 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:48,805 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:48,805 INFO L186 Difference]: Start difference. First operand has 639 places, 563 transitions, 9272 flow. Second operand 18 states and 1699 transitions. [2022-01-19 00:53:48,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 654 places, 605 transitions, 10624 flow [2022-01-19 00:53:49,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 652 places, 605 transitions, 10414 flow, removed 105 selfloop flow, removed 2 redundant places. [2022-01-19 00:53:49,413 INFO L242 Difference]: Finished difference. Result has 659 places, 572 transitions, 9629 flow [2022-01-19 00:53:49,413 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9064, PETRI_DIFFERENCE_MINUEND_PLACES=635, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=9629, PETRI_PLACES=659, PETRI_TRANSITIONS=572} [2022-01-19 00:53:49,414 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 547 predicate places. [2022-01-19 00:53:49,414 INFO L470 AbstractCegarLoop]: Abstraction has has 659 places, 572 transitions, 9629 flow [2022-01-19 00:53:49,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:49,414 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:49,414 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:53:49,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-19 00:53:49,414 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:49,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:49,415 INFO L85 PathProgramCache]: Analyzing trace with hash 260532618, now seen corresponding path program 17 times [2022-01-19 00:53:49,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:49,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389718339] [2022-01-19 00:53:49,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:49,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:49,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:49,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:53:49,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:49,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389718339] [2022-01-19 00:53:49,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389718339] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:49,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:49,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:53:49,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346418516] [2022-01-19 00:53:49,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:49,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:53:49,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:49,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:53:49,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:53:49,481 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:53:49,481 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 659 places, 572 transitions, 9629 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:49,481 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:49,482 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:53:49,482 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:51,745 INFO L129 PetriNetUnfolder]: 2508/7920 cut-off events. [2022-01-19 00:53:51,746 INFO L130 PetriNetUnfolder]: For 84985/85197 co-relation queries the response was YES. [2022-01-19 00:53:51,861 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46478 conditions, 7920 events. 2508/7920 cut-off events. For 84985/85197 co-relation queries the response was YES. Maximal size of possible extension queue 1152. Compared 95020 event pairs, 581 based on Foata normal form. 9/7785 useless extension candidates. Maximal degree in co-relation 46264. Up to 2659 conditions per place. [2022-01-19 00:53:51,878 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 331 selfloop transitions, 135 changer transitions 16/625 dead transitions. [2022-01-19 00:53:51,878 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 673 places, 625 transitions, 11329 flow [2022-01-19 00:53:51,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 00:53:51,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 00:53:51,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1609 transitions. [2022-01-19 00:53:51,880 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7632827324478179 [2022-01-19 00:53:51,880 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1609 transitions. [2022-01-19 00:53:51,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1609 transitions. [2022-01-19 00:53:51,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:51,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1609 transitions. [2022-01-19 00:53:51,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.6470588235294) internal successors, (1609), 17 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:51,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:51,883 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:51,883 INFO L186 Difference]: Start difference. First operand has 659 places, 572 transitions, 9629 flow. Second operand 17 states and 1609 transitions. [2022-01-19 00:53:51,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 673 places, 625 transitions, 11329 flow [2022-01-19 00:53:52,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 667 places, 625 transitions, 11077 flow, removed 48 selfloop flow, removed 6 redundant places. [2022-01-19 00:53:52,540 INFO L242 Difference]: Finished difference. Result has 675 places, 594 transitions, 10233 flow [2022-01-19 00:53:52,541 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9391, PETRI_DIFFERENCE_MINUEND_PLACES=651, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10233, PETRI_PLACES=675, PETRI_TRANSITIONS=594} [2022-01-19 00:53:52,541 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 563 predicate places. [2022-01-19 00:53:52,541 INFO L470 AbstractCegarLoop]: Abstraction has has 675 places, 594 transitions, 10233 flow [2022-01-19 00:53:52,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:52,541 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:52,542 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:53:52,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-19 00:53:52,542 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:52,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:52,542 INFO L85 PathProgramCache]: Analyzing trace with hash -718975862, now seen corresponding path program 18 times [2022-01-19 00:53:52,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:52,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104588943] [2022-01-19 00:53:52,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:52,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:52,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:53:52,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:52,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104588943] [2022-01-19 00:53:52,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104588943] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:52,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:52,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:53:52,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124979468] [2022-01-19 00:53:52,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:52,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:53:52,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:52,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:53:52,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:53:52,601 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:53:52,601 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 675 places, 594 transitions, 10233 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:52,601 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:52,601 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:53:52,601 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:55,202 INFO L129 PetriNetUnfolder]: 2590/8147 cut-off events. [2022-01-19 00:53:55,202 INFO L130 PetriNetUnfolder]: For 92177/92385 co-relation queries the response was YES. [2022-01-19 00:53:55,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49479 conditions, 8147 events. 2590/8147 cut-off events. For 92177/92385 co-relation queries the response was YES. Maximal size of possible extension queue 1187. Compared 97916 event pairs, 597 based on Foata normal form. 9/8012 useless extension candidates. Maximal degree in co-relation 49260. Up to 2754 conditions per place. [2022-01-19 00:53:55,490 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 357 selfloop transitions, 130 changer transitions 17/647 dead transitions. [2022-01-19 00:53:55,490 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 689 places, 647 transitions, 11998 flow [2022-01-19 00:53:55,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 00:53:55,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 00:53:55,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1613 transitions. [2022-01-19 00:53:55,492 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7651802656546489 [2022-01-19 00:53:55,492 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1613 transitions. [2022-01-19 00:53:55,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1613 transitions. [2022-01-19 00:53:55,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:55,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1613 transitions. [2022-01-19 00:53:55,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.88235294117646) internal successors, (1613), 17 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:55,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:55,494 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:55,494 INFO L186 Difference]: Start difference. First operand has 675 places, 594 transitions, 10233 flow. Second operand 17 states and 1613 transitions. [2022-01-19 00:53:55,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 689 places, 647 transitions, 11998 flow [2022-01-19 00:53:56,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 687 places, 647 transitions, 11818 flow, removed 90 selfloop flow, removed 2 redundant places. [2022-01-19 00:53:56,243 INFO L242 Difference]: Finished difference. Result has 695 places, 616 transitions, 10914 flow [2022-01-19 00:53:56,244 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10059, PETRI_DIFFERENCE_MINUEND_PLACES=671, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10914, PETRI_PLACES=695, PETRI_TRANSITIONS=616} [2022-01-19 00:53:56,244 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 583 predicate places. [2022-01-19 00:53:56,244 INFO L470 AbstractCegarLoop]: Abstraction has has 695 places, 616 transitions, 10914 flow [2022-01-19 00:53:56,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:56,244 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:56,245 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:53:56,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-19 00:53:56,245 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:56,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:56,245 INFO L85 PathProgramCache]: Analyzing trace with hash -2127790576, now seen corresponding path program 19 times [2022-01-19 00:53:56,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:56,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200670542] [2022-01-19 00:53:56,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:56,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:56,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:53:56,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:56,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200670542] [2022-01-19 00:53:56,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200670542] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:56,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:56,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:53:56,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930384464] [2022-01-19 00:53:56,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:56,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:53:56,306 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:56,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:53:56,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:53:56,307 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:53:56,308 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 695 places, 616 transitions, 10914 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:56,308 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:56,308 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:53:56,308 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:53:58,903 INFO L129 PetriNetUnfolder]: 2604/8307 cut-off events. [2022-01-19 00:53:58,904 INFO L130 PetriNetUnfolder]: For 96572/96780 co-relation queries the response was YES. [2022-01-19 00:53:59,058 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50823 conditions, 8307 events. 