/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-After.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-word-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 13:19:54,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 13:19:54,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 13:19:54,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 13:19:54,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 13:19:54,802 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 13:19:54,805 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 13:19:54,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 13:19:54,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 13:19:54,812 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 13:19:54,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 13:19:54,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 13:19:54,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 13:19:54,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 13:19:54,815 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 13:19:54,816 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 13:19:54,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 13:19:54,816 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 13:19:54,817 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 13:19:54,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 13:19:54,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 13:19:54,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 13:19:54,820 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 13:19:54,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 13:19:54,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 13:19:54,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 13:19:54,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 13:19:54,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 13:19:54,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 13:19:54,826 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 13:19:54,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 13:19:54,827 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 13:19:54,827 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 13:19:54,828 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 13:19:54,828 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 13:19:54,828 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 13:19:54,829 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 13:19:54,829 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 13:19:54,829 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 13:19:54,829 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 13:19:54,830 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 13:19:54,833 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-After.epf [2022-01-19 13:19:54,856 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 13:19:54,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 13:19:54,857 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 13:19:54,857 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 13:19:54,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 13:19:54,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 13:19:54,857 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 13:19:54,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 13:19:54,857 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 13:19:54,857 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 13:19:54,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 13:19:54,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 13:19:54,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 13:19:54,858 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 13:19:54,858 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 13:19:54,858 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 13:19:54,858 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 13:19:54,859 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 13:19:54,859 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 13:19:54,859 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 13:19:54,859 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 13:19:54,859 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 13:19:54,859 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 13:19:54,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 13:19:54,859 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 13:19:54,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 13:19:54,859 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 13:19:54,860 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 13:19:54,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 13:19:54,860 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 13:19:54,860 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 13:19:54,860 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=AFTER [2022-01-19 13:19:54,860 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 13:19:55,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 13:19:55,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 13:19:55,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 13:19:55,072 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 13:19:55,073 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 13:19:55,073 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-subst.wvr.c [2022-01-19 13:19:55,123 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16196a59e/105638a23c96434586fe25212020612c/FLAG284c0f0d4 [2022-01-19 13:19:55,475 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 13:19:55,475 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-subst.wvr.c [2022-01-19 13:19:55,479 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16196a59e/105638a23c96434586fe25212020612c/FLAG284c0f0d4 [2022-01-19 13:19:55,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16196a59e/105638a23c96434586fe25212020612c [2022-01-19 13:19:55,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 13:19:55,490 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 13:19:55,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 13:19:55,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 13:19:55,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 13:19:55,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 01:19:55" (1/1) ... [2022-01-19 13:19:55,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36b9b83e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:19:55, skipping insertion in model container [2022-01-19 13:19:55,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 01:19:55" (1/1) ... [2022-01-19 13:19:55,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 13:19:55,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 13:19:55,655 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-word-subst.wvr.c[3345,3358] [2022-01-19 13:19:55,664 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 13:19:55,669 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 13:19:55,692 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-word-subst.wvr.c[3345,3358] [2022-01-19 13:19:55,695 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 13:19:55,703 INFO L208 MainTranslator]: Completed translation [2022-01-19 13:19:55,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:19:55 WrapperNode [2022-01-19 13:19:55,704 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 13:19:55,705 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 13:19:55,705 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 13:19:55,705 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 13:19:55,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:19:55" (1/1) ... [2022-01-19 13:19:55,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:19:55" (1/1) ... [2022-01-19 13:19:55,732 INFO L137 Inliner]: procedures = 25, calls = 45, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 176 [2022-01-19 13:19:55,732 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 13:19:55,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 13:19:55,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 13:19:55,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 13:19:55,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:19:55" (1/1) ... [2022-01-19 13:19:55,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:19:55" (1/1) ... [2022-01-19 13:19:55,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:19:55" (1/1) ... [2022-01-19 13:19:55,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:19:55" (1/1) ... [2022-01-19 13:19:55,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:19:55" (1/1) ... [2022-01-19 13:19:55,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:19:55" (1/1) ... [2022-01-19 13:19:55,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:19:55" (1/1) ... [2022-01-19 13:19:55,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 13:19:55,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 13:19:55,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 13:19:55,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 13:19:55,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:19:55" (1/1) ... [2022-01-19 13:19:55,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 13:19:55,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:19:55,778 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 13:19:55,781 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 13:19:55,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 13:19:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 13:19:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 13:19:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 13:19:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 13:19:55,809 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 13:19:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 13:19:55,809 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 13:19:55,809 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 13:19:55,810 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 13:19:55,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 13:19:55,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-19 13:19:55,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 13:19:55,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 13:19:55,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 13:19:55,811 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 13:19:55,883 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 13:19:55,885 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 13:19:56,203 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 13:19:56,210 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 13:19:56,211 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-01-19 13:19:56,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 01:19:56 BoogieIcfgContainer [2022-01-19 13:19:56,212 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 13:19:56,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 13:19:56,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 13:19:56,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 13:19:56,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 01:19:55" (1/3) ... [2022-01-19 13:19:56,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce8b967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 01:19:56, skipping insertion in model container [2022-01-19 13:19:56,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 01:19:55" (2/3) ... [2022-01-19 13:19:56,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce8b967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 01:19:56, skipping insertion in model container [2022-01-19 13:19:56,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 01:19:56" (3/3) ... [2022-01-19 13:19:56,217 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-word-subst.wvr.c [2022-01-19 13:19:56,220 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 13:19:56,220 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 13:19:56,221 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 13:19:56,261 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,261 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,261 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,262 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,262 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,262 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,262 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,263 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,263 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,263 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,263 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,263 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,263 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,264 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,264 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,264 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,264 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,264 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,264 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,264 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,265 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,265 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,265 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,265 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,265 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,265 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,265 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,265 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,266 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,266 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,266 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,266 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,266 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,266 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,266 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,266 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,267 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,267 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,267 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,267 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,267 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,267 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,267 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,267 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,267 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,268 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,268 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,268 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,268 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,268 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,268 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,268 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,268 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,268 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,269 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,269 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,269 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,269 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,269 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,269 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,269 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,269 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,270 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,270 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,270 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,270 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,270 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,270 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,270 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,270 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,271 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,271 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,271 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,271 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,271 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,271 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,271 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,271 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,271 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,272 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,272 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,272 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,272 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,272 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,272 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,272 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,272 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,272 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,273 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,273 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,273 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,273 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,273 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,274 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,274 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,274 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,274 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,275 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,275 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,275 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,275 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,275 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,275 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,275 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,276 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,276 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,276 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,276 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,276 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,276 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,276 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,277 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,277 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,277 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,277 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,277 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,277 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,277 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,278 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,278 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,278 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,278 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,278 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,278 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,278 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,278 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,278 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,279 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,279 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,279 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,279 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,279 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,279 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,279 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,279 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,279 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,279 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,280 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,280 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,280 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,280 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,280 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,280 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,280 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,280 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,281 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,281 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,281 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,281 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,281 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,281 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,281 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,282 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,282 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,282 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,282 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,282 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,282 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,282 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,282 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,283 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,283 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,283 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,283 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,283 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,283 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,283 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,283 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,283 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,284 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,284 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,284 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,284 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,284 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,284 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,284 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,285 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,285 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,285 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,285 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,285 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,285 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,286 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,286 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,286 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,286 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,286 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,287 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,287 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,287 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,287 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,287 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,287 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,287 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,288 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,288 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,288 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,288 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,288 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,288 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,288 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,288 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,289 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,289 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,289 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,289 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,289 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,289 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,289 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,290 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,290 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,290 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,290 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,290 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,290 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,290 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,290 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,290 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,291 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,303 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,303 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,303 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,303 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,303 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,303 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,304 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,304 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,304 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,304 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,304 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,304 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,304 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,304 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,304 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,305 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,305 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,305 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,305 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,305 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,305 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,305 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,306 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,306 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,306 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,306 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,306 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,306 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,306 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,307 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,307 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,307 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,307 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,307 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,307 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,307 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,307 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,307 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,308 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,308 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,308 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,308 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,308 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,308 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,308 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,310 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite20| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,310 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~ite21| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,311 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,311 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,311 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,311 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork0_~stop~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,311 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~post15| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,311 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem19| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,311 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem18| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,311 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem17| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,311 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork0_#t~mem16| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,313 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,313 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,313 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,313 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,313 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,313 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,313 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,313 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,313 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,314 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~stop~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,314 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,314 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,314 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,314 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,315 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,315 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_~stop~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,315 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,315 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~ite14| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,315 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,315 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,315 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,315 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~mem10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 13:19:56,317 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-19 13:19:56,351 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 13:19:56,355 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 13:19:56,355 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 13:19:56,365 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 315 places, 340 transitions, 704 flow [2022-01-19 13:19:56,448 INFO L129 PetriNetUnfolder]: 35/337 cut-off events. [2022-01-19 13:19:56,448 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 13:19:56,464 INFO L84 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 337 events. 35/337 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 507 event pairs, 0 based on Foata normal form. 0/301 useless extension candidates. Maximal degree in co-relation 261. Up to 3 conditions per place. [2022-01-19 13:19:56,465 INFO L82 GeneralOperation]: Start removeDead. Operand has 315 places, 340 transitions, 704 flow [2022-01-19 13:19:56,470 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 301 places, 326 transitions, 670 flow [2022-01-19 13:19:56,529 INFO L129 PetriNetUnfolder]: 35/325 cut-off events. [2022-01-19 13:19:56,529 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 13:19:56,529 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:56,530 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:19:56,531 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 13:19:56,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:56,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1863076525, now seen corresponding path program 1 times [2022-01-19 13:19:56,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:56,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465327193] [2022-01-19 13:19:56,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:56,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:56,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:19:56,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:56,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465327193] [2022-01-19 13:19:56,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465327193] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:56,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:56,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 13:19:56,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785213842] [2022-01-19 13:19:56,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:56,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 13:19:56,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:56,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 13:19:56,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 13:19:56,817 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 319 out of 340 [2022-01-19 13:19:56,822 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 326 transitions, 670 flow. Second operand has 2 states, 2 states have (on average 324.0) internal successors, (648), 2 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:56,823 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:56,823 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 319 of 340 [2022-01-19 13:19:56,824 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:56,897 INFO L129 PetriNetUnfolder]: 21/312 cut-off events. [2022-01-19 13:19:56,898 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-01-19 13:19:56,901 INFO L84 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 312 events. 21/312 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 499 event pairs, 0 based on Foata normal form. 20/303 useless extension candidates. Maximal degree in co-relation 252. Up to 7 conditions per place. [2022-01-19 13:19:56,903 INFO L132 encePairwiseOnDemand]: 326/340 looper letters, 6 selfloop transitions, 0 changer transitions 8/312 dead transitions. [2022-01-19 13:19:56,903 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 312 transitions, 654 flow [2022-01-19 13:19:56,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 13:19:56,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 13:19:56,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 658 transitions. [2022-01-19 13:19:56,917 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9676470588235294 [2022-01-19 13:19:56,918 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 658 transitions. [2022-01-19 13:19:56,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 658 transitions. [2022-01-19 13:19:56,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:56,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 658 transitions. [2022-01-19 13:19:56,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 329.0) internal successors, (658), 2 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 13:19:56,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:56,948 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 340.0) internal successors, (1020), 3 states have internal predecessors, (1020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:56,949 INFO L186 Difference]: Start difference. First operand has 301 places, 326 transitions, 670 flow. Second operand 2 states and 658 transitions. [2022-01-19 13:19:56,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 312 transitions, 654 flow [2022-01-19 13:19:56,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 312 transitions, 642 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-01-19 13:19:56,961 INFO L242 Difference]: Finished difference. Result has 296 places, 304 transitions, 614 flow [2022-01-19 13:19:56,963 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=630, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=614, PETRI_PLACES=296, PETRI_TRANSITIONS=304} [2022-01-19 13:19:56,966 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, -5 predicate places. [2022-01-19 13:19:56,966 INFO L470 AbstractCegarLoop]: Abstraction has has 296 places, 304 transitions, 614 flow [2022-01-19 13:19:56,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 324.0) internal successors, (648), 2 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:56,967 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:56,967 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:19:56,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 13:19:56,968 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 13:19:56,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:56,969 INFO L85 PathProgramCache]: Analyzing trace with hash -727196831, now seen corresponding path program 1 times [2022-01-19 13:19:56,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:56,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157738512] [2022-01-19 13:19:56,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:56,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:57,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:19:57,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:57,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157738512] [2022-01-19 13:19:57,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157738512] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:57,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:57,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 13:19:57,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119707021] [2022-01-19 13:19:57,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:57,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 13:19:57,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:57,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 13:19:57,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 13:19:57,141 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 340 [2022-01-19 13:19:57,141 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 304 transitions, 614 flow. Second operand has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:57,142 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:57,142 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 340 [2022-01-19 13:19:57,142 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:57,221 INFO L129 PetriNetUnfolder]: 50/489 cut-off events. [2022-01-19 13:19:57,222 INFO L130 PetriNetUnfolder]: For 6/8 co-relation queries the response was YES. [2022-01-19 13:19:57,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 539 conditions, 489 events. 50/489 cut-off events. For 6/8 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1520 event pairs, 4 based on Foata normal form. 0/445 useless extension candidates. Maximal degree in co-relation 536. Up to 22 conditions per place. [2022-01-19 13:19:57,226 INFO L132 encePairwiseOnDemand]: 337/340 looper letters, 14 selfloop transitions, 2 changer transitions 0/310 dead transitions. [2022-01-19 13:19:57,226 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 310 transitions, 663 flow [2022-01-19 13:19:57,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 13:19:57,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 13:19:57,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 962 transitions. [2022-01-19 13:19:57,228 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9431372549019608 [2022-01-19 13:19:57,228 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 962 transitions. [2022-01-19 13:19:57,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 962 transitions. [2022-01-19 13:19:57,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:57,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 962 transitions. [2022-01-19 13:19:57,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.6666666666667) internal successors, (962), 3 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:57,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:57,233 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:57,233 INFO L186 Difference]: Start difference. First operand has 296 places, 304 transitions, 614 flow. Second operand 3 states and 962 transitions. [2022-01-19 13:19:57,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 310 transitions, 663 flow [2022-01-19 13:19:57,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 310 transitions, 663 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 13:19:57,239 INFO L242 Difference]: Finished difference. Result has 291 places, 304 transitions, 622 flow [2022-01-19 13:19:57,240 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=622, PETRI_PLACES=291, PETRI_TRANSITIONS=304} [2022-01-19 13:19:57,240 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, -10 predicate places. [2022-01-19 13:19:57,241 INFO L470 AbstractCegarLoop]: Abstraction has has 291 places, 304 transitions, 622 flow [2022-01-19 13:19:57,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:57,241 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:57,241 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:19:57,242 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 13:19:57,242 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 13:19:57,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:57,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1012256445, now seen corresponding path program 1 times [2022-01-19 13:19:57,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:57,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064688691] [2022-01-19 13:19:57,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:57,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:57,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:57,345 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 13:19:57,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:57,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064688691] [2022-01-19 13:19:57,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064688691] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:57,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:57,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 13:19:57,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869511193] [2022-01-19 13:19:57,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:57,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 13:19:57,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:57,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 13:19:57,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 13:19:57,349 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 340 [2022-01-19 13:19:57,350 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 304 transitions, 622 flow. Second operand has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:57,350 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:57,350 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 340 [2022-01-19 13:19:57,350 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:57,462 INFO L129 PetriNetUnfolder]: 59/555 cut-off events. [2022-01-19 13:19:57,462 INFO L130 PetriNetUnfolder]: For 29/31 co-relation queries the response was YES. [2022-01-19 13:19:57,464 INFO L84 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 555 events. 59/555 cut-off events. For 29/31 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1896 event pairs, 12 based on Foata normal form. 0/507 useless extension candidates. Maximal degree in co-relation 618. Up to 37 conditions per place. [2022-01-19 13:19:57,466 INFO L132 encePairwiseOnDemand]: 337/340 looper letters, 12 selfloop transitions, 2 changer transitions 0/308 dead transitions. [2022-01-19 13:19:57,466 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 308 transitions, 661 flow [2022-01-19 13:19:57,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 13:19:57,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 13:19:57,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 960 transitions. [2022-01-19 13:19:57,468 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9411764705882353 [2022-01-19 13:19:57,468 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 960 transitions. [2022-01-19 13:19:57,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 960 transitions. [2022-01-19 13:19:57,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:57,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 960 transitions. [2022-01-19 13:19:57,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.0) internal successors, (960), 3 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:57,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:57,473 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:57,473 INFO L186 Difference]: Start difference. First operand has 291 places, 304 transitions, 622 flow. Second operand 3 states and 960 transitions. [2022-01-19 13:19:57,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 308 transitions, 661 flow [2022-01-19 13:19:57,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 308 transitions, 657 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 13:19:57,478 INFO L242 Difference]: Finished difference. Result has 292 places, 304 transitions, 626 flow [2022-01-19 13:19:57,479 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=618, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=626, PETRI_PLACES=292, PETRI_TRANSITIONS=304} [2022-01-19 13:19:57,481 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, -9 predicate places. [2022-01-19 13:19:57,481 INFO L470 AbstractCegarLoop]: Abstraction has has 292 places, 304 transitions, 626 flow [2022-01-19 13:19:57,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:57,482 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:57,482 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:19:57,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 13:19:57,482 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 13:19:57,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:57,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1896015817, now seen corresponding path program 1 times [2022-01-19 13:19:57,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:57,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400391311] [2022-01-19 13:19:57,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:57,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:57,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:19:57,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:57,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400391311] [2022-01-19 13:19:57,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400391311] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:57,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:57,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 13:19:57,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823851069] [2022-01-19 13:19:57,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:57,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 13:19:57,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:57,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 13:19:57,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 13:19:57,552 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 315 out of 340 [2022-01-19 13:19:57,553 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 304 transitions, 626 flow. Second operand has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:57,553 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:57,553 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 315 of 340 [2022-01-19 13:19:57,553 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:19:57,632 INFO L129 PetriNetUnfolder]: 48/577 cut-off events. [2022-01-19 13:19:57,632 INFO L130 PetriNetUnfolder]: For 25/29 co-relation queries the response was YES. [2022-01-19 13:19:57,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 649 conditions, 577 events. 48/577 cut-off events. For 25/29 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2014 event pairs, 9 based on Foata normal form. 0/531 useless extension candidates. Maximal degree in co-relation 643. Up to 33 conditions per place. [2022-01-19 13:19:57,636 INFO L132 encePairwiseOnDemand]: 337/340 looper letters, 13 selfloop transitions, 2 changer transitions 0/309 dead transitions. [2022-01-19 13:19:57,637 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 309 transitions, 670 flow [2022-01-19 13:19:57,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 13:19:57,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 13:19:57,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 961 transitions. [2022-01-19 13:19:57,639 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.942156862745098 [2022-01-19 13:19:57,639 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 961 transitions. [2022-01-19 13:19:57,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 961 transitions. [2022-01-19 13:19:57,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:19:57,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 961 transitions. [2022-01-19 13:19:57,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 320.3333333333333) internal successors, (961), 3 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:57,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:57,643 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 340.0) internal successors, (1360), 4 states have internal predecessors, (1360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:57,643 INFO L186 Difference]: Start difference. First operand has 292 places, 304 transitions, 626 flow. Second operand 3 states and 961 transitions. [2022-01-19 13:19:57,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 309 transitions, 670 flow [2022-01-19 13:19:57,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 309 transitions, 666 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 13:19:57,648 INFO L242 Difference]: Finished difference. Result has 293 places, 304 transitions, 630 flow [2022-01-19 13:19:57,648 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=622, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=630, PETRI_PLACES=293, PETRI_TRANSITIONS=304} [2022-01-19 13:19:57,649 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, -8 predicate places. [2022-01-19 13:19:57,649 INFO L470 AbstractCegarLoop]: Abstraction has has 293 places, 304 transitions, 630 flow [2022-01-19 13:19:57,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 317.6666666666667) internal successors, (953), 3 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:57,650 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:19:57,650 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:19:57,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 13:19:57,650 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 13:19:57,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:19:57,651 INFO L85 PathProgramCache]: Analyzing trace with hash -644485703, now seen corresponding path program 1 times [2022-01-19 13:19:57,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:19:57,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631280359] [2022-01-19 13:19:57,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:19:57,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:19:57,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:19:58,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:19:58,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:19:58,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631280359] [2022-01-19 13:19:58,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631280359] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:19:58,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:19:58,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-01-19 13:19:58,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432316159] [2022-01-19 13:19:58,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:19:58,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-01-19 13:19:58,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:19:58,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-01-19 13:19:58,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=492, Unknown=0, NotChecked=0, Total=552 [2022-01-19 13:19:58,318 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 340 [2022-01-19 13:19:58,323 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 304 transitions, 630 flow. Second operand has 24 states, 24 states have (on average 227.95833333333334) internal successors, (5471), 24 states have internal predecessors, (5471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:19:58,323 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:19:58,323 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 340 [2022-01-19 13:19:58,323 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:01,337 INFO L129 PetriNetUnfolder]: 3486/12164 cut-off events. [2022-01-19 13:20:01,338 INFO L130 PetriNetUnfolder]: For 591/591 co-relation queries the response was YES. [2022-01-19 13:20:01,408 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17945 conditions, 12164 events. 