2604/8307 cut-off events. For 96572/96780 co-relation queries the response was YES. Maximal size of possible extension queue 1210. Compared 100697 event pairs, 595 based on Foata normal form. 9/8172 useless extension candidates. Maximal degree in co-relation 50597. Up to 2768 conditions per place. [2022-01-19 00:53:59,077 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 354 selfloop transitions, 135 changer transitions 21/653 dead transitions. [2022-01-19 00:53:59,078 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 710 places, 653 transitions, 12363 flow [2022-01-19 00:53:59,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:53:59,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:53:59,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1703 transitions. [2022-01-19 00:53:59,079 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629928315412187 [2022-01-19 00:53:59,079 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1703 transitions. [2022-01-19 00:53:59,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1703 transitions. [2022-01-19 00:53:59,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:53:59,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1703 transitions. [2022-01-19 00:53:59,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:59,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:59,082 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:59,082 INFO L186 Difference]: Start difference. First operand has 695 places, 616 transitions, 10914 flow. Second operand 18 states and 1703 transitions. [2022-01-19 00:53:59,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 710 places, 653 transitions, 12363 flow [2022-01-19 00:53:59,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 707 places, 653 transitions, 12089 flow, removed 101 selfloop flow, removed 3 redundant places. [2022-01-19 00:53:59,910 INFO L242 Difference]: Finished difference. Result has 711 places, 625 transitions, 11201 flow [2022-01-19 00:53:59,910 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10674, PETRI_DIFFERENCE_MINUEND_PLACES=690, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=616, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=487, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=11201, PETRI_PLACES=711, PETRI_TRANSITIONS=625} [2022-01-19 00:53:59,911 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 599 predicate places. [2022-01-19 00:53:59,911 INFO L470 AbstractCegarLoop]: Abstraction has has 711 places, 625 transitions, 11201 flow [2022-01-19 00:53:59,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:59,911 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:53:59,911 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:53:59,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-19 00:53:59,911 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:53:59,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:53:59,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1827453946, now seen corresponding path program 20 times [2022-01-19 00:53:59,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:53:59,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348311416] [2022-01-19 00:53:59,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:53:59,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:53:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:53:59,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:53:59,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:53:59,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348311416] [2022-01-19 00:53:59,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348311416] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:53:59,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:53:59,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:53:59,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926258721] [2022-01-19 00:53:59,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:53:59,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:53:59,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:53:59,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:53:59,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:53:59,972 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:53:59,972 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 711 places, 625 transitions, 11201 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:53:59,973 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:53:59,973 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:53:59,973 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:54:02,593 INFO L129 PetriNetUnfolder]: 2604/8307 cut-off events. [2022-01-19 00:54:02,593 INFO L130 PetriNetUnfolder]: For 97908/98116 co-relation queries the response was YES. [2022-01-19 00:54:02,777 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50610 conditions, 8307 events. 2604/8307 cut-off events. For 97908/98116 co-relation queries the response was YES. Maximal size of possible extension queue 1215. Compared 100661 event pairs, 593 based on Foata normal form. 9/8176 useless extension candidates. Maximal degree in co-relation 50382. Up to 2787 conditions per place. [2022-01-19 00:54:02,787 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 73 selfloop transitions, 0 changer transitions 477/659 dead transitions. [2022-01-19 00:54:02,787 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 726 places, 659 transitions, 12525 flow [2022-01-19 00:54:02,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:54:02,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:54:02,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1703 transitions. [2022-01-19 00:54:02,789 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629928315412187 [2022-01-19 00:54:02,789 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1703 transitions. [2022-01-19 00:54:02,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1703 transitions. [2022-01-19 00:54:02,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:54:02,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1703 transitions. [2022-01-19 00:54:02,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.61111111111111) internal successors, (1703), 18 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:02,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:02,791 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:02,791 INFO L186 Difference]: Start difference. First operand has 711 places, 625 transitions, 11201 flow. Second operand 18 states and 1703 transitions. [2022-01-19 00:54:02,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 726 places, 659 transitions, 12525 flow [2022-01-19 00:54:03,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 709 places, 659 transitions, 12327 flow, removed 66 selfloop flow, removed 17 redundant places. [2022-01-19 00:54:03,540 INFO L242 Difference]: Finished difference. Result has 712 places, 182 transitions, 1659 flow [2022-01-19 00:54:03,541 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11005, PETRI_DIFFERENCE_MINUEND_PLACES=692, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=625, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1659, PETRI_PLACES=712, PETRI_TRANSITIONS=182} [2022-01-19 00:54:03,541 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 600 predicate places. [2022-01-19 00:54:03,541 INFO L470 AbstractCegarLoop]: Abstraction has has 712 places, 182 transitions, 1659 flow [2022-01-19 00:54:03,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:03,541 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:54:03,541 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:54:03,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-19 00:54:03,542 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:54:03,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:54:03,542 INFO L85 PathProgramCache]: Analyzing trace with hash -579562400, now seen corresponding path program 3 times [2022-01-19 00:54:03,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:54:03,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867275550] [2022-01-19 00:54:03,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:54:03,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:54:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:54:03,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:54:03,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:54:03,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867275550] [2022-01-19 00:54:03,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867275550] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:54:03,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:54:03,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:54:03,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261872847] [2022-01-19 00:54:03,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:54:03,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:54:03,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:54:03,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:54:03,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:54:03,606 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:54:03,606 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 712 places, 182 transitions, 1659 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:03,606 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:54:03,606 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:54:03,606 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:54:04,331 INFO L129 PetriNetUnfolder]: 791/2407 cut-off events. [2022-01-19 00:54:04,332 INFO L130 PetriNetUnfolder]: For 7505/7582 co-relation queries the response was YES. [2022-01-19 00:54:04,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9277 conditions, 2407 events. 791/2407 cut-off events. For 7505/7582 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 22332 event pairs, 104 based on Foata normal form. 6/2373 useless extension candidates. Maximal degree in co-relation 9062. Up to 494 conditions per place. [2022-01-19 00:54:04,383 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 82 selfloop transitions, 51 changer transitions 24/266 dead transitions. [2022-01-19 00:54:04,383 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 266 transitions, 2600 flow [2022-01-19 00:54:04,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 00:54:04,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 00:54:04,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2065 transitions. [2022-01-19 00:54:04,385 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7569648093841642 [2022-01-19 00:54:04,385 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2065 transitions. [2022-01-19 00:54:04,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2065 transitions. [2022-01-19 00:54:04,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:54:04,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2065 transitions. [2022-01-19 00:54:04,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 93.86363636363636) internal successors, (2065), 22 states have internal predecessors, (2065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:04,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:04,388 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:04,388 INFO L186 Difference]: Start difference. First operand has 712 places, 182 transitions, 1659 flow. Second operand 22 states and 2065 transitions. [2022-01-19 00:54:04,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 266 transitions, 2600 flow [2022-01-19 00:54:04,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 266 transitions, 2353 flow, removed 60 selfloop flow, removed 40 redundant places. [2022-01-19 00:54:04,438 INFO L242 Difference]: Finished difference. Result has 394 places, 213 transitions, 1943 flow [2022-01-19 00:54:04,438 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1460, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1943, PETRI_PLACES=394, PETRI_TRANSITIONS=213} [2022-01-19 00:54:04,439 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 282 predicate places. [2022-01-19 00:54:04,439 INFO L470 AbstractCegarLoop]: Abstraction has has 394 places, 213 transitions, 1943 flow [2022-01-19 00:54:04,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:04,439 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:54:04,439 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:54:04,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-19 00:54:04,439 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:54:04,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:54:04,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1573834650, now seen corresponding path program 4 times [2022-01-19 00:54:04,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:54:04,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349656869] [2022-01-19 00:54:04,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:54:04,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:54:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:54:04,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:54:04,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:54:04,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349656869] [2022-01-19 00:54:04,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349656869] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:54:04,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:54:04,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:54:04,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430104604] [2022-01-19 00:54:04,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:54:04,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:54:04,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:54:04,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:54:04,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:54:04,508 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:54:04,509 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 213 transitions, 1943 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:04,509 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:54:04,509 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:54:04,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:54:05,300 INFO L129 PetriNetUnfolder]: 1037/3129 cut-off events. [2022-01-19 00:54:05,300 INFO L130 PetriNetUnfolder]: For 18491/18574 co-relation queries the response was YES. [2022-01-19 00:54:05,341 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14533 conditions, 3129 events. 