3486/12164 cut-off events. For 591/591 co-relation queries the response was YES. Maximal size of possible extension queue 454. Compared 132684 event pairs, 1817 based on Foata normal form. 8/10465 useless extension candidates. Maximal degree in co-relation 17938. Up to 1584 conditions per place. [2022-01-19 13:20:01,447 INFO L132 encePairwiseOnDemand]: 302/340 looper letters, 203 selfloop transitions, 35 changer transitions 12/462 dead transitions. [2022-01-19 13:20:01,447 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 462 transitions, 1467 flow [2022-01-19 13:20:01,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 13:20:01,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 13:20:01,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 8126 transitions. [2022-01-19 13:20:01,458 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6828571428571428 [2022-01-19 13:20:01,458 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 8126 transitions. [2022-01-19 13:20:01,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 8126 transitions. [2022-01-19 13:20:01,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:01,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 8126 transitions. [2022-01-19 13:20:01,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 232.17142857142858) internal successors, (8126), 35 states have internal predecessors, (8126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:01,484 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 340.0) internal successors, (12240), 36 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:01,486 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 340.0) internal successors, (12240), 36 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:01,487 INFO L186 Difference]: Start difference. First operand has 293 places, 304 transitions, 630 flow. Second operand 35 states and 8126 transitions. [2022-01-19 13:20:01,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 462 transitions, 1467 flow [2022-01-19 13:20:01,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 462 transitions, 1463 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 13:20:01,495 INFO L242 Difference]: Finished difference. Result has 346 places, 327 transitions, 832 flow [2022-01-19 13:20:01,495 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=832, PETRI_PLACES=346, PETRI_TRANSITIONS=327} [2022-01-19 13:20:01,496 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 45 predicate places. [2022-01-19 13:20:01,496 INFO L470 AbstractCegarLoop]: Abstraction has has 346 places, 327 transitions, 832 flow [2022-01-19 13:20:01,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 227.95833333333334) internal successors, (5471), 24 states have internal predecessors, (5471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:01,497 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:01,497 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:20:01,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 13:20:01,498 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 13:20:01,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:01,498 INFO L85 PathProgramCache]: Analyzing trace with hash 774995195, now seen corresponding path program 2 times [2022-01-19 13:20:01,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:01,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069546468] [2022-01-19 13:20:01,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:01,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:02,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:20:02,195 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:02,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069546468] [2022-01-19 13:20:02,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069546468] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:02,196 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:02,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-01-19 13:20:02,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704812199] [2022-01-19 13:20:02,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:02,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-19 13:20:02,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:02,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-19 13:20:02,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-01-19 13:20:02,200 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 340 [2022-01-19 13:20:02,204 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 327 transitions, 832 flow. Second operand has 27 states, 27 states have (on average 227.7037037037037) internal successors, (6148), 27 states have internal predecessors, (6148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:02,204 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:02,204 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 340 [2022-01-19 13:20:02,204 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:06,129 INFO L129 PetriNetUnfolder]: 4619/18481 cut-off events. [2022-01-19 13:20:06,130 INFO L130 PetriNetUnfolder]: For 3301/3339 co-relation queries the response was YES. [2022-01-19 13:20:06,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29141 conditions, 18481 events. 4619/18481 cut-off events. For 3301/3339 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 223761 event pairs, 2406 based on Foata normal form. 19/15946 useless extension candidates. Maximal degree in co-relation 29113. Up to 2682 conditions per place. [2022-01-19 13:20:06,256 INFO L132 encePairwiseOnDemand]: 303/340 looper letters, 231 selfloop transitions, 38 changer transitions 12/493 dead transitions. [2022-01-19 13:20:06,256 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 493 transitions, 1887 flow [2022-01-19 13:20:06,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-01-19 13:20:06,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-01-19 13:20:06,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 8601 transitions. [2022-01-19 13:20:06,267 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6837042925278219 [2022-01-19 13:20:06,268 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 8601 transitions. [2022-01-19 13:20:06,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 8601 transitions. [2022-01-19 13:20:06,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:06,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 8601 transitions. [2022-01-19 13:20:06,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 232.45945945945945) internal successors, (8601), 37 states have internal predecessors, (8601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:06,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 340.0) internal successors, (12920), 38 states have internal predecessors, (12920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:06,301 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 340.0) internal successors, (12920), 38 states have internal predecessors, (12920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:06,301 INFO L186 Difference]: Start difference. First operand has 346 places, 327 transitions, 832 flow. Second operand 37 states and 8601 transitions. [2022-01-19 13:20:06,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 493 transitions, 1887 flow [2022-01-19 13:20:06,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 493 transitions, 1805 flow, removed 35 selfloop flow, removed 12 redundant places. [2022-01-19 13:20:06,331 INFO L242 Difference]: Finished difference. Result has 376 places, 337 transitions, 985 flow [2022-01-19 13:20:06,332 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=985, PETRI_PLACES=376, PETRI_TRANSITIONS=337} [2022-01-19 13:20:06,334 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 75 predicate places. [2022-01-19 13:20:06,334 INFO L470 AbstractCegarLoop]: Abstraction has has 376 places, 337 transitions, 985 flow [2022-01-19 13:20:06,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 227.7037037037037) internal successors, (6148), 27 states have internal predecessors, (6148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:06,335 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:06,335 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:20:06,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 13:20:06,335 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 13:20:06,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:06,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1654135811, now seen corresponding path program 3 times [2022-01-19 13:20:06,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:06,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107418395] [2022-01-19 13:20:06,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:06,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:07,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:20:07,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:07,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107418395] [2022-01-19 13:20:07,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107418395] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:07,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:07,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [34] imperfect sequences [] total 34 [2022-01-19 13:20:07,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725696533] [2022-01-19 13:20:07,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:07,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-01-19 13:20:07,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:07,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-01-19 13:20:07,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=1021, Unknown=0, NotChecked=0, Total=1122 [2022-01-19 13:20:07,270 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 340 [2022-01-19 13:20:07,274 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 337 transitions, 985 flow. Second operand has 34 states, 34 states have (on average 224.1764705882353) internal successors, (7622), 34 states have internal predecessors, (7622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:07,275 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:07,275 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 340 [2022-01-19 13:20:07,275 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:12,499 INFO L129 PetriNetUnfolder]: 6090/22974 cut-off events. [2022-01-19 13:20:12,499 INFO L130 PetriNetUnfolder]: For 6886/6891 co-relation queries the response was YES. [2022-01-19 13:20:12,610 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37550 conditions, 22974 events. 6090/22974 cut-off events. For 6886/6891 co-relation queries the response was YES. Maximal size of possible extension queue 827. Compared 288022 event pairs, 3330 based on Foata normal form. 10/19953 useless extension candidates. Maximal degree in co-relation 37515. Up to 1765 conditions per place. [2022-01-19 13:20:12,689 INFO L132 encePairwiseOnDemand]: 302/340 looper letters, 283 selfloop transitions, 42 changer transitions 13/547 dead transitions. [2022-01-19 13:20:12,689 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 547 transitions, 2228 flow [2022-01-19 13:20:12,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-19 13:20:12,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-01-19 13:20:12,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 9881 transitions. [2022-01-19 13:20:12,713 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6758549931600547 [2022-01-19 13:20:12,713 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 9881 transitions. [2022-01-19 13:20:12,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 9881 transitions. [2022-01-19 13:20:12,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:12,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 9881 transitions. [2022-01-19 13:20:12,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 229.7906976744186) internal successors, (9881), 43 states have internal predecessors, (9881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:12,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 340.0) internal successors, (14960), 44 states have internal predecessors, (14960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:12,874 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 340.0) internal successors, (14960), 44 states have internal predecessors, (14960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:12,874 INFO L186 Difference]: Start difference. First operand has 376 places, 337 transitions, 985 flow. Second operand 43 states and 9881 transitions. [2022-01-19 13:20:12,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 547 transitions, 2228 flow [2022-01-19 13:20:12,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 547 transitions, 2141 flow, removed 15 selfloop flow, removed 25 redundant places. [2022-01-19 13:20:12,898 INFO L242 Difference]: Finished difference. Result has 400 places, 340 transitions, 1055 flow [2022-01-19 13:20:12,898 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=924, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=1055, PETRI_PLACES=400, PETRI_TRANSITIONS=340} [2022-01-19 13:20:12,899 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 99 predicate places. [2022-01-19 13:20:12,899 INFO L470 AbstractCegarLoop]: Abstraction has has 400 places, 340 transitions, 1055 flow [2022-01-19 13:20:12,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 224.1764705882353) internal successors, (7622), 34 states have internal predecessors, (7622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:12,900 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:12,900 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:20:12,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-19 13:20:12,901 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 13:20:12,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:12,901 INFO L85 PathProgramCache]: Analyzing trace with hash 855339755, now seen corresponding path program 1 times [2022-01-19 13:20:12,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:12,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355993584] [2022-01-19 13:20:12,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:12,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:12,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:20:12,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:12,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355993584] [2022-01-19 13:20:12,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355993584] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:12,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:12,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 13:20:12,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551647710] [2022-01-19 13:20:12,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:12,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 13:20:12,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:12,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 13:20:12,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 13:20:12,939 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:20:12,939 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 340 transitions, 1055 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:12,940 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:12,940 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:20:12,940 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:14,937 INFO L129 PetriNetUnfolder]: 2579/17203 cut-off events. [2022-01-19 13:20:14,937 INFO L130 PetriNetUnfolder]: For 3056/3222 co-relation queries the response was YES. [2022-01-19 13:20:15,013 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24275 conditions, 17203 events. 2579/17203 cut-off events. For 3056/3222 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 225731 event pairs, 1106 based on Foata normal form. 12/14899 useless extension candidates. Maximal degree in co-relation 24233. Up to 1742 conditions per place. [2022-01-19 13:20:15,046 INFO L132 encePairwiseOnDemand]: 335/340 looper letters, 38 selfloop transitions, 3 changer transitions 0/357 dead transitions. [2022-01-19 13:20:15,046 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 357 transitions, 1178 flow [2022-01-19 13:20:15,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 13:20:15,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 13:20:15,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1247 transitions. [2022-01-19 13:20:15,048 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9169117647058823 [2022-01-19 13:20:15,048 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1247 transitions. [2022-01-19 13:20:15,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1247 transitions. [2022-01-19 13:20:15,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:15,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1247 transitions. [2022-01-19 13:20:15,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 311.75) internal successors, (1247), 4 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:15,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 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 13:20:15,051 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 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 13:20:15,051 INFO L186 Difference]: Start difference. First operand has 400 places, 340 transitions, 1055 flow. Second operand 4 states and 1247 transitions. [2022-01-19 13:20:15,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 357 transitions, 1178 flow [2022-01-19 13:20:15,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 357 transitions, 1058 flow, removed 12 selfloop flow, removed 42 redundant places. [2022-01-19 13:20:15,098 INFO L242 Difference]: Finished difference. Result has 357 places, 341 transitions, 953 flow [2022-01-19 13:20:15,098 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=953, PETRI_PLACES=357, PETRI_TRANSITIONS=341} [2022-01-19 13:20:15,099 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 56 predicate places. [2022-01-19 13:20:15,099 INFO L470 AbstractCegarLoop]: Abstraction has has 357 places, 341 transitions, 953 flow [2022-01-19 13:20:15,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:15,099 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:15,099 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:20:15,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 13:20:15,100 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 13:20:15,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:15,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1552621851, now seen corresponding path program 2 times [2022-01-19 13:20:15,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:15,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615286387] [2022-01-19 13:20:15,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:15,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:15,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:20:15,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:15,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615286387] [2022-01-19 13:20:15,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615286387] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:15,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:15,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 13:20:15,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493735717] [2022-01-19 13:20:15,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:15,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 13:20:15,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:15,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 13:20:15,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 13:20:15,137 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:20:15,138 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 341 transitions, 953 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:15,138 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:15,138 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:20:15,138 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:18,049 INFO L129 PetriNetUnfolder]: 3384/26777 cut-off events. [2022-01-19 13:20:18,049 INFO L130 PetriNetUnfolder]: For 6136/6452 co-relation queries the response was YES. [2022-01-19 13:20:18,190 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36256 conditions, 26777 events. 3384/26777 cut-off events. For 6136/6452 co-relation queries the response was YES. Maximal size of possible extension queue 1075. Compared 399920 event pairs, 966 based on Foata normal form. 97/24799 useless extension candidates. Maximal degree in co-relation 36223. Up to 1892 conditions per place. [2022-01-19 13:20:18,250 INFO L132 encePairwiseOnDemand]: 332/340 looper letters, 53 selfloop transitions, 12 changer transitions 0/381 dead transitions. [2022-01-19 13:20:18,250 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 381 transitions, 1207 flow [2022-01-19 13:20:18,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:20:18,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:20:18,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1569 transitions. [2022-01-19 13:20:18,252 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9229411764705883 [2022-01-19 13:20:18,252 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1569 transitions. [2022-01-19 13:20:18,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1569 transitions. [2022-01-19 13:20:18,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:18,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1569 transitions. [2022-01-19 13:20:18,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 313.8) internal successors, (1569), 5 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:18,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:18,256 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:18,256 INFO L186 Difference]: Start difference. First operand has 357 places, 341 transitions, 953 flow. Second operand 5 states and 1569 transitions. [2022-01-19 13:20:18,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 381 transitions, 1207 flow [2022-01-19 13:20:18,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 381 transitions, 1199 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 13:20:18,306 INFO L242 Difference]: Finished difference. Result has 363 places, 353 transitions, 1051 flow [2022-01-19 13:20:18,306 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=951, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=334, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1051, PETRI_PLACES=363, PETRI_TRANSITIONS=353} [2022-01-19 13:20:18,307 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 62 predicate places. [2022-01-19 13:20:18,307 INFO L470 AbstractCegarLoop]: Abstraction has has 363 places, 353 transitions, 1051 flow [2022-01-19 13:20:18,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:18,307 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:18,307 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:20:18,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-19 13:20:18,308 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 13:20:18,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:18,308 INFO L85 PathProgramCache]: Analyzing trace with hash 761523921, now seen corresponding path program 1 times [2022-01-19 13:20:18,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:18,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637768507] [2022-01-19 13:20:18,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:18,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:18,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:20:18,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:18,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637768507] [2022-01-19 13:20:18,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637768507] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:18,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:18,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 13:20:18,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123527776] [2022-01-19 13:20:18,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:18,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 13:20:18,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:18,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 13:20:18,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 13:20:18,508 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:20:18,508 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 353 transitions, 1051 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:18,508 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:18,508 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:20:18,508 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:22,338 INFO L129 PetriNetUnfolder]: 4020/34788 cut-off events. [2022-01-19 13:20:22,338 INFO L130 PetriNetUnfolder]: For 10891/11161 co-relation queries the response was YES. [2022-01-19 13:20:22,494 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48950 conditions, 34788 events. 4020/34788 cut-off events. For 10891/11161 co-relation queries the response was YES. Maximal size of possible extension queue 1067. Compared 539664 event pairs, 1748 based on Foata normal form. 58/32497 useless extension candidates. Maximal degree in co-relation 48914. Up to 4047 conditions per place. [2022-01-19 13:20:22,554 INFO L132 encePairwiseOnDemand]: 336/340 looper letters, 52 selfloop transitions, 7 changer transitions 0/375 dead transitions. [2022-01-19 13:20:22,555 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 375 transitions, 1264 flow [2022-01-19 13:20:22,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 13:20:22,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 13:20:22,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1248 transitions. [2022-01-19 13:20:22,556 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9176470588235294 [2022-01-19 13:20:22,556 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1248 transitions. [2022-01-19 13:20:22,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1248 transitions. [2022-01-19 13:20:22,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:22,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1248 transitions. [2022-01-19 13:20:22,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:22,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 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 13:20:22,559 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 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 13:20:22,559 INFO L186 Difference]: Start difference. First operand has 363 places, 353 transitions, 1051 flow. Second operand 4 states and 1248 transitions. [2022-01-19 13:20:22,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 375 transitions, 1264 flow [2022-01-19 13:20:22,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 375 transitions, 1256 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-01-19 13:20:22,649 INFO L242 Difference]: Finished difference. Result has 368 places, 357 transitions, 1108 flow [2022-01-19 13:20:22,649 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1043, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1108, PETRI_PLACES=368, PETRI_TRANSITIONS=357} [2022-01-19 13:20:22,650 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 67 predicate places. [2022-01-19 13:20:22,650 INFO L470 AbstractCegarLoop]: Abstraction has has 368 places, 357 transitions, 1108 flow [2022-01-19 13:20:22,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:22,650 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:22,650 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:20:22,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-19 13:20:22,650 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 13:20:22,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:22,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1326530775, now seen corresponding path program 1 times [2022-01-19 13:20:22,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:22,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103267543] [2022-01-19 13:20:22,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:22,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:22,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:22,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:20:22,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:22,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103267543] [2022-01-19 13:20:22,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103267543] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:22,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:22,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 13:20:22,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544625222] [2022-01-19 13:20:22,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:22,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 13:20:22,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:22,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 13:20:22,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 13:20:22,682 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:20:22,683 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 357 transitions, 1108 flow. Second operand has 4 states, 4 states have (on average 305.5) internal successors, (1222), 4 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:22,683 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:22,683 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:20:22,683 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:26,642 INFO L129 PetriNetUnfolder]: 3952/34138 cut-off events. [2022-01-19 13:20:26,642 INFO L130 PetriNetUnfolder]: For 13278/13524 co-relation queries the response was YES. [2022-01-19 13:20:26,779 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48748 conditions, 34138 events. 3952/34138 cut-off events. For 13278/13524 co-relation queries the response was YES. Maximal size of possible extension queue 1043. Compared 527107 event pairs, 1670 based on Foata normal form. 20/31911 useless extension candidates. Maximal degree in co-relation 48709. Up to 4183 conditions per place. [2022-01-19 13:20:26,837 INFO L132 encePairwiseOnDemand]: 335/340 looper letters, 53 selfloop transitions, 8 changer transitions 0/377 dead transitions. [2022-01-19 13:20:26,837 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 377 transitions, 1341 flow [2022-01-19 13:20:26,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 13:20:26,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 13:20:26,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1246 transitions. [2022-01-19 13:20:26,838 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9161764705882353 [2022-01-19 13:20:26,838 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1246 transitions. [2022-01-19 13:20:26,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1246 transitions. [2022-01-19 13:20:26,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:26,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1246 transitions. [2022-01-19 13:20:26,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 311.5) internal successors, (1246), 4 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:26,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 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 13:20:26,842 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 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 13:20:26,842 INFO L186 Difference]: Start difference. First operand has 368 places, 357 transitions, 1108 flow. Second operand 4 states and 1246 transitions. [2022-01-19 13:20:26,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 377 transitions, 1341 flow [2022-01-19 13:20:26,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 377 transitions, 1337 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 13:20:26,922 INFO L242 Difference]: Finished difference. Result has 372 places, 363 transitions, 1213 flow [2022-01-19 13:20:26,923 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1105, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=349, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1213, PETRI_PLACES=372, PETRI_TRANSITIONS=363} [2022-01-19 13:20:26,923 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 71 predicate places. [2022-01-19 13:20:26,923 INFO L470 AbstractCegarLoop]: Abstraction has has 372 places, 363 transitions, 1213 flow [2022-01-19 13:20:26,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.5) internal successors, (1222), 4 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:26,924 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:26,924 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:20:26,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-19 13:20:26,924 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 13:20:26,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:26,924 INFO L85 PathProgramCache]: Analyzing trace with hash -436319363, now seen corresponding path program 2 times [2022-01-19 13:20:26,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:26,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939004017] [2022-01-19 13:20:26,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:26,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:26,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:26,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:20:26,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:26,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939004017] [2022-01-19 13:20:26,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939004017] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:26,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:26,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 13:20:26,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243114914] [2022-01-19 13:20:26,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:26,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 13:20:26,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:26,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 13:20:26,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 13:20:26,955 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:20:26,955 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 363 transitions, 1213 flow. Second operand has 4 states, 4 states have (on average 305.5) internal successors, (1222), 4 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:26,955 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:26,955 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:20:26,955 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:30,663 INFO L129 PetriNetUnfolder]: 3861/33127 cut-off events. [2022-01-19 13:20:30,663 INFO L130 PetriNetUnfolder]: For 16691/16982 co-relation queries the response was YES. [2022-01-19 13:20:30,815 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48295 conditions, 33127 events. 3861/33127 cut-off events. For 16691/16982 co-relation queries the response was YES. Maximal size of possible extension queue 1016. Compared 508943 event pairs, 1196 based on Foata normal form. 103/30993 useless extension candidates. Maximal degree in co-relation 48254. Up to 2558 conditions per place. [2022-01-19 13:20:30,868 INFO L132 encePairwiseOnDemand]: 335/340 looper letters, 52 selfloop transitions, 18 changer transitions 0/386 dead transitions. [2022-01-19 13:20:30,869 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 386 transitions, 1457 flow [2022-01-19 13:20:30,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 13:20:30,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 13:20:30,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1248 transitions. [2022-01-19 13:20:30,870 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9176470588235294 [2022-01-19 13:20:30,870 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1248 transitions. [2022-01-19 13:20:30,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1248 transitions. [2022-01-19 13:20:30,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:30,871 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1248 transitions. [2022-01-19 13:20:30,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:30,873 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 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 13:20:30,873 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 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 13:20:30,873 INFO L186 Difference]: Start difference. First operand has 372 places, 363 transitions, 1213 flow. Second operand 4 states and 1248 transitions. [2022-01-19 13:20:30,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 386 transitions, 1457 flow [2022-01-19 13:20:30,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 386 transitions, 1455 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 13:20:30,967 INFO L242 Difference]: Finished difference. Result has 376 places, 366 transitions, 1303 flow [2022-01-19 13:20:30,967 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1211, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1303, PETRI_PLACES=376, PETRI_TRANSITIONS=366} [2022-01-19 13:20:30,968 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 75 predicate places. [2022-01-19 13:20:30,968 INFO L470 AbstractCegarLoop]: Abstraction has has 376 places, 366 transitions, 1303 flow [2022-01-19 13:20:30,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.5) internal successors, (1222), 4 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:30,968 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:30,968 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:20:30,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-19 13:20:30,968 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 13:20:30,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:30,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1008316741, now seen corresponding path program 1 times [2022-01-19 13:20:30,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:30,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048871588] [2022-01-19 13:20:30,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:30,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:31,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:20:31,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:31,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048871588] [2022-01-19 13:20:31,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048871588] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:31,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:31,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 13:20:31,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753219681] [2022-01-19 13:20:31,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:31,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 13:20:31,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:31,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 13:20:31,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 13:20:31,039 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 340 [2022-01-19 13:20:31,039 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 366 transitions, 1303 flow. Second operand has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:31,040 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:31,040 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 340 [2022-01-19 13:20:31,040 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:33,080 INFO L129 PetriNetUnfolder]: 886/15274 cut-off events. [2022-01-19 13:20:33,080 INFO L130 PetriNetUnfolder]: For 8814/10372 co-relation queries the response was YES. [2022-01-19 13:20:33,158 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24091 conditions, 15274 events. 886/15274 cut-off events. For 8814/10372 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 219244 event pairs, 132 based on Foata normal form. 274/14619 useless extension candidates. Maximal degree in co-relation 24048. Up to 3915 conditions per place. [2022-01-19 13:20:33,184 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 64 selfloop transitions, 3 changer transitions 6/380 dead transitions. [2022-01-19 13:20:33,184 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 380 transitions, 1482 flow [2022-01-19 13:20:33,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 13:20:33,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 13:20:33,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1964 transitions. [2022-01-19 13:20:33,186 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8252100840336134 [2022-01-19 13:20:33,186 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1964 transitions. [2022-01-19 13:20:33,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1964 transitions. [2022-01-19 13:20:33,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:33,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1964 transitions. [2022-01-19 13:20:33,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.57142857142856) internal successors, (1964), 7 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:33,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 340.0) internal successors, (2720), 8 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:33,191 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 340.0) internal successors, (2720), 8 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:33,191 INFO L186 Difference]: Start difference. First operand has 376 places, 366 transitions, 1303 flow. Second operand 7 states and 1964 transitions. [2022-01-19 13:20:33,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 380 transitions, 1482 flow [2022-01-19 13:20:33,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 380 transitions, 1467 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 13:20:33,218 INFO L242 Difference]: Finished difference. Result has 386 places, 366 transitions, 1283 flow [2022-01-19 13:20:33,218 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1283, PETRI_PLACES=386, PETRI_TRANSITIONS=366} [2022-01-19 13:20:33,219 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 85 predicate places. [2022-01-19 13:20:33,219 INFO L470 AbstractCegarLoop]: Abstraction has has 386 places, 366 transitions, 1283 flow [2022-01-19 13:20:33,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:33,219 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:33,219 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:20:33,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-19 13:20:33,219 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 13:20:33,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:33,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1945760589, now seen corresponding path program 1 times [2022-01-19 13:20:33,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:33,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419575668] [2022-01-19 13:20:33,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:33,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:33,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:20:33,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:33,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419575668] [2022-01-19 13:20:33,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419575668] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:33,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:33,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 13:20:33,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578408398] [2022-01-19 13:20:33,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:33,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 13:20:33,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:33,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 13:20:33,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-19 13:20:33,267 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 340 [2022-01-19 13:20:33,268 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 366 transitions, 1283 flow. Second operand has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:33,268 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:33,268 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 340 [2022-01-19 13:20:33,268 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:35,417 INFO L129 PetriNetUnfolder]: 1020/15697 cut-off events. [2022-01-19 13:20:35,418 INFO L130 PetriNetUnfolder]: For 9513/11068 co-relation queries the response was YES. [2022-01-19 13:20:35,510 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25419 conditions, 15697 events. 1020/15697 cut-off events. For 9513/11068 co-relation queries the response was YES. Maximal size of possible extension queue 515. Compared 225768 event pairs, 102 based on Foata normal form. 248/14877 useless extension candidates. Maximal degree in co-relation 25371. Up to 2837 conditions per place. [2022-01-19 13:20:35,532 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 61 selfloop transitions, 3 changer transitions 14/378 dead transitions. [2022-01-19 13:20:35,532 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 378 transitions, 1462 flow [2022-01-19 13:20:35,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 13:20:35,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 13:20:35,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1964 transitions. [2022-01-19 13:20:35,534 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8252100840336134 [2022-01-19 13:20:35,534 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1964 transitions. [2022-01-19 13:20:35,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1964 transitions. [2022-01-19 13:20:35,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:35,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1964 transitions. [2022-01-19 13:20:35,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 280.57142857142856) internal successors, (1964), 7 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:35,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 340.0) internal successors, (2720), 8 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:35,538 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 340.0) internal successors, (2720), 8 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:35,538 INFO L186 Difference]: Start difference. First operand has 386 places, 366 transitions, 1283 flow. Second operand 7 states and 1964 transitions. [2022-01-19 13:20:35,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 378 transitions, 1462 flow [2022-01-19 13:20:35,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 378 transitions, 1445 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-01-19 13:20:35,587 INFO L242 Difference]: Finished difference. Result has 389 places, 359 transitions, 1178 flow [2022-01-19 13:20:35,587 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1268, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1178, PETRI_PLACES=389, PETRI_TRANSITIONS=359} [2022-01-19 13:20:35,588 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 88 predicate places. [2022-01-19 13:20:35,588 INFO L470 AbstractCegarLoop]: Abstraction has has 389 places, 359 transitions, 1178 flow [2022-01-19 13:20:35,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:35,588 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:35,588 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:20:35,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-19 13:20:35,588 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 13:20:35,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:35,589 INFO L85 PathProgramCache]: Analyzing trace with hash 728092825, now seen corresponding path program 1 times [2022-01-19 13:20:35,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:35,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196678109] [2022-01-19 13:20:35,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:35,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:35,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:20:35,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:35,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196678109] [2022-01-19 13:20:35,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196678109] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:35,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:35,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:20:35,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583605789] [2022-01-19 13:20:35,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:35,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:20:35,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:35,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:20:35,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:20:35,658 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:20:35,658 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 359 transitions, 1178 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:35,658 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:35,658 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:20:35,658 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:39,636 INFO L129 PetriNetUnfolder]: 3557/30703 cut-off events. [2022-01-19 13:20:39,636 INFO L130 PetriNetUnfolder]: For 17651/18284 co-relation queries the response was YES. [2022-01-19 13:20:39,769 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47685 conditions, 30703 events. 