1037/3129 cut-off events. For 18491/18574 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 30448 event pairs, 192 based on Foata normal form. 5/3089 useless extension candidates. Maximal degree in co-relation 14335. Up to 744 conditions per place. [2022-01-19 00:54:05,350 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 106 selfloop transitions, 55 changer transitions 23/293 dead transitions. [2022-01-19 00:54:05,350 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 293 transitions, 3057 flow [2022-01-19 00:54:05,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 00:54:05,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 00:54:05,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1976 transitions. [2022-01-19 00:54:05,351 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7588325652841782 [2022-01-19 00:54:05,351 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1976 transitions. [2022-01-19 00:54:05,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1976 transitions. [2022-01-19 00:54:05,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:54:05,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1976 transitions. [2022-01-19 00:54:05,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.0952380952381) internal successors, (1976), 21 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:05,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:05,357 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:05,357 INFO L186 Difference]: Start difference. First operand has 394 places, 213 transitions, 1943 flow. Second operand 21 states and 1976 transitions. [2022-01-19 00:54:05,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 293 transitions, 3057 flow [2022-01-19 00:54:05,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 293 transitions, 2845 flow, removed 106 selfloop flow, removed 2 redundant places. [2022-01-19 00:54:05,509 INFO L242 Difference]: Finished difference. Result has 425 places, 244 transitions, 2355 flow [2022-01-19 00:54:05,510 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1771, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2355, PETRI_PLACES=425, PETRI_TRANSITIONS=244} [2022-01-19 00:54:05,510 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 313 predicate places. [2022-01-19 00:54:05,510 INFO L470 AbstractCegarLoop]: Abstraction has has 425 places, 244 transitions, 2355 flow [2022-01-19 00:54:05,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:05,510 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:54:05,511 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:54:05,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-19 00:54:05,511 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:54:05,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:54:05,511 INFO L85 PathProgramCache]: Analyzing trace with hash -462960196, now seen corresponding path program 5 times [2022-01-19 00:54:05,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:54:05,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630794079] [2022-01-19 00:54:05,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:54:05,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:54:05,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:54:05,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:54:05,577 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:54:05,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630794079] [2022-01-19 00:54:05,577 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630794079] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:54:05,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:54:05,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:54:05,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045808639] [2022-01-19 00:54:05,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:54:05,578 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:54:05,578 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:54:05,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:54:05,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:54:05,579 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:54:05,579 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 244 transitions, 2355 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:05,579 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:54:05,579 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:54:05,579 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:54:06,513 INFO L129 PetriNetUnfolder]: 1103/3382 cut-off events. [2022-01-19 00:54:06,513 INFO L130 PetriNetUnfolder]: For 30184/30271 co-relation queries the response was YES. [2022-01-19 00:54:06,563 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17329 conditions, 3382 events. 1103/3382 cut-off events. For 30184/30271 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 33707 event pairs, 172 based on Foata normal form. 2/3353 useless extension candidates. Maximal degree in co-relation 17117. Up to 1080 conditions per place. [2022-01-19 00:54:06,572 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 121 selfloop transitions, 65 changer transitions 22/317 dead transitions. [2022-01-19 00:54:06,572 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 317 transitions, 3551 flow [2022-01-19 00:54:06,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 00:54:06,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 00:54:06,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1883 transitions. [2022-01-19 00:54:06,573 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7592741935483871 [2022-01-19 00:54:06,573 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1883 transitions. [2022-01-19 00:54:06,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1883 transitions. [2022-01-19 00:54:06,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:54:06,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1883 transitions. [2022-01-19 00:54:06,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.15) internal successors, (1883), 20 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:06,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:06,576 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:06,576 INFO L186 Difference]: Start difference. First operand has 425 places, 244 transitions, 2355 flow. Second operand 20 states and 1883 transitions. [2022-01-19 00:54:06,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 317 transitions, 3551 flow [2022-01-19 00:54:06,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 317 transitions, 3345 flow, removed 103 selfloop flow, removed 2 redundant places. [2022-01-19 00:54:06,746 INFO L242 Difference]: Finished difference. Result has 455 places, 275 transitions, 2852 flow [2022-01-19 00:54:06,746 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2155, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2852, PETRI_PLACES=455, PETRI_TRANSITIONS=275} [2022-01-19 00:54:06,746 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 343 predicate places. [2022-01-19 00:54:06,746 INFO L470 AbstractCegarLoop]: Abstraction has has 455 places, 275 transitions, 2852 flow [2022-01-19 00:54:06,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:06,746 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:54:06,747 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:54:06,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-19 00:54:06,747 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:54:06,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:54:06,747 INFO L85 PathProgramCache]: Analyzing trace with hash 158013750, now seen corresponding path program 6 times [2022-01-19 00:54:06,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:54:06,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125490831] [2022-01-19 00:54:06,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:54:06,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:54:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:54:06,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:54:06,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:54:06,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125490831] [2022-01-19 00:54:06,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125490831] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:54:06,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:54:06,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:54:06,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412062361] [2022-01-19 00:54:06,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:54:06,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:54:06,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:54:06,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:54:06,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:54:06,802 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:54:06,803 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 275 transitions, 2852 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:06,803 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:54:06,803 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:54:06,803 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:54:07,974 INFO L129 PetriNetUnfolder]: 1193/3768 cut-off events. [2022-01-19 00:54:07,974 INFO L130 PetriNetUnfolder]: For 41544/41656 co-relation queries the response was YES. [2022-01-19 00:54:08,033 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20067 conditions, 3768 events. 1193/3768 cut-off events. For 41544/41656 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 39248 event pairs, 45 based on Foata normal form. 8/3757 useless extension candidates. Maximal degree in co-relation 19841. Up to 569 conditions per place. [2022-01-19 00:54:08,043 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 124 selfloop transitions, 112 changer transitions 27/372 dead transitions. [2022-01-19 00:54:08,043 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 372 transitions, 4226 flow [2022-01-19 00:54:08,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 00:54:08,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 00:54:08,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2246 transitions. [2022-01-19 00:54:08,045 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7547043010752689 [2022-01-19 00:54:08,045 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2246 transitions. [2022-01-19 00:54:08,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2246 transitions. [2022-01-19 00:54:08,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:54:08,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2246 transitions. [2022-01-19 00:54:08,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 93.58333333333333) internal successors, (2246), 24 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:08,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:08,048 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:08,048 INFO L186 Difference]: Start difference. First operand has 455 places, 275 transitions, 2852 flow. Second operand 24 states and 2246 transitions. [2022-01-19 00:54:08,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 372 transitions, 4226 flow [2022-01-19 00:54:08,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 372 transitions, 3874 flow, removed 176 selfloop flow, removed 2 redundant places. [2022-01-19 00:54:08,315 INFO L242 Difference]: Finished difference. Result has 492 places, 300 transitions, 3244 flow [2022-01-19 00:54:08,315 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2574, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3244, PETRI_PLACES=492, PETRI_TRANSITIONS=300} [2022-01-19 00:54:08,316 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 380 predicate places. [2022-01-19 00:54:08,316 INFO L470 AbstractCegarLoop]: Abstraction has has 492 places, 300 transitions, 3244 flow [2022-01-19 00:54:08,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:08,316 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:54:08,316 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:54:08,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-19 00:54:08,316 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:54:08,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:54:08,317 INFO L85 PathProgramCache]: Analyzing trace with hash 16277834, now seen corresponding path program 7 times [2022-01-19 00:54:08,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:54:08,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449701625] [2022-01-19 00:54:08,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:54:08,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:54:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:54:08,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:54:08,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:54:08,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449701625] [2022-01-19 00:54:08,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449701625] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:54:08,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:54:08,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:54:08,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586218998] [2022-01-19 00:54:08,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:54:08,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:54:08,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:54:08,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:54:08,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:54:08,381 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:54:08,382 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 300 transitions, 3244 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:08,382 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:54:08,382 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:54:08,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:54:09,518 INFO L129 PetriNetUnfolder]: 1247/3899 cut-off events. [2022-01-19 00:54:09,518 INFO L130 PetriNetUnfolder]: For 47451/47560 co-relation queries the response was YES. [2022-01-19 00:54:09,586 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22130 conditions, 3899 events. 