3557/30703 cut-off events. For 17651/18284 co-relation queries the response was YES. Maximal size of possible extension queue 1006. Compared 474974 event pairs, 656 based on Foata normal form. 130/28895 useless extension candidates. Maximal degree in co-relation 47637. Up to 1895 conditions per place. [2022-01-19 13:20:39,801 INFO L132 encePairwiseOnDemand]: 332/340 looper letters, 56 selfloop transitions, 21 changer transitions 25/414 dead transitions. [2022-01-19 13:20:39,801 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 414 transitions, 1690 flow [2022-01-19 13:20:39,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:20:39,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:20:39,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1569 transitions. [2022-01-19 13:20:39,803 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9229411764705883 [2022-01-19 13:20:39,803 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1569 transitions. [2022-01-19 13:20:39,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1569 transitions. [2022-01-19 13:20:39,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:39,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1569 transitions. [2022-01-19 13:20:39,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 313.8) internal successors, (1569), 5 states have internal predecessors, (1569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:39,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:39,806 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:39,806 INFO L186 Difference]: Start difference. First operand has 389 places, 359 transitions, 1178 flow. Second operand 5 states and 1569 transitions. [2022-01-19 13:20:39,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 414 transitions, 1690 flow [2022-01-19 13:20:39,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 382 places, 414 transitions, 1661 flow, removed 8 selfloop flow, removed 8 redundant places. [2022-01-19 13:20:39,937 INFO L242 Difference]: Finished difference. Result has 386 places, 365 transitions, 1322 flow [2022-01-19 13:20:39,938 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=359, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1322, PETRI_PLACES=386, PETRI_TRANSITIONS=365} [2022-01-19 13:20:39,938 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 85 predicate places. [2022-01-19 13:20:39,938 INFO L470 AbstractCegarLoop]: Abstraction has has 386 places, 365 transitions, 1322 flow [2022-01-19 13:20:39,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:39,938 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:39,938 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:20:39,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-19 13:20:39,938 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 13:20:39,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:39,939 INFO L85 PathProgramCache]: Analyzing trace with hash -2052109271, now seen corresponding path program 2 times [2022-01-19 13:20:39,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:39,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338086404] [2022-01-19 13:20:39,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:39,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:39,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:39,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:20:39,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:39,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338086404] [2022-01-19 13:20:39,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338086404] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:39,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:39,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:20:39,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692009294] [2022-01-19 13:20:39,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:39,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:20:39,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:39,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:20:39,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:20:39,990 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:20:39,990 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 365 transitions, 1322 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:39,991 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:39,991 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:20:39,991 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:43,385 INFO L129 PetriNetUnfolder]: 2763/26734 cut-off events. [2022-01-19 13:20:43,386 INFO L130 PetriNetUnfolder]: For 23794/24463 co-relation queries the response was YES. [2022-01-19 13:20:43,516 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42697 conditions, 26734 events. 2763/26734 cut-off events. For 23794/24463 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 399264 event pairs, 565 based on Foata normal form. 36/25186 useless extension candidates. Maximal degree in co-relation 42651. Up to 1392 conditions per place. [2022-01-19 13:20:43,561 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 73 selfloop transitions, 15 changer transitions 0/400 dead transitions. [2022-01-19 13:20:43,561 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 400 transitions, 1778 flow [2022-01-19 13:20:43,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:20:43,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:20:43,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1554 transitions. [2022-01-19 13:20:43,563 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9141176470588235 [2022-01-19 13:20:43,563 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1554 transitions. [2022-01-19 13:20:43,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1554 transitions. [2022-01-19 13:20:43,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:43,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1554 transitions. [2022-01-19 13:20:43,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 310.8) internal successors, (1554), 5 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:43,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:43,567 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:43,568 INFO L186 Difference]: Start difference. First operand has 386 places, 365 transitions, 1322 flow. Second operand 5 states and 1554 transitions. [2022-01-19 13:20:43,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 400 transitions, 1778 flow [2022-01-19 13:20:43,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 400 transitions, 1708 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-01-19 13:20:43,666 INFO L242 Difference]: Finished difference. Result has 378 places, 373 transitions, 1433 flow [2022-01-19 13:20:43,666 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1283, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1433, PETRI_PLACES=378, PETRI_TRANSITIONS=373} [2022-01-19 13:20:43,667 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 77 predicate places. [2022-01-19 13:20:43,667 INFO L470 AbstractCegarLoop]: Abstraction has has 378 places, 373 transitions, 1433 flow [2022-01-19 13:20:43,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:43,667 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:43,667 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:20:43,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-19 13:20:43,667 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 13:20:43,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:43,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1572503803, now seen corresponding path program 1 times [2022-01-19 13:20:43,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:43,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975794826] [2022-01-19 13:20:43,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:43,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:43,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:20:43,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:43,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975794826] [2022-01-19 13:20:43,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975794826] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:43,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:43,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 13:20:43,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137045555] [2022-01-19 13:20:43,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:43,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 13:20:43,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:43,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 13:20:43,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 13:20:43,734 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 13:20:43,735 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 373 transitions, 1433 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:43,735 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:43,735 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 13:20:43,735 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:49,149 INFO L129 PetriNetUnfolder]: 9043/38001 cut-off events. [2022-01-19 13:20:49,149 INFO L130 PetriNetUnfolder]: For 22109/23019 co-relation queries the response was YES. [2022-01-19 13:20:49,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67137 conditions, 38001 events. 9043/38001 cut-off events. For 22109/23019 co-relation queries the response was YES. Maximal size of possible extension queue 2516. Compared 570437 event pairs, 5813 based on Foata normal form. 69/34460 useless extension candidates. Maximal degree in co-relation 67092. Up to 14979 conditions per place. [2022-01-19 13:20:49,503 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 102 selfloop transitions, 12 changer transitions 17/439 dead transitions. [2022-01-19 13:20:49,503 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 439 transitions, 1909 flow [2022-01-19 13:20:49,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 13:20:49,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 13:20:49,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3558 transitions. [2022-01-19 13:20:49,505 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8049773755656109 [2022-01-19 13:20:49,506 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3558 transitions. [2022-01-19 13:20:49,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3558 transitions. [2022-01-19 13:20:49,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:49,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3558 transitions. [2022-01-19 13:20:49,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 273.6923076923077) internal successors, (3558), 13 states have internal predecessors, (3558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:49,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 340.0) internal successors, (4760), 14 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:49,512 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 340.0) internal successors, (4760), 14 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:49,512 INFO L186 Difference]: Start difference. First operand has 378 places, 373 transitions, 1433 flow. Second operand 13 states and 3558 transitions. [2022-01-19 13:20:49,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 439 transitions, 1909 flow [2022-01-19 13:20:49,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 439 transitions, 1905 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-01-19 13:20:49,559 INFO L242 Difference]: Finished difference. Result has 399 places, 384 transitions, 1518 flow [2022-01-19 13:20:49,559 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1429, PETRI_DIFFERENCE_MINUEND_PLACES=377, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1518, PETRI_PLACES=399, PETRI_TRANSITIONS=384} [2022-01-19 13:20:49,560 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 98 predicate places. [2022-01-19 13:20:49,560 INFO L470 AbstractCegarLoop]: Abstraction has has 399 places, 384 transitions, 1518 flow [2022-01-19 13:20:49,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:49,560 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:49,560 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:20:49,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-19 13:20:49,561 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 13:20:49,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:49,561 INFO L85 PathProgramCache]: Analyzing trace with hash 113123015, now seen corresponding path program 3 times [2022-01-19 13:20:49,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:49,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168917353] [2022-01-19 13:20:49,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:49,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:49,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:20:49,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:49,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168917353] [2022-01-19 13:20:49,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168917353] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:49,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:49,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:20:49,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537443456] [2022-01-19 13:20:49,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:49,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:20:49,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:49,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:20:49,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:20:49,602 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:20:49,603 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 384 transitions, 1518 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:49,603 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:49,603 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:20:49,603 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:53,234 INFO L129 PetriNetUnfolder]: 2786/27583 cut-off events. [2022-01-19 13:20:53,234 INFO L130 PetriNetUnfolder]: For 25452/25788 co-relation queries the response was YES. [2022-01-19 13:20:53,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49420 conditions, 27583 events. 2786/27583 cut-off events. For 25452/25788 co-relation queries the response was YES. Maximal size of possible extension queue 956. Compared 424393 event pairs, 723 based on Foata normal form. 82/26028 useless extension candidates. Maximal degree in co-relation 49365. Up to 1617 conditions per place. [2022-01-19 13:20:53,442 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 61 selfloop transitions, 29 changer transitions 1/414 dead transitions. [2022-01-19 13:20:53,442 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 414 transitions, 1907 flow [2022-01-19 13:20:53,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:20:53,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:20:53,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1562 transitions. [2022-01-19 13:20:53,444 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9188235294117647 [2022-01-19 13:20:53,444 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1562 transitions. [2022-01-19 13:20:53,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1562 transitions. [2022-01-19 13:20:53,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:53,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1562 transitions. [2022-01-19 13:20:53,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 312.4) internal successors, (1562), 5 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:53,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:53,447 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:53,447 INFO L186 Difference]: Start difference. First operand has 399 places, 384 transitions, 1518 flow. Second operand 5 states and 1562 transitions. [2022-01-19 13:20:53,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 414 transitions, 1907 flow [2022-01-19 13:20:53,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 414 transitions, 1903 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-01-19 13:20:53,702 INFO L242 Difference]: Finished difference. Result has 403 places, 391 transitions, 1730 flow [2022-01-19 13:20:53,702 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1514, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1730, PETRI_PLACES=403, PETRI_TRANSITIONS=391} [2022-01-19 13:20:53,702 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 102 predicate places. [2022-01-19 13:20:53,702 INFO L470 AbstractCegarLoop]: Abstraction has has 403 places, 391 transitions, 1730 flow [2022-01-19 13:20:53,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:53,703 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:53,703 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:20:53,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-19 13:20:53,703 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 13:20:53,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:53,703 INFO L85 PathProgramCache]: Analyzing trace with hash 94491573, now seen corresponding path program 4 times [2022-01-19 13:20:53,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:53,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528818993] [2022-01-19 13:20:53,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:53,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:53,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:53,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:20:53,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:53,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528818993] [2022-01-19 13:20:53,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528818993] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:53,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:53,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:20:53,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704725386] [2022-01-19 13:20:53,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:53,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:20:53,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:53,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:20:53,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:20:53,889 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:20:53,890 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 391 transitions, 1730 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:53,890 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:53,890 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:20:53,890 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:20:57,877 INFO L129 PetriNetUnfolder]: 3027/30964 cut-off events. [2022-01-19 13:20:57,877 INFO L130 PetriNetUnfolder]: For 35000/35336 co-relation queries the response was YES. [2022-01-19 13:20:58,068 INFO L84 FinitePrefix]: Finished finitePrefix Result has 54041 conditions, 30964 events. 3027/30964 cut-off events. For 35000/35336 co-relation queries the response was YES. Maximal size of possible extension queue 829. Compared 478622 event pairs, 582 based on Foata normal form. 88/29115 useless extension candidates. Maximal degree in co-relation 53984. Up to 2365 conditions per place. [2022-01-19 13:20:58,116 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 61 selfloop transitions, 28 changer transitions 0/412 dead transitions. [2022-01-19 13:20:58,117 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 412 transitions, 2039 flow [2022-01-19 13:20:58,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:20:58,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:20:58,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1559 transitions. [2022-01-19 13:20:58,118 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9170588235294118 [2022-01-19 13:20:58,118 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1559 transitions. [2022-01-19 13:20:58,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1559 transitions. [2022-01-19 13:20:58,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:20:58,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1559 transitions. [2022-01-19 13:20:58,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.8) internal successors, (1559), 5 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:58,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:58,122 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:58,122 INFO L186 Difference]: Start difference. First operand has 403 places, 391 transitions, 1730 flow. Second operand 5 states and 1559 transitions. [2022-01-19 13:20:58,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 412 transitions, 2039 flow [2022-01-19 13:20:58,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 412 transitions, 2029 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-01-19 13:20:58,337 INFO L242 Difference]: Finished difference. Result has 410 places, 395 transitions, 1894 flow [2022-01-19 13:20:58,337 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1724, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=391, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1894, PETRI_PLACES=410, PETRI_TRANSITIONS=395} [2022-01-19 13:20:58,338 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 109 predicate places. [2022-01-19 13:20:58,338 INFO L470 AbstractCegarLoop]: Abstraction has has 410 places, 395 transitions, 1894 flow [2022-01-19 13:20:58,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:58,338 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:20:58,338 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:20:58,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-19 13:20:58,338 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 13:20:58,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:20:58,338 INFO L85 PathProgramCache]: Analyzing trace with hash 798531221, now seen corresponding path program 1 times [2022-01-19 13:20:58,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:20:58,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219193668] [2022-01-19 13:20:58,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:20:58,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:20:58,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:20:58,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:20:58,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:20:58,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219193668] [2022-01-19 13:20:58,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219193668] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:20:58,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:20:58,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:20:58,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498840766] [2022-01-19 13:20:58,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:20:58,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:20:58,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:20:58,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:20:58,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:20:58,381 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:20:58,382 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 395 transitions, 1894 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:20:58,382 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:20:58,382 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:20:58,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:21:02,928 INFO L129 PetriNetUnfolder]: 3013/33069 cut-off events. [2022-01-19 13:21:02,928 INFO L130 PetriNetUnfolder]: For 44463/44958 co-relation queries the response was YES. [2022-01-19 13:21:03,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58760 conditions, 33069 events. 3013/33069 cut-off events. For 44463/44958 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 522784 event pairs, 785 based on Foata normal form. 143/31160 useless extension candidates. Maximal degree in co-relation 58699. Up to 1844 conditions per place. [2022-01-19 13:21:03,488 INFO L132 encePairwiseOnDemand]: 335/340 looper letters, 112 selfloop transitions, 8 changer transitions 0/443 dead transitions. [2022-01-19 13:21:03,489 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 443 transitions, 2640 flow [2022-01-19 13:21:03,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:21:03,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:21:03,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1554 transitions. [2022-01-19 13:21:03,490 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9141176470588235 [2022-01-19 13:21:03,490 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1554 transitions. [2022-01-19 13:21:03,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1554 transitions. [2022-01-19 13:21:03,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:21:03,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1554 transitions. [2022-01-19 13:21:03,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 310.8) internal successors, (1554), 5 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:03,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:03,493 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:03,493 INFO L186 Difference]: Start difference. First operand has 410 places, 395 transitions, 1894 flow. Second operand 5 states and 1554 transitions. [2022-01-19 13:21:03,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 443 transitions, 2640 flow [2022-01-19 13:21:03,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 443 transitions, 2630 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-01-19 13:21:03,832 INFO L242 Difference]: Finished difference. Result has 416 places, 397 transitions, 1938 flow [2022-01-19 13:21:03,832 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1838, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1938, PETRI_PLACES=416, PETRI_TRANSITIONS=397} [2022-01-19 13:21:03,832 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 115 predicate places. [2022-01-19 13:21:03,832 INFO L470 AbstractCegarLoop]: Abstraction has has 416 places, 397 transitions, 1938 flow [2022-01-19 13:21:03,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:03,833 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:21:03,833 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:21:03,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-19 13:21:03,833 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 13:21:03,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:21:03,833 INFO L85 PathProgramCache]: Analyzing trace with hash 581407537, now seen corresponding path program 2 times [2022-01-19 13:21:03,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:21:03,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837290502] [2022-01-19 13:21:03,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:21:03,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:21:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:21:03,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:21:03,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:21:03,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837290502] [2022-01-19 13:21:03,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837290502] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:21:03,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:21:03,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:21:03,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180971029] [2022-01-19 13:21:03,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:21:03,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:21:03,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:21:03,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:21:03,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:21:03,881 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:21:03,882 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 397 transitions, 1938 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:03,882 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:21:03,882 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:21:03,882 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:21:09,419 INFO L129 PetriNetUnfolder]: 3627/38791 cut-off events. [2022-01-19 13:21:09,420 INFO L130 PetriNetUnfolder]: For 52350/52893 co-relation queries the response was YES. [2022-01-19 13:21:09,931 INFO L84 FinitePrefix]: Finished finitePrefix Result has 71025 conditions, 38791 events. 3627/38791 cut-off events. For 52350/52893 co-relation queries the response was YES. Maximal size of possible extension queue 1168. Compared 634805 event pairs, 944 based on Foata normal form. 56/36573 useless extension candidates. Maximal degree in co-relation 70961. Up to 2970 conditions per place. [2022-01-19 13:21:09,990 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 95 selfloop transitions, 27 changer transitions 0/445 dead transitions. [2022-01-19 13:21:09,990 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 445 transitions, 2662 flow [2022-01-19 13:21:09,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:21:09,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:21:09,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1561 transitions. [2022-01-19 13:21:09,992 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.918235294117647 [2022-01-19 13:21:09,992 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1561 transitions. [2022-01-19 13:21:09,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1561 transitions. [2022-01-19 13:21:09,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:21:09,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1561 transitions. [2022-01-19 13:21:09,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 312.2) internal successors, (1561), 5 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:09,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:09,995 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:09,995 INFO L186 Difference]: Start difference. First operand has 416 places, 397 transitions, 1938 flow. Second operand 5 states and 1561 transitions. [2022-01-19 13:21:09,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 445 transitions, 2662 flow [2022-01-19 13:21:10,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 445 transitions, 2643 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-01-19 13:21:10,523 INFO L242 Difference]: Finished difference. Result has 422 places, 409 transitions, 2196 flow [2022-01-19 13:21:10,523 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=1925, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2196, PETRI_PLACES=422, PETRI_TRANSITIONS=409} [2022-01-19 13:21:10,524 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 121 predicate places. [2022-01-19 13:21:10,524 INFO L470 AbstractCegarLoop]: Abstraction has has 422 places, 409 transitions, 2196 flow [2022-01-19 13:21:10,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:10,524 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:21:10,524 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:21:10,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-19 13:21:10,524 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 13:21:10,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:21:10,525 INFO L85 PathProgramCache]: Analyzing trace with hash 121606111, now seen corresponding path program 5 times [2022-01-19 13:21:10,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:21:10,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862993935] [2022-01-19 13:21:10,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:21:10,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:21:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:21:10,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:21:10,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:21:10,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862993935] [2022-01-19 13:21:10,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862993935] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:21:10,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:21:10,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:21:10,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870886445] [2022-01-19 13:21:10,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:21:10,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:21:10,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:21:10,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:21:10,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:21:10,585 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:21:10,586 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 409 transitions, 2196 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:10,586 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:21:10,586 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:21:10,586 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:21:16,257 INFO L129 PetriNetUnfolder]: 3736/40258 cut-off events. [2022-01-19 13:21:16,257 INFO L130 PetriNetUnfolder]: For 61556/62051 co-relation queries the response was YES. [2022-01-19 13:21:16,603 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73868 conditions, 40258 events. 3736/40258 cut-off events. For 61556/62051 co-relation queries the response was YES. Maximal size of possible extension queue 1102. Compared 655201 event pairs, 936 based on Foata normal form. 70/37872 useless extension candidates. Maximal degree in co-relation 73801. Up to 3193 conditions per place. [2022-01-19 13:21:16,688 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 80 selfloop transitions, 25 changer transitions 0/428 dead transitions. [2022-01-19 13:21:16,688 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 428 transitions, 2500 flow [2022-01-19 13:21:16,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:21:16,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:21:16,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1557 transitions. [2022-01-19 13:21:16,690 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9158823529411765 [2022-01-19 13:21:16,690 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1557 transitions. [2022-01-19 13:21:16,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1557 transitions. [2022-01-19 13:21:16,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:21:16,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1557 transitions. [2022-01-19 13:21:16,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.4) internal successors, (1557), 5 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:16,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:16,692 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:16,693 INFO L186 Difference]: Start difference. First operand has 422 places, 409 transitions, 2196 flow. Second operand 5 states and 1557 transitions. [2022-01-19 13:21:16,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 428 transitions, 2500 flow [2022-01-19 13:21:17,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 425 places, 428 transitions, 2440 flow, removed 15 selfloop flow, removed 1 redundant places. [2022-01-19 13:21:17,279 INFO L242 Difference]: Finished difference. Result has 426 places, 408 transitions, 2175 flow [2022-01-19 13:21:17,280 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2119, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2175, PETRI_PLACES=426, PETRI_TRANSITIONS=408} [2022-01-19 13:21:17,280 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 125 predicate places. [2022-01-19 13:21:17,280 INFO L470 AbstractCegarLoop]: Abstraction has has 426 places, 408 transitions, 2175 flow [2022-01-19 13:21:17,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:17,280 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:21:17,280 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:21:17,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-19 13:21:17,281 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 13:21:17,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:21:17,281 INFO L85 PathProgramCache]: Analyzing trace with hash 32140543, now seen corresponding path program 2 times [2022-01-19 13:21:17,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:21:17,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431747951] [2022-01-19 13:21:17,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:21:17,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:21:17,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:21:17,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:21:17,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:21:17,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431747951] [2022-01-19 13:21:17,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431747951] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:21:17,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:21:17,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 13:21:17,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445010636] [2022-01-19 13:21:17,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:21:17,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 13:21:17,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:21:17,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 13:21:17,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 13:21:17,344 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 13:21:17,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 408 transitions, 2175 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:17,345 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:21:17,345 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 13:21:17,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:21:26,452 INFO L129 PetriNetUnfolder]: 13285/55387 cut-off events. [2022-01-19 13:21:26,453 INFO L130 PetriNetUnfolder]: For 59657/61991 co-relation queries the response was YES. [2022-01-19 13:21:27,198 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120382 conditions, 55387 events. 13285/55387 cut-off events. For 59657/61991 co-relation queries the response was YES. Maximal size of possible extension queue 4095. Compared 885253 event pairs, 5024 based on Foata normal form. 136/50652 useless extension candidates. Maximal degree in co-relation 120314. Up to 14044 conditions per place. [2022-01-19 13:21:27,321 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 109 selfloop transitions, 18 changer transitions 16/475 dead transitions. [2022-01-19 13:21:27,321 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 475 transitions, 2736 flow [2022-01-19 13:21:27,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 13:21:27,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 13:21:27,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3556 transitions. [2022-01-19 13:21:27,323 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8045248868778281 [2022-01-19 13:21:27,323 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3556 transitions. [2022-01-19 13:21:27,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3556 transitions. [2022-01-19 13:21:27,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:21:27,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3556 transitions. [2022-01-19 13:21:27,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 273.53846153846155) internal successors, (3556), 13 states have internal predecessors, (3556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:27,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 340.0) internal successors, (4760), 14 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:27,329 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 340.0) internal successors, (4760), 14 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:27,329 INFO L186 Difference]: Start difference. First operand has 426 places, 408 transitions, 2175 flow. Second operand 13 states and 3556 transitions. [2022-01-19 13:21:27,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 475 transitions, 2736 flow [2022-01-19 13:21:28,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 475 transitions, 2701 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 13:21:28,676 INFO L242 Difference]: Finished difference. Result has 446 places, 419 transitions, 2293 flow [2022-01-19 13:21:28,676 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2140, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=396, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2293, PETRI_PLACES=446, PETRI_TRANSITIONS=419} [2022-01-19 13:21:28,676 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 145 predicate places. [2022-01-19 13:21:28,676 INFO L470 AbstractCegarLoop]: Abstraction has has 446 places, 419 transitions, 2293 flow [2022-01-19 13:21:28,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:28,677 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:21:28,677 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:21:28,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-19 13:21:28,677 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 13:21:28,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:21:28,677 INFO L85 PathProgramCache]: Analyzing trace with hash 850323031, now seen corresponding path program 3 times [2022-01-19 13:21:28,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:21:28,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955834765] [2022-01-19 13:21:28,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:21:28,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:21:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:21:28,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:21:28,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:21:28,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955834765] [2022-01-19 13:21:28,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955834765] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:21:28,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:21:28,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:21:28,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39745408] [2022-01-19 13:21:28,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:21:28,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:21:28,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:21:28,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:21:28,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:21:28,718 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:21:28,719 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 419 transitions, 2293 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:28,719 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:21:28,719 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:21:28,719 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:21:35,607 INFO L129 PetriNetUnfolder]: 4203/43947 cut-off events. [2022-01-19 13:21:35,607 INFO L130 PetriNetUnfolder]: For 74629/75138 co-relation queries the response was YES. [2022-01-19 13:21:36,257 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92564 conditions, 43947 events. 4203/43947 cut-off events. For 74629/75138 co-relation queries the response was YES. Maximal size of possible extension queue 1331. Compared 733114 event pairs, 1027 based on Foata normal form. 40/41474 useless extension candidates. Maximal degree in co-relation 92486. Up to 2498 conditions per place. [2022-01-19 13:21:36,333 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 84 selfloop transitions, 38 changer transitions 0/456 dead transitions. [2022-01-19 13:21:36,333 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 456 transitions, 2873 flow [2022-01-19 13:21:36,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:21:36,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:21:36,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1563 transitions. [2022-01-19 13:21:36,335 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9194117647058824 [2022-01-19 13:21:36,335 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1563 transitions. [2022-01-19 13:21:36,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1563 transitions. [2022-01-19 13:21:36,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:21:36,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1563 transitions. [2022-01-19 13:21:36,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 312.6) internal successors, (1563), 5 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:36,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:36,338 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:36,338 INFO L186 Difference]: Start difference. First operand has 446 places, 419 transitions, 2293 flow. Second operand 5 states and 1563 transitions. [2022-01-19 13:21:36,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 456 transitions, 2873 flow [2022-01-19 13:21:37,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 456 transitions, 2849 flow, removed 12 selfloop flow, removed 2 redundant places. [2022-01-19 13:21:37,988 INFO L242 Difference]: Finished difference. Result has 449 places, 424 transitions, 2466 flow [2022-01-19 13:21:37,988 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2269, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2466, PETRI_PLACES=449, PETRI_TRANSITIONS=424} [2022-01-19 13:21:37,989 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 148 predicate places. [2022-01-19 13:21:37,989 INFO L470 AbstractCegarLoop]: Abstraction has has 449 places, 424 transitions, 2466 flow [2022-01-19 13:21:37,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:37,989 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:21:37,989 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:21:37,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-19 13:21:37,989 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 13:21:37,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:21:37,989 INFO L85 PathProgramCache]: Analyzing trace with hash -980895135, now seen corresponding path program 3 times [2022-01-19 13:21:37,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:21:37,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605032396] [2022-01-19 13:21:37,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:21:37,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:21:38,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:21:38,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:21:38,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:21:38,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605032396] [2022-01-19 13:21:38,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605032396] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:21:38,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:21:38,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 13:21:38,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986035591] [2022-01-19 13:21:38,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:21:38,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 13:21:38,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:21:38,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 13:21:38,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 13:21:38,019 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:21:38,020 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 424 transitions, 2466 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:38,020 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:21:38,020 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:21:38,020 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:21:44,458 INFO L129 PetriNetUnfolder]: 4204/43912 cut-off events. [2022-01-19 13:21:44,459 INFO L130 PetriNetUnfolder]: For 84579/85223 co-relation queries the response was YES. [2022-01-19 13:21:45,021 INFO L84 FinitePrefix]: Finished finitePrefix Result has 91300 conditions, 43912 events. 4204/43912 cut-off events. For 84579/85223 co-relation queries the response was YES. Maximal size of possible extension queue 1325. Compared 732708 event pairs, 1273 based on Foata normal form. 40/41338 useless extension candidates. Maximal degree in co-relation 91220. Up to 4034 conditions per place. [2022-01-19 13:21:45,089 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 75 selfloop transitions, 41 changer transitions 0/450 dead transitions. [2022-01-19 13:21:45,089 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 450 transitions, 2944 flow [2022-01-19 13:21:45,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:21:45,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:21:45,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1558 transitions. [2022-01-19 13:21:45,091 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9164705882352941 [2022-01-19 13:21:45,091 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1558 transitions. [2022-01-19 13:21:45,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1558 transitions. [2022-01-19 13:21:45,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:21:45,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1558 transitions. [2022-01-19 13:21:45,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.6) internal successors, (1558), 5 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:45,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:45,093 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:45,093 INFO L186 Difference]: Start difference. First operand has 449 places, 424 transitions, 2466 flow. Second operand 5 states and 1558 transitions. [2022-01-19 13:21:45,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 450 transitions, 2944 flow [2022-01-19 13:21:46,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 450 transitions, 2924 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-01-19 13:21:46,138 INFO L242 Difference]: Finished difference. Result has 456 places, 434 transitions, 2763 flow [2022-01-19 13:21:46,138 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2432, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2763, PETRI_PLACES=456, PETRI_TRANSITIONS=434} [2022-01-19 13:21:46,139 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 155 predicate places. [2022-01-19 13:21:46,139 INFO L470 AbstractCegarLoop]: Abstraction has has 456 places, 434 transitions, 2763 flow [2022-01-19 13:21:46,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:46,139 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:21:46,139 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:21:46,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-19 13:21:46,139 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 13:21:46,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:21:46,139 INFO L85 PathProgramCache]: Analyzing trace with hash 493838365, now seen corresponding path program 1 times [2022-01-19 13:21:46,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:21:46,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415395352] [2022-01-19 13:21:46,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:21:46,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:21:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:21:46,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:21:46,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:21:46,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415395352] [2022-01-19 13:21:46,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415395352] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:21:46,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:21:46,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 13:21:46,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963404986] [2022-01-19 13:21:46,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:21:46,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 13:21:46,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:21:46,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 13:21:46,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 13:21:46,170 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:21:46,170 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 434 transitions, 2763 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:46,170 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:21:46,170 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:21:46,170 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:21:53,002 INFO L129 PetriNetUnfolder]: 4220/44659 cut-off events. [2022-01-19 13:21:53,002 INFO L130 PetriNetUnfolder]: For 93155/93678 co-relation queries the response was YES. [2022-01-19 13:21:53,490 INFO L84 FinitePrefix]: Finished finitePrefix Result has 92956 conditions, 44659 events. 4220/44659 cut-off events. For 93155/93678 co-relation queries the response was YES. Maximal size of possible extension queue 1241. Compared 741503 event pairs, 1283 based on Foata normal form. 75/41959 useless extension candidates. Maximal degree in co-relation 92873. Up to 4126 conditions per place. [2022-01-19 13:21:53,563 INFO L132 encePairwiseOnDemand]: 335/340 looper letters, 71 selfloop transitions, 42 changer transitions 0/447 dead transitions. [2022-01-19 13:21:53,563 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 447 transitions, 3083 flow [2022-01-19 13:21:53,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:21:53,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:21:53,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1553 transitions. [2022-01-19 13:21:53,568 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9135294117647059 [2022-01-19 13:21:53,568 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1553 transitions. [2022-01-19 13:21:53,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1553 transitions. [2022-01-19 13:21:53,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:21:53,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1553 transitions. [2022-01-19 13:21:53,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 310.6) internal successors, (1553), 5 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:53,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:53,570 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:53,570 INFO L186 Difference]: Start difference. First operand has 456 places, 434 transitions, 2763 flow. Second operand 5 states and 1553 transitions. [2022-01-19 13:21:53,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 447 transitions, 3083 flow [2022-01-19 13:21:54,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 447 transitions, 3074 flow, removed 3 selfloop flow, removed 1 redundant places. [2022-01-19 13:21:54,677 INFO L242 Difference]: Finished difference. Result has 461 places, 435 transitions, 2922 flow [2022-01-19 13:21:54,678 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2744, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2922, PETRI_PLACES=461, PETRI_TRANSITIONS=435} [2022-01-19 13:21:54,678 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 160 predicate places. [2022-01-19 13:21:54,678 INFO L470 AbstractCegarLoop]: Abstraction has has 461 places, 435 transitions, 2922 flow [2022-01-19 13:21:54,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:54,678 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:21:54,679 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:21:54,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-19 13:21:54,679 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 13:21:54,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:21:54,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1946973185, now seen corresponding path program 1 times [2022-01-19 13:21:54,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:21:54,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682966906] [2022-01-19 13:21:54,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:21:54,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:21:54,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:21:54,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:21:54,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:21:54,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682966906] [2022-01-19 13:21:54,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682966906] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:21:54,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:21:54,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 13:21:54,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015457901] [2022-01-19 13:21:54,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:21:54,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 13:21:54,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:21:54,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 13:21:54,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 13:21:54,732 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 13:21:54,733 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 435 transitions, 2922 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:21:54,733 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:21:54,733 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 13:21:54,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:22:06,091 INFO L129 PetriNetUnfolder]: 13992/62094 cut-off events. [2022-01-19 13:22:06,091 INFO L130 PetriNetUnfolder]: For 116145/118738 co-relation queries the response was YES. [2022-01-19 13:22:07,046 INFO L84 FinitePrefix]: Finished finitePrefix Result has 147614 conditions, 62094 events. 13992/62094 cut-off events. For 116145/118738 co-relation queries the response was YES. Maximal size of possible extension queue 4333. Compared 1019886 event pairs, 9560 based on Foata normal form. 58/55992 useless extension candidates. Maximal degree in co-relation 147529. Up to 27114 conditions per place. [2022-01-19 13:22:07,187 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 128 selfloop transitions, 12 changer transitions 17/505 dead transitions. [2022-01-19 13:22:07,187 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 505 transitions, 3561 flow [2022-01-19 13:22:07,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 13:22:07,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 13:22:07,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3558 transitions. [2022-01-19 13:22:07,190 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8049773755656109 [2022-01-19 13:22:07,190 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3558 transitions. [2022-01-19 13:22:07,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3558 transitions. [2022-01-19 13:22:07,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:22:07,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3558 transitions. [2022-01-19 13:22:07,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 273.6923076923077) internal successors, (3558), 13 states have internal predecessors, (3558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:07,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 340.0) internal successors, (4760), 14 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:07,195 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 340.0) internal successors, (4760), 14 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:07,195 INFO L186 Difference]: Start difference. First operand has 461 places, 435 transitions, 2922 flow. Second operand 13 states and 3558 transitions. [2022-01-19 13:22:07,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 505 transitions, 3561 flow [2022-01-19 13:22:09,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 505 transitions, 3529 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-01-19 13:22:09,229 INFO L242 Difference]: Finished difference. Result has 481 places, 444 transitions, 2983 flow [2022-01-19 13:22:09,230 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2890, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2983, PETRI_PLACES=481, PETRI_TRANSITIONS=444} [2022-01-19 13:22:09,231 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 180 predicate places. [2022-01-19 13:22:09,231 INFO L470 AbstractCegarLoop]: Abstraction has has 481 places, 444 transitions, 2983 flow [2022-01-19 13:22:09,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:09,231 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:22:09,231 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:22:09,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-19 13:22:09,231 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 13:22:09,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:22:09,232 INFO L85 PathProgramCache]: Analyzing trace with hash -594822665, now seen corresponding path program 3 times [2022-01-19 13:22:09,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:22:09,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039328084] [2022-01-19 13:22:09,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:22:09,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:22:09,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:22:09,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:22:09,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:22:09,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039328084] [2022-01-19 13:22:09,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039328084] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:22:09,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:22:09,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 13:22:09,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463009859] [2022-01-19 13:22:09,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:22:09,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 13:22:09,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:22:09,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 13:22:09,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-19 13:22:09,305 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 13:22:09,306 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 444 transitions, 2983 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:09,306 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:22:09,306 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 13:22:09,306 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:22:21,853 INFO L129 PetriNetUnfolder]: 15799/67182 cut-off events. [2022-01-19 13:22:21,853 INFO L130 PetriNetUnfolder]: For 139802/142351 co-relation queries the response was YES. [2022-01-19 13:22:23,230 INFO L84 FinitePrefix]: Finished finitePrefix Result has 173082 conditions, 67182 events. 15799/67182 cut-off events. For 139802/142351 co-relation queries the response was YES. Maximal size of possible extension queue 5003. Compared 1110702 event pairs, 8319 based on Foata normal form. 150/60773 useless extension candidates. Maximal degree in co-relation 172987. Up to 25779 conditions per place. [2022-01-19 13:22:23,570 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 101 selfloop transitions, 23 changer transitions 14/486 dead transitions. [2022-01-19 13:22:23,570 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 486 transitions, 3521 flow [2022-01-19 13:22:23,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-19 13:22:23,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-01-19 13:22:23,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3274 transitions. [2022-01-19 13:22:23,572 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8024509803921569 [2022-01-19 13:22:23,572 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3274 transitions. [2022-01-19 13:22:23,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3274 transitions. [2022-01-19 13:22:23,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:22:23,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3274 transitions. [2022-01-19 13:22:23,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 272.8333333333333) internal successors, (3274), 12 states have internal predecessors, (3274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:23,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 340.0) internal successors, (4420), 13 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:23,576 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 340.0) internal successors, (4420), 13 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:23,577 INFO L186 Difference]: Start difference. First operand has 481 places, 444 transitions, 2983 flow. Second operand 12 states and 3274 transitions. [2022-01-19 13:22:23,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 486 transitions, 3521 flow [2022-01-19 13:22:26,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 486 transitions, 3459 flow, removed 12 selfloop flow, removed 7 redundant places. [2022-01-19 13:22:26,940 INFO L242 Difference]: Finished difference. Result has 490 places, 457 transitions, 3144 flow [2022-01-19 13:22:26,941 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=2929, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3144, PETRI_PLACES=490, PETRI_TRANSITIONS=457} [2022-01-19 13:22:26,941 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 189 predicate places. [2022-01-19 13:22:26,941 INFO L470 AbstractCegarLoop]: Abstraction has has 490 places, 457 transitions, 3144 flow [2022-01-19 13:22:26,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:26,942 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:22:26,942 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:22:26,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-19 13:22:26,942 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 13:22:26,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:22:26,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1327646175, now seen corresponding path program 4 times [2022-01-19 13:22:26,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:22:26,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375606011] [2022-01-19 13:22:26,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:22:26,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:22:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:22:27,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:22:27,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:22:27,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375606011] [2022-01-19 13:22:27,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375606011] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:22:27,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:22:27,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 13:22:27,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125246277] [2022-01-19 13:22:27,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:22:27,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 13:22:27,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:22:27,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 13:22:27,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 13:22:27,008 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 13:22:27,009 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 490 places, 457 transitions, 3144 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:27,009 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:22:27,009 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 13:22:27,009 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:22:40,612 INFO L129 PetriNetUnfolder]: 16222/70970 cut-off events. [2022-01-19 13:22:40,612 INFO L130 PetriNetUnfolder]: For 175366/178177 co-relation queries the response was YES. [2022-01-19 13:22:41,853 INFO L84 FinitePrefix]: Finished finitePrefix Result has 191137 conditions, 70970 events. 16222/70970 cut-off events. For 175366/178177 co-relation queries the response was YES. Maximal size of possible extension queue 5304. Compared 1189590 event pairs, 7691 based on Foata normal form. 155/64572 useless extension candidates. Maximal degree in co-relation 191039. Up to 26467 conditions per place. [2022-01-19 13:22:42,013 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 104 selfloop transitions, 29 changer transitions 13/494 dead transitions. [2022-01-19 13:22:42,013 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 494 transitions, 3670 flow [2022-01-19 13:22:42,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 13:22:42,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 13:22:42,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3007 transitions. [2022-01-19 13:22:42,015 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8040106951871657 [2022-01-19 13:22:42,015 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3007 transitions. [2022-01-19 13:22:42,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3007 transitions. [2022-01-19 13:22:42,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:22:42,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3007 transitions. [2022-01-19 13:22:42,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 273.3636363636364) internal successors, (3007), 11 states have internal predecessors, (3007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:42,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 340.0) internal successors, (4080), 12 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:42,019 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 340.0) internal successors, (4080), 12 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:42,019 INFO L186 Difference]: Start difference. First operand has 490 places, 457 transitions, 3144 flow. Second operand 11 states and 3007 transitions. [2022-01-19 13:22:42,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 494 transitions, 3670 flow [2022-01-19 13:22:48,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 496 places, 494 transitions, 3602 flow, removed 34 selfloop flow, removed 2 redundant places. [2022-01-19 13:22:48,431 INFO L242 Difference]: Finished difference. Result has 504 places, 467 transitions, 3309 flow [2022-01-19 13:22:48,431 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=3090, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3309, PETRI_PLACES=504, PETRI_TRANSITIONS=467} [2022-01-19 13:22:48,432 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 203 predicate places. [2022-01-19 13:22:48,432 INFO L470 AbstractCegarLoop]: Abstraction has has 504 places, 467 transitions, 3309 flow [2022-01-19 13:22:48,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:48,432 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:22:48,432 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:22:48,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-19 13:22:48,432 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 13:22:48,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:22:48,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1832784447, now seen corresponding path program 5 times [2022-01-19 13:22:48,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:22:48,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420135354] [2022-01-19 13:22:48,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:22:48,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:22:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:22:48,492 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 13:22:48,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:22:48,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420135354] [2022-01-19 13:22:48,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420135354] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:22:48,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:22:48,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 13:22:48,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521679701] [2022-01-19 13:22:48,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:22:48,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 13:22:48,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:22:48,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 13:22:48,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 13:22:48,494 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 13:22:48,495 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 467 transitions, 3309 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:22:48,495 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:22:48,495 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 13:22:48,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:23:04,363 INFO L129 PetriNetUnfolder]: 16447/72177 cut-off events. [2022-01-19 13:23:04,363 INFO L130 PetriNetUnfolder]: For 216342/219358 co-relation queries the response was YES. [2022-01-19 13:23:06,078 INFO L84 FinitePrefix]: Finished finitePrefix Result has 206725 conditions, 72177 events. 16447/72177 cut-off events. For 216342/219358 co-relation queries the response was YES. Maximal size of possible extension queue 5487. Compared 1219607 event pairs, 8724 based on Foata normal form. 169/65113 useless extension candidates. Maximal degree in co-relation 206620. Up to 28965 conditions per place. [2022-01-19 13:23:06,258 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 106 selfloop transitions, 28 changer transitions 15/497 dead transitions. [2022-01-19 13:23:06,258 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 512 places, 497 transitions, 3794 flow [2022-01-19 13:23:06,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 13:23:06,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 13:23:06,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3005 transitions. [2022-01-19 13:23:06,261 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.803475935828877 [2022-01-19 13:23:06,261 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3005 transitions. [2022-01-19 13:23:06,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3005 transitions. [2022-01-19 13:23:06,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:23:06,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3005 transitions. [2022-01-19 13:23:06,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 273.1818181818182) internal successors, (3005), 11 states have internal predecessors, (3005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:06,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 340.0) internal successors, (4080), 12 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:06,266 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 340.0) internal successors, (4080), 12 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:06,266 INFO L186 Difference]: Start difference. First operand has 504 places, 467 transitions, 3309 flow. Second operand 11 states and 3005 transitions. [2022-01-19 13:23:06,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 512 places, 497 transitions, 3794 flow [2022-01-19 13:23:11,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 509 places, 497 transitions, 3724 flow, removed 26 selfloop flow, removed 3 redundant places. [2022-01-19 13:23:11,921 INFO L242 Difference]: Finished difference. Result has 515 places, 472 transitions, 3394 flow [2022-01-19 13:23:11,922 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=3243, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=467, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3394, PETRI_PLACES=515, PETRI_TRANSITIONS=472} [2022-01-19 13:23:11,922 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 214 predicate places. [2022-01-19 13:23:11,922 INFO L470 AbstractCegarLoop]: Abstraction has has 515 places, 472 transitions, 3394 flow [2022-01-19 13:23:11,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:11,923 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:23:11,923 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:23:11,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-19 13:23:11,923 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 13:23:11,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:23:11,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1405731671, now seen corresponding path program 6 times [2022-01-19 13:23:11,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:23:11,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213322557] [2022-01-19 13:23:11,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:23:11,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:23:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:23:11,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:23:11,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:23:11,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213322557] [2022-01-19 13:23:11,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213322557] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:23:11,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:23:11,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 13:23:11,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987842267] [2022-01-19 13:23:11,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:23:11,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 13:23:11,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:23:11,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 13:23:11,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-19 13:23:11,980 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 13:23:11,981 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 515 places, 472 transitions, 3394 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:11,981 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:23:11,981 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 13:23:11,981 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:23:27,060 INFO L129 PetriNetUnfolder]: 16463/72715 cut-off events. [2022-01-19 13:23:27,060 INFO L130 PetriNetUnfolder]: For 226443/229507 co-relation queries the response was YES. [2022-01-19 13:23:28,610 INFO L84 FinitePrefix]: Finished finitePrefix Result has 207868 conditions, 72715 events. 16463/72715 cut-off events. For 226443/229507 co-relation queries the response was YES. Maximal size of possible extension queue 5490. Compared 1231241 event pairs, 7863 based on Foata normal form. 196/66161 useless extension candidates. Maximal degree in co-relation 207759. Up to 26636 conditions per place. [2022-01-19 13:23:28,761 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 106 selfloop transitions, 32 changer transitions 19/503 dead transitions. [2022-01-19 13:23:28,761 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 503 transitions, 3890 flow [2022-01-19 13:23:28,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-19 13:23:28,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-01-19 13:23:28,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3273 transitions. [2022-01-19 13:23:28,763 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8022058823529412 [2022-01-19 13:23:28,763 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3273 transitions. [2022-01-19 13:23:28,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3273 transitions. [2022-01-19 13:23:28,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:23:28,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3273 transitions. [2022-01-19 13:23:28,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 272.75) internal successors, (3273), 12 states have internal predecessors, (3273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:28,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 340.0) internal successors, (4420), 13 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:28,768 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 340.0) internal successors, (4420), 13 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:28,768 INFO L186 Difference]: Start difference. First operand has 515 places, 472 transitions, 3394 flow. Second operand 12 states and 3273 transitions. [2022-01-19 13:23:28,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 503 transitions, 3890 flow [2022-01-19 13:23:35,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 503 transitions, 3815 flow, removed 19 selfloop flow, removed 4 redundant places. [2022-01-19 13:23:35,037 INFO L242 Difference]: Finished difference. Result has 526 places, 476 transitions, 3448 flow [2022-01-19 13:23:35,037 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=3333, PETRI_DIFFERENCE_MINUEND_PLACES=509, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3448, PETRI_PLACES=526, PETRI_TRANSITIONS=476} [2022-01-19 13:23:35,037 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 225 predicate places. [2022-01-19 13:23:35,037 INFO L470 AbstractCegarLoop]: Abstraction has has 526 places, 476 transitions, 3448 flow [2022-01-19 13:23:35,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:35,038 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:23:35,038 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:23:35,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-19 13:23:35,038 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 13:23:35,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:23:35,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1508317059, now seen corresponding path program 2 times [2022-01-19 13:23:35,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:23:35,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211252828] [2022-01-19 13:23:35,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:23:35,039 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:23:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:23:35,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:23:35,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:23:35,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211252828] [2022-01-19 13:23:35,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211252828] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:23:35,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:23:35,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 13:23:35,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983261124] [2022-01-19 13:23:35,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:23:35,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 13:23:35,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:23:35,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 13:23:35,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-19 13:23:35,132 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 13:23:35,138 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 476 transitions, 3448 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:35,138 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:23:35,138 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 13:23:35,138 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:23:49,511 INFO L129 PetriNetUnfolder]: 15136/68502 cut-off events. [2022-01-19 13:23:49,511 INFO L130 PetriNetUnfolder]: For 220957/224166 co-relation queries the response was YES. [2022-01-19 13:23:50,988 INFO L84 FinitePrefix]: Finished finitePrefix Result has 194271 conditions, 68502 events. 15136/68502 cut-off events. For 220957/224166 co-relation queries the response was YES. Maximal size of possible extension queue 5059. Compared 1154324 event pairs, 10510 based on Foata normal form. 75/61737 useless extension candidates. Maximal degree in co-relation 194158. Up to 33083 conditions per place. [2022-01-19 13:23:51,294 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 139 selfloop transitions, 19 changer transitions 14/518 dead transitions. [2022-01-19 13:23:51,294 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 535 places, 518 transitions, 4044 flow [2022-01-19 13:23:51,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-19 13:23:51,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-01-19 13:23:51,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3274 transitions. [2022-01-19 13:23:51,296 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8024509803921569 [2022-01-19 13:23:51,296 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3274 transitions. [2022-01-19 13:23:51,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3274 transitions. [2022-01-19 13:23:51,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:23:51,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3274 transitions. [2022-01-19 13:23:51,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 272.8333333333333) internal successors, (3274), 12 states have internal predecessors, (3274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:51,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 340.0) internal successors, (4420), 13 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:51,300 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 340.0) internal successors, (4420), 13 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:51,300 INFO L186 Difference]: Start difference. First operand has 526 places, 476 transitions, 3448 flow. Second operand 12 states and 3274 transitions. [2022-01-19 13:23:51,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 535 places, 518 transitions, 4044 flow [2022-01-19 13:23:56,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 518 transitions, 3976 flow, removed 22 selfloop flow, removed 4 redundant places. [2022-01-19 13:23:56,407 INFO L242 Difference]: Finished difference. Result has 538 places, 489 transitions, 3552 flow [2022-01-19 13:23:56,407 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=3384, PETRI_DIFFERENCE_MINUEND_PLACES=520, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3552, PETRI_PLACES=538, PETRI_TRANSITIONS=489} [2022-01-19 13:23:56,408 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 237 predicate places. [2022-01-19 13:23:56,408 INFO L470 AbstractCegarLoop]: Abstraction has has 538 places, 489 transitions, 3552 flow [2022-01-19 13:23:56,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:56,408 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:23:56,408 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:23:56,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-19 13:23:56,408 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 13:23:56,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:23:56,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1942609535, now seen corresponding path program 3 times [2022-01-19 13:23:56,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:23:56,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855404913] [2022-01-19 13:23:56,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:23:56,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:23:56,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:23:56,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:23:56,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:23:56,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855404913] [2022-01-19 13:23:56,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855404913] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:23:56,466 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:23:56,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 13:23:56,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714411126] [2022-01-19 13:23:56,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:23:56,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 13:23:56,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:23:56,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 13:23:56,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 13:23:56,468 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 13:23:56,468 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 538 places, 489 transitions, 3552 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:23:56,468 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:23:56,468 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 13:23:56,469 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:24:11,155 INFO L129 PetriNetUnfolder]: 15148/68517 cut-off events. [2022-01-19 13:24:11,156 INFO L130 PetriNetUnfolder]: For 212710/216069 co-relation queries the response was YES. [2022-01-19 13:24:13,169 INFO L84 FinitePrefix]: Finished finitePrefix Result has 194675 conditions, 68517 events. 15148/68517 cut-off events. For 212710/216069 co-relation queries the response was YES. Maximal size of possible extension queue 5048. Compared 1154140 event pairs, 10366 based on Foata normal form. 95/61908 useless extension candidates. Maximal degree in co-relation 194557. Up to 33299 conditions per place. [2022-01-19 13:24:13,315 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 137 selfloop transitions, 21 changer transitions 15/519 dead transitions. [2022-01-19 13:24:13,315 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 519 transitions, 4090 flow [2022-01-19 13:24:13,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 13:24:13,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 13:24:13,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3005 transitions. [2022-01-19 13:24:13,317 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.803475935828877 [2022-01-19 13:24:13,317 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3005 transitions. [2022-01-19 13:24:13,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3005 transitions. [2022-01-19 13:24:13,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:24:13,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3005 transitions. [2022-01-19 13:24:13,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 273.1818181818182) internal successors, (3005), 11 states have internal predecessors, (3005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:13,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 340.0) internal successors, (4080), 12 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:13,321 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 340.0) internal successors, (4080), 12 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:13,321 INFO L186 Difference]: Start difference. First operand has 538 places, 489 transitions, 3552 flow. Second operand 11 states and 3005 transitions. [2022-01-19 13:24:13,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 519 transitions, 4090 flow [2022-01-19 13:24:17,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 519 transitions, 4036 flow, removed 27 selfloop flow, removed 2 redundant places. [2022-01-19 13:24:17,503 INFO L242 Difference]: Finished difference. Result has 550 places, 494 transitions, 3619 flow [2022-01-19 13:24:17,503 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=3500, PETRI_DIFFERENCE_MINUEND_PLACES=534, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=489, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3619, PETRI_PLACES=550, PETRI_TRANSITIONS=494} [2022-01-19 13:24:17,503 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 249 predicate places. [2022-01-19 13:24:17,503 INFO L470 AbstractCegarLoop]: Abstraction has has 550 places, 494 transitions, 3619 flow [2022-01-19 13:24:17,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:17,504 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:24:17,504 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:24:17,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-19 13:24:17,504 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 13:24:17,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:24:17,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1480323245, now seen corresponding path program 4 times [2022-01-19 13:24:17,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:24:17,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283167876] [2022-01-19 13:24:17,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:24:17,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:24:17,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:24:17,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:24:17,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:24:17,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283167876] [2022-01-19 13:24:17,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283167876] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:24:17,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:24:17,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 13:24:17,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815410155] [2022-01-19 13:24:17,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:24:17,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 13:24:17,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:24:17,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 13:24:17,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 13:24:17,588 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 13:24:17,589 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 494 transitions, 3619 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:17,589 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:24:17,589 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 13:24:17,589 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:24:32,841 INFO L129 PetriNetUnfolder]: 15155/67928 cut-off events. [2022-01-19 13:24:32,841 INFO L130 PetriNetUnfolder]: For 219582/222711 co-relation queries the response was YES. [2022-01-19 13:24:34,728 INFO L84 FinitePrefix]: Finished finitePrefix Result has 196218 conditions, 67928 events. 15155/67928 cut-off events. For 219582/222711 co-relation queries the response was YES. Maximal size of possible extension queue 5102. Compared 1142639 event pairs, 10383 based on Foata normal form. 31/61203 useless extension candidates. Maximal degree in co-relation 196095. Up to 33552 conditions per place. [2022-01-19 13:24:34,879 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 149 selfloop transitions, 23 changer transitions 13/531 dead transitions. [2022-01-19 13:24:34,879 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 558 places, 531 transitions, 4229 flow [2022-01-19 13:24:34,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 13:24:34,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 13:24:34,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3007 transitions. [2022-01-19 13:24:34,881 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8040106951871657 [2022-01-19 13:24:34,881 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3007 transitions. [2022-01-19 13:24:34,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3007 transitions. [2022-01-19 13:24:34,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:24:34,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3007 transitions. [2022-01-19 13:24:34,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 273.3636363636364) internal successors, (3007), 11 states have internal predecessors, (3007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:34,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 340.0) internal successors, (4080), 12 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:34,884 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 340.0) internal successors, (4080), 12 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:34,885 INFO L186 Difference]: Start difference. First operand has 550 places, 494 transitions, 3619 flow. Second operand 11 states and 3007 transitions. [2022-01-19 13:24:34,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 558 places, 531 transitions, 4229 flow [2022-01-19 13:24:39,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 555 places, 531 transitions, 4195 flow, removed 11 selfloop flow, removed 3 redundant places. [2022-01-19 13:24:39,396 INFO L242 Difference]: Finished difference. Result has 563 places, 504 transitions, 3772 flow [2022-01-19 13:24:39,396 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=3597, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=477, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3772, PETRI_PLACES=563, PETRI_TRANSITIONS=504} [2022-01-19 13:24:39,397 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 262 predicate places. [2022-01-19 13:24:39,397 INFO L470 AbstractCegarLoop]: Abstraction has has 563 places, 504 transitions, 3772 flow [2022-01-19 13:24:39,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:39,397 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:24:39,397 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:24:39,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-19 13:24:39,397 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 13:24:39,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:24:39,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1988714171, now seen corresponding path program 5 times [2022-01-19 13:24:39,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:24:39,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305551984] [2022-01-19 13:24:39,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:24:39,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:24:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:24:39,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:24:39,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:24:39,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305551984] [2022-01-19 13:24:39,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305551984] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:24:39,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:24:39,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 13:24:39,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995211586] [2022-01-19 13:24:39,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:24:39,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 13:24:39,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:24:39,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 13:24:39,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-19 13:24:39,455 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 13:24:39,456 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 563 places, 504 transitions, 3772 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:39,456 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:24:39,456 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 13:24:39,456 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:24:54,672 INFO L129 PetriNetUnfolder]: 15189/68963 cut-off events. [2022-01-19 13:24:54,672 INFO L130 PetriNetUnfolder]: For 240216/243385 co-relation queries the response was YES. [2022-01-19 13:24:56,782 INFO L84 FinitePrefix]: Finished finitePrefix Result has 202261 conditions, 68963 events. 15189/68963 cut-off events. For 240216/243385 co-relation queries the response was YES. Maximal size of possible extension queue 5146. Compared 1163893 event pairs, 9767 based on Foata normal form. 35/62389 useless extension candidates. Maximal degree in co-relation 202132. Up to 31189 conditions per place. [2022-01-19 13:24:56,950 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 170 selfloop transitions, 34 changer transitions 16/566 dead transitions. [2022-01-19 13:24:56,951 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 566 transitions, 4641 flow [2022-01-19 13:24:56,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 13:24:56,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 13:24:56,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3556 transitions. [2022-01-19 13:24:56,953 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8045248868778281 [2022-01-19 13:24:56,953 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3556 transitions. [2022-01-19 13:24:56,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3556 transitions. [2022-01-19 13:24:56,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:24:56,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3556 transitions. [2022-01-19 13:24:56,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 273.53846153846155) internal successors, (3556), 13 states have internal predecessors, (3556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:56,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 340.0) internal successors, (4760), 14 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:56,958 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 340.0) internal successors, (4760), 14 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:24:56,959 INFO L186 Difference]: Start difference. First operand has 563 places, 504 transitions, 3772 flow. Second operand 13 states and 3556 transitions. [2022-01-19 13:24:56,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 566 transitions, 4641 flow [2022-01-19 13:25:01,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 569 places, 566 transitions, 4537 flow, removed 41 selfloop flow, removed 4 redundant places. [2022-01-19 13:25:01,715 INFO L242 Difference]: Finished difference. Result has 578 places, 513 transitions, 3907 flow [2022-01-19 13:25:01,715 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=3699, PETRI_DIFFERENCE_MINUEND_PLACES=557, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3907, PETRI_PLACES=578, PETRI_TRANSITIONS=513} [2022-01-19 13:25:01,715 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 277 predicate places. [2022-01-19 13:25:01,716 INFO L470 AbstractCegarLoop]: Abstraction has has 578 places, 513 transitions, 3907 flow [2022-01-19 13:25:01,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:01,716 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:25:01,716 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:25:01,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-19 13:25:01,716 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 13:25:01,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:25:01,716 INFO L85 PathProgramCache]: Analyzing trace with hash 303934179, now seen corresponding path program 2 times [2022-01-19 13:25:01,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:25:01,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654904561] [2022-01-19 13:25:01,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:25:01,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:25:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:25:01,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:25:01,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:25:01,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654904561] [2022-01-19 13:25:01,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654904561] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:25:01,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:25:01,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 13:25:01,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13331300] [2022-01-19 13:25:01,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:25:01,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 13:25:01,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:25:01,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 13:25:01,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 13:25:01,752 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:25:01,752 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 578 places, 513 transitions, 3907 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:01,752 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:25:01,752 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:25:01,752 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:25:11,474 INFO L129 PetriNetUnfolder]: 4723/50263 cut-off events. [2022-01-19 13:25:11,474 INFO L130 PetriNetUnfolder]: For 190514/192381 co-relation queries the response was YES. [2022-01-19 13:25:12,756 INFO L84 FinitePrefix]: Finished finitePrefix Result has 132187 conditions, 50263 events. 