1247/3899 cut-off events. For 47451/47560 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 40405 event pairs, 162 based on Foata normal form. 12/3866 useless extension candidates. Maximal degree in co-relation 21887. Up to 994 conditions per place. [2022-01-19 00:54:09,596 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 135 selfloop transitions, 95 changer transitions 14/353 dead transitions. [2022-01-19 00:54:09,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 505 places, 353 transitions, 4391 flow [2022-01-19 00:54:09,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-19 00:54:09,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-01-19 00:54:09,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1508 transitions. [2022-01-19 00:54:09,598 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7600806451612904 [2022-01-19 00:54:09,598 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1508 transitions. [2022-01-19 00:54:09,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1508 transitions. [2022-01-19 00:54:09,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:54:09,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1508 transitions. [2022-01-19 00:54:09,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 94.25) internal successors, (1508), 16 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:09,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:09,600 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:09,600 INFO L186 Difference]: Start difference. First operand has 492 places, 300 transitions, 3244 flow. Second operand 16 states and 1508 transitions. [2022-01-19 00:54:09,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 505 places, 353 transitions, 4391 flow [2022-01-19 00:54:09,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 498 places, 353 transitions, 4159 flow, removed 20 selfloop flow, removed 7 redundant places. [2022-01-19 00:54:09,957 INFO L242 Difference]: Finished difference. Result has 506 places, 317 transitions, 3553 flow [2022-01-19 00:54:09,957 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3047, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3553, PETRI_PLACES=506, PETRI_TRANSITIONS=317} [2022-01-19 00:54:09,958 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 394 predicate places. [2022-01-19 00:54:09,958 INFO L470 AbstractCegarLoop]: Abstraction has has 506 places, 317 transitions, 3553 flow [2022-01-19 00:54:09,958 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:09,958 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:54:09,958 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:54:09,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-19 00:54:09,958 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:54:09,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:54:09,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1613740250, now seen corresponding path program 8 times [2022-01-19 00:54:09,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:54:09,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590180224] [2022-01-19 00:54:09,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:54:09,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:54:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:54:10,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:54:10,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:54:10,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590180224] [2022-01-19 00:54:10,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590180224] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:54:10,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:54:10,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:54:10,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149450835] [2022-01-19 00:54:10,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:54:10,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:54:10,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:54:10,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:54:10,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:54:10,031 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:54:10,033 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 317 transitions, 3553 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:10,033 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:54:10,033 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:54:10,033 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:54:11,278 INFO L129 PetriNetUnfolder]: 1323/4311 cut-off events. [2022-01-19 00:54:11,278 INFO L130 PetriNetUnfolder]: For 57854/57963 co-relation queries the response was YES. [2022-01-19 00:54:11,357 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24864 conditions, 4311 events. 1323/4311 cut-off events. For 57854/57963 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 46682 event pairs, 183 based on Foata normal form. 7/4264 useless extension candidates. Maximal degree in co-relation 24615. Up to 1068 conditions per place. [2022-01-19 00:54:11,369 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 155 selfloop transitions, 105 changer transitions 19/388 dead transitions. [2022-01-19 00:54:11,369 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 523 places, 388 transitions, 4968 flow [2022-01-19 00:54:11,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 00:54:11,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 00:54:11,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1879 transitions. [2022-01-19 00:54:11,370 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7576612903225807 [2022-01-19 00:54:11,370 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1879 transitions. [2022-01-19 00:54:11,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1879 transitions. [2022-01-19 00:54:11,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:54:11,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1879 transitions. [2022-01-19 00:54:11,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 93.95) internal successors, (1879), 20 states have internal predecessors, (1879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:11,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:11,373 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 124.0) internal successors, (2604), 21 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:11,373 INFO L186 Difference]: Start difference. First operand has 506 places, 317 transitions, 3553 flow. Second operand 20 states and 1879 transitions. [2022-01-19 00:54:11,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 523 places, 388 transitions, 4968 flow [2022-01-19 00:54:11,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 388 transitions, 4794 flow, removed 66 selfloop flow, removed 3 redundant places. [2022-01-19 00:54:11,815 INFO L242 Difference]: Finished difference. Result has 534 places, 349 transitions, 4351 flow [2022-01-19 00:54:11,815 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3403, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4351, PETRI_PLACES=534, PETRI_TRANSITIONS=349} [2022-01-19 00:54:11,815 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 422 predicate places. [2022-01-19 00:54:11,815 INFO L470 AbstractCegarLoop]: Abstraction has has 534 places, 349 transitions, 4351 flow [2022-01-19 00:54:11,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:11,816 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:54:11,816 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:54:11,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-19 00:54:11,816 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:54:11,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:54:11,816 INFO L85 PathProgramCache]: Analyzing trace with hash -279606758, now seen corresponding path program 9 times [2022-01-19 00:54:11,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:54:11,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244512429] [2022-01-19 00:54:11,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:54:11,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:54:11,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:54:11,877 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 00:54:11,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:54:11,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244512429] [2022-01-19 00:54:11,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244512429] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:54:11,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:54:11,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:54:11,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127105140] [2022-01-19 00:54:11,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:54:11,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:54:11,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:54:11,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:54:11,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:54:11,878 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:54:11,879 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 349 transitions, 4351 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:11,879 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:54:11,879 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:54:11,879 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:54:13,164 INFO L129 PetriNetUnfolder]: 1315/4354 cut-off events. [2022-01-19 00:54:13,164 INFO L130 PetriNetUnfolder]: For 59673/59785 co-relation queries the response was YES. [2022-01-19 00:54:13,366 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26068 conditions, 4354 events. 1315/4354 cut-off events. For 59673/59785 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 47648 event pairs, 144 based on Foata normal form. 16/4337 useless extension candidates. Maximal degree in co-relation 25807. Up to 1056 conditions per place. [2022-01-19 00:54:13,380 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 150 selfloop transitions, 116 changer transitions 23/398 dead transitions. [2022-01-19 00:54:13,380 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 549 places, 398 transitions, 5612 flow [2022-01-19 00:54:13,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:54:13,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:54:13,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1693 transitions. [2022-01-19 00:54:13,381 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7585125448028673 [2022-01-19 00:54:13,381 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1693 transitions. [2022-01-19 00:54:13,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1693 transitions. [2022-01-19 00:54:13,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:54:13,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1693 transitions. [2022-01-19 00:54:13,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.05555555555556) internal successors, (1693), 18 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:13,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:13,384 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:13,384 INFO L186 Difference]: Start difference. First operand has 534 places, 349 transitions, 4351 flow. Second operand 18 states and 1693 transitions. [2022-01-19 00:54:13,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 549 places, 398 transitions, 5612 flow [2022-01-19 00:54:13,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 547 places, 398 transitions, 5168 flow, removed 222 selfloop flow, removed 2 redundant places. [2022-01-19 00:54:13,879 INFO L242 Difference]: Finished difference. Result has 554 places, 358 transitions, 4547 flow [2022-01-19 00:54:13,879 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4105, PETRI_DIFFERENCE_MINUEND_PLACES=530, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4547, PETRI_PLACES=554, PETRI_TRANSITIONS=358} [2022-01-19 00:54:13,879 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 442 predicate places. [2022-01-19 00:54:13,879 INFO L470 AbstractCegarLoop]: Abstraction has has 554 places, 358 transitions, 4547 flow [2022-01-19 00:54:13,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:13,880 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:54:13,880 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:54:13,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-19 00:54:13,880 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:54:13,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:54:13,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1098363170, now seen corresponding path program 10 times [2022-01-19 00:54:13,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:54:13,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473265370] [2022-01-19 00:54:13,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:54:13,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:54:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:54:13,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:54:13,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:54:13,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473265370] [2022-01-19 00:54:13,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473265370] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:54:13,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:54:13,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:54:13,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366288898] [2022-01-19 00:54:13,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:54:13,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:54:13,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:54:13,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:54:13,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:54:13,941 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:54:13,942 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 554 places, 358 transitions, 4547 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:13,942 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:54:13,942 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:54:13,942 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:54:15,464 INFO L129 PetriNetUnfolder]: 1429/4760 cut-off events. [2022-01-19 00:54:15,464 INFO L130 PetriNetUnfolder]: For 43464/43576 co-relation queries the response was YES. [2022-01-19 00:54:15,547 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27630 conditions, 4760 events. 