4723/50263 cut-off events. For 190514/192381 co-relation queries the response was YES. Maximal size of possible extension queue 1581. Compared 860715 event pairs, 910 based on Foata normal form. 88/48005 useless extension candidates. Maximal degree in co-relation 132052. Up to 4458 conditions per place. [2022-01-19 13:25:13,009 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 79 selfloop transitions, 38 changer transitions 2/533 dead transitions. [2022-01-19 13:25:13,009 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 533 transitions, 4300 flow [2022-01-19 13:25:13,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:25:13,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:25:13,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1558 transitions. [2022-01-19 13:25:13,010 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9164705882352941 [2022-01-19 13:25:13,010 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1558 transitions. [2022-01-19 13:25:13,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1558 transitions. [2022-01-19 13:25:13,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:25:13,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1558 transitions. [2022-01-19 13:25:13,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.6) internal successors, (1558), 5 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:13,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:13,013 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:13,013 INFO L186 Difference]: Start difference. First operand has 578 places, 513 transitions, 3907 flow. Second operand 5 states and 1558 transitions. [2022-01-19 13:25:13,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 533 transitions, 4300 flow [2022-01-19 13:25:15,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 533 transitions, 4175 flow, removed 9 selfloop flow, removed 7 redundant places. [2022-01-19 13:25:15,507 INFO L242 Difference]: Finished difference. Result has 575 places, 515 transitions, 3914 flow [2022-01-19 13:25:15,508 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=3724, PETRI_DIFFERENCE_MINUEND_PLACES=569, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3914, PETRI_PLACES=575, PETRI_TRANSITIONS=515} [2022-01-19 13:25:15,508 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 274 predicate places. [2022-01-19 13:25:15,508 INFO L470 AbstractCegarLoop]: Abstraction has has 575 places, 515 transitions, 3914 flow [2022-01-19 13:25:15,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:15,508 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:25:15,508 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:25:15,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-19 13:25:15,508 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 13:25:15,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:25:15,509 INFO L85 PathProgramCache]: Analyzing trace with hash 835775517, now seen corresponding path program 4 times [2022-01-19 13:25:15,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:25:15,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147387477] [2022-01-19 13:25:15,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:25:15,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:25:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:25:15,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:25:15,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:25:15,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147387477] [2022-01-19 13:25:15,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147387477] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:25:15,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:25:15,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:25:15,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976918799] [2022-01-19 13:25:15,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:25:15,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:25:15,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:25:15,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:25:15,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:25:15,545 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:25:15,545 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 515 transitions, 3914 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:15,545 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:25:15,545 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:25:15,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:25:25,772 INFO L129 PetriNetUnfolder]: 5006/53708 cut-off events. [2022-01-19 13:25:25,772 INFO L130 PetriNetUnfolder]: For 195305/196991 co-relation queries the response was YES. [2022-01-19 13:25:27,291 INFO L84 FinitePrefix]: Finished finitePrefix Result has 136941 conditions, 53708 events. 5006/53708 cut-off events. For 195305/196991 co-relation queries the response was YES. Maximal size of possible extension queue 1518. Compared 922517 event pairs, 888 based on Foata normal form. 152/51487 useless extension candidates. Maximal degree in co-relation 136807. Up to 3123 conditions per place. [2022-01-19 13:25:27,375 INFO L132 encePairwiseOnDemand]: 335/340 looper letters, 119 selfloop transitions, 24 changer transitions 0/557 dead transitions. [2022-01-19 13:25:27,375 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 557 transitions, 4767 flow [2022-01-19 13:25:27,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:25:27,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:25:27,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1556 transitions. [2022-01-19 13:25:27,377 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9152941176470588 [2022-01-19 13:25:27,377 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1556 transitions. [2022-01-19 13:25:27,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1556 transitions. [2022-01-19 13:25:27,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:25:27,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1556 transitions. [2022-01-19 13:25:27,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.2) internal successors, (1556), 5 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:27,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:27,379 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:27,379 INFO L186 Difference]: Start difference. First operand has 575 places, 515 transitions, 3914 flow. Second operand 5 states and 1556 transitions. [2022-01-19 13:25:27,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 557 transitions, 4767 flow [2022-01-19 13:25:30,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 557 transitions, 4739 flow, removed 13 selfloop flow, removed 1 redundant places. [2022-01-19 13:25:30,231 INFO L242 Difference]: Finished difference. Result has 580 places, 523 transitions, 4194 flow [2022-01-19 13:25:30,231 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=3879, PETRI_DIFFERENCE_MINUEND_PLACES=574, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4194, PETRI_PLACES=580, PETRI_TRANSITIONS=523} [2022-01-19 13:25:30,231 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 279 predicate places. [2022-01-19 13:25:30,231 INFO L470 AbstractCegarLoop]: Abstraction has has 580 places, 523 transitions, 4194 flow [2022-01-19 13:25:30,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:30,232 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:25:30,232 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:25:30,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-19 13:25:30,232 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 13:25:30,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:25:30,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1897944631, now seen corresponding path program 5 times [2022-01-19 13:25:30,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:25:30,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092585597] [2022-01-19 13:25:30,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:25:30,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:25:30,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:25:30,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:25:30,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:25:30,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092585597] [2022-01-19 13:25:30,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092585597] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:25:30,279 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:25:30,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:25:30,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452431038] [2022-01-19 13:25:30,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:25:30,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:25:30,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:25:30,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:25:30,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:25:30,280 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:25:30,281 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 580 places, 523 transitions, 4194 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:30,281 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:25:30,281 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:25:30,281 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:25:39,983 INFO L129 PetriNetUnfolder]: 4805/50484 cut-off events. [2022-01-19 13:25:39,983 INFO L130 PetriNetUnfolder]: For 193667/194999 co-relation queries the response was YES. [2022-01-19 13:25:41,365 INFO L84 FinitePrefix]: Finished finitePrefix Result has 133262 conditions, 50484 events. 4805/50484 cut-off events. For 193667/194999 co-relation queries the response was YES. Maximal size of possible extension queue 1558. Compared 861741 event pairs, 840 based on Foata normal form. 33/48467 useless extension candidates. Maximal degree in co-relation 133126. Up to 3111 conditions per place. [2022-01-19 13:25:41,447 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 101 selfloop transitions, 30 changer transitions 0/545 dead transitions. [2022-01-19 13:25:41,447 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 545 transitions, 4608 flow [2022-01-19 13:25:41,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:25:41,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:25:41,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1558 transitions. [2022-01-19 13:25:41,448 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9164705882352941 [2022-01-19 13:25:41,448 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1558 transitions. [2022-01-19 13:25:41,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1558 transitions. [2022-01-19 13:25:41,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:25:41,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1558 transitions. [2022-01-19 13:25:41,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.6) internal successors, (1558), 5 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:41,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:41,450 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:41,450 INFO L186 Difference]: Start difference. First operand has 580 places, 523 transitions, 4194 flow. Second operand 5 states and 1558 transitions. [2022-01-19 13:25:41,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 545 transitions, 4608 flow [2022-01-19 13:25:44,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 583 places, 545 transitions, 4605 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 13:25:44,691 INFO L242 Difference]: Finished difference. Result has 583 places, 522 transitions, 4232 flow [2022-01-19 13:25:44,692 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4172, PETRI_DIFFERENCE_MINUEND_PLACES=579, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4232, PETRI_PLACES=583, PETRI_TRANSITIONS=522} [2022-01-19 13:25:44,692 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 282 predicate places. [2022-01-19 13:25:44,693 INFO L470 AbstractCegarLoop]: Abstraction has has 583 places, 522 transitions, 4232 flow [2022-01-19 13:25:44,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:44,693 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:25:44,693 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:25:44,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-19 13:25:44,693 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 13:25:44,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:25:44,696 INFO L85 PathProgramCache]: Analyzing trace with hash 664043035, now seen corresponding path program 6 times [2022-01-19 13:25:44,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:25:44,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818480257] [2022-01-19 13:25:44,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:25:44,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:25:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:25:44,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:25:44,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:25:44,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818480257] [2022-01-19 13:25:44,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818480257] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:25:44,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:25:44,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-19 13:25:44,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493198335] [2022-01-19 13:25:44,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:25:44,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-19 13:25:44,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:25:44,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-19 13:25:44,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-19 13:25:44,834 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 265 out of 340 [2022-01-19 13:25:44,835 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 522 transitions, 4232 flow. Second operand has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:25:44,835 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:25:44,835 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 265 of 340 [2022-01-19 13:25:44,835 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:26:00,010 INFO L129 PetriNetUnfolder]: 14405/65559 cut-off events. [2022-01-19 13:26:00,010 INFO L130 PetriNetUnfolder]: For 224384/227352 co-relation queries the response was YES. [2022-01-19 13:26:01,905 INFO L84 FinitePrefix]: Finished finitePrefix Result has 188133 conditions, 65559 events. 14405/65559 cut-off events. For 224384/227352 co-relation queries the response was YES. Maximal size of possible extension queue 4786. Compared 1097036 event pairs, 9884 based on Foata normal form. 35/59181 useless extension candidates. Maximal degree in co-relation 187997. Up to 31639 conditions per place. [2022-01-19 13:26:02,211 INFO L132 encePairwiseOnDemand]: 331/340 looper letters, 149 selfloop transitions, 32 changer transitions 17/553 dead transitions. [2022-01-19 13:26:02,211 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 594 places, 553 transitions, 4833 flow [2022-01-19 13:26:02,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-19 13:26:02,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-01-19 13:26:02,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3273 transitions. [2022-01-19 13:26:02,219 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8022058823529412 [2022-01-19 13:26:02,219 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3273 transitions. [2022-01-19 13:26:02,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3273 transitions. [2022-01-19 13:26:02,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:26:02,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3273 transitions. [2022-01-19 13:26:02,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 272.75) internal successors, (3273), 12 states have internal predecessors, (3273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:26:02,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 340.0) internal successors, (4420), 13 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:26:02,223 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 340.0) internal successors, (4420), 13 states have internal predecessors, (4420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:26:02,223 INFO L186 Difference]: Start difference. First operand has 583 places, 522 transitions, 4232 flow. Second operand 12 states and 3273 transitions. [2022-01-19 13:26:02,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 594 places, 553 transitions, 4833 flow [2022-01-19 13:26:06,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 553 transitions, 4792 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 13:26:06,128 INFO L242 Difference]: Finished difference. Result has 598 places, 528 transitions, 4366 flow [2022-01-19 13:26:06,128 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4191, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4366, PETRI_PLACES=598, PETRI_TRANSITIONS=528} [2022-01-19 13:26:06,128 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 297 predicate places. [2022-01-19 13:26:06,128 INFO L470 AbstractCegarLoop]: Abstraction has has 598 places, 528 transitions, 4366 flow [2022-01-19 13:26:06,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 270.75) internal successors, (2166), 8 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:26:06,129 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:26:06,129 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:26:06,129 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-19 13:26:06,129 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 13:26:06,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:26:06,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1339106453, now seen corresponding path program 4 times [2022-01-19 13:26:06,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:26:06,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377841599] [2022-01-19 13:26:06,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:26:06,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:26:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:26:06,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:26:06,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:26:06,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377841599] [2022-01-19 13:26:06,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377841599] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:26:06,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:26:06,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2022-01-19 13:26:06,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914931990] [2022-01-19 13:26:06,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:26:06,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-01-19 13:26:06,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:26:06,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-01-19 13:26:06,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2022-01-19 13:26:06,687 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 340 [2022-01-19 13:26:06,689 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 598 places, 528 transitions, 4366 flow. Second operand has 29 states, 29 states have (on average 227.44827586206895) internal successors, (6596), 29 states have internal predecessors, (6596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:26:06,689 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:26:06,689 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 340 [2022-01-19 13:26:06,689 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:26:36,115 INFO L129 PetriNetUnfolder]: 27696/133496 cut-off events. [2022-01-19 13:26:36,115 INFO L130 PetriNetUnfolder]: For 372099/381897 co-relation queries the response was YES. [2022-01-19 13:26:40,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 303651 conditions, 133496 events. 27696/133496 cut-off events. For 372099/381897 co-relation queries the response was YES. Maximal size of possible extension queue 5258. Compared 2385663 event pairs, 15053 based on Foata normal form. 2620/121014 useless extension candidates. Maximal degree in co-relation 303509. Up to 9489 conditions per place. [2022-01-19 13:26:40,838 INFO L132 encePairwiseOnDemand]: 300/340 looper letters, 399 selfloop transitions, 45 changer transitions 72/863 dead transitions. [2022-01-19 13:26:40,839 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 863 transitions, 7511 flow [2022-01-19 13:26:40,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-19 13:26:40,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-01-19 13:26:40,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 10223 transitions. [2022-01-19 13:26:40,843 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.683355614973262 [2022-01-19 13:26:40,843 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 10223 transitions. [2022-01-19 13:26:40,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 10223 transitions. [2022-01-19 13:26:40,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:26:40,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 10223 transitions. [2022-01-19 13:26:40,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 232.3409090909091) internal successors, (10223), 44 states have internal predecessors, (10223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:26:40,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 340.0) internal successors, (15300), 45 states have internal predecessors, (15300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:26:40,857 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 340.0) internal successors, (15300), 45 states have internal predecessors, (15300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:26:40,857 INFO L186 Difference]: Start difference. First operand has 598 places, 528 transitions, 4366 flow. Second operand 44 states and 10223 transitions. [2022-01-19 13:26:40,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 863 transitions, 7511 flow [2022-01-19 13:26:46,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 635 places, 863 transitions, 7337 flow, removed 74 selfloop flow, removed 4 redundant places. [2022-01-19 13:26:46,363 INFO L242 Difference]: Finished difference. Result has 644 places, 502 transitions, 4142 flow [2022-01-19 13:26:46,364 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4302, PETRI_DIFFERENCE_MINUEND_PLACES=592, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=4142, PETRI_PLACES=644, PETRI_TRANSITIONS=502} [2022-01-19 13:26:46,364 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 343 predicate places. [2022-01-19 13:26:46,364 INFO L470 AbstractCegarLoop]: Abstraction has has 644 places, 502 transitions, 4142 flow [2022-01-19 13:26:46,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 227.44827586206895) internal successors, (6596), 29 states have internal predecessors, (6596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:26:46,365 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:26:46,365 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:26:46,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-19 13:26:46,365 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 13:26:46,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:26:46,365 INFO L85 PathProgramCache]: Analyzing trace with hash -389523893, now seen corresponding path program 6 times [2022-01-19 13:26:46,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:26:46,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498848150] [2022-01-19 13:26:46,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:26:46,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:26:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:26:46,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:26:46,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:26:46,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498848150] [2022-01-19 13:26:46,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498848150] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:26:46,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:26:46,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:26:46,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309866965] [2022-01-19 13:26:46,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:26:46,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:26:46,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:26:46,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:26:46,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:26:46,405 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:26:46,405 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 644 places, 502 transitions, 4142 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:26:46,406 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:26:46,406 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:26:46,406 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:26:54,646 INFO L129 PetriNetUnfolder]: 3917/39289 cut-off events. [2022-01-19 13:26:54,647 INFO L130 PetriNetUnfolder]: For 189914/192157 co-relation queries the response was YES. [2022-01-19 13:26:55,543 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110899 conditions, 39289 events. 3917/39289 cut-off events. For 189914/192157 co-relation queries the response was YES. Maximal size of possible extension queue 1125. Compared 635266 event pairs, 689 based on Foata normal form. 45/37277 useless extension candidates. Maximal degree in co-relation 110750. Up to 1967 conditions per place. [2022-01-19 13:26:55,605 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 107 selfloop transitions, 31 changer transitions 2/534 dead transitions. [2022-01-19 13:26:55,605 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 626 places, 534 transitions, 4844 flow [2022-01-19 13:26:55,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:26:55,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:26:55,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1556 transitions. [2022-01-19 13:26:55,607 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9152941176470588 [2022-01-19 13:26:55,607 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1556 transitions. [2022-01-19 13:26:55,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1556 transitions. [2022-01-19 13:26:55,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:26:55,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1556 transitions. [2022-01-19 13:26:55,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.2) internal successors, (1556), 5 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:26:55,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:26:55,609 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:26:55,609 INFO L186 Difference]: Start difference. First operand has 644 places, 502 transitions, 4142 flow. Second operand 5 states and 1556 transitions. [2022-01-19 13:26:55,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 626 places, 534 transitions, 4844 flow [2022-01-19 13:26:57,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 534 transitions, 4708 flow, removed 17 selfloop flow, removed 53 redundant places. [2022-01-19 13:26:57,340 INFO L242 Difference]: Finished difference. Result has 575 places, 505 transitions, 4201 flow [2022-01-19 13:26:57,340 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4006, PETRI_DIFFERENCE_MINUEND_PLACES=569, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=471, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4201, PETRI_PLACES=575, PETRI_TRANSITIONS=505} [2022-01-19 13:26:57,341 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 274 predicate places. [2022-01-19 13:26:57,341 INFO L470 AbstractCegarLoop]: Abstraction has has 575 places, 505 transitions, 4201 flow [2022-01-19 13:26:57,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:26:57,341 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:26:57,341 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:26:57,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-19 13:26:57,341 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 13:26:57,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:26:57,342 INFO L85 PathProgramCache]: Analyzing trace with hash -148283951, now seen corresponding path program 4 times [2022-01-19 13:26:57,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:26:57,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661504533] [2022-01-19 13:26:57,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:26:57,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:26:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:26:57,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:26:57,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:26:57,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661504533] [2022-01-19 13:26:57,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661504533] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:26:57,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:26:57,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 13:26:57,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395083137] [2022-01-19 13:26:57,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:26:57,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 13:26:57,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:26:57,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 13:26:57,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 13:26:57,372 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:26:57,372 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 575 places, 505 transitions, 4201 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:26:57,372 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:26:57,372 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:26:57,373 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:27:04,710 INFO L129 PetriNetUnfolder]: 3849/38733 cut-off events. [2022-01-19 13:27:04,710 INFO L130 PetriNetUnfolder]: For 160208/161577 co-relation queries the response was YES. [2022-01-19 13:27:05,490 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99295 conditions, 38733 events. 3849/38733 cut-off events. For 160208/161577 co-relation queries the response was YES. Maximal size of possible extension queue 1152. Compared 626071 event pairs, 571 based on Foata normal form. 194/36928 useless extension candidates. Maximal degree in co-relation 99160. Up to 2083 conditions per place. [2022-01-19 13:27:05,549 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 89 selfloop transitions, 40 changer transitions 2/525 dead transitions. [2022-01-19 13:27:05,549 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 579 places, 525 transitions, 4514 flow [2022-01-19 13:27:05,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:27:05,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:27:05,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1560 transitions. [2022-01-19 13:27:05,550 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9176470588235294 [2022-01-19 13:27:05,550 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1560 transitions. [2022-01-19 13:27:05,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1560 transitions. [2022-01-19 13:27:05,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:27:05,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1560 transitions. [2022-01-19 13:27:05,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 312.0) internal successors, (1560), 5 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:27:05,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:27:05,552 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:27:05,552 INFO L186 Difference]: Start difference. First operand has 575 places, 505 transitions, 4201 flow. Second operand 5 states and 1560 transitions. [2022-01-19 13:27:05,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 579 places, 525 transitions, 4514 flow [2022-01-19 13:27:06,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 575 places, 525 transitions, 4405 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-01-19 13:27:06,757 INFO L242 Difference]: Finished difference. Result has 576 places, 502 transitions, 4079 flow [2022-01-19 13:27:06,758 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=3986, PETRI_DIFFERENCE_MINUEND_PLACES=571, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4079, PETRI_PLACES=576, PETRI_TRANSITIONS=502} [2022-01-19 13:27:06,758 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 275 predicate places. [2022-01-19 13:27:06,758 INFO L470 AbstractCegarLoop]: Abstraction has has 576 places, 502 transitions, 4079 flow [2022-01-19 13:27:06,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:27:06,758 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:27:06,759 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:27:06,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-19 13:27:06,759 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 13:27:06,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:27:06,759 INFO L85 PathProgramCache]: Analyzing trace with hash -1054970379, now seen corresponding path program 7 times [2022-01-19 13:27:06,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:27:06,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645147266] [2022-01-19 13:27:06,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:27:06,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:27:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:27:06,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:27:06,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:27:06,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645147266] [2022-01-19 13:27:06,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645147266] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:27:06,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:27:06,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:27:06,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920856194] [2022-01-19 13:27:06,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:27:06,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:27:06,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:27:06,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:27:06,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:27:06,824 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:27:06,825 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 576 places, 502 transitions, 4079 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:27:06,825 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:27:06,825 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:27:06,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:27:14,477 INFO L129 PetriNetUnfolder]: 3840/39720 cut-off events. [2022-01-19 13:27:14,477 INFO L130 PetriNetUnfolder]: For 158488/160555 co-relation queries the response was YES. [2022-01-19 13:27:15,094 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99855 conditions, 39720 events. 3840/39720 cut-off events. For 158488/160555 co-relation queries the response was YES. Maximal size of possible extension queue 1146. Compared 645310 event pairs, 736 based on Foata normal form. 86/37656 useless extension candidates. Maximal degree in co-relation 99719. Up to 1893 conditions per place. [2022-01-19 13:27:15,154 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 105 selfloop transitions, 35 changer transitions 2/536 dead transitions. [2022-01-19 13:27:15,155 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 580 places, 536 transitions, 4839 flow [2022-01-19 13:27:15,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:27:15,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:27:15,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1554 transitions. [2022-01-19 13:27:15,156 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9141176470588235 [2022-01-19 13:27:15,156 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1554 transitions. [2022-01-19 13:27:15,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1554 transitions. [2022-01-19 13:27:15,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:27:15,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1554 transitions. [2022-01-19 13:27:15,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 310.8) internal successors, (1554), 5 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:27:15,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:27:15,158 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:27:15,158 INFO L186 Difference]: Start difference. First operand has 576 places, 502 transitions, 4079 flow. Second operand 5 states and 1554 transitions. [2022-01-19 13:27:15,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 580 places, 536 transitions, 4839 flow [2022-01-19 13:27:16,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 536 transitions, 4811 flow, removed 14 selfloop flow, removed 0 redundant places. [2022-01-19 13:27:16,556 INFO L242 Difference]: Finished difference. Result has 583 places, 511 transitions, 4465 flow [2022-01-19 13:27:16,556 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4059, PETRI_DIFFERENCE_MINUEND_PLACES=576, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4465, PETRI_PLACES=583, PETRI_TRANSITIONS=511} [2022-01-19 13:27:16,556 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 282 predicate places. [2022-01-19 13:27:16,556 INFO L470 AbstractCegarLoop]: Abstraction has has 583 places, 511 transitions, 4465 flow [2022-01-19 13:27:16,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:27:16,557 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:27:16,557 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:27:16,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-19 13:27:16,557 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 13:27:16,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:27:16,557 INFO L85 PathProgramCache]: Analyzing trace with hash 388364671, now seen corresponding path program 8 times [2022-01-19 13:27:16,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:27:16,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199155002] [2022-01-19 13:27:16,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:27:16,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:27:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:27:16,599 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 13:27:16,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:27:16,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199155002] [2022-01-19 13:27:16,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199155002] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:27:16,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:27:16,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:27:16,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099221418] [2022-01-19 13:27:16,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:27:16,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:27:16,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:27:16,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:27:16,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:27:16,601 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:27:16,602 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 511 transitions, 4465 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:27:16,602 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:27:16,602 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:27:16,602 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:27:24,030 INFO L129 PetriNetUnfolder]: 3835/39254 cut-off events. [2022-01-19 13:27:24,031 INFO L130 PetriNetUnfolder]: For 161736/163606 co-relation queries the response was YES. [2022-01-19 13:27:24,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 99078 conditions, 39254 events. 3835/39254 cut-off events. For 161736/163606 co-relation queries the response was YES. Maximal size of possible extension queue 1164. Compared 635424 event pairs, 703 based on Foata normal form. 72/37154 useless extension candidates. Maximal degree in co-relation 98938. Up to 2085 conditions per place. [2022-01-19 13:27:24,757 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 93 selfloop transitions, 41 changer transitions 6/534 dead transitions. [2022-01-19 13:27:24,757 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 587 places, 534 transitions, 4907 flow [2022-01-19 13:27:24,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:27:24,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:27:24,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1558 transitions. [2022-01-19 13:27:24,758 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9164705882352941 [2022-01-19 13:27:24,758 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1558 transitions. [2022-01-19 13:27:24,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1558 transitions. [2022-01-19 13:27:24,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:27:24,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1558 transitions. [2022-01-19 13:27:24,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.6) internal successors, (1558), 5 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:27:24,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:27:24,760 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:27:24,760 INFO L186 Difference]: Start difference. First operand has 583 places, 511 transitions, 4465 flow. Second operand 5 states and 1558 transitions. [2022-01-19 13:27:24,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 587 places, 534 transitions, 4907 flow [2022-01-19 13:27:26,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 534 transitions, 4874 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 13:27:26,234 INFO L242 Difference]: Finished difference. Result has 587 places, 511 transitions, 4558 flow [2022-01-19 13:27:26,235 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4416, PETRI_DIFFERENCE_MINUEND_PLACES=581, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=510, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4558, PETRI_PLACES=587, PETRI_TRANSITIONS=511} [2022-01-19 13:27:26,235 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 286 predicate places. [2022-01-19 13:27:26,235 INFO L470 AbstractCegarLoop]: Abstraction has has 587 places, 511 transitions, 4558 flow [2022-01-19 13:27:26,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:27:26,235 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:27:26,235 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:27:26,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-19 13:27:26,235 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 13:27:26,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:27:26,236 INFO L85 PathProgramCache]: Analyzing trace with hash 92457819, now seen corresponding path program 6 times [2022-01-19 13:27:26,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:27:26,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320964062] [2022-01-19 13:27:26,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:27:26,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:27:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:27:26,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:27:26,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:27:26,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320964062] [2022-01-19 13:27:26,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320964062] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:27:26,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:27:26,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:27:26,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176886903] [2022-01-19 13:27:26,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:27:26,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:27:26,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:27:26,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:27:26,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:27:26,276 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:27:26,277 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 587 places, 511 transitions, 4558 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:27:26,277 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:27:26,277 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:27:26,277 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:27:33,523 INFO L129 PetriNetUnfolder]: 3749/37348 cut-off events. [2022-01-19 13:27:33,524 INFO L130 PetriNetUnfolder]: For 169154/170692 co-relation queries the response was YES. [2022-01-19 13:27:34,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 96174 conditions, 37348 events. 3749/37348 cut-off events. For 169154/170692 co-relation queries the response was YES. Maximal size of possible extension queue 1131. Compared 599380 event pairs, 610 based on Foata normal form. 29/35249 useless extension candidates. Maximal degree in co-relation 96032. Up to 1700 conditions per place. [2022-01-19 13:27:34,181 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 122 selfloop transitions, 27 changer transitions 1/544 dead transitions. [2022-01-19 13:27:34,181 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 544 transitions, 5293 flow [2022-01-19 13:27:34,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:27:34,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:27:34,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1559 transitions. [2022-01-19 13:27:34,183 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9170588235294118 [2022-01-19 13:27:34,183 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1559 transitions. [2022-01-19 13:27:34,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1559 transitions. [2022-01-19 13:27:34,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:27:34,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1559 transitions. [2022-01-19 13:27:34,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.8) internal successors, (1559), 5 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:27:34,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:27:34,185 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:27:34,185 INFO L186 Difference]: Start difference. First operand has 587 places, 511 transitions, 4558 flow. Second operand 5 states and 1559 transitions. [2022-01-19 13:27:34,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 544 transitions, 5293 flow [2022-01-19 13:27:35,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 544 transitions, 5232 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-01-19 13:27:35,700 INFO L242 Difference]: Finished difference. Result has 591 places, 514 transitions, 4702 flow [2022-01-19 13:27:35,701 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4502, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4702, PETRI_PLACES=591, PETRI_TRANSITIONS=514} [2022-01-19 13:27:35,701 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 290 predicate places. [2022-01-19 13:27:35,701 INFO L470 AbstractCegarLoop]: Abstraction has has 591 places, 514 transitions, 4702 flow [2022-01-19 13:27:35,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:27:35,701 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:27:35,701 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:27:35,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-19 13:27:35,701 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 13:27:35,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:27:35,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1307940441, now seen corresponding path program 7 times [2022-01-19 13:27:35,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:27:35,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080158191] [2022-01-19 13:27:35,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:27:35,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:27:35,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:27:35,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:27:35,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:27:35,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080158191] [2022-01-19 13:27:35,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080158191] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:27:35,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:27:35,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:27:35,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798420762] [2022-01-19 13:27:35,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:27:35,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:27:35,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:27:35,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:27:35,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:27:35,738 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:27:35,739 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 514 transitions, 4702 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:27:35,739 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:27:35,739 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:27:35,739 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:27:43,240 INFO L129 PetriNetUnfolder]: 3784/38434 cut-off events. [2022-01-19 13:27:43,241 INFO L130 PetriNetUnfolder]: For 174504/176168 co-relation queries the response was YES. [2022-01-19 13:27:43,968 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98858 conditions, 38434 events. 3784/38434 cut-off events. For 174504/176168 co-relation queries the response was YES. Maximal size of possible extension queue 1173. Compared 620699 event pairs, 617 based on Foata normal form. 112/36475 useless extension candidates. Maximal degree in co-relation 98715. Up to 2052 conditions per place. [2022-01-19 13:27:44,027 INFO L132 encePairwiseOnDemand]: 336/340 looper letters, 126 selfloop transitions, 12 changer transitions 5/537 dead transitions. [2022-01-19 13:27:44,028 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 537 transitions, 5208 flow [2022-01-19 13:27:44,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:27:44,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:27:44,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1548 transitions. [2022-01-19 13:27:44,029 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9105882352941177 [2022-01-19 13:27:44,029 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1548 transitions. [2022-01-19 13:27:44,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1548 transitions. [2022-01-19 13:27:44,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:27:44,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1548 transitions. [2022-01-19 13:27:44,030 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 309.6) internal successors, (1548), 5 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:27:44,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:27:44,031 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:27:44,031 INFO L186 Difference]: Start difference. First operand has 591 places, 514 transitions, 4702 flow. Second operand 5 states and 1548 transitions. [2022-01-19 13:27:44,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 537 transitions, 5208 flow [2022-01-19 13:27:45,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 537 transitions, 5181 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-01-19 13:27:45,683 INFO L242 Difference]: Finished difference. Result has 593 places, 511 transitions, 4630 flow [2022-01-19 13:27:45,683 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4644, PETRI_DIFFERENCE_MINUEND_PLACES=589, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4630, PETRI_PLACES=593, PETRI_TRANSITIONS=511} [2022-01-19 13:27:45,683 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 292 predicate places. [2022-01-19 13:27:45,683 INFO L470 AbstractCegarLoop]: Abstraction has has 593 places, 511 transitions, 4630 flow [2022-01-19 13:27:45,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:27:45,683 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:27:45,684 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:27:45,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-19 13:27:45,684 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 13:27:45,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:27:45,684 INFO L85 PathProgramCache]: Analyzing trace with hash -555172231, now seen corresponding path program 3 times [2022-01-19 13:27:45,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:27:45,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825526184] [2022-01-19 13:27:45,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:27:45,684 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:27:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:27:45,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:27:45,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:27:45,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825526184] [2022-01-19 13:27:45,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825526184] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:27:45,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:27:45,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 13:27:45,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94131115] [2022-01-19 13:27:45,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:27:45,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 13:27:45,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:27:45,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 13:27:45,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 13:27:45,720 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:27:45,720 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 511 transitions, 4630 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:27:45,720 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:27:45,721 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:27:45,721 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:27:52,201 INFO L129 PetriNetUnfolder]: 3514/33747 cut-off events. [2022-01-19 13:27:52,201 INFO L130 PetriNetUnfolder]: For 160529/162332 co-relation queries the response was YES. [2022-01-19 13:27:52,653 INFO L84 FinitePrefix]: Finished finitePrefix Result has 90006 conditions, 33747 events. 