1429/4760 cut-off events. For 43464/43576 co-relation queries the response was YES. Maximal size of possible extension queue 692. Compared 53226 event pairs, 178 based on Foata normal form. 10/4733 useless extension candidates. Maximal degree in co-relation 27363. Up to 1156 conditions per place. [2022-01-19 00:54:15,559 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 174 selfloop transitions, 116 changer transitions 16/415 dead transitions. [2022-01-19 00:54:15,559 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 568 places, 415 transitions, 5841 flow [2022-01-19 00:54:15,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 00:54:15,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 00:54:15,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1604 transitions. [2022-01-19 00:54:15,560 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7609108159392789 [2022-01-19 00:54:15,560 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1604 transitions. [2022-01-19 00:54:15,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1604 transitions. [2022-01-19 00:54:15,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:54:15,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1604 transitions. [2022-01-19 00:54:15,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.3529411764706) internal successors, (1604), 17 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:15,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:15,562 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:15,562 INFO L186 Difference]: Start difference. First operand has 554 places, 358 transitions, 4547 flow. Second operand 17 states and 1604 transitions. [2022-01-19 00:54:15,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 568 places, 415 transitions, 5841 flow [2022-01-19 00:54:15,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 562 places, 415 transitions, 5657 flow, removed 45 selfloop flow, removed 6 redundant places. [2022-01-19 00:54:15,974 INFO L242 Difference]: Finished difference. Result has 570 places, 380 transitions, 5119 flow [2022-01-19 00:54:15,974 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4377, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=358, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5119, PETRI_PLACES=570, PETRI_TRANSITIONS=380} [2022-01-19 00:54:15,975 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 458 predicate places. [2022-01-19 00:54:15,975 INFO L470 AbstractCegarLoop]: Abstraction has has 570 places, 380 transitions, 5119 flow [2022-01-19 00:54:15,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:15,975 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:54:15,975 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:54:15,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-19 00:54:15,975 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:54:15,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:54:15,976 INFO L85 PathProgramCache]: Analyzing trace with hash -593310370, now seen corresponding path program 11 times [2022-01-19 00:54:15,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:54:15,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218967223] [2022-01-19 00:54:15,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:54:15,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:54:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:54:16,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:54:16,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:54:16,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218967223] [2022-01-19 00:54:16,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218967223] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:54:16,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:54:16,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:54:16,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906018377] [2022-01-19 00:54:16,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:54:16,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:54:16,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:54:16,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:54:16,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:54:16,040 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:54:16,041 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 380 transitions, 5119 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:16,041 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:54:16,041 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:54:16,041 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:54:17,635 INFO L129 PetriNetUnfolder]: 1503/5139 cut-off events. [2022-01-19 00:54:17,636 INFO L130 PetriNetUnfolder]: For 49423/49532 co-relation queries the response was YES. [2022-01-19 00:54:17,739 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30555 conditions, 5139 events. 1503/5139 cut-off events. For 49423/49532 co-relation queries the response was YES. Maximal size of possible extension queue 754. Compared 58854 event pairs, 194 based on Foata normal form. 7/5100 useless extension candidates. Maximal degree in co-relation 30283. Up to 1266 conditions per place. [2022-01-19 00:54:17,754 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 197 selfloop transitions, 112 changer transitions 15/433 dead transitions. [2022-01-19 00:54:17,754 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 433 transitions, 6434 flow [2022-01-19 00:54:17,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 00:54:17,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 00:54:17,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1604 transitions. [2022-01-19 00:54:17,756 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7609108159392789 [2022-01-19 00:54:17,756 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1604 transitions. [2022-01-19 00:54:17,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1604 transitions. [2022-01-19 00:54:17,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:54:17,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1604 transitions. [2022-01-19 00:54:17,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.3529411764706) internal successors, (1604), 17 states have internal predecessors, (1604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:17,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:17,758 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:17,758 INFO L186 Difference]: Start difference. First operand has 570 places, 380 transitions, 5119 flow. Second operand 17 states and 1604 transitions. [2022-01-19 00:54:17,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 433 transitions, 6434 flow [2022-01-19 00:54:18,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 582 places, 433 transitions, 6262 flow, removed 86 selfloop flow, removed 2 redundant places. [2022-01-19 00:54:18,251 INFO L242 Difference]: Finished difference. Result has 590 places, 402 transitions, 5675 flow [2022-01-19 00:54:18,252 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4953, PETRI_DIFFERENCE_MINUEND_PLACES=566, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5675, PETRI_PLACES=590, PETRI_TRANSITIONS=402} [2022-01-19 00:54:18,252 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 478 predicate places. [2022-01-19 00:54:18,252 INFO L470 AbstractCegarLoop]: Abstraction has has 590 places, 402 transitions, 5675 flow [2022-01-19 00:54:18,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:18,252 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:54:18,252 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:54:18,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-19 00:54:18,253 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:54:18,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:54:18,253 INFO L85 PathProgramCache]: Analyzing trace with hash 1911279180, now seen corresponding path program 12 times [2022-01-19 00:54:18,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:54:18,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379781124] [2022-01-19 00:54:18,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:54:18,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:54:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:54:18,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:54:18,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:54:18,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379781124] [2022-01-19 00:54:18,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379781124] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:54:18,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:54:18,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:54:18,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575495991] [2022-01-19 00:54:18,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:54:18,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:54:18,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:54:18,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:54:18,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:54:18,311 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:54:18,312 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 402 transitions, 5675 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:18,312 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:54:18,312 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:54:18,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:54:19,996 INFO L129 PetriNetUnfolder]: 1513/5279 cut-off events. [2022-01-19 00:54:19,996 INFO L130 PetriNetUnfolder]: For 51423/51534 co-relation queries the response was YES. [2022-01-19 00:54:20,097 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31770 conditions, 5279 events. 1513/5279 cut-off events. For 51423/51534 co-relation queries the response was YES. Maximal size of possible extension queue 774. Compared 60886 event pairs, 204 based on Foata normal form. 7/5236 useless extension candidates. Maximal degree in co-relation 31491. Up to 1310 conditions per place. [2022-01-19 00:54:20,110 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 182 selfloop transitions, 130 changer transitions 20/441 dead transitions. [2022-01-19 00:54:20,110 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 605 places, 441 transitions, 6714 flow [2022-01-19 00:54:20,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:54:20,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:54:20,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1694 transitions. [2022-01-19 00:54:20,112 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7589605734767025 [2022-01-19 00:54:20,112 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1694 transitions. [2022-01-19 00:54:20,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1694 transitions. [2022-01-19 00:54:20,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:54:20,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1694 transitions. [2022-01-19 00:54:20,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.11111111111111) internal successors, (1694), 18 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:20,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:20,114 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:20,114 INFO L186 Difference]: Start difference. First operand has 590 places, 402 transitions, 5675 flow. Second operand 18 states and 1694 transitions. [2022-01-19 00:54:20,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 605 places, 441 transitions, 6714 flow [2022-01-19 00:54:20,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 602 places, 441 transitions, 6517 flow, removed 72 selfloop flow, removed 3 redundant places. [2022-01-19 00:54:20,611 INFO L242 Difference]: Finished difference. Result has 607 places, 412 transitions, 5972 flow [2022-01-19 00:54:20,611 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5486, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5972, PETRI_PLACES=607, PETRI_TRANSITIONS=412} [2022-01-19 00:54:20,611 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 495 predicate places. [2022-01-19 00:54:20,611 INFO L470 AbstractCegarLoop]: Abstraction has has 607 places, 412 transitions, 5972 flow [2022-01-19 00:54:20,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:20,612 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:54:20,612 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:54:20,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-19 00:54:20,612 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:54:20,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:54:20,612 INFO L85 PathProgramCache]: Analyzing trace with hash -426158626, now seen corresponding path program 13 times [2022-01-19 00:54:20,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:54:20,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650753743] [2022-01-19 00:54:20,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:54:20,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:54:20,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:54:20,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:54:20,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:54:20,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650753743] [2022-01-19 00:54:20,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650753743] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:54:20,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:54:20,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:54:20,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002558286] [2022-01-19 00:54:20,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:54:20,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:54:20,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:54:20,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:54:20,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:54:20,685 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:54:20,686 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 607 places, 412 transitions, 5972 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:20,686 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:54:20,686 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:54:20,686 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:54:22,432 INFO L129 PetriNetUnfolder]: 1507/5265 cut-off events. [2022-01-19 00:54:22,432 INFO L130 PetriNetUnfolder]: For 51138/51252 co-relation queries the response was YES. [2022-01-19 00:54:22,553 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31997 conditions, 5265 events. 1507/5265 cut-off events. For 51138/51252 co-relation queries the response was YES. Maximal size of possible extension queue 769. Compared 60736 event pairs, 211 based on Foata normal form. 7/5224 useless extension candidates. Maximal degree in co-relation 31715. Up to 1290 conditions per place. [2022-01-19 00:54:22,566 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 196 selfloop transitions, 119 changer transitions 25/449 dead transitions. [2022-01-19 00:54:22,566 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 622 places, 449 transitions, 6992 flow [2022-01-19 00:54:22,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:54:22,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:54:22,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1698 transitions. [2022-01-19 00:54:22,568 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.760752688172043 [2022-01-19 00:54:22,568 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1698 transitions. [2022-01-19 00:54:22,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1698 transitions. [2022-01-19 00:54:22,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:54:22,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1698 transitions. [2022-01-19 00:54:22,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.33333333333333) internal successors, (1698), 18 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:22,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:22,570 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:22,570 INFO L186 Difference]: Start difference. First operand has 607 places, 412 transitions, 5972 flow. Second operand 18 states and 1698 transitions. [2022-01-19 00:54:22,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 622 places, 449 transitions, 6992 flow [2022-01-19 00:54:23,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 615 places, 449 transitions, 6842 flow, removed 39 selfloop flow, removed 7 redundant places. [2022-01-19 00:54:23,229 INFO L242 Difference]: Finished difference. Result has 620 places, 419 transitions, 6262 flow [2022-01-19 00:54:23,229 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5828, PETRI_DIFFERENCE_MINUEND_PLACES=598, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6262, PETRI_PLACES=620, PETRI_TRANSITIONS=419} [2022-01-19 00:54:23,230 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 508 predicate places. [2022-01-19 00:54:23,230 INFO L470 AbstractCegarLoop]: Abstraction has has 620 places, 419 transitions, 6262 flow [2022-01-19 00:54:23,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:23,230 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:54:23,230 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:54:23,230 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-19 00:54:23,230 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:54:23,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:54:23,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1251488116, now seen corresponding path program 14 times [2022-01-19 00:54:23,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:54:23,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224425696] [2022-01-19 00:54:23,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:54:23,231 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:54:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:54:23,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:54:23,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:54:23,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224425696] [2022-01-19 00:54:23,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224425696] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:54:23,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:54:23,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:54:23,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742107898] [2022-01-19 00:54:23,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:54:23,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:54:23,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:54:23,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:54:23,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:54:23,288 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:54:23,289 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 620 places, 419 transitions, 6262 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:23,289 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:54:23,289 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:54:23,289 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:54:25,164 INFO L129 PetriNetUnfolder]: 1619/5708 cut-off events. [2022-01-19 00:54:25,164 INFO L130 PetriNetUnfolder]: For 58892/59003 co-relation queries the response was YES. [2022-01-19 00:54:25,280 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34628 conditions, 5708 events. 1619/5708 cut-off events. For 58892/59003 co-relation queries the response was YES. Maximal size of possible extension queue 848. Compared 67264 event pairs, 164 based on Foata normal form. 8/5690 useless extension candidates. Maximal degree in co-relation 34347. Up to 1170 conditions per place. [2022-01-19 00:54:25,293 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 200 selfloop transitions, 156 changer transitions 23/488 dead transitions. [2022-01-19 00:54:25,294 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 488 transitions, 7744 flow [2022-01-19 00:54:25,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 00:54:25,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 00:54:25,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2063 transitions. [2022-01-19 00:54:25,295 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7562316715542522 [2022-01-19 00:54:25,295 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2063 transitions. [2022-01-19 00:54:25,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2063 transitions. [2022-01-19 00:54:25,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:54:25,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2063 transitions. [2022-01-19 00:54:25,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 93.77272727272727) internal successors, (2063), 22 states have internal predecessors, (2063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:25,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:25,298 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 124.0) internal successors, (2852), 23 states have internal predecessors, (2852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:25,298 INFO L186 Difference]: Start difference. First operand has 620 places, 419 transitions, 6262 flow. Second operand 22 states and 2063 transitions. [2022-01-19 00:54:25,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 488 transitions, 7744 flow [2022-01-19 00:54:25,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 631 places, 488 transitions, 7589 flow, removed 64 selfloop flow, removed 8 redundant places. [2022-01-19 00:54:25,855 INFO L242 Difference]: Finished difference. Result has 645 places, 447 transitions, 6955 flow [2022-01-19 00:54:25,856 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6109, PETRI_DIFFERENCE_MINUEND_PLACES=610, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6955, PETRI_PLACES=645, PETRI_TRANSITIONS=447} [2022-01-19 00:54:25,856 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 533 predicate places. [2022-01-19 00:54:25,856 INFO L470 AbstractCegarLoop]: Abstraction has has 645 places, 447 transitions, 6955 flow [2022-01-19 00:54:25,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:25,856 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:54:25,856 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:54:25,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-19 00:54:25,856 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:54:25,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:54:25,857 INFO L85 PathProgramCache]: Analyzing trace with hash -646797606, now seen corresponding path program 15 times [2022-01-19 00:54:25,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:54:25,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348426282] [2022-01-19 00:54:25,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:54:25,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:54:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:54:25,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:54:25,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:54:25,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348426282] [2022-01-19 00:54:25,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348426282] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:54:25,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:54:25,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:54:25,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841152575] [2022-01-19 00:54:25,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:54:25,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:54:25,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:54:25,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:54:25,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:54:25,914 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:54:25,915 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 645 places, 447 transitions, 6955 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:25,915 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:54:25,915 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:54:25,915 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:54:27,892 INFO L129 PetriNetUnfolder]: 1687/5916 cut-off events. [2022-01-19 00:54:27,893 INFO L130 PetriNetUnfolder]: For 68955/69066 co-relation queries the response was YES. [2022-01-19 00:54:28,006 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37743 conditions, 5916 events. 1687/5916 cut-off events. For 68955/69066 co-relation queries the response was YES. Maximal size of possible extension queue 870. Compared 69959 event pairs, 176 based on Foata normal form. 8/5889 useless extension candidates. Maximal degree in co-relation 37455. Up to 1862 conditions per place. [2022-01-19 00:54:28,020 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 271 selfloop transitions, 110 changer transitions 21/511 dead transitions. [2022-01-19 00:54:28,020 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 663 places, 511 transitions, 8605 flow [2022-01-19 00:54:28,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 00:54:28,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 00:54:28,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1973 transitions. [2022-01-19 00:54:28,021 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7576804915514593 [2022-01-19 00:54:28,021 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1973 transitions. [2022-01-19 00:54:28,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1973 transitions. [2022-01-19 00:54:28,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:54:28,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1973 transitions. [2022-01-19 00:54:28,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 93.95238095238095) internal successors, (1973), 21 states have internal predecessors, (1973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:28,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:28,024 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:28,024 INFO L186 Difference]: Start difference. First operand has 645 places, 447 transitions, 6955 flow. Second operand 21 states and 1973 transitions. [2022-01-19 00:54:28,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 663 places, 511 transitions, 8605 flow [2022-01-19 00:54:28,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 661 places, 511 transitions, 8519 flow, removed 43 selfloop flow, removed 2 redundant places. [2022-01-19 00:54:28,648 INFO L242 Difference]: Finished difference. Result has 675 places, 473 transitions, 7764 flow [2022-01-19 00:54:28,649 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6871, PETRI_DIFFERENCE_MINUEND_PLACES=641, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=7764, PETRI_PLACES=675, PETRI_TRANSITIONS=473} [2022-01-19 00:54:28,649 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 563 predicate places. [2022-01-19 00:54:28,649 INFO L470 AbstractCegarLoop]: Abstraction has has 675 places, 473 transitions, 7764 flow [2022-01-19 00:54:28,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:28,649 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:54:28,649 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:54:28,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-19 00:54:28,650 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:54:28,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:54:28,650 INFO L85 PathProgramCache]: Analyzing trace with hash 951166574, now seen corresponding path program 16 times [2022-01-19 00:54:28,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:54:28,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817197646] [2022-01-19 00:54:28,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:54:28,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:54:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:54:28,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:54:28,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:54:28,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817197646] [2022-01-19 00:54:28,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817197646] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:54:28,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:54:28,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:54:28,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978419966] [2022-01-19 00:54:28,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:54:28,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:54:28,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:54:28,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:54:28,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:54:28,709 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:54:28,709 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 675 places, 473 transitions, 7764 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:28,710 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:54:28,710 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:54:28,710 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:54:30,620 INFO L129 PetriNetUnfolder]: 1685/5872 cut-off events. [2022-01-19 00:54:30,621 INFO L130 PetriNetUnfolder]: For 76728/76836 co-relation queries the response was YES. [2022-01-19 00:54:30,746 INFO L84 FinitePrefix]: Finished finitePrefix Result has 39310 conditions, 5872 events. 