3514/33747 cut-off events. For 160529/162332 co-relation queries the response was YES. Maximal size of possible extension queue 1066. Compared 531886 event pairs, 910 based on Foata normal form. 89/31850 useless extension candidates. Maximal degree in co-relation 89864. Up to 3171 conditions per place. [2022-01-19 13:27:52,705 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 89 selfloop transitions, 38 changer transitions 3/524 dead transitions. [2022-01-19 13:27:52,706 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 524 transitions, 4915 flow [2022-01-19 13:27:52,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:27:52,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:27:52,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1554 transitions. [2022-01-19 13:27:52,707 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9141176470588235 [2022-01-19 13:27:52,707 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1554 transitions. [2022-01-19 13:27:52,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1554 transitions. [2022-01-19 13:27:52,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:27:52,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1554 transitions. [2022-01-19 13:27:52,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 310.8) internal successors, (1554), 5 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:27:52,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:27:52,709 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:27:52,709 INFO L186 Difference]: Start difference. First operand has 593 places, 511 transitions, 4630 flow. Second operand 5 states and 1554 transitions. [2022-01-19 13:27:52,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 524 transitions, 4915 flow [2022-01-19 13:27:54,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 592 places, 524 transitions, 4874 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 13:27:54,198 INFO L242 Difference]: Finished difference. Result has 592 places, 507 transitions, 4576 flow [2022-01-19 13:27:54,198 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4500, PETRI_DIFFERENCE_MINUEND_PLACES=588, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4576, PETRI_PLACES=592, PETRI_TRANSITIONS=507} [2022-01-19 13:27:54,199 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 291 predicate places. [2022-01-19 13:27:54,199 INFO L470 AbstractCegarLoop]: Abstraction has has 592 places, 507 transitions, 4576 flow [2022-01-19 13:27:54,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:27:54,199 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:27:54,199 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:27:54,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-19 13:27:54,199 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 13:27:54,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:27:54,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1065020315, now seen corresponding path program 4 times [2022-01-19 13:27:54,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:27:54,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498944929] [2022-01-19 13:27:54,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:27:54,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:27:54,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:27:54,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:27:54,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:27:54,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498944929] [2022-01-19 13:27:54,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498944929] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:27:54,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:27:54,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 13:27:54,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719485854] [2022-01-19 13:27:54,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:27:54,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 13:27:54,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:27:54,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 13:27:54,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 13:27:54,236 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:27:54,236 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 592 places, 507 transitions, 4576 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:27:54,236 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:27:54,236 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:27:54,236 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:28:00,827 INFO L129 PetriNetUnfolder]: 3490/33329 cut-off events. [2022-01-19 13:28:00,828 INFO L130 PetriNetUnfolder]: For 156388/158203 co-relation queries the response was YES. [2022-01-19 13:28:01,737 INFO L84 FinitePrefix]: Finished finitePrefix Result has 89493 conditions, 33329 events. 3490/33329 cut-off events. For 156388/158203 co-relation queries the response was YES. Maximal size of possible extension queue 1055. Compared 524023 event pairs, 1006 based on Foata normal form. 23/31345 useless extension candidates. Maximal degree in co-relation 89352. Up to 3451 conditions per place. [2022-01-19 13:28:01,790 INFO L132 encePairwiseOnDemand]: 336/340 looper letters, 100 selfloop transitions, 16 changer transitions 3/513 dead transitions. [2022-01-19 13:28:01,790 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 513 transitions, 4787 flow [2022-01-19 13:28:01,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 13:28:01,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 13:28:01,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1238 transitions. [2022-01-19 13:28:01,791 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9102941176470588 [2022-01-19 13:28:01,791 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1238 transitions. [2022-01-19 13:28:01,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1238 transitions. [2022-01-19 13:28:01,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:28:01,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1238 transitions. [2022-01-19 13:28:01,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 309.5) internal successors, (1238), 4 states have internal predecessors, (1238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:01,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 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 13:28:01,793 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 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 13:28:01,793 INFO L186 Difference]: Start difference. First operand has 592 places, 507 transitions, 4576 flow. Second operand 4 states and 1238 transitions. [2022-01-19 13:28:01,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 595 places, 513 transitions, 4787 flow [2022-01-19 13:28:03,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 513 transitions, 4727 flow, removed 14 selfloop flow, removed 1 redundant places. [2022-01-19 13:28:03,109 INFO L242 Difference]: Finished difference. Result has 594 places, 502 transitions, 4422 flow [2022-01-19 13:28:03,109 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4422, PETRI_DIFFERENCE_MINUEND_PLACES=591, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4422, PETRI_PLACES=594, PETRI_TRANSITIONS=502} [2022-01-19 13:28:03,109 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 293 predicate places. [2022-01-19 13:28:03,110 INFO L470 AbstractCegarLoop]: Abstraction has has 594 places, 502 transitions, 4422 flow [2022-01-19 13:28:03,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:03,110 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:28:03,110 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:28:03,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-19 13:28:03,110 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 13:28:03,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:28:03,110 INFO L85 PathProgramCache]: Analyzing trace with hash 2038518433, now seen corresponding path program 9 times [2022-01-19 13:28:03,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:28:03,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881542982] [2022-01-19 13:28:03,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:28:03,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:28:03,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:28:03,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:28:03,147 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:28:03,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881542982] [2022-01-19 13:28:03,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881542982] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:28:03,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:28:03,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:28:03,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427152467] [2022-01-19 13:28:03,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:28:03,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:28:03,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:28:03,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:28:03,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:28:03,149 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:28:03,150 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 594 places, 502 transitions, 4422 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:03,150 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:28:03,150 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:28:03,150 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:28:08,905 INFO L129 PetriNetUnfolder]: 3242/29797 cut-off events. [2022-01-19 13:28:08,905 INFO L130 PetriNetUnfolder]: For 151888/153553 co-relation queries the response was YES. [2022-01-19 13:28:09,278 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83687 conditions, 29797 events. 3242/29797 cut-off events. For 151888/153553 co-relation queries the response was YES. Maximal size of possible extension queue 1030. Compared 460584 event pairs, 648 based on Foata normal form. 12/28195 useless extension candidates. Maximal degree in co-relation 83546. Up to 1828 conditions per place. [2022-01-19 13:28:09,325 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 83 selfloop transitions, 36 changer transitions 6/519 dead transitions. [2022-01-19 13:28:09,325 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 597 places, 519 transitions, 4769 flow [2022-01-19 13:28:09,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:28:09,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:28:09,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1552 transitions. [2022-01-19 13:28:09,326 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9129411764705883 [2022-01-19 13:28:09,326 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1552 transitions. [2022-01-19 13:28:09,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1552 transitions. [2022-01-19 13:28:09,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:28:09,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1552 transitions. [2022-01-19 13:28:09,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 310.4) internal successors, (1552), 5 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:09,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:09,328 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:09,328 INFO L186 Difference]: Start difference. First operand has 594 places, 502 transitions, 4422 flow. Second operand 5 states and 1552 transitions. [2022-01-19 13:28:09,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 597 places, 519 transitions, 4769 flow [2022-01-19 13:28:10,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 594 places, 519 transitions, 4712 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 13:28:10,669 INFO L242 Difference]: Finished difference. Result has 595 places, 502 transitions, 4435 flow [2022-01-19 13:28:10,669 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4335, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4435, PETRI_PLACES=595, PETRI_TRANSITIONS=502} [2022-01-19 13:28:10,669 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 294 predicate places. [2022-01-19 13:28:10,669 INFO L470 AbstractCegarLoop]: Abstraction has has 595 places, 502 transitions, 4435 flow [2022-01-19 13:28:10,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:10,670 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:28:10,670 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:28:10,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-19 13:28:10,670 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 13:28:10,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:28:10,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1899479315, now seen corresponding path program 5 times [2022-01-19 13:28:10,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:28:10,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133199876] [2022-01-19 13:28:10,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:28:10,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:28:10,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:28:10,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:28:10,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:28:10,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133199876] [2022-01-19 13:28:10,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133199876] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:28:10,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:28:10,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 13:28:10,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180574216] [2022-01-19 13:28:10,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:28:10,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 13:28:10,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:28:10,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 13:28:10,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 13:28:10,696 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:28:10,697 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 502 transitions, 4435 flow. Second operand has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:10,697 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:28:10,697 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:28:10,697 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:28:16,080 INFO L129 PetriNetUnfolder]: 3008/27402 cut-off events. [2022-01-19 13:28:16,080 INFO L130 PetriNetUnfolder]: For 144254/145546 co-relation queries the response was YES. [2022-01-19 13:28:16,419 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76263 conditions, 27402 events. 3008/27402 cut-off events. For 144254/145546 co-relation queries the response was YES. Maximal size of possible extension queue 978. Compared 419150 event pairs, 749 based on Foata normal form. 22/25635 useless extension candidates. Maximal degree in co-relation 76123. Up to 2381 conditions per place. [2022-01-19 13:28:16,465 INFO L132 encePairwiseOnDemand]: 336/340 looper letters, 97 selfloop transitions, 15 changer transitions 2/508 dead transitions. [2022-01-19 13:28:16,465 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 598 places, 508 transitions, 4655 flow [2022-01-19 13:28:16,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 13:28:16,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 13:28:16,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1237 transitions. [2022-01-19 13:28:16,466 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9095588235294118 [2022-01-19 13:28:16,466 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1237 transitions. [2022-01-19 13:28:16,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1237 transitions. [2022-01-19 13:28:16,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:28:16,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1237 transitions. [2022-01-19 13:28:16,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 309.25) internal successors, (1237), 4 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:16,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 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 13:28:16,468 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 340.0) internal successors, (1700), 5 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 13:28:16,468 INFO L186 Difference]: Start difference. First operand has 595 places, 502 transitions, 4435 flow. Second operand 4 states and 1237 transitions. [2022-01-19 13:28:16,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 598 places, 508 transitions, 4655 flow [2022-01-19 13:28:17,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 595 places, 508 transitions, 4577 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-01-19 13:28:17,619 INFO L242 Difference]: Finished difference. Result has 595 places, 499 transitions, 4299 flow [2022-01-19 13:28:17,619 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4303, PETRI_DIFFERENCE_MINUEND_PLACES=592, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=485, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=4299, PETRI_PLACES=595, PETRI_TRANSITIONS=499} [2022-01-19 13:28:17,620 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 294 predicate places. [2022-01-19 13:28:17,620 INFO L470 AbstractCegarLoop]: Abstraction has has 595 places, 499 transitions, 4299 flow [2022-01-19 13:28:17,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:17,620 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:28:17,620 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:28:17,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-19 13:28:17,620 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 13:28:17,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:28:17,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1979565471, now seen corresponding path program 8 times [2022-01-19 13:28:17,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:28:17,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681368770] [2022-01-19 13:28:17,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:28:17,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:28:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:28:17,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:28:17,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:28:17,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681368770] [2022-01-19 13:28:17,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681368770] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:28:17,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:28:17,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:28:17,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726436982] [2022-01-19 13:28:17,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:28:17,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:28:17,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:28:17,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:28:17,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:28:17,655 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:28:17,656 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 499 transitions, 4299 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:17,656 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:28:17,656 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:28:17,656 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:28:23,884 INFO L129 PetriNetUnfolder]: 3478/32113 cut-off events. [2022-01-19 13:28:23,884 INFO L130 PetriNetUnfolder]: For 148299/149789 co-relation queries the response was YES. [2022-01-19 13:28:24,266 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88772 conditions, 32113 events. 3478/32113 cut-off events. For 148299/149789 co-relation queries the response was YES. Maximal size of possible extension queue 1022. Compared 499736 event pairs, 539 based on Foata normal form. 13/30266 useless extension candidates. Maximal degree in co-relation 88633. Up to 1765 conditions per place. [2022-01-19 13:28:24,315 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 107 selfloop transitions, 26 changer transitions 3/530 dead transitions. [2022-01-19 13:28:24,315 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 599 places, 530 transitions, 4975 flow [2022-01-19 13:28:24,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:28:24,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:28:24,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1552 transitions. [2022-01-19 13:28:24,316 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9129411764705883 [2022-01-19 13:28:24,316 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1552 transitions. [2022-01-19 13:28:24,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1552 transitions. [2022-01-19 13:28:24,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:28:24,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1552 transitions. [2022-01-19 13:28:24,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 310.4) internal successors, (1552), 5 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:24,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:24,318 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:24,318 INFO L186 Difference]: Start difference. First operand has 595 places, 499 transitions, 4299 flow. Second operand 5 states and 1552 transitions. [2022-01-19 13:28:24,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 599 places, 530 transitions, 4975 flow [2022-01-19 13:28:25,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 597 places, 530 transitions, 4937 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 13:28:25,689 INFO L242 Difference]: Finished difference. Result has 600 places, 506 transitions, 4547 flow [2022-01-19 13:28:25,690 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4270, PETRI_DIFFERENCE_MINUEND_PLACES=593, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=473, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4547, PETRI_PLACES=600, PETRI_TRANSITIONS=506} [2022-01-19 13:28:25,690 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 299 predicate places. [2022-01-19 13:28:25,690 INFO L470 AbstractCegarLoop]: Abstraction has has 600 places, 506 transitions, 4547 flow [2022-01-19 13:28:25,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:25,690 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:28:25,690 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:28:25,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-19 13:28:25,691 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 13:28:25,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:28:25,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1455420565, now seen corresponding path program 9 times [2022-01-19 13:28:25,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:28:25,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245196024] [2022-01-19 13:28:25,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:28:25,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:28:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:28:25,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:28:25,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:28:25,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245196024] [2022-01-19 13:28:25,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245196024] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:28:25,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:28:25,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:28:25,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066497513] [2022-01-19 13:28:25,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:28:25,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:28:25,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:28:25,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:28:25,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:28:25,730 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:28:25,730 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 600 places, 506 transitions, 4547 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:25,730 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:28:25,730 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:28:25,731 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:28:31,517 INFO L129 PetriNetUnfolder]: 3273/29064 cut-off events. [2022-01-19 13:28:31,518 INFO L130 PetriNetUnfolder]: For 153490/155078 co-relation queries the response was YES. [2022-01-19 13:28:32,154 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85399 conditions, 29064 events. 3273/29064 cut-off events. For 153490/155078 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 445780 event pairs, 680 based on Foata normal form. 26/27457 useless extension candidates. Maximal degree in co-relation 85257. Up to 1556 conditions per place. [2022-01-19 13:28:32,381 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 89 selfloop transitions, 39 changer transitions 6/528 dead transitions. [2022-01-19 13:28:32,381 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 603 places, 528 transitions, 5002 flow [2022-01-19 13:28:32,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:28:32,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:28:32,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1556 transitions. [2022-01-19 13:28:32,383 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9152941176470588 [2022-01-19 13:28:32,383 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1556 transitions. [2022-01-19 13:28:32,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1556 transitions. [2022-01-19 13:28:32,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:28:32,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1556 transitions. [2022-01-19 13:28:32,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.2) internal successors, (1556), 5 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:32,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:32,385 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:32,385 INFO L186 Difference]: Start difference. First operand has 600 places, 506 transitions, 4547 flow. Second operand 5 states and 1556 transitions. [2022-01-19 13:28:32,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 603 places, 528 transitions, 5002 flow [2022-01-19 13:28:33,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 601 places, 528 transitions, 4995 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 13:28:33,726 INFO L242 Difference]: Finished difference. Result has 603 places, 508 transitions, 4688 flow [2022-01-19 13:28:33,727 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4512, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4688, PETRI_PLACES=603, PETRI_TRANSITIONS=508} [2022-01-19 13:28:33,727 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 302 predicate places. [2022-01-19 13:28:33,727 INFO L470 AbstractCegarLoop]: Abstraction has has 603 places, 508 transitions, 4688 flow [2022-01-19 13:28:33,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:33,727 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:28:33,727 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:28:33,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-19 13:28:33,728 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 13:28:33,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:28:33,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1105113117, now seen corresponding path program 10 times [2022-01-19 13:28:33,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:28:33,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429847229] [2022-01-19 13:28:33,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:28:33,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:28:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:28:33,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:28:33,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:28:33,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429847229] [2022-01-19 13:28:33,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429847229] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:28:33,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:28:33,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:28:33,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425611818] [2022-01-19 13:28:33,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:28:33,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:28:33,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:28:33,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:28:33,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:28:33,765 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:28:33,765 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 508 transitions, 4688 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:33,765 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:28:33,765 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:28:33,765 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:28:39,595 INFO L129 PetriNetUnfolder]: 3352/30036 cut-off events. [2022-01-19 13:28:39,595 INFO L130 PetriNetUnfolder]: For 170487/172179 co-relation queries the response was YES. [2022-01-19 13:28:39,966 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85275 conditions, 30036 events. 3352/30036 cut-off events. For 170487/172179 co-relation queries the response was YES. Maximal size of possible extension queue 1009. Compared 461862 event pairs, 715 based on Foata normal form. 35/28321 useless extension candidates. Maximal degree in co-relation 85132. Up to 1672 conditions per place. [2022-01-19 13:28:40,025 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 98 selfloop transitions, 29 changer transitions 8/529 dead transitions. [2022-01-19 13:28:40,026 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 529 transitions, 5163 flow [2022-01-19 13:28:40,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:28:40,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:28:40,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1552 transitions. [2022-01-19 13:28:40,027 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9129411764705883 [2022-01-19 13:28:40,027 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1552 transitions. [2022-01-19 13:28:40,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1552 transitions. [2022-01-19 13:28:40,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:28:40,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1552 transitions. [2022-01-19 13:28:40,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 310.4) internal successors, (1552), 5 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:40,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:40,029 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:40,029 INFO L186 Difference]: Start difference. First operand has 603 places, 508 transitions, 4688 flow. Second operand 5 states and 1552 transitions. [2022-01-19 13:28:40,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 529 transitions, 5163 flow [2022-01-19 13:28:41,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 607 places, 529 transitions, 5155 flow, removed 4 selfloop flow, removed 0 redundant places. [2022-01-19 13:28:41,473 INFO L242 Difference]: Finished difference. Result has 608 places, 505 transitions, 4679 flow [2022-01-19 13:28:41,473 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4656, PETRI_DIFFERENCE_MINUEND_PLACES=603, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4679, PETRI_PLACES=608, PETRI_TRANSITIONS=505} [2022-01-19 13:28:41,473 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 307 predicate places. [2022-01-19 13:28:41,474 INFO L470 AbstractCegarLoop]: Abstraction has has 608 places, 505 transitions, 4679 flow [2022-01-19 13:28:41,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:41,474 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:28:41,474 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:28:41,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-19 13:28:41,474 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 13:28:41,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:28:41,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1577870249, now seen corresponding path program 10 times [2022-01-19 13:28:41,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:28:41,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25627282] [2022-01-19 13:28:41,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:28:41,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:28:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:28:41,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:28:41,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:28:41,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25627282] [2022-01-19 13:28:41,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25627282] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:28:41,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:28:41,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:28:41,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356064000] [2022-01-19 13:28:41,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:28:41,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:28:41,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:28:41,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:28:41,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:28:41,508 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:28:41,509 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 608 places, 505 transitions, 4679 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:41,509 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:28:41,509 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:28:41,509 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:28:47,505 INFO L129 PetriNetUnfolder]: 3343/29876 cut-off events. [2022-01-19 13:28:47,505 INFO L130 PetriNetUnfolder]: For 166877/168461 co-relation queries the response was YES. [2022-01-19 13:28:48,063 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85605 conditions, 29876 events. 3343/29876 cut-off events. For 166877/168461 co-relation queries the response was YES. Maximal size of possible extension queue 949. Compared 458164 event pairs, 487 based on Foata normal form. 21/28194 useless extension candidates. Maximal degree in co-relation 85460. Up to 1562 conditions per place. [2022-01-19 13:28:48,110 INFO L132 encePairwiseOnDemand]: 334/340 looper letters, 95 selfloop transitions, 29 changer transitions 2/520 dead transitions. [2022-01-19 13:28:48,110 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 611 places, 520 transitions, 5056 flow [2022-01-19 13:28:48,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:28:48,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:28:48,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1547 transitions. [2022-01-19 13:28:48,112 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.91 [2022-01-19 13:28:48,112 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1547 transitions. [2022-01-19 13:28:48,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1547 transitions. [2022-01-19 13:28:48,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:28:48,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1547 transitions. [2022-01-19 13:28:48,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 309.4) internal successors, (1547), 5 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:48,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:48,114 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:48,114 INFO L186 Difference]: Start difference. First operand has 608 places, 505 transitions, 4679 flow. Second operand 5 states and 1547 transitions. [2022-01-19 13:28:48,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 611 places, 520 transitions, 5056 flow [2022-01-19 13:28:49,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 609 places, 520 transitions, 5014 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-01-19 13:28:49,473 INFO L242 Difference]: Finished difference. Result has 609 places, 504 transitions, 4677 flow [2022-01-19 13:28:49,474 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4619, PETRI_DIFFERENCE_MINUEND_PLACES=605, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=475, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4677, PETRI_PLACES=609, PETRI_TRANSITIONS=504} [2022-01-19 13:28:49,474 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 308 predicate places. [2022-01-19 13:28:49,474 INFO L470 AbstractCegarLoop]: Abstraction has has 609 places, 504 transitions, 4677 flow [2022-01-19 13:28:49,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:49,474 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:28:49,474 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:28:49,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-19 13:28:49,475 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 13:28:49,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:28:49,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1720319565, now seen corresponding path program 11 times [2022-01-19 13:28:49,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:28:49,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839931312] [2022-01-19 13:28:49,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:28:49,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:28:49,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:28:49,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:28:49,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:28:49,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839931312] [2022-01-19 13:28:49,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839931312] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:28:49,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:28:49,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:28:49,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781508062] [2022-01-19 13:28:49,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:28:49,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:28:49,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:28:49,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:28:49,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:28:49,508 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:28:49,508 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 609 places, 504 transitions, 4677 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:49,508 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:28:49,508 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:28:49,508 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:28:55,436 INFO L129 PetriNetUnfolder]: 3329/29216 cut-off events. [2022-01-19 13:28:55,436 INFO L130 PetriNetUnfolder]: For 165534/167106 co-relation queries the response was YES. [2022-01-19 13:28:56,034 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84968 conditions, 29216 events. 3329/29216 cut-off events. For 165534/167106 co-relation queries the response was YES. Maximal size of possible extension queue 937. Compared 445568 event pairs, 438 based on Foata normal form. 21/27568 useless extension candidates. Maximal degree in co-relation 84823. Up to 1847 conditions per place. [2022-01-19 13:28:56,085 INFO L132 encePairwiseOnDemand]: 336/340 looper letters, 110 selfloop transitions, 13 changer transitions 7/524 dead transitions. [2022-01-19 13:28:56,086 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 524 transitions, 5088 flow [2022-01-19 13:28:56,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:28:56,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:28:56,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1549 transitions. [2022-01-19 13:28:56,087 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9111764705882353 [2022-01-19 13:28:56,087 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1549 transitions. [2022-01-19 13:28:56,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1549 transitions. [2022-01-19 13:28:56,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:28:56,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1549 transitions. [2022-01-19 13:28:56,088 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 309.8) internal successors, (1549), 5 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:56,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:56,089 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:56,089 INFO L186 Difference]: Start difference. First operand has 609 places, 504 transitions, 4677 flow. Second operand 5 states and 1549 transitions. [2022-01-19 13:28:56,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 524 transitions, 5088 flow [2022-01-19 13:28:57,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 524 transitions, 5055 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-01-19 13:28:57,644 INFO L242 Difference]: Finished difference. Result has 611 places, 502 transitions, 4612 flow [2022-01-19 13:28:57,644 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4618, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4612, PETRI_PLACES=611, PETRI_TRANSITIONS=502} [2022-01-19 13:28:57,644 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 310 predicate places. [2022-01-19 13:28:57,644 INFO L470 AbstractCegarLoop]: Abstraction has has 611 places, 502 transitions, 4612 flow [2022-01-19 13:28:57,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:57,645 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:28:57,645 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:28:57,645 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-19 13:28:57,645 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 13:28:57,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:28:57,645 INFO L85 PathProgramCache]: Analyzing trace with hash 814846189, now seen corresponding path program 12 times [2022-01-19 13:28:57,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:28:57,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451589288] [2022-01-19 13:28:57,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:28:57,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:28:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:28:57,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:28:57,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:28:57,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451589288] [2022-01-19 13:28:57,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451589288] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:28:57,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:28:57,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:28:57,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41613727] [2022-01-19 13:28:57,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:28:57,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:28:57,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:28:57,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:28:57,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:28:57,675 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:28:57,676 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 502 transitions, 4612 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:28:57,676 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:28:57,676 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:28:57,676 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:29:03,180 INFO L129 PetriNetUnfolder]: 3241/27729 cut-off events. [2022-01-19 13:29:03,180 INFO L130 PetriNetUnfolder]: For 161831/163777 co-relation queries the response was YES. [2022-01-19 13:29:03,796 INFO L84 FinitePrefix]: Finished finitePrefix Result has 82361 conditions, 27729 events. 3241/27729 cut-off events. For 161831/163777 co-relation queries the response was YES. Maximal size of possible extension queue 901. Compared 418575 event pairs, 460 based on Foata normal form. 32/26170 useless extension candidates. Maximal degree in co-relation 82216. Up to 1847 conditions per place. [2022-01-19 13:29:03,839 INFO L132 encePairwiseOnDemand]: 336/340 looper letters, 105 selfloop transitions, 11 changer transitions 12/522 dead transitions. [2022-01-19 13:29:03,839 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 522 transitions, 5018 flow [2022-01-19 13:29:03,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:29:03,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:29:03,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1549 transitions. [2022-01-19 13:29:03,841 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9111764705882353 [2022-01-19 13:29:03,841 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1549 transitions. [2022-01-19 13:29:03,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1549 transitions. [2022-01-19 13:29:03,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:29:03,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1549 transitions. [2022-01-19 13:29:03,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 309.8) internal successors, (1549), 5 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:29:03,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:29:03,843 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:29:03,843 INFO L186 Difference]: Start difference. First operand has 611 places, 502 transitions, 4612 flow. Second operand 5 states and 1549 transitions. [2022-01-19 13:29:03,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 522 transitions, 5018 flow [2022-01-19 13:29:05,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 522 transitions, 4978 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-01-19 13:29:05,052 INFO L242 Difference]: Finished difference. Result has 611 places, 498 transitions, 4489 flow [2022-01-19 13:29:05,052 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4535, PETRI_DIFFERENCE_MINUEND_PLACES=607, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4489, PETRI_PLACES=611, PETRI_TRANSITIONS=498} [2022-01-19 13:29:05,052 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 310 predicate places. [2022-01-19 13:29:05,052 INFO L470 AbstractCegarLoop]: Abstraction has has 611 places, 498 transitions, 4489 flow [2022-01-19 13:29:05,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:29:05,053 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:29:05,053 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:29:05,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-19 13:29:05,053 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 13:29:05,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:29:05,053 INFO L85 PathProgramCache]: Analyzing trace with hash 177107899, now seen corresponding path program 11 times [2022-01-19 13:29:05,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:29:05,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251162282] [2022-01-19 13:29:05,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:29:05,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:29:05,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:29:05,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:29:05,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:29:05,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251162282] [2022-01-19 13:29:05,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251162282] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:29:05,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:29:05,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:29:05,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408458091] [2022-01-19 13:29:05,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:29:05,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:29:05,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:29:05,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:29:05,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:29:05,113 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:29:05,114 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 498 transitions, 4489 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:29:05,114 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:29:05,114 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:29:05,114 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:29:10,084 INFO L129 PetriNetUnfolder]: 2881/23373 cut-off events. [2022-01-19 13:29:10,084 INFO L130 PetriNetUnfolder]: For 149834/151082 co-relation queries the response was YES. [2022-01-19 13:29:10,663 INFO L84 FinitePrefix]: Finished finitePrefix Result has 73267 conditions, 23373 events. 