1685/5872 cut-off events. For 76728/76836 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 69042 event pairs, 180 based on Foata normal form. 8/5852 useless extension candidates. Maximal degree in co-relation 39009. Up to 1354 conditions per place. [2022-01-19 00:54:30,760 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 217 selfloop transitions, 166 changer transitions 23/515 dead transitions. [2022-01-19 00:54:30,760 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 690 places, 515 transitions, 9000 flow [2022-01-19 00:54:30,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:54:30,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:54:30,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1693 transitions. [2022-01-19 00:54:30,761 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7585125448028673 [2022-01-19 00:54:30,761 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1693 transitions. [2022-01-19 00:54:30,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1693 transitions. [2022-01-19 00:54:30,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:54:30,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1693 transitions. [2022-01-19 00:54:30,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.05555555555556) internal successors, (1693), 18 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:30,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:30,764 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:30,764 INFO L186 Difference]: Start difference. First operand has 675 places, 473 transitions, 7764 flow. Second operand 18 states and 1693 transitions. [2022-01-19 00:54:30,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 690 places, 515 transitions, 9000 flow [2022-01-19 00:54:31,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 688 places, 515 transitions, 8790 flow, removed 105 selfloop flow, removed 2 redundant places. [2022-01-19 00:54:31,657 INFO L242 Difference]: Finished difference. Result has 695 places, 482 transitions, 8121 flow [2022-01-19 00:54:31,658 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7556, PETRI_DIFFERENCE_MINUEND_PLACES=671, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=311, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8121, PETRI_PLACES=695, PETRI_TRANSITIONS=482} [2022-01-19 00:54:31,658 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 583 predicate places. [2022-01-19 00:54:31,658 INFO L470 AbstractCegarLoop]: Abstraction has has 695 places, 482 transitions, 8121 flow [2022-01-19 00:54:31,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:31,658 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:54:31,658 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:54:31,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-01-19 00:54:31,659 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:54:31,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:54:31,659 INFO L85 PathProgramCache]: Analyzing trace with hash -2117309622, now seen corresponding path program 17 times [2022-01-19 00:54:31,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:54:31,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141870089] [2022-01-19 00:54:31,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:54:31,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:54:31,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:54:31,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:54:31,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:54:31,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141870089] [2022-01-19 00:54:31,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141870089] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:54:31,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:54:31,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:54:31,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947816891] [2022-01-19 00:54:31,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:54:31,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:54:31,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:54:31,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:54:31,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:54:31,721 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:54:31,721 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 695 places, 482 transitions, 8121 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:31,721 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:54:31,721 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:54:31,721 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:54:33,885 INFO L129 PetriNetUnfolder]: 1795/6394 cut-off events. [2022-01-19 00:54:33,885 INFO L130 PetriNetUnfolder]: For 84137/84245 co-relation queries the response was YES. [2022-01-19 00:54:34,020 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43076 conditions, 6394 events. 1795/6394 cut-off events. For 84137/84245 co-relation queries the response was YES. Maximal size of possible extension queue 960. Compared 77068 event pairs, 200 based on Foata normal form. 8/6361 useless extension candidates. Maximal degree in co-relation 42769. Up to 1900 conditions per place. [2022-01-19 00:54:34,036 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 275 selfloop transitions, 135 changer transitions 16/535 dead transitions. [2022-01-19 00:54:34,036 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 709 places, 535 transitions, 9679 flow [2022-01-19 00:54:34,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 00:54:34,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 00:54:34,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1603 transitions. [2022-01-19 00:54:34,037 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7604364326375711 [2022-01-19 00:54:34,037 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1603 transitions. [2022-01-19 00:54:34,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1603 transitions. [2022-01-19 00:54:34,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:54:34,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1603 transitions. [2022-01-19 00:54:34,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.29411764705883) internal successors, (1603), 17 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:34,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:34,040 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:34,040 INFO L186 Difference]: Start difference. First operand has 695 places, 482 transitions, 8121 flow. Second operand 17 states and 1603 transitions. [2022-01-19 00:54:34,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 709 places, 535 transitions, 9679 flow [2022-01-19 00:54:34,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 703 places, 535 transitions, 9423 flow, removed 50 selfloop flow, removed 6 redundant places. [2022-01-19 00:54:34,845 INFO L242 Difference]: Finished difference. Result has 711 places, 504 transitions, 8707 flow [2022-01-19 00:54:34,846 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7879, PETRI_DIFFERENCE_MINUEND_PLACES=687, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=482, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=8707, PETRI_PLACES=711, PETRI_TRANSITIONS=504} [2022-01-19 00:54:34,846 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 599 predicate places. [2022-01-19 00:54:34,846 INFO L470 AbstractCegarLoop]: Abstraction has has 711 places, 504 transitions, 8707 flow [2022-01-19 00:54:34,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:34,846 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:54:34,846 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:54:34,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-01-19 00:54:34,846 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:54:34,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:54:34,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1896439110, now seen corresponding path program 18 times [2022-01-19 00:54:34,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:54:34,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779126140] [2022-01-19 00:54:34,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:54:34,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:54:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:54:34,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:54:34,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:54:34,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779126140] [2022-01-19 00:54:34,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779126140] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:54:34,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:54:34,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:54:34,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943695930] [2022-01-19 00:54:34,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:54:34,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:54:34,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:54:34,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:54:34,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:54:34,923 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:54:34,924 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 711 places, 504 transitions, 8707 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:34,924 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:54:34,924 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:54:34,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:54:37,387 INFO L129 PetriNetUnfolder]: 1869/6664 cut-off events. [2022-01-19 00:54:37,387 INFO L130 PetriNetUnfolder]: For 89616/89724 co-relation queries the response was YES. [2022-01-19 00:54:37,523 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46371 conditions, 6664 events. 1869/6664 cut-off events. For 89616/89724 co-relation queries the response was YES. Maximal size of possible extension queue 998. Compared 81099 event pairs, 212 based on Foata normal form. 8/6631 useless extension candidates. Maximal degree in co-relation 46059. Up to 1932 conditions per place. [2022-01-19 00:54:37,541 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 301 selfloop transitions, 130 changer transitions 17/557 dead transitions. [2022-01-19 00:54:37,541 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 725 places, 557 transitions, 10329 flow [2022-01-19 00:54:37,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-19 00:54:37,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-01-19 00:54:37,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1607 transitions. [2022-01-19 00:54:37,542 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7623339658444023 [2022-01-19 00:54:37,542 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1607 transitions. [2022-01-19 00:54:37,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1607 transitions. [2022-01-19 00:54:37,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:54:37,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1607 transitions. [2022-01-19 00:54:37,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 94.52941176470588) internal successors, (1607), 17 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:37,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:37,544 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 124.0) internal successors, (2232), 18 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:37,545 INFO L186 Difference]: Start difference. First operand has 711 places, 504 transitions, 8707 flow. Second operand 17 states and 1607 transitions. [2022-01-19 00:54:37,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 725 places, 557 transitions, 10329 flow [2022-01-19 00:54:38,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 723 places, 557 transitions, 10143 flow, removed 93 selfloop flow, removed 2 redundant places. [2022-01-19 00:54:38,494 INFO L242 Difference]: Finished difference. Result has 731 places, 526 transitions, 9356 flow [2022-01-19 00:54:38,495 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8527, PETRI_DIFFERENCE_MINUEND_PLACES=707, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9356, PETRI_PLACES=731, PETRI_TRANSITIONS=526} [2022-01-19 00:54:38,495 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 619 predicate places. [2022-01-19 00:54:38,495 INFO L470 AbstractCegarLoop]: Abstraction has has 731 places, 526 transitions, 9356 flow [2022-01-19 00:54:38,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:38,495 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:54:38,495 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:54:38,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-01-19 00:54:38,496 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:54:38,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:54:38,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1402188288, now seen corresponding path program 19 times [2022-01-19 00:54:38,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:54:38,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807152323] [2022-01-19 00:54:38,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:54:38,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:54:38,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:54:38,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:54:38,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:54:38,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807152323] [2022-01-19 00:54:38,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807152323] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:54:38,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:54:38,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:54:38,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113770571] [2022-01-19 00:54:38,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:54:38,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:54:38,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:54:38,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:54:38,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:54:38,559 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:54:38,559 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 731 places, 526 transitions, 9356 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:38,559 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:54:38,559 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:54:38,559 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:54:40,932 INFO L129 PetriNetUnfolder]: 1879/6832 cut-off events. [2022-01-19 00:54:40,932 INFO L130 PetriNetUnfolder]: For 95799/95907 co-relation queries the response was YES. [2022-01-19 00:54:41,093 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47838 conditions, 6832 events. 