2881/23373 cut-off events. For 149834/151082 co-relation queries the response was YES. Maximal size of possible extension queue 862. Compared 343296 event pairs, 641 based on Foata normal form. 33/22000 useless extension candidates. Maximal degree in co-relation 73123. Up to 1314 conditions per place. [2022-01-19 13:29:10,708 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 77 selfloop transitions, 38 changer transitions 5/514 dead transitions. [2022-01-19 13:29:10,708 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 514 transitions, 4805 flow [2022-01-19 13:29:10,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:29:10,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:29:10,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1557 transitions. [2022-01-19 13:29:10,709 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9158823529411765 [2022-01-19 13:29:10,709 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1557 transitions. [2022-01-19 13:29:10,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1557 transitions. [2022-01-19 13:29:10,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:29:10,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1557 transitions. [2022-01-19 13:29:10,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.4) internal successors, (1557), 5 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:29:10,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:29:10,711 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:29:10,711 INFO L186 Difference]: Start difference. First operand has 611 places, 498 transitions, 4489 flow. Second operand 5 states and 1557 transitions. [2022-01-19 13:29:10,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 514 transitions, 4805 flow [2022-01-19 13:29:11,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 514 transitions, 4745 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-01-19 13:29:11,905 INFO L242 Difference]: Finished difference. Result has 610 places, 497 transitions, 4485 flow [2022-01-19 13:29:11,905 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4409, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=497, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=459, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4485, PETRI_PLACES=610, PETRI_TRANSITIONS=497} [2022-01-19 13:29:11,906 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 309 predicate places. [2022-01-19 13:29:11,906 INFO L470 AbstractCegarLoop]: Abstraction has has 610 places, 497 transitions, 4485 flow [2022-01-19 13:29:11,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:29:11,906 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:29:11,906 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:29:11,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-19 13:29:11,906 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 13:29:11,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:29:11,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1213810355, now seen corresponding path program 12 times [2022-01-19 13:29:11,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:29:11,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562469938] [2022-01-19 13:29:11,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:29:11,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:29:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:29:11,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:29:11,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:29:11,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562469938] [2022-01-19 13:29:11,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562469938] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:29:11,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:29:11,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 13:29:11,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522788606] [2022-01-19 13:29:11,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:29:11,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 13:29:11,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:29:11,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 13:29:11,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-19 13:29:11,943 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 340 [2022-01-19 13:29:11,943 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 610 places, 497 transitions, 4485 flow. Second operand has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:29:11,943 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:29:11,943 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 340 [2022-01-19 13:29:11,943 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:29:17,180 INFO L129 PetriNetUnfolder]: 3078/25517 cut-off events. [2022-01-19 13:29:17,180 INFO L130 PetriNetUnfolder]: For 146429/147659 co-relation queries the response was YES. [2022-01-19 13:29:17,894 INFO L84 FinitePrefix]: Finished finitePrefix Result has 76444 conditions, 25517 events. 3078/25517 cut-off events. For 146429/147659 co-relation queries the response was YES. Maximal size of possible extension queue 856. Compared 379569 event pairs, 595 based on Foata normal form. 26/23913 useless extension candidates. Maximal degree in co-relation 76302. Up to 1428 conditions per place. [2022-01-19 13:29:17,934 INFO L132 encePairwiseOnDemand]: 333/340 looper letters, 71 selfloop transitions, 41 changer transitions 5/511 dead transitions. [2022-01-19 13:29:17,935 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 614 places, 511 transitions, 4785 flow [2022-01-19 13:29:17,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 13:29:17,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 13:29:17,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1557 transitions. [2022-01-19 13:29:17,936 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9158823529411765 [2022-01-19 13:29:17,936 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1557 transitions. [2022-01-19 13:29:17,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1557 transitions. [2022-01-19 13:29:17,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:29:17,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1557 transitions. [2022-01-19 13:29:17,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 311.4) internal successors, (1557), 5 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:29:17,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:29:17,938 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 340.0) internal successors, (2040), 6 states have internal predecessors, (2040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:29:17,938 INFO L186 Difference]: Start difference. First operand has 610 places, 497 transitions, 4485 flow. Second operand 5 states and 1557 transitions. [2022-01-19 13:29:17,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 614 places, 511 transitions, 4785 flow [2022-01-19 13:29:19,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 511 transitions, 4694 flow, removed 3 selfloop flow, removed 4 redundant places. [2022-01-19 13:29:19,086 INFO L242 Difference]: Finished difference. Result has 610 places, 496 transitions, 4452 flow [2022-01-19 13:29:19,086 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4370, PETRI_DIFFERENCE_MINUEND_PLACES=606, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4452, PETRI_PLACES=610, PETRI_TRANSITIONS=496} [2022-01-19 13:29:19,086 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 309 predicate places. [2022-01-19 13:29:19,087 INFO L470 AbstractCegarLoop]: Abstraction has has 610 places, 496 transitions, 4452 flow [2022-01-19 13:29:19,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 304.2) internal successors, (1521), 5 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:29:19,087 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:29:19,087 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:29:19,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-19 13:29:19,087 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 13:29:19,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:29:19,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1660460544, now seen corresponding path program 1 times [2022-01-19 13:29:19,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:29:19,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670260203] [2022-01-19 13:29:19,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:29:19,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:29:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:29:19,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:29:19,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:29:19,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670260203] [2022-01-19 13:29:19,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670260203] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 13:29:19,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282543016] [2022-01-19 13:29:19,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:29:19,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:29:19,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:29:19,282 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 13:29:19,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-19 13:29:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:29:19,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-19 13:29:19,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 13:29:20,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:29:20,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 13:29:21,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:29:21,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282543016] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 13:29:21,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 13:29:21,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [19, 18] total 36 [2022-01-19 13:29:21,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703765965] [2022-01-19 13:29:21,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:29:21,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 13:29:21,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:29:21,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 13:29:21,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1086, Unknown=0, NotChecked=0, Total=1260 [2022-01-19 13:29:21,530 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 340 [2022-01-19 13:29:21,532 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 610 places, 496 transitions, 4452 flow. Second operand has 18 states, 18 states have (on average 232.11111111111111) internal successors, (4178), 18 states have internal predecessors, (4178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:29:21,532 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:29:21,532 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 340 [2022-01-19 13:29:21,532 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:29:34,128 INFO L129 PetriNetUnfolder]: 11636/59666 cut-off events. [2022-01-19 13:29:34,128 INFO L130 PetriNetUnfolder]: For 117805/123458 co-relation queries the response was YES. [2022-01-19 13:29:36,022 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120920 conditions, 59666 events. 11636/59666 cut-off events. For 117805/123458 co-relation queries the response was YES. Maximal size of possible extension queue 2474. Compared 974412 event pairs, 5754 based on Foata normal form. 685/52948 useless extension candidates. Maximal degree in co-relation 120780. Up to 6986 conditions per place. [2022-01-19 13:29:36,118 INFO L132 encePairwiseOnDemand]: 312/340 looper letters, 313 selfloop transitions, 44 changer transitions 29/722 dead transitions. [2022-01-19 13:29:36,119 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 639 places, 722 transitions, 6447 flow [2022-01-19 13:29:36,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:29:36,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:29:36,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7104 transitions. [2022-01-19 13:29:36,122 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6964705882352941 [2022-01-19 13:29:36,123 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7104 transitions. [2022-01-19 13:29:36,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7104 transitions. [2022-01-19 13:29:36,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:29:36,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7104 transitions. [2022-01-19 13:29:36,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 236.8) internal successors, (7104), 30 states have internal predecessors, (7104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:29:36,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 340.0) internal successors, (10540), 31 states have internal predecessors, (10540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:29:36,134 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 340.0) internal successors, (10540), 31 states have internal predecessors, (10540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:29:36,134 INFO L186 Difference]: Start difference. First operand has 610 places, 496 transitions, 4452 flow. Second operand 30 states and 7104 transitions. [2022-01-19 13:29:36,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 639 places, 722 transitions, 6447 flow [2022-01-19 13:29:36,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 637 places, 722 transitions, 6385 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-01-19 13:29:36,711 INFO L242 Difference]: Finished difference. Result has 642 places, 501 transitions, 4459 flow [2022-01-19 13:29:36,711 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4390, PETRI_DIFFERENCE_MINUEND_PLACES=608, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=496, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=460, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4459, PETRI_PLACES=642, PETRI_TRANSITIONS=501} [2022-01-19 13:29:36,712 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 341 predicate places. [2022-01-19 13:29:36,712 INFO L470 AbstractCegarLoop]: Abstraction has has 642 places, 501 transitions, 4459 flow [2022-01-19 13:29:36,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 232.11111111111111) internal successors, (4178), 18 states have internal predecessors, (4178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:29:36,712 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:29:36,712 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:29:36,731 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-19 13:29:36,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-01-19 13:29:36,913 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 13:29:36,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:29:36,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1778909278, now seen corresponding path program 2 times [2022-01-19 13:29:36,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:29:36,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828113269] [2022-01-19 13:29:36,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:29:36,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:29:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:29:37,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:29:37,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:29:37,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828113269] [2022-01-19 13:29:37,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828113269] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 13:29:37,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380934684] [2022-01-19 13:29:37,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 13:29:37,123 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:29:37,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:29:37,124 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 13:29:37,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-19 13:29:37,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-19 13:29:37,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 13:29:37,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-19 13:29:37,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 13:29:38,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:29:38,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 13:29:38,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380934684] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:29:38,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 13:29:38,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [19] total 32 [2022-01-19 13:29:38,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240676740] [2022-01-19 13:29:38,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:29:38,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-19 13:29:38,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:29:38,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-19 13:29:38,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=902, Unknown=0, NotChecked=0, Total=992 [2022-01-19 13:29:38,334 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 340 [2022-01-19 13:29:38,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 642 places, 501 transitions, 4459 flow. Second operand has 23 states, 23 states have (on average 228.2608695652174) internal successors, (5250), 23 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:29:38,335 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:29:38,336 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 340 [2022-01-19 13:29:38,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:29:51,660 INFO L129 PetriNetUnfolder]: 12474/60626 cut-off events. [2022-01-19 13:29:51,661 INFO L130 PetriNetUnfolder]: For 124828/131007 co-relation queries the response was YES. [2022-01-19 13:29:53,346 INFO L84 FinitePrefix]: Finished finitePrefix Result has 127644 conditions, 60626 events. 12474/60626 cut-off events. For 124828/131007 co-relation queries the response was YES. Maximal size of possible extension queue 2641. Compared 984196 event pairs, 6342 based on Foata normal form. 585/53622 useless extension candidates. Maximal degree in co-relation 127500. Up to 7512 conditions per place. [2022-01-19 13:29:53,449 INFO L132 encePairwiseOnDemand]: 306/340 looper letters, 284 selfloop transitions, 46 changer transitions 14/678 dead transitions. [2022-01-19 13:29:53,449 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 678 transitions, 6080 flow [2022-01-19 13:29:53,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 13:29:53,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 13:29:53,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 8132 transitions. [2022-01-19 13:29:53,452 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6833613445378152 [2022-01-19 13:29:53,452 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 8132 transitions. [2022-01-19 13:29:53,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 8132 transitions. [2022-01-19 13:29:53,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:29:53,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 8132 transitions. [2022-01-19 13:29:53,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 232.34285714285716) internal successors, (8132), 35 states have internal predecessors, (8132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:29:53,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 340.0) internal successors, (12240), 36 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:29:53,462 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 340.0) internal successors, (12240), 36 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:29:53,463 INFO L186 Difference]: Start difference. First operand has 642 places, 501 transitions, 4459 flow. Second operand 35 states and 8132 transitions. [2022-01-19 13:29:53,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 678 transitions, 6080 flow [2022-01-19 13:29:54,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 650 places, 678 transitions, 5974 flow, removed 38 selfloop flow, removed 18 redundant places. [2022-01-19 13:29:54,239 INFO L242 Difference]: Finished difference. Result has 658 places, 521 transitions, 4608 flow [2022-01-19 13:29:54,239 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4399, PETRI_DIFFERENCE_MINUEND_PLACES=616, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=463, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4608, PETRI_PLACES=658, PETRI_TRANSITIONS=521} [2022-01-19 13:29:54,239 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 357 predicate places. [2022-01-19 13:29:54,240 INFO L470 AbstractCegarLoop]: Abstraction has has 658 places, 521 transitions, 4608 flow [2022-01-19 13:29:54,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 228.2608695652174) internal successors, (5250), 23 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:29:54,240 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:29:54,240 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:29:54,256 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-19 13:29:54,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable59 [2022-01-19 13:29:54,444 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 13:29:54,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:29:54,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1880461646, now seen corresponding path program 3 times [2022-01-19 13:29:54,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:29:54,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518046767] [2022-01-19 13:29:54,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:29:54,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:29:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:29:54,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:29:54,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:29:54,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518046767] [2022-01-19 13:29:54,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518046767] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 13:29:54,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141043655] [2022-01-19 13:29:54,644 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 13:29:54,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:29:54,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:29:54,653 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 13:29:54,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-19 13:29:54,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-01-19 13:29:54,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 13:29:54,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-19 13:29:54,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 13:29:55,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:29:55,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 13:29:55,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141043655] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:29:55,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 13:29:55,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [19] total 32 [2022-01-19 13:29:55,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630395456] [2022-01-19 13:29:55,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:29:55,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-19 13:29:55,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:29:55,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-19 13:29:55,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=902, Unknown=0, NotChecked=0, Total=992 [2022-01-19 13:29:55,631 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 340 [2022-01-19 13:29:55,632 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 658 places, 521 transitions, 4608 flow. Second operand has 23 states, 23 states have (on average 228.2608695652174) internal successors, (5250), 23 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:29:55,632 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:29:55,632 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 340 [2022-01-19 13:29:55,632 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:30:09,158 INFO L129 PetriNetUnfolder]: 12536/61177 cut-off events. [2022-01-19 13:30:09,158 INFO L130 PetriNetUnfolder]: For 134667/141278 co-relation queries the response was YES. [2022-01-19 13:30:11,000 INFO L84 FinitePrefix]: Finished finitePrefix Result has 131110 conditions, 61177 events. 12536/61177 cut-off events. For 134667/141278 co-relation queries the response was YES. Maximal size of possible extension queue 2613. Compared 994972 event pairs, 5605 based on Foata normal form. 622/54216 useless extension candidates. Maximal degree in co-relation 130963. Up to 7512 conditions per place. [2022-01-19 13:30:11,105 INFO L132 encePairwiseOnDemand]: 306/340 looper letters, 292 selfloop transitions, 53 changer transitions 36/715 dead transitions. [2022-01-19 13:30:11,105 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 684 places, 715 transitions, 6571 flow [2022-01-19 13:30:11,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-19 13:30:11,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-01-19 13:30:11,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 8135 transitions. [2022-01-19 13:30:11,109 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6836134453781513 [2022-01-19 13:30:11,109 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 8135 transitions. [2022-01-19 13:30:11,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 8135 transitions. [2022-01-19 13:30:11,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:30:11,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 8135 transitions. [2022-01-19 13:30:11,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 232.42857142857142) internal successors, (8135), 35 states have internal predecessors, (8135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:30:11,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 340.0) internal successors, (12240), 36 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:30:11,119 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 340.0) internal successors, (12240), 36 states have internal predecessors, (12240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:30:11,119 INFO L186 Difference]: Start difference. First operand has 658 places, 521 transitions, 4608 flow. Second operand 35 states and 8135 transitions. [2022-01-19 13:30:11,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 684 places, 715 transitions, 6571 flow [2022-01-19 13:30:11,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 662 places, 715 transitions, 6483 flow, removed 23 selfloop flow, removed 22 redundant places. [2022-01-19 13:30:11,895 INFO L242 Difference]: Finished difference. Result has 669 places, 531 transitions, 4777 flow [2022-01-19 13:30:11,895 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4558, PETRI_DIFFERENCE_MINUEND_PLACES=628, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=476, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4777, PETRI_PLACES=669, PETRI_TRANSITIONS=531} [2022-01-19 13:30:11,895 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 368 predicate places. [2022-01-19 13:30:11,895 INFO L470 AbstractCegarLoop]: Abstraction has has 669 places, 531 transitions, 4777 flow [2022-01-19 13:30:11,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 228.2608695652174) internal successors, (5250), 23 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:30:11,896 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:30:11,896 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:30:11,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-19 13:30:12,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:30:12,097 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 13:30:12,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:30:12,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1627662569, now seen corresponding path program 1 times [2022-01-19 13:30:12,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:30:12,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151154735] [2022-01-19 13:30:12,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:30:12,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:30:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:30:12,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:30:12,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:30:12,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151154735] [2022-01-19 13:30:12,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151154735] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 13:30:12,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958215158] [2022-01-19 13:30:12,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:30:12,204 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:30:12,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:30:12,207 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 13:30:12,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-19 13:30:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:30:12,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-19 13:30:12,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 13:30:12,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:30:12,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 13:30:13,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:30:13,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958215158] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 13:30:13,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 13:30:13,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14, 13] total 26 [2022-01-19 13:30:13,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260730076] [2022-01-19 13:30:13,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:30:13,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-19 13:30:13,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:30:13,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-19 13:30:13,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:30:13,142 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 340 [2022-01-19 13:30:13,143 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 669 places, 531 transitions, 4777 flow. Second operand has 13 states, 13 states have (on average 238.46153846153845) internal successors, (3100), 13 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 13:30:13,143 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:30:13,143 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 340 [2022-01-19 13:30:13,143 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:30:22,137 INFO L129 PetriNetUnfolder]: 6980/41541 cut-off events. [2022-01-19 13:30:22,137 INFO L130 PetriNetUnfolder]: For 89591/93094 co-relation queries the response was YES. [2022-01-19 13:30:22,961 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88920 conditions, 41541 events. 6980/41541 cut-off events. For 89591/93094 co-relation queries the response was YES. Maximal size of possible extension queue 1533. Compared 653929 event pairs, 2867 based on Foata normal form. 139/36727 useless extension candidates. Maximal degree in co-relation 88769. Up to 5289 conditions per place. [2022-01-19 13:30:23,041 INFO L132 encePairwiseOnDemand]: 316/340 looper letters, 205 selfloop transitions, 30 changer transitions 4/605 dead transitions. [2022-01-19 13:30:23,041 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 680 places, 605 transitions, 5524 flow [2022-01-19 13:30:23,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 13:30:23,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-01-19 13:30:23,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 4864 transitions. [2022-01-19 13:30:23,043 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7152941176470589 [2022-01-19 13:30:23,043 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 4864 transitions. [2022-01-19 13:30:23,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 4864 transitions. [2022-01-19 13:30:23,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:30:23,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 4864 transitions. [2022-01-19 13:30:23,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 243.2) internal successors, (4864), 20 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:30:23,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 340.0) internal successors, (7140), 21 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:30:23,049 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 340.0) internal successors, (7140), 21 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:30:23,049 INFO L186 Difference]: Start difference. First operand has 669 places, 531 transitions, 4777 flow. Second operand 20 states and 4864 transitions. [2022-01-19 13:30:23,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 680 places, 605 transitions, 5524 flow [2022-01-19 13:30:23,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 656 places, 605 transitions, 5449 flow, removed 13 selfloop flow, removed 24 redundant places. [2022-01-19 13:30:23,552 INFO L242 Difference]: Finished difference. Result has 660 places, 532 transitions, 4803 flow [2022-01-19 13:30:23,553 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4720, PETRI_DIFFERENCE_MINUEND_PLACES=637, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4803, PETRI_PLACES=660, PETRI_TRANSITIONS=532} [2022-01-19 13:30:23,553 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 359 predicate places. [2022-01-19 13:30:23,553 INFO L470 AbstractCegarLoop]: Abstraction has has 660 places, 532 transitions, 4803 flow [2022-01-19 13:30:23,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 238.46153846153845) internal successors, (3100), 13 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 13:30:23,553 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:30:23,554 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:30:23,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-19 13:30:23,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:30:23,769 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 13:30:23,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:30:23,770 INFO L85 PathProgramCache]: Analyzing trace with hash 496985548, now seen corresponding path program 4 times [2022-01-19 13:30:23,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:30:23,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006977638] [2022-01-19 13:30:23,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:30:23,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:30:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:30:23,950 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:30:23,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:30:23,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006977638] [2022-01-19 13:30:23,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006977638] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 13:30:23,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535649924] [2022-01-19 13:30:23,950 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 13:30:23,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:30:23,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:30:23,952 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 13:30:23,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-19 13:30:24,071 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 13:30:24,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 13:30:24,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-19 13:30:24,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 13:30:24,701 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:30:24,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 13:30:25,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:30:25,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535649924] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 13:30:25,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 13:30:25,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [19, 18] total 36 [2022-01-19 13:30:25,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016116981] [2022-01-19 13:30:25,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:30:26,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 13:30:26,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:30:26,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 13:30:26,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1082, Unknown=0, NotChecked=0, Total=1260 [2022-01-19 13:30:26,014 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 340 [2022-01-19 13:30:26,015 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 660 places, 532 transitions, 4803 flow. Second operand has 18 states, 18 states have (on average 232.11111111111111) internal successors, (4178), 18 states have internal predecessors, (4178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:30:26,015 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:30:26,015 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 340 [2022-01-19 13:30:26,015 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:30:40,165 INFO L129 PetriNetUnfolder]: 11831/61666 cut-off events. [2022-01-19 13:30:40,165 INFO L130 PetriNetUnfolder]: For 154490/161167 co-relation queries the response was YES. [2022-01-19 13:30:42,068 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135321 conditions, 61666 events. 11831/61666 cut-off events. For 154490/161167 co-relation queries the response was YES. Maximal size of possible extension queue 2407. Compared 1014584 event pairs, 6509 based on Foata normal form. 580/54663 useless extension candidates. Maximal degree in co-relation 135170. Up to 7434 conditions per place. [2022-01-19 13:30:42,185 INFO L132 encePairwiseOnDemand]: 312/340 looper letters, 340 selfloop transitions, 46 changer transitions 18/740 dead transitions. [2022-01-19 13:30:42,186 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 687 places, 740 transitions, 6947 flow [2022-01-19 13:30:42,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:30:42,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:30:42,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 7103 transitions. [2022-01-19 13:30:42,189 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6963725490196079 [2022-01-19 13:30:42,189 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 7103 transitions. [2022-01-19 13:30:42,189 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 7103 transitions. [2022-01-19 13:30:42,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:30:42,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 7103 transitions. [2022-01-19 13:30:42,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 236.76666666666668) internal successors, (7103), 30 states have internal predecessors, (7103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:30:42,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 340.0) internal successors, (10540), 31 states have internal predecessors, (10540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:30:42,198 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 340.0) internal successors, (10540), 31 states have internal predecessors, (10540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:30:42,198 INFO L186 Difference]: Start difference. First operand has 660 places, 532 transitions, 4803 flow. Second operand 30 states and 7103 transitions. [2022-01-19 13:30:42,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 687 places, 740 transitions, 6947 flow [2022-01-19 13:30:43,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 673 places, 740 transitions, 6880 flow, removed 11 selfloop flow, removed 14 redundant places. [2022-01-19 13:30:43,330 INFO L242 Difference]: Finished difference. Result has 677 places, 533 transitions, 4863 flow [2022-01-19 13:30:43,330 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4746, PETRI_DIFFERENCE_MINUEND_PLACES=644, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=532, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4863, PETRI_PLACES=677, PETRI_TRANSITIONS=533} [2022-01-19 13:30:43,330 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 376 predicate places. [2022-01-19 13:30:43,330 INFO L470 AbstractCegarLoop]: Abstraction has has 677 places, 533 transitions, 4863 flow [2022-01-19 13:30:43,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 232.11111111111111) internal successors, (4178), 18 states have internal predecessors, (4178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:30:43,331 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:30:43,331 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:30:43,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-19 13:30:43,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:30:43,540 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 13:30:43,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:30:43,540 INFO L85 PathProgramCache]: Analyzing trace with hash -551412746, now seen corresponding path program 1 times [2022-01-19 13:30:43,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:30:43,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841973159] [2022-01-19 13:30:43,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:30:43,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:30:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:30:43,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:30:43,644 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:30:43,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841973159] [2022-01-19 13:30:43,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841973159] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 13:30:43,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032224389] [2022-01-19 13:30:43,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:30:43,645 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:30:43,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:30:43,646 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 13:30:43,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-19 13:30:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:30:43,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 14 conjunts are in the unsatisfiable core [2022-01-19 13:30:43,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 13:30:44,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:30:44,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 13:30:44,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:30:44,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032224389] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 13:30:44,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 13:30:44,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [14, 13] total 26 [2022-01-19 13:30:44,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780389205] [2022-01-19 13:30:44,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:30:44,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-19 13:30:44,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:30:44,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-19 13:30:44,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=548, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:30:44,632 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 233 out of 340 [2022-01-19 13:30:44,633 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 677 places, 533 transitions, 4863 flow. Second operand has 13 states, 13 states have (on average 238.46153846153845) internal successors, (3100), 13 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 13:30:44,633 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:30:44,633 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 233 of 340 [2022-01-19 13:30:44,633 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:30:55,650 INFO L129 PetriNetUnfolder]: 8459/50435 cut-off events. [2022-01-19 13:30:55,651 INFO L130 PetriNetUnfolder]: For 108250/112469 co-relation queries the response was YES. [2022-01-19 13:30:57,112 INFO L84 FinitePrefix]: Finished finitePrefix Result has 106566 conditions, 50435 events. 8459/50435 cut-off events. For 108250/112469 co-relation queries the response was YES. Maximal size of possible extension queue 1854. Compared 819491 event pairs, 3784 based on Foata normal form. 67/44526 useless extension candidates. Maximal degree in co-relation 106413. Up to 9470 conditions per place. [2022-01-19 13:30:57,213 INFO L132 encePairwiseOnDemand]: 319/340 looper letters, 217 selfloop transitions, 39 changer transitions 4/626 dead transitions. [2022-01-19 13:30:57,213 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 692 places, 626 transitions, 5740 flow [2022-01-19 13:30:57,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-19 13:30:57,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-01-19 13:30:57,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4398 transitions. [2022-01-19 13:30:57,215 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7186274509803922 [2022-01-19 13:30:57,215 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4398 transitions. [2022-01-19 13:30:57,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4398 transitions. [2022-01-19 13:30:57,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:30:57,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4398 transitions. [2022-01-19 13:30:57,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 244.33333333333334) internal successors, (4398), 18 states have internal predecessors, (4398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:30:57,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 340.0) internal successors, (6460), 19 states have internal predecessors, (6460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:30:57,221 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 340.0) internal successors, (6460), 19 states have internal predecessors, (6460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:30:57,221 INFO L186 Difference]: Start difference. First operand has 677 places, 533 transitions, 4863 flow. Second operand 18 states and 4398 transitions. [2022-01-19 13:30:57,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 692 places, 626 transitions, 5740 flow [2022-01-19 13:30:57,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 666 places, 626 transitions, 5631 flow, removed 7 selfloop flow, removed 26 redundant places. [2022-01-19 13:30:57,897 INFO L242 Difference]: Finished difference. Result has 675 places, 540 transitions, 4933 flow [2022-01-19 13:30:57,897 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4770, PETRI_DIFFERENCE_MINUEND_PLACES=649, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=494, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4933, PETRI_PLACES=675, PETRI_TRANSITIONS=540} [2022-01-19 13:30:57,898 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 374 predicate places. [2022-01-19 13:30:57,898 INFO L470 AbstractCegarLoop]: Abstraction has has 675 places, 540 transitions, 4933 flow [2022-01-19 13:30:57,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 238.46153846153845) internal successors, (3100), 13 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 13:30:57,898 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:30:57,898 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:30:57,918 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-19 13:30:58,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:30:58,101 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 13:30:58,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:30:58,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1461126064, now seen corresponding path program 1 times [2022-01-19 13:30:58,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:30:58,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564985805] [2022-01-19 13:30:58,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:30:58,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:30:58,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:30:58,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:30:58,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:30:58,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564985805] [2022-01-19 13:30:58,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564985805] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:30:58,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:30:58,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 13:30:58,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807990463] [2022-01-19 13:30:58,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:30:58,156 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 13:30:58,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:30:58,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 13:30:58,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-19 13:30:58,157 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 340 [2022-01-19 13:30:58,158 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 675 places, 540 transitions, 4933 flow. Second operand has 7 states, 7 states have (on average 273.7142857142857) internal successors, (1916), 7 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:30:58,158 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:30:58,158 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 340 [2022-01-19 13:30:58,158 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:31:03,444 INFO L129 PetriNetUnfolder]: 3608/24349 cut-off events. [2022-01-19 13:31:03,444 INFO L130 PetriNetUnfolder]: For 85485/89284 co-relation queries the response was YES. [2022-01-19 13:31:03,840 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61172 conditions, 24349 events. 3608/24349 cut-off events. For 85485/89284 co-relation queries the response was YES. Maximal size of possible extension queue 1113. Compared 366642 event pairs, 1254 based on Foata normal form. 27/22345 useless extension candidates. Maximal degree in co-relation 61012. Up to 2900 conditions per place. [2022-01-19 13:31:03,874 INFO L132 encePairwiseOnDemand]: 329/340 looper letters, 104 selfloop transitions, 12 changer transitions 26/558 dead transitions. [2022-01-19 13:31:03,874 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 682 places, 558 transitions, 5249 flow [2022-01-19 13:31:03,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 13:31:03,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 13:31:03,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2784 transitions. [2022-01-19 13:31:03,876 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8188235294117647 [2022-01-19 13:31:03,876 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2784 transitions. [2022-01-19 13:31:03,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2784 transitions. [2022-01-19 13:31:03,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:31:03,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2784 transitions. [2022-01-19 13:31:03,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 278.4) internal successors, (2784), 10 states have internal predecessors, (2784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:03,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 340.0) internal successors, (3740), 11 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:03,879 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 340.0) internal successors, (3740), 11 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:03,879 INFO L186 Difference]: Start difference. First operand has 675 places, 540 transitions, 4933 flow. Second operand 10 states and 2784 transitions. [2022-01-19 13:31:03,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 682 places, 558 transitions, 5249 flow [2022-01-19 13:31:04,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 671 places, 558 transitions, 5195 flow, removed 12 selfloop flow, removed 11 redundant places. [2022-01-19 13:31:04,385 INFO L242 Difference]: Finished difference. Result has 673 places, 509 transitions, 4677 flow [2022-01-19 13:31:04,386 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4795, PETRI_DIFFERENCE_MINUEND_PLACES=662, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=516, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4677, PETRI_PLACES=673, PETRI_TRANSITIONS=509} [2022-01-19 13:31:04,386 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 372 predicate places. [2022-01-19 13:31:04,386 INFO L470 AbstractCegarLoop]: Abstraction has has 673 places, 509 transitions, 4677 flow [2022-01-19 13:31:04,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 273.7142857142857) internal successors, (1916), 7 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:04,386 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:31:04,387 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:31:04,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-19 13:31:04,387 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 13:31:04,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:31:04,387 INFO L85 PathProgramCache]: Analyzing trace with hash -633588800, now seen corresponding path program 1 times [2022-01-19 13:31:04,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:31:04,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168570950] [2022-01-19 13:31:04,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:31:04,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:31:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:31:04,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:31:04,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:31:04,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168570950] [2022-01-19 13:31:04,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168570950] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:31:04,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:31:04,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 13:31:04,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553349158] [2022-01-19 13:31:04,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:31:04,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 13:31:04,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:31:04,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 13:31:04,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-19 13:31:04,430 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 340 [2022-01-19 13:31:04,430 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 673 places, 509 transitions, 4677 flow. Second operand has 7 states, 7 states have (on average 273.7142857142857) internal successors, (1916), 7 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:04,430 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:31:04,430 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 340 [2022-01-19 13:31:04,430 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:31:07,394 INFO L129 PetriNetUnfolder]: 2595/13834 cut-off events. [2022-01-19 13:31:07,394 INFO L130 PetriNetUnfolder]: For 47505/49783 co-relation queries the response was YES. [2022-01-19 13:31:07,568 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36566 conditions, 13834 events. 