1879/6832 cut-off events. For 95799/95907 co-relation queries the response was YES. Maximal size of possible extension queue 1030. Compared 83965 event pairs, 214 based on Foata normal form. 8/6797 useless extension candidates. Maximal degree in co-relation 47519. Up to 1990 conditions per place. [2022-01-19 00:54:41,112 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 298 selfloop transitions, 135 changer transitions 21/563 dead transitions. [2022-01-19 00:54:41,112 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 746 places, 563 transitions, 10686 flow [2022-01-19 00:54:41,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:54:41,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:54:41,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1697 transitions. [2022-01-19 00:54:41,113 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7603046594982079 [2022-01-19 00:54:41,113 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1697 transitions. [2022-01-19 00:54:41,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1697 transitions. [2022-01-19 00:54:41,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:54:41,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1697 transitions. [2022-01-19 00:54:41,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.27777777777777) internal successors, (1697), 18 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:41,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:41,116 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:41,116 INFO L186 Difference]: Start difference. First operand has 731 places, 526 transitions, 9356 flow. Second operand 18 states and 1697 transitions. [2022-01-19 00:54:41,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 746 places, 563 transitions, 10686 flow [2022-01-19 00:54:42,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 743 places, 563 transitions, 10412 flow, removed 101 selfloop flow, removed 3 redundant places. [2022-01-19 00:54:42,363 INFO L242 Difference]: Finished difference. Result has 747 places, 535 transitions, 9642 flow [2022-01-19 00:54:42,364 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9116, PETRI_DIFFERENCE_MINUEND_PLACES=726, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=526, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=9642, PETRI_PLACES=747, PETRI_TRANSITIONS=535} [2022-01-19 00:54:42,364 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 635 predicate places. [2022-01-19 00:54:42,364 INFO L470 AbstractCegarLoop]: Abstraction has has 747 places, 535 transitions, 9642 flow [2022-01-19 00:54:42,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:42,364 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 00:54:42,364 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 00:54:42,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-01-19 00:54:42,364 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 00:54:42,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 00:54:42,365 INFO L85 PathProgramCache]: Analyzing trace with hash -807038490, now seen corresponding path program 20 times [2022-01-19 00:54:42,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 00:54:42,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279367560] [2022-01-19 00:54:42,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 00:54:42,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 00:54:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 00:54:42,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 00:54:42,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 00:54:42,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279367560] [2022-01-19 00:54:42,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279367560] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 00:54:42,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 00:54:42,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-01-19 00:54:42,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370017505] [2022-01-19 00:54:42,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 00:54:42,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 00:54:42,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 00:54:42,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 00:54:42,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-01-19 00:54:42,428 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2022-01-19 00:54:42,428 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 747 places, 535 transitions, 9642 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:42,428 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 00:54:42,428 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2022-01-19 00:54:42,429 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 00:54:44,843 INFO L129 PetriNetUnfolder]: 1879/6860 cut-off events. [2022-01-19 00:54:44,844 INFO L130 PetriNetUnfolder]: For 96632/96740 co-relation queries the response was YES. [2022-01-19 00:54:44,997 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47628 conditions, 6860 events. 1879/6860 cut-off events. For 96632/96740 co-relation queries the response was YES. Maximal size of possible extension queue 1042. Compared 84650 event pairs, 214 based on Foata normal form. 8/6829 useless extension candidates. Maximal degree in co-relation 47307. Up to 1956 conditions per place. [2022-01-19 00:54:45,005 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 0 selfloop transitions, 0 changer transitions 563/563 dead transitions. [2022-01-19 00:54:45,005 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 759 places, 563 transitions, 10778 flow [2022-01-19 00:54:45,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 00:54:45,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 00:54:45,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1693 transitions. [2022-01-19 00:54:45,006 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7585125448028673 [2022-01-19 00:54:45,006 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1693 transitions. [2022-01-19 00:54:45,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1693 transitions. [2022-01-19 00:54:45,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 00:54:45,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1693 transitions. [2022-01-19 00:54:45,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 94.05555555555556) internal successors, (1693), 18 states have internal predecessors, (1693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:45,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:45,009 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:45,009 INFO L186 Difference]: Start difference. First operand has 747 places, 535 transitions, 9642 flow. Second operand 18 states and 1693 transitions. [2022-01-19 00:54:45,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 759 places, 563 transitions, 10778 flow [2022-01-19 00:54:46,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 743 places, 563 transitions, 10579 flow, removed 66 selfloop flow, removed 16 redundant places. [2022-01-19 00:54:46,064 INFO L242 Difference]: Finished difference. Result has 743 places, 0 transitions, 0 flow [2022-01-19 00:54:46,065 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9435, PETRI_DIFFERENCE_MINUEND_PLACES=726, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=0, PETRI_PLACES=743, PETRI_TRANSITIONS=0} [2022-01-19 00:54:46,065 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 631 predicate places. [2022-01-19 00:54:46,065 INFO L470 AbstractCegarLoop]: Abstraction has has 743 places, 0 transitions, 0 flow [2022-01-19 00:54:46,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 00:54:46,067 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 00:54:46,067 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-19 00:54:46,067 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-19 00:54:46,068 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-19 00:54:46,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-01-19 00:54:46,071 INFO L732 BasicCegarLoop]: Path program histogram: [20, 20, 12, 11, 8, 8, 1, 1, 1] [2022-01-19 00:54:46,072 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 00:54:46,072 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 00:54:46,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 12:54:46 BasicIcfg [2022-01-19 00:54:46,074 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 00:54:46,074 INFO L158 Benchmark]: Toolchain (without parser) took 131437.82ms. Allocated memory was 358.6MB in the beginning and 13.7GB in the end (delta: 13.4GB). Free memory was 306.4MB in the beginning and 7.9GB in the end (delta: -7.6GB). Peak memory consumption was 5.8GB. Max. memory is 16.0GB. [2022-01-19 00:54:46,075 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 358.6MB. Free memory is still 322.6MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 00:54:46,075 INFO L158 Benchmark]: CACSL2BoogieTranslator took 193.44ms. Allocated memory is still 358.6MB. Free memory was 306.3MB in the beginning and 331.4MB in the end (delta: -25.2MB). Peak memory consumption was 19.3MB. Max. memory is 16.0GB. [2022-01-19 00:54:46,075 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.39ms. Allocated memory is still 358.6MB. Free memory was 331.4MB in the beginning and 330.5MB in the end (delta: 969.0kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 00:54:46,075 INFO L158 Benchmark]: Boogie Preprocessor took 17.78ms. Allocated memory is still 358.6MB. Free memory was 330.5MB in the beginning and 328.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 00:54:46,075 INFO L158 Benchmark]: RCFGBuilder took 279.00ms. Allocated memory is still 358.6MB. Free memory was 328.4MB in the beginning and 314.2MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2022-01-19 00:54:46,075 INFO L158 Benchmark]: TraceAbstraction took 130900.55ms. Allocated memory was 358.6MB in the beginning and 13.7GB in the end (delta: 13.4GB). Free memory was 314.2MB in the beginning and 7.9GB in the end (delta: -7.6GB). Peak memory consumption was 5.8GB. Max. memory is 16.0GB. [2022-01-19 00:54:46,076 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 358.6MB. Free memory is still 322.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 193.44ms. Allocated memory is still 358.6MB. Free memory was 306.3MB in the beginning and 331.4MB in the end (delta: -25.2MB). Peak memory consumption was 19.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 41.39ms. Allocated memory is still 358.6MB. Free memory was 331.4MB in the beginning and 330.5MB in the end (delta: 969.0kB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 17.78ms. Allocated memory is still 358.6MB. Free memory was 330.5MB in the beginning and 328.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 279.00ms. Allocated memory is still 358.6MB. Free memory was 328.4MB in the beginning and 314.2MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 130900.55ms. Allocated memory was 358.6MB in the beginning and 13.7GB in the end (delta: 13.4GB). Free memory was 314.2MB in the beginning and 7.9GB in the end (delta: -7.6GB). Peak memory consumption was 5.8GB. 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 - PositiveResult [Line: 77]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 156 locations, 4 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: 130.8s, OverallIterations: 82, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 124.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3741 SdHoareTripleChecker+Valid, 6.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3741 mSDsluCounter, 12248 SdHoareTripleChecker+Invalid, 5.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14451 mSDsCounter, 366 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14398 IncrementalHoareTripleChecker+Invalid, 14764 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 366 mSolverCounterUnsat, 2666 mSDtfsCounter, 14398 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1664 GetRequests, 617 SyntacticMatches, 0 SemanticMatches, 1047 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3645 ImplicationChecksByTransitivity, 5.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13038occurred in iteration=40, InterpolantAutomatonStates: 1013, 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, 0.7s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 7462 NumberOfCodeBlocks, 7462 NumberOfCodeBlocksAsserted, 82 NumberOfCheckSat, 7380 ConstructedInterpolants, 0 QuantifiedInterpolants, 31311 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 82 InterpolantComputations, 82 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-01-19 00:54:46,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...