2595/13834 cut-off events. For 47505/49783 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 180979 event pairs, 1182 based on Foata normal form. 58/12761 useless extension candidates. Maximal degree in co-relation 36407. Up to 3153 conditions per place. [2022-01-19 13:31:07,787 INFO L132 encePairwiseOnDemand]: 329/340 looper letters, 102 selfloop transitions, 12 changer transitions 6/529 dead transitions. [2022-01-19 13:31:07,787 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 669 places, 529 transitions, 4981 flow [2022-01-19 13:31:07,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 13:31:07,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 13:31:07,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2780 transitions. [2022-01-19 13:31:07,788 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8176470588235294 [2022-01-19 13:31:07,788 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2780 transitions. [2022-01-19 13:31:07,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2780 transitions. [2022-01-19 13:31:07,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:31:07,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2780 transitions. [2022-01-19 13:31:07,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 278.0) internal successors, (2780), 10 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:07,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 340.0) internal successors, (3740), 11 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:07,792 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 340.0) internal successors, (3740), 11 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:07,792 INFO L186 Difference]: Start difference. First operand has 673 places, 509 transitions, 4677 flow. Second operand 10 states and 2780 transitions. [2022-01-19 13:31:07,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 669 places, 529 transitions, 4981 flow [2022-01-19 13:31:08,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 649 places, 529 transitions, 4930 flow, removed 3 selfloop flow, removed 20 redundant places. [2022-01-19 13:31:08,023 INFO L242 Difference]: Finished difference. Result has 651 places, 502 transitions, 4601 flow [2022-01-19 13:31:08,023 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4582, PETRI_DIFFERENCE_MINUEND_PLACES=640, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4601, PETRI_PLACES=651, PETRI_TRANSITIONS=502} [2022-01-19 13:31:08,023 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 350 predicate places. [2022-01-19 13:31:08,023 INFO L470 AbstractCegarLoop]: Abstraction has has 651 places, 502 transitions, 4601 flow [2022-01-19 13:31:08,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 273.7142857142857) internal successors, (1916), 7 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:08,023 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:31:08,024 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:31:08,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-19 13:31:08,024 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 13:31:08,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:31:08,024 INFO L85 PathProgramCache]: Analyzing trace with hash -556891992, now seen corresponding path program 1 times [2022-01-19 13:31:08,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:31:08,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181010409] [2022-01-19 13:31:08,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:31:08,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:31:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:31:08,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:31:08,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:31:08,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181010409] [2022-01-19 13:31:08,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181010409] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:31:08,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:31:08,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 13:31:08,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881687012] [2022-01-19 13:31:08,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:31:08,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 13:31:08,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:31:08,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 13:31:08,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-19 13:31:08,069 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 340 [2022-01-19 13:31:08,069 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 651 places, 502 transitions, 4601 flow. Second operand has 7 states, 7 states have (on average 273.7142857142857) internal successors, (1916), 7 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:08,069 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:31:08,069 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 340 [2022-01-19 13:31:08,069 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:31:10,518 INFO L129 PetriNetUnfolder]: 1639/10470 cut-off events. [2022-01-19 13:31:10,518 INFO L130 PetriNetUnfolder]: For 42344/44307 co-relation queries the response was YES. [2022-01-19 13:31:10,625 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29702 conditions, 10470 events. 1639/10470 cut-off events. For 42344/44307 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 132194 event pairs, 441 based on Foata normal form. 34/9758 useless extension candidates. Maximal degree in co-relation 29546. Up to 1301 conditions per place. [2022-01-19 13:31:10,642 INFO L132 encePairwiseOnDemand]: 329/340 looper letters, 81 selfloop transitions, 12 changer transitions 45/530 dead transitions. [2022-01-19 13:31:10,642 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 659 places, 530 transitions, 4948 flow [2022-01-19 13:31:10,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 13:31:10,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 13:31:10,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2773 transitions. [2022-01-19 13:31:10,644 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8155882352941176 [2022-01-19 13:31:10,644 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2773 transitions. [2022-01-19 13:31:10,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2773 transitions. [2022-01-19 13:31:10,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:31:10,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2773 transitions. [2022-01-19 13:31:10,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 277.3) internal successors, (2773), 10 states have internal predecessors, (2773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:10,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 340.0) internal successors, (3740), 11 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:10,647 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 340.0) internal successors, (3740), 11 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:10,647 INFO L186 Difference]: Start difference. First operand has 651 places, 502 transitions, 4601 flow. Second operand 10 states and 2773 transitions. [2022-01-19 13:31:10,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 659 places, 530 transitions, 4948 flow [2022-01-19 13:31:10,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 648 places, 530 transitions, 4912 flow, removed 5 selfloop flow, removed 11 redundant places. [2022-01-19 13:31:10,851 INFO L242 Difference]: Finished difference. Result has 651 places, 460 transitions, 4201 flow [2022-01-19 13:31:10,851 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4547, PETRI_DIFFERENCE_MINUEND_PLACES=639, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=500, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4201, PETRI_PLACES=651, PETRI_TRANSITIONS=460} [2022-01-19 13:31:10,851 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 350 predicate places. [2022-01-19 13:31:10,851 INFO L470 AbstractCegarLoop]: Abstraction has has 651 places, 460 transitions, 4201 flow [2022-01-19 13:31:10,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 273.7142857142857) internal successors, (1916), 7 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:10,851 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:31:10,852 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:31:10,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-19 13:31:10,852 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 13:31:10,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:31:10,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1630836678, now seen corresponding path program 1 times [2022-01-19 13:31:10,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:31:10,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192304218] [2022-01-19 13:31:10,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:31:10,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:31:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:31:10,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:31:10,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:31:10,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192304218] [2022-01-19 13:31:10,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192304218] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 13:31:10,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479620849] [2022-01-19 13:31:10,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:31:10,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:31:10,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:31:10,951 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 13:31:10,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-19 13:31:11,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:31:11,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-19 13:31:11,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 13:31:11,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:31:11,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 13:31:11,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 13:31:11,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1479620849] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 13:31:11,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 13:31:11,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13, 11] total 23 [2022-01-19 13:31:11,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128843925] [2022-01-19 13:31:11,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:31:11,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-19 13:31:11,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:31:11,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-19 13:31:11,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2022-01-19 13:31:11,951 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 263 out of 340 [2022-01-19 13:31:11,952 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 651 places, 460 transitions, 4201 flow. Second operand has 11 states, 11 states have (on average 267.45454545454544) internal successors, (2942), 11 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:11,952 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:31:11,952 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 263 of 340 [2022-01-19 13:31:11,952 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:31:15,533 INFO L129 PetriNetUnfolder]: 3619/17220 cut-off events. [2022-01-19 13:31:15,533 INFO L130 PetriNetUnfolder]: For 32023/33157 co-relation queries the response was YES. [2022-01-19 13:31:15,734 INFO L84 FinitePrefix]: Finished finitePrefix Result has 37430 conditions, 17220 events. 3619/17220 cut-off events. For 32023/33157 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 227169 event pairs, 1146 based on Foata normal form. 193/16129 useless extension candidates. Maximal degree in co-relation 37274. Up to 1892 conditions per place. [2022-01-19 13:31:15,769 INFO L132 encePairwiseOnDemand]: 323/340 looper letters, 105 selfloop transitions, 18 changer transitions 1/512 dead transitions. [2022-01-19 13:31:15,769 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 512 transitions, 4639 flow [2022-01-19 13:31:15,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-19 13:31:15,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-01-19 13:31:15,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4068 transitions. [2022-01-19 13:31:15,771 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7976470588235294 [2022-01-19 13:31:15,771 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4068 transitions. [2022-01-19 13:31:15,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4068 transitions. [2022-01-19 13:31:15,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:31:15,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4068 transitions. [2022-01-19 13:31:15,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 271.2) internal successors, (4068), 15 states have internal predecessors, (4068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:15,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 340.0) internal successors, (5440), 16 states have internal predecessors, (5440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:15,776 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 340.0) internal successors, (5440), 16 states have internal predecessors, (5440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:15,776 INFO L186 Difference]: Start difference. First operand has 651 places, 460 transitions, 4201 flow. Second operand 15 states and 4068 transitions. [2022-01-19 13:31:15,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 512 transitions, 4639 flow [2022-01-19 13:31:16,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 579 places, 512 transitions, 4443 flow, removed 59 selfloop flow, removed 40 redundant places. [2022-01-19 13:31:16,005 INFO L242 Difference]: Finished difference. Result has 582 places, 465 transitions, 4132 flow [2022-01-19 13:31:16,005 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4067, PETRI_DIFFERENCE_MINUEND_PLACES=565, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=444, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4132, PETRI_PLACES=582, PETRI_TRANSITIONS=465} [2022-01-19 13:31:16,005 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 281 predicate places. [2022-01-19 13:31:16,005 INFO L470 AbstractCegarLoop]: Abstraction has has 582 places, 465 transitions, 4132 flow [2022-01-19 13:31:16,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 267.45454545454544) internal successors, (2942), 11 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:16,006 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:31:16,006 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:31:16,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-19 13:31:16,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:31:16,219 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 13:31:16,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:31:16,220 INFO L85 PathProgramCache]: Analyzing trace with hash 520118201, now seen corresponding path program 1 times [2022-01-19 13:31:16,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:31:16,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812398375] [2022-01-19 13:31:16,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:31:16,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:31:16,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:31:16,270 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:31:16,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:31:16,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812398375] [2022-01-19 13:31:16,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812398375] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:31:16,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 13:31:16,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 13:31:16,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519931507] [2022-01-19 13:31:16,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:31:16,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 13:31:16,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:31:16,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 13:31:16,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-19 13:31:16,272 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 340 [2022-01-19 13:31:16,272 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 465 transitions, 4132 flow. Second operand has 7 states, 7 states have (on average 274.2857142857143) internal successors, (1920), 7 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:16,272 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:31:16,273 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 340 [2022-01-19 13:31:16,273 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:31:17,484 INFO L129 PetriNetUnfolder]: 821/5563 cut-off events. [2022-01-19 13:31:17,484 INFO L130 PetriNetUnfolder]: For 16521/17362 co-relation queries the response was YES. [2022-01-19 13:31:17,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13195 conditions, 5563 events. 821/5563 cut-off events. For 16521/17362 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 60950 event pairs, 328 based on Foata normal form. 58/5232 useless extension candidates. Maximal degree in co-relation 13063. Up to 1156 conditions per place. [2022-01-19 13:31:17,558 INFO L132 encePairwiseOnDemand]: 329/340 looper letters, 56 selfloop transitions, 8 changer transitions 29/485 dead transitions. [2022-01-19 13:31:17,558 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 590 places, 485 transitions, 4362 flow [2022-01-19 13:31:17,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-19 13:31:17,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-01-19 13:31:17,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2770 transitions. [2022-01-19 13:31:17,560 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8147058823529412 [2022-01-19 13:31:17,560 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2770 transitions. [2022-01-19 13:31:17,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2770 transitions. [2022-01-19 13:31:17,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:31:17,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2770 transitions. [2022-01-19 13:31:17,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 277.0) internal successors, (2770), 10 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:17,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 340.0) internal successors, (3740), 11 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:17,564 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 340.0) internal successors, (3740), 11 states have internal predecessors, (3740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:17,565 INFO L186 Difference]: Start difference. First operand has 582 places, 465 transitions, 4132 flow. Second operand 10 states and 2770 transitions. [2022-01-19 13:31:17,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 590 places, 485 transitions, 4362 flow [2022-01-19 13:31:17,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 580 places, 485 transitions, 4336 flow, removed 1 selfloop flow, removed 10 redundant places. [2022-01-19 13:31:17,636 INFO L242 Difference]: Finished difference. Result has 580 places, 454 transitions, 4066 flow [2022-01-19 13:31:17,637 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4098, PETRI_DIFFERENCE_MINUEND_PLACES=571, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4066, PETRI_PLACES=580, PETRI_TRANSITIONS=454} [2022-01-19 13:31:17,637 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 279 predicate places. [2022-01-19 13:31:17,637 INFO L470 AbstractCegarLoop]: Abstraction has has 580 places, 454 transitions, 4066 flow [2022-01-19 13:31:17,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 274.2857142857143) internal successors, (1920), 7 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:17,637 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:31:17,637 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:31:17,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-19 13:31:17,638 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 13:31:17,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:31:17,638 INFO L85 PathProgramCache]: Analyzing trace with hash 438695501, now seen corresponding path program 1 times [2022-01-19 13:31:17,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:31:17,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279609072] [2022-01-19 13:31:17,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:31:17,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:31:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:31:17,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:31:17,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:31:17,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279609072] [2022-01-19 13:31:17,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279609072] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 13:31:17,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504785152] [2022-01-19 13:31:17,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:31:17,843 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:31:17,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:31:17,844 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 13:31:17,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-19 13:31:17,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:31:17,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-19 13:31:17,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 13:31:18,725 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:31:18,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 13:31:19,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:31:19,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504785152] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 13:31:19,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 13:31:19,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [20, 18] total 37 [2022-01-19 13:31:19,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420610935] [2022-01-19 13:31:19,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:31:19,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 13:31:19,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:31:19,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 13:31:19,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1142, Unknown=0, NotChecked=0, Total=1332 [2022-01-19 13:31:19,885 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 340 [2022-01-19 13:31:19,886 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 580 places, 454 transitions, 4066 flow. Second operand has 18 states, 18 states have (on average 232.38888888888889) internal successors, (4183), 18 states have internal predecessors, (4183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:19,886 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:31:19,887 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 340 [2022-01-19 13:31:19,887 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:31:24,166 INFO L129 PetriNetUnfolder]: 4137/20863 cut-off events. [2022-01-19 13:31:24,166 INFO L130 PetriNetUnfolder]: For 37393/40526 co-relation queries the response was YES. [2022-01-19 13:31:24,419 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42327 conditions, 20863 events. 4137/20863 cut-off events. For 37393/40526 co-relation queries the response was YES. Maximal size of possible extension queue 948. Compared 290340 event pairs, 1940 based on Foata normal form. 763/19653 useless extension candidates. Maximal degree in co-relation 42196. Up to 3149 conditions per place. [2022-01-19 13:31:24,452 INFO L132 encePairwiseOnDemand]: 317/340 looper letters, 169 selfloop transitions, 24 changer transitions 14/543 dead transitions. [2022-01-19 13:31:24,452 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 593 places, 543 transitions, 4958 flow [2022-01-19 13:31:24,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-19 13:31:24,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-01-19 13:31:24,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 5169 transitions. [2022-01-19 13:31:24,454 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6910427807486631 [2022-01-19 13:31:24,454 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 5169 transitions. [2022-01-19 13:31:24,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 5169 transitions. [2022-01-19 13:31:24,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:31:24,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 5169 transitions. [2022-01-19 13:31:24,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 234.95454545454547) internal successors, (5169), 22 states have internal predecessors, (5169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:24,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 340.0) internal successors, (7820), 23 states have internal predecessors, (7820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:24,461 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 340.0) internal successors, (7820), 23 states have internal predecessors, (7820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:24,461 INFO L186 Difference]: Start difference. First operand has 580 places, 454 transitions, 4066 flow. Second operand 22 states and 5169 transitions. [2022-01-19 13:31:24,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 593 places, 543 transitions, 4958 flow [2022-01-19 13:31:24,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 543 transitions, 4879 flow, removed 13 selfloop flow, removed 17 redundant places. [2022-01-19 13:31:24,624 INFO L242 Difference]: Finished difference. Result has 583 places, 458 transitions, 4093 flow [2022-01-19 13:31:24,625 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4009, PETRI_DIFFERENCE_MINUEND_PLACES=555, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=4093, PETRI_PLACES=583, PETRI_TRANSITIONS=458} [2022-01-19 13:31:24,625 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 282 predicate places. [2022-01-19 13:31:24,625 INFO L470 AbstractCegarLoop]: Abstraction has has 583 places, 458 transitions, 4093 flow [2022-01-19 13:31:24,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 232.38888888888889) internal successors, (4183), 18 states have internal predecessors, (4183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:24,625 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:31:24,626 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:31:24,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-19 13:31:24,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-01-19 13:31:24,826 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 13:31:24,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:31:24,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1482609683, now seen corresponding path program 2 times [2022-01-19 13:31:24,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:31:24,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859082323] [2022-01-19 13:31:24,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:31:24,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:31:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:31:25,046 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:31:25,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:31:25,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859082323] [2022-01-19 13:31:25,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859082323] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 13:31:25,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23606741] [2022-01-19 13:31:25,047 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 13:31:25,047 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:31:25,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:31:25,048 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 13:31:25,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-19 13:31:25,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-19 13:31:25,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 13:31:25,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-19 13:31:25,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 13:31:25,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-19 13:31:25,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 13:31:25,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23606741] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:31:25,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 13:31:25,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [20] total 26 [2022-01-19 13:31:25,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757964860] [2022-01-19 13:31:25,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:31:25,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 13:31:25,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:31:25,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 13:31:25,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=588, Unknown=0, NotChecked=0, Total=650 [2022-01-19 13:31:25,483 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 252 out of 340 [2022-01-19 13:31:25,484 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 458 transitions, 4093 flow. Second operand has 10 states, 10 states have (on average 257.7) internal successors, (2577), 10 states have internal predecessors, (2577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:25,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:31:25,484 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 252 of 340 [2022-01-19 13:31:25,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:31:30,718 INFO L129 PetriNetUnfolder]: 4979/25792 cut-off events. [2022-01-19 13:31:30,718 INFO L130 PetriNetUnfolder]: For 46898/51259 co-relation queries the response was YES. [2022-01-19 13:31:31,226 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51139 conditions, 25792 events. 4979/25792 cut-off events. For 46898/51259 co-relation queries the response was YES. Maximal size of possible extension queue 1142. Compared 371953 event pairs, 1686 based on Foata normal form. 880/24257 useless extension candidates. Maximal degree in co-relation 51009. Up to 4667 conditions per place. [2022-01-19 13:31:31,263 INFO L132 encePairwiseOnDemand]: 330/340 looper letters, 128 selfloop transitions, 2 changer transitions 37/534 dead transitions. [2022-01-19 13:31:31,263 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 591 places, 534 transitions, 4853 flow [2022-01-19 13:31:31,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-19 13:31:31,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-01-19 13:31:31,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2886 transitions. [2022-01-19 13:31:31,265 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7716577540106951 [2022-01-19 13:31:31,265 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2886 transitions. [2022-01-19 13:31:31,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2886 transitions. [2022-01-19 13:31:31,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:31:31,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2886 transitions. [2022-01-19 13:31:31,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 262.3636363636364) internal successors, (2886), 11 states have internal predecessors, (2886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:31,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 340.0) internal successors, (4080), 12 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:31,269 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 340.0) internal successors, (4080), 12 states have internal predecessors, (4080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:31,269 INFO L186 Difference]: Start difference. First operand has 583 places, 458 transitions, 4093 flow. Second operand 11 states and 2886 transitions. [2022-01-19 13:31:31,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 591 places, 534 transitions, 4853 flow [2022-01-19 13:31:31,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 573 places, 534 transitions, 4790 flow, removed 7 selfloop flow, removed 18 redundant places. [2022-01-19 13:31:31,406 INFO L242 Difference]: Finished difference. Result has 582 places, 459 transitions, 4073 flow [2022-01-19 13:31:31,406 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4040, PETRI_DIFFERENCE_MINUEND_PLACES=563, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4073, PETRI_PLACES=582, PETRI_TRANSITIONS=459} [2022-01-19 13:31:31,406 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 281 predicate places. [2022-01-19 13:31:31,406 INFO L470 AbstractCegarLoop]: Abstraction has has 582 places, 459 transitions, 4073 flow [2022-01-19 13:31:31,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 257.7) internal successors, (2577), 10 states have internal predecessors, (2577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:31,407 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:31:31,407 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:31:31,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-19 13:31:31,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:31:31,611 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 13:31:31,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:31:31,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1441027375, now seen corresponding path program 3 times [2022-01-19 13:31:31,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:31:31,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650887716] [2022-01-19 13:31:31,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:31:31,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:31:31,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:31:31,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:31:31,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:31:31,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650887716] [2022-01-19 13:31:31,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650887716] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 13:31:31,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232903376] [2022-01-19 13:31:31,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 13:31:31,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:31:31,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:31:31,837 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 13:31:31,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-19 13:31:31,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-01-19 13:31:31,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 13:31:31,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 31 conjunts are in the unsatisfiable core [2022-01-19 13:31:31,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 13:31:32,644 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-19 13:31:32,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 13:31:32,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232903376] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 13:31:32,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 13:31:32,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [20] total 36 [2022-01-19 13:31:32,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976629738] [2022-01-19 13:31:32,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:31:32,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-19 13:31:32,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:31:32,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-19 13:31:32,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1163, Unknown=0, NotChecked=0, Total=1260 [2022-01-19 13:31:32,647 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 340 [2022-01-19 13:31:32,649 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 582 places, 459 transitions, 4073 flow. Second operand has 20 states, 20 states have (on average 229.0) internal successors, (4580), 20 states have internal predecessors, (4580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:32,649 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:31:32,649 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 340 [2022-01-19 13:31:32,649 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 13:31:39,096 INFO L129 PetriNetUnfolder]: 5151/27894 cut-off events. [2022-01-19 13:31:39,096 INFO L130 PetriNetUnfolder]: For 53489/57862 co-relation queries the response was YES. [2022-01-19 13:31:39,426 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57770 conditions, 27894 events. 5151/27894 cut-off events. For 53489/57862 co-relation queries the response was YES. Maximal size of possible extension queue 1237. Compared 411596 event pairs, 2954 based on Foata normal form. 880/26181 useless extension candidates. Maximal degree in co-relation 57633. Up to 4266 conditions per place. [2022-01-19 13:31:39,465 INFO L132 encePairwiseOnDemand]: 308/340 looper letters, 175 selfloop transitions, 41 changer transitions 14/564 dead transitions. [2022-01-19 13:31:39,465 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 604 places, 564 transitions, 5135 flow [2022-01-19 13:31:39,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-19 13:31:39,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-01-19 13:31:39,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 6921 transitions. [2022-01-19 13:31:39,468 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6785294117647059 [2022-01-19 13:31:39,468 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 6921 transitions. [2022-01-19 13:31:39,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 6921 transitions. [2022-01-19 13:31:39,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 13:31:39,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 6921 transitions. [2022-01-19 13:31:39,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 230.7) internal successors, (6921), 30 states have internal predecessors, (6921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:39,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 340.0) internal successors, (10540), 31 states have internal predecessors, (10540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:39,477 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 340.0) internal successors, (10540), 31 states have internal predecessors, (10540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:39,477 INFO L186 Difference]: Start difference. First operand has 582 places, 459 transitions, 4073 flow. Second operand 30 states and 6921 transitions. [2022-01-19 13:31:39,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 604 places, 564 transitions, 5135 flow [2022-01-19 13:31:39,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 564 transitions, 5063 flow, removed 34 selfloop flow, removed 8 redundant places. [2022-01-19 13:31:39,711 INFO L242 Difference]: Finished difference. Result has 604 places, 475 transitions, 4234 flow [2022-01-19 13:31:39,711 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=340, PETRI_DIFFERENCE_MINUEND_FLOW=4058, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=430, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4234, PETRI_PLACES=604, PETRI_TRANSITIONS=475} [2022-01-19 13:31:39,712 INFO L334 CegarLoopForPetriNet]: 301 programPoint places, 303 predicate places. [2022-01-19 13:31:39,712 INFO L470 AbstractCegarLoop]: Abstraction has has 604 places, 475 transitions, 4234 flow [2022-01-19 13:31:39,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 229.0) internal successors, (4580), 20 states have internal predecessors, (4580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:39,712 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 13:31:39,712 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:31:39,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-19 13:31:39,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable71 [2022-01-19 13:31:39,913 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 13:31:39,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 13:31:39,914 INFO L85 PathProgramCache]: Analyzing trace with hash -532894407, now seen corresponding path program 4 times [2022-01-19 13:31:39,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 13:31:39,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290987723] [2022-01-19 13:31:39,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 13:31:39,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 13:31:39,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 13:31:40,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:31:40,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 13:31:40,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290987723] [2022-01-19 13:31:40,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290987723] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 13:31:40,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60947198] [2022-01-19 13:31:40,108 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 13:31:40,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:31:40,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 13:31:40,109 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-19 13:31:40,110 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-19 13:31:40,227 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 13:31:40,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 13:31:40,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-19 13:31:40,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 13:31:40,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:31:40,903 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 13:31:41,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 13:31:41,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60947198] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-19 13:31:41,823 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-19 13:31:41,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [20, 18] total 37 [2022-01-19 13:31:41,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287165065] [2022-01-19 13:31:41,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 13:31:41,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-19 13:31:41,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 13:31:41,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-19 13:31:41,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1146, Unknown=0, NotChecked=0, Total=1332 [2022-01-19 13:31:41,826 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 340 [2022-01-19 13:31:41,827 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 604 places, 475 transitions, 4234 flow. Second operand has 18 states, 18 states have (on average 232.38888888888889) internal successors, (4183), 18 states have internal predecessors, (4183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 13:31:41,827 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 13:31:41,827 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 340 [2022-01-19 13:31:41,827 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-01-19 13:31:43,717 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 13:31:43,717 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 13:31:43,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-19 13:31:43,767 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 13:31:43,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-19 13:31:43,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 13:31:43,968 WARN L594 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (18states, 228/340 universal loopers) in iteration 73,while PetriNetUnfolder was constructing finite prefix that currently has 18565 conditions, 7431 events (1373/7430 cut-off events. For 27334/29464 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 104701 event pairs, 704 based on Foata normal form. 544/7814 useless extension candidates. Maximal degree in co-relation 18427. Up to 1201 conditions per place.). [2022-01-19 13:31:43,969 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-19 13:31:43,969 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-19 13:31:43,969 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-19 13:31:43,972 INFO L732 BasicCegarLoop]: Path program histogram: [12, 12, 6, 6, 5, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 13:31:43,973 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 13:31:43,973 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 13:31:43,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 01:31:43 BasicIcfg [2022-01-19 13:31:43,975 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 13:31:43,975 INFO L158 Benchmark]: Toolchain (without parser) took 708484.75ms. Allocated memory was 352.3MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 297.5MB in the beginning and 13.8GB in the end (delta: -13.5GB). Peak memory consumption was 2.9GB. Max. memory is 16.0GB. [2022-01-19 13:31:43,975 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 352.3MB. Free memory was 313.8MB in the beginning and 313.7MB in the end (delta: 73.0kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 13:31:43,975 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.06ms. Allocated memory was 352.3MB in the beginning and 453.0MB in the end (delta: 100.7MB). Free memory was 297.3MB in the beginning and 421.2MB in the end (delta: -124.0MB). Peak memory consumption was 11.3MB. Max. memory is 16.0GB. [2022-01-19 13:31:43,976 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.41ms. Allocated memory is still 453.0MB. Free memory was 421.2MB in the beginning and 419.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 13:31:43,976 INFO L158 Benchmark]: Boogie Preprocessor took 22.15ms. Allocated memory is still 453.0MB. Free memory was 419.1MB in the beginning and 417.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 13:31:43,976 INFO L158 Benchmark]: RCFGBuilder took 457.41ms. Allocated memory is still 453.0MB. Free memory was 417.0MB in the beginning and 394.0MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2022-01-19 13:31:43,976 INFO L158 Benchmark]: TraceAbstraction took 707760.98ms. Allocated memory was 453.0MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 392.9MB in the beginning and 13.8GB in the end (delta: -13.4GB). Peak memory consumption was 2.9GB. Max. memory is 16.0GB. [2022-01-19 13:31:43,977 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 352.3MB. Free memory was 313.8MB in the beginning and 313.7MB in the end (delta: 73.0kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 213.06ms. Allocated memory was 352.3MB in the beginning and 453.0MB in the end (delta: 100.7MB). Free memory was 297.3MB in the beginning and 421.2MB in the end (delta: -124.0MB). Peak memory consumption was 11.3MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 27.41ms. Allocated memory is still 453.0MB. Free memory was 421.2MB in the beginning and 419.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 22.15ms. Allocated memory is still 453.0MB. Free memory was 419.1MB in the beginning and 417.0MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 457.41ms. Allocated memory is still 453.0MB. Free memory was 417.0MB in the beginning and 394.0MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 707760.98ms. Allocated memory was 453.0MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 392.9MB in the beginning and 13.8GB in the end (delta: -13.4GB). Peak memory consumption was 2.9GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (18states, 228/340 universal loopers) in iteration 73,while PetriNetUnfolder was constructing finite prefix that currently has 18565 conditions, 7431 events (1373/7430 cut-off events. For 27334/29464 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 104701 event pairs, 704 based on Foata normal form. 544/7814 useless extension candidates. Maximal degree in co-relation 18427. Up to 1201 conditions per place.). - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (18states, 228/340 universal loopers) in iteration 73,while PetriNetUnfolder was constructing finite prefix that currently has 18565 conditions, 7431 events (1373/7430 cut-off events. For 27334/29464 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 104701 event pairs, 704 based on Foata normal form. 544/7814 useless extension candidates. Maximal degree in co-relation 18427. Up to 1201 conditions per place.). - TimeoutResultAtElement [Line: 120]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (18states, 228/340 universal loopers) in iteration 73,while PetriNetUnfolder was constructing finite prefix that currently has 18565 conditions, 7431 events (1373/7430 cut-off events. For 27334/29464 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 104701 event pairs, 704 based on Foata normal form. 544/7814 useless extension candidates. Maximal degree in co-relation 18427. Up to 1201 conditions per place.). - TimeoutResultAtElement [Line: 122]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (18states, 228/340 universal loopers) in iteration 73,while PetriNetUnfolder was constructing finite prefix that currently has 18565 conditions, 7431 events (1373/7430 cut-off events. For 27334/29464 co-relation queries the response was YES. Maximal size of possible extension queue 912. Compared 104701 event pairs, 704 based on Foata normal form. 544/7814 useless extension candidates. Maximal degree in co-relation 18427. Up to 1201 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 411 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 707.6s, OverallIterations: 73, TraceHistogramMax: 1, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 682.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10895 SdHoareTripleChecker+Valid, 8.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10895 mSDsluCounter, 14613 SdHoareTripleChecker+Invalid, 6.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15642 mSDsCounter, 408 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19744 IncrementalHoareTripleChecker+Invalid, 20152 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 408 mSolverCounterUnsat, 2481 mSDtfsCounter, 19744 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4765 GetRequests, 3669 SyntacticMatches, 17 SemanticMatches, 1079 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8934 ImplicationChecksByTransitivity, 15.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4933occurred in iteration=64, InterpolantAutomatonStates: 788, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 19.4s InterpolantComputationTime, 16306 NumberOfCodeBlocks, 16209 NumberOfCodeBlocksAsserted, 84 NumberOfCheckSat, 17633 ConstructedInterpolants, 0 QuantifiedInterpolants, 64818 SizeOfPredicates, 169 NumberOfNonLiveVariables, 4821 ConjunctsInSsa, 223 ConjunctsInUnsatCore, 91 InterpolantComputations, 73 PerfectInterpolantSequences, 27/53 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown