/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-3902331-m [2022-09-20 22:24:47,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 22:24:47,721 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 22:24:47,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 22:24:47,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 22:24:47,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 22:24:47,763 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 22:24:47,768 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 22:24:47,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 22:24:47,775 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 22:24:47,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 22:24:47,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 22:24:47,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 22:24:47,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 22:24:47,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 22:24:47,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 22:24:47,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 22:24:47,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 22:24:47,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 22:24:47,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 22:24:47,793 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 22:24:47,794 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 22:24:47,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 22:24:47,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 22:24:47,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 22:24:47,799 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 22:24:47,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 22:24:47,801 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 22:24:47,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 22:24:47,802 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 22:24:47,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 22:24:47,803 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 22:24:47,804 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 22:24:47,805 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 22:24:47,806 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 22:24:47,806 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 22:24:47,806 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 22:24:47,807 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 22:24:47,807 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 22:24:47,807 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 22:24:47,808 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 22:24:47,809 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-20 22:24:47,845 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 22:24:47,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 22:24:47,846 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 22:24:47,846 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 22:24:47,847 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 22:24:47,847 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 22:24:47,847 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 22:24:47,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 22:24:47,847 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 22:24:47,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 22:24:47,848 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 22:24:47,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 22:24:47,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 22:24:47,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 22:24:47,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 22:24:47,849 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 22:24:47,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 22:24:47,849 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 22:24:47,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 22:24:47,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 22:24:47,849 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 22:24:47,849 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 22:24:47,849 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 22:24:47,849 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:24:47,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 22:24:47,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 22:24:47,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 22:24:47,850 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 22:24:47,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 22:24:47,850 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 22:24:47,850 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 22:24:47,850 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 22:24:48,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 22:24:48,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 22:24:48,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 22:24:48,134 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 22:24:48,136 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 22:24:48,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i [2022-09-20 22:24:48,191 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7ff0f645/ed877533eac3474a9d6217baa1c6b99d/FLAG01f2bb143 [2022-09-20 22:24:48,735 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 22:24:48,736 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i [2022-09-20 22:24:48,750 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7ff0f645/ed877533eac3474a9d6217baa1c6b99d/FLAG01f2bb143 [2022-09-20 22:24:49,036 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7ff0f645/ed877533eac3474a9d6217baa1c6b99d [2022-09-20 22:24:49,038 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 22:24:49,039 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 22:24:49,041 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 22:24:49,041 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 22:24:49,043 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 22:24:49,044 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:24:49" (1/1) ... [2022-09-20 22:24:49,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b793b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:24:49, skipping insertion in model container [2022-09-20 22:24:49,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 10:24:49" (1/1) ... [2022-09-20 22:24:49,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 22:24:49,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 22:24:49,245 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-09-20 22:24:49,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:24:49,424 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 22:24:49,436 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix021_power.oepc_pso.oepc_rmo.oepc.i[969,982] [2022-09-20 22:24:49,483 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 22:24:49,527 INFO L208 MainTranslator]: Completed translation [2022-09-20 22:24:49,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:24:49 WrapperNode [2022-09-20 22:24:49,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 22:24:49,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 22:24:49,529 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 22:24:49,529 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 22:24:49,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:24:49" (1/1) ... [2022-09-20 22:24:49,568 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:24:49" (1/1) ... [2022-09-20 22:24:49,601 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 192 [2022-09-20 22:24:49,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 22:24:49,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 22:24:49,602 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 22:24:49,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 22:24:49,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:24:49" (1/1) ... [2022-09-20 22:24:49,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:24:49" (1/1) ... [2022-09-20 22:24:49,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:24:49" (1/1) ... [2022-09-20 22:24:49,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:24:49" (1/1) ... [2022-09-20 22:24:49,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:24:49" (1/1) ... [2022-09-20 22:24:49,627 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:24:49" (1/1) ... [2022-09-20 22:24:49,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:24:49" (1/1) ... [2022-09-20 22:24:49,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 22:24:49,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 22:24:49,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 22:24:49,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 22:24:49,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:24:49" (1/1) ... [2022-09-20 22:24:49,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 22:24:49,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 22:24:49,677 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) [2022-09-20 22:24:49,679 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 [2022-09-20 22:24:49,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 22:24:49,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-20 22:24:49,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 22:24:49,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 22:24:49,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 22:24:49,712 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-09-20 22:24:49,712 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-09-20 22:24:49,712 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-09-20 22:24:49,712 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-09-20 22:24:49,712 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-09-20 22:24:49,715 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-09-20 22:24:49,716 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-09-20 22:24:49,716 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-09-20 22:24:49,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 22:24:49,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-20 22:24:49,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 22:24:49,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 22:24:49,719 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 22:24:49,915 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 22:24:49,917 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 22:24:50,518 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 22:24:50,864 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 22:24:50,865 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-20 22:24:50,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:24:50 BoogieIcfgContainer [2022-09-20 22:24:50,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 22:24:50,870 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 22:24:50,870 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 22:24:50,873 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 22:24:50,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 10:24:49" (1/3) ... [2022-09-20 22:24:50,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d387cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:24:50, skipping insertion in model container [2022-09-20 22:24:50,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 10:24:49" (2/3) ... [2022-09-20 22:24:50,875 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57d387cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 10:24:50, skipping insertion in model container [2022-09-20 22:24:50,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 10:24:50" (3/3) ... [2022-09-20 22:24:50,876 INFO L112 eAbstractionObserver]: Analyzing ICFG mix021_power.oepc_pso.oepc_rmo.oepc.i [2022-09-20 22:24:50,893 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 22:24:50,893 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-09-20 22:24:50,910 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 22:24:50,968 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-09-20 22:24:50,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 137 transitions, 294 flow [2022-09-20 22:24:51,059 INFO L130 PetriNetUnfolder]: 2/133 cut-off events. [2022-09-20 22:24:51,060 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-20 22:24:51,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 133 events. 2/133 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 68 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2022-09-20 22:24:51,065 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 137 transitions, 294 flow [2022-09-20 22:24:51,073 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 144 places, 133 transitions, 278 flow [2022-09-20 22:24:51,094 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 22:24:51,101 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@71faaec7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 22:24:51,101 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-09-20 22:24:51,121 INFO L130 PetriNetUnfolder]: 0/51 cut-off events. [2022-09-20 22:24:51,121 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-20 22:24:51,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:24:51,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:24:51,123 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 22:24:51,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:24:51,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1338494467, now seen corresponding path program 1 times [2022-09-20 22:24:51,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:24:51,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387643708] [2022-09-20 22:24:51,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:24:51,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:24:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:24:51,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:24:51,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:24:51,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387643708] [2022-09-20 22:24:51,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387643708] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:24:51,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:24:51,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-20 22:24:51,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786173278] [2022-09-20 22:24:51,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:24:51,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 22:24:51,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:24:51,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 22:24:51,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 22:24:51,493 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 137 [2022-09-20 22:24:51,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 133 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:24:51,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:24:51,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 137 [2022-09-20 22:24:51,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:24:51,802 INFO L130 PetriNetUnfolder]: 162/620 cut-off events. [2022-09-20 22:24:51,802 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2022-09-20 22:24:51,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 926 conditions, 620 events. 162/620 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3385 event pairs, 132 based on Foata normal form. 41/619 useless extension candidates. Maximal degree in co-relation 869. Up to 191 conditions per place. [2022-09-20 22:24:51,817 INFO L137 encePairwiseOnDemand]: 132/137 looper letters, 18 selfloop transitions, 2 changer transitions 0/137 dead transitions. [2022-09-20 22:24:51,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 137 transitions, 335 flow [2022-09-20 22:24:51,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 22:24:51,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 22:24:51,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2022-09-20 22:24:51,836 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9440389294403893 [2022-09-20 22:24:51,837 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 388 transitions. [2022-09-20 22:24:51,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 388 transitions. [2022-09-20 22:24:51,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:24:51,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 388 transitions. [2022-09-20 22:24:51,848 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:24:51,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:24:51,857 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:24:51,858 INFO L175 Difference]: Start difference. First operand has 144 places, 133 transitions, 278 flow. Second operand 3 states and 388 transitions. [2022-09-20 22:24:51,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 137 transitions, 335 flow [2022-09-20 22:24:51,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 137 transitions, 328 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 22:24:51,869 INFO L231 Difference]: Finished difference. Result has 140 places, 129 transitions, 270 flow [2022-09-20 22:24:51,870 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=140, PETRI_TRANSITIONS=129} [2022-09-20 22:24:51,873 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, -4 predicate places. [2022-09-20 22:24:51,874 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 129 transitions, 270 flow [2022-09-20 22:24:51,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:24:51,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:24:51,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:24:51,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 22:24:51,875 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 22:24:51,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:24:51,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1196194587, now seen corresponding path program 1 times [2022-09-20 22:24:51,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:24:51,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423108462] [2022-09-20 22:24:51,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:24:51,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:24:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:24:52,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:24:52,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:24:52,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423108462] [2022-09-20 22:24:52,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423108462] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:24:52,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:24:52,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:24:52,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628640979] [2022-09-20 22:24:52,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:24:52,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:24:52,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:24:52,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:24:52,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:24:52,119 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 137 [2022-09-20 22:24:52,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 129 transitions, 270 flow. Second operand has 7 states, 7 states have (on average 106.28571428571429) internal successors, (744), 7 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:24:52,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:24:52,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 137 [2022-09-20 22:24:52,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:24:57,436 INFO L130 PetriNetUnfolder]: 14819/32121 cut-off events. [2022-09-20 22:24:57,436 INFO L131 PetriNetUnfolder]: For 1153/1153 co-relation queries the response was YES. [2022-09-20 22:24:57,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53787 conditions, 32121 events. 14819/32121 cut-off events. For 1153/1153 co-relation queries the response was YES. Maximal size of possible extension queue 1283. Compared 337122 event pairs, 1155 based on Foata normal form. 0/31513 useless extension candidates. Maximal degree in co-relation 53727. Up to 7247 conditions per place. [2022-09-20 22:24:57,692 INFO L137 encePairwiseOnDemand]: 123/137 looper letters, 48 selfloop transitions, 12 changer transitions 128/275 dead transitions. [2022-09-20 22:24:57,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 275 transitions, 944 flow [2022-09-20 22:24:57,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 22:24:57,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 22:24:57,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1530 transitions. [2022-09-20 22:24:57,697 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8590679393599102 [2022-09-20 22:24:57,697 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1530 transitions. [2022-09-20 22:24:57,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1530 transitions. [2022-09-20 22:24:57,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:24:57,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1530 transitions. [2022-09-20 22:24:57,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 117.6923076923077) internal successors, (1530), 13 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:24:57,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:24:57,709 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:24:57,709 INFO L175 Difference]: Start difference. First operand has 140 places, 129 transitions, 270 flow. Second operand 13 states and 1530 transitions. [2022-09-20 22:24:57,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 275 transitions, 944 flow [2022-09-20 22:24:57,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 275 transitions, 918 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 22:24:57,717 INFO L231 Difference]: Finished difference. Result has 162 places, 124 transitions, 370 flow [2022-09-20 22:24:57,717 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=370, PETRI_PLACES=162, PETRI_TRANSITIONS=124} [2022-09-20 22:24:57,718 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 18 predicate places. [2022-09-20 22:24:57,718 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 124 transitions, 370 flow [2022-09-20 22:24:57,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.28571428571429) internal successors, (744), 7 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:24:57,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:24:57,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:24:57,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 22:24:57,721 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 22:24:57,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:24:57,722 INFO L85 PathProgramCache]: Analyzing trace with hash -1504018406, now seen corresponding path program 1 times [2022-09-20 22:24:57,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:24:57,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068184518] [2022-09-20 22:24:57,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:24:57,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:24:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:24:57,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:24:57,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:24:57,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068184518] [2022-09-20 22:24:57,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068184518] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:24:57,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:24:57,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:24:57,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834650871] [2022-09-20 22:24:57,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:24:57,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:24:57,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:24:57,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:24:57,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:24:57,972 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 137 [2022-09-20 22:24:57,974 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 124 transitions, 370 flow. Second operand has 7 states, 7 states have (on average 106.42857142857143) internal successors, (745), 7 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:24:57,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:24:57,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 137 [2022-09-20 22:24:57,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:25:01,086 INFO L130 PetriNetUnfolder]: 10158/16559 cut-off events. [2022-09-20 22:25:01,086 INFO L131 PetriNetUnfolder]: For 29818/29834 co-relation queries the response was YES. [2022-09-20 22:25:01,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51627 conditions, 16559 events. 10158/16559 cut-off events. For 29818/29834 co-relation queries the response was YES. Maximal size of possible extension queue 827. Compared 121165 event pairs, 1334 based on Foata normal form. 368/16691 useless extension candidates. Maximal degree in co-relation 51551. Up to 4924 conditions per place. [2022-09-20 22:25:01,380 INFO L137 encePairwiseOnDemand]: 125/137 looper letters, 54 selfloop transitions, 10 changer transitions 118/269 dead transitions. [2022-09-20 22:25:01,380 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 269 transitions, 1474 flow [2022-09-20 22:25:01,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 22:25:01,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 22:25:01,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1512 transitions. [2022-09-20 22:25:01,394 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8489612577203818 [2022-09-20 22:25:01,394 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1512 transitions. [2022-09-20 22:25:01,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1512 transitions. [2022-09-20 22:25:01,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:25:01,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1512 transitions. [2022-09-20 22:25:01,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 116.3076923076923) internal successors, (1512), 13 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:01,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:01,404 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:01,404 INFO L175 Difference]: Start difference. First operand has 162 places, 124 transitions, 370 flow. Second operand 13 states and 1512 transitions. [2022-09-20 22:25:01,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 269 transitions, 1474 flow [2022-09-20 22:25:01,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 269 transitions, 1450 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-09-20 22:25:01,523 INFO L231 Difference]: Finished difference. Result has 160 places, 130 transitions, 496 flow [2022-09-20 22:25:01,524 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=496, PETRI_PLACES=160, PETRI_TRANSITIONS=130} [2022-09-20 22:25:01,524 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 16 predicate places. [2022-09-20 22:25:01,524 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 130 transitions, 496 flow [2022-09-20 22:25:01,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.42857142857143) internal successors, (745), 7 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:01,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:25:01,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:25:01,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 22:25:01,526 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 22:25:01,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:25:01,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1799344392, now seen corresponding path program 1 times [2022-09-20 22:25:01,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:25:01,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8122851] [2022-09-20 22:25:01,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:25:01,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:25:01,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:25:01,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:25:01,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:25:01,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8122851] [2022-09-20 22:25:01,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8122851] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:25:01,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:25:01,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:25:01,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408156846] [2022-09-20 22:25:01,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:25:01,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:25:01,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:25:01,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:25:01,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:25:01,675 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 137 [2022-09-20 22:25:01,676 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 130 transitions, 496 flow. Second operand has 7 states, 7 states have (on average 106.57142857142857) internal successors, (746), 7 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:01,676 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:25:01,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 137 [2022-09-20 22:25:01,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:25:04,480 INFO L130 PetriNetUnfolder]: 8555/15047 cut-off events. [2022-09-20 22:25:04,480 INFO L131 PetriNetUnfolder]: For 50861/51230 co-relation queries the response was YES. [2022-09-20 22:25:04,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51715 conditions, 15047 events. 8555/15047 cut-off events. For 50861/51230 co-relation queries the response was YES. Maximal size of possible extension queue 731. Compared 117794 event pairs, 1394 based on Foata normal form. 290/14854 useless extension candidates. Maximal degree in co-relation 51628. Up to 4791 conditions per place. [2022-09-20 22:25:04,662 INFO L137 encePairwiseOnDemand]: 122/137 looper letters, 54 selfloop transitions, 24 changer transitions 106/271 dead transitions. [2022-09-20 22:25:04,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 271 transitions, 1796 flow [2022-09-20 22:25:04,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 22:25:04,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 22:25:04,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1510 transitions. [2022-09-20 22:25:04,835 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8478382930937676 [2022-09-20 22:25:04,835 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1510 transitions. [2022-09-20 22:25:04,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1510 transitions. [2022-09-20 22:25:04,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:25:04,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1510 transitions. [2022-09-20 22:25:04,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 116.15384615384616) internal successors, (1510), 13 states have internal predecessors, (1510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:04,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:04,856 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:04,856 INFO L175 Difference]: Start difference. First operand has 160 places, 130 transitions, 496 flow. Second operand 13 states and 1510 transitions. [2022-09-20 22:25:04,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 271 transitions, 1796 flow [2022-09-20 22:25:05,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 271 transitions, 1719 flow, removed 36 selfloop flow, removed 4 redundant places. [2022-09-20 22:25:05,031 INFO L231 Difference]: Finished difference. Result has 171 places, 144 transitions, 782 flow [2022-09-20 22:25:05,031 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=782, PETRI_PLACES=171, PETRI_TRANSITIONS=144} [2022-09-20 22:25:05,032 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 27 predicate places. [2022-09-20 22:25:05,032 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 144 transitions, 782 flow [2022-09-20 22:25:05,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.57142857142857) internal successors, (746), 7 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:05,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:25:05,033 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:25:05,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 22:25:05,033 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 22:25:05,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:25:05,034 INFO L85 PathProgramCache]: Analyzing trace with hash -810611399, now seen corresponding path program 1 times [2022-09-20 22:25:05,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:25:05,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948830673] [2022-09-20 22:25:05,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:25:05,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:25:05,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:25:05,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:25:05,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:25:05,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948830673] [2022-09-20 22:25:05,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948830673] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:25:05,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:25:05,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:25:05,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689191645] [2022-09-20 22:25:05,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:25:05,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:25:05,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:25:05,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:25:05,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:25:05,134 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 137 [2022-09-20 22:25:05,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 144 transitions, 782 flow. Second operand has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:05,135 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:25:05,135 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 137 [2022-09-20 22:25:05,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:25:08,086 INFO L130 PetriNetUnfolder]: 9343/16657 cut-off events. [2022-09-20 22:25:08,087 INFO L131 PetriNetUnfolder]: For 76976/77067 co-relation queries the response was YES. [2022-09-20 22:25:08,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61134 conditions, 16657 events. 9343/16657 cut-off events. For 76976/77067 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 133747 event pairs, 2038 based on Foata normal form. 271/16448 useless extension candidates. Maximal degree in co-relation 61031. Up to 4348 conditions per place. [2022-09-20 22:25:08,231 INFO L137 encePairwiseOnDemand]: 123/137 looper letters, 56 selfloop transitions, 33 changer transitions 92/268 dead transitions. [2022-09-20 22:25:08,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 268 transitions, 2057 flow [2022-09-20 22:25:08,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 22:25:08,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 22:25:08,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1498 transitions. [2022-09-20 22:25:08,235 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.841100505334082 [2022-09-20 22:25:08,235 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1498 transitions. [2022-09-20 22:25:08,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1498 transitions. [2022-09-20 22:25:08,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:25:08,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1498 transitions. [2022-09-20 22:25:08,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 115.23076923076923) internal successors, (1498), 13 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:08,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:08,243 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:08,243 INFO L175 Difference]: Start difference. First operand has 171 places, 144 transitions, 782 flow. Second operand 13 states and 1498 transitions. [2022-09-20 22:25:08,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 268 transitions, 2057 flow [2022-09-20 22:25:08,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 268 transitions, 1929 flow, removed 64 selfloop flow, removed 6 redundant places. [2022-09-20 22:25:08,534 INFO L231 Difference]: Finished difference. Result has 180 places, 150 transitions, 980 flow [2022-09-20 22:25:08,534 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=980, PETRI_PLACES=180, PETRI_TRANSITIONS=150} [2022-09-20 22:25:08,535 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 36 predicate places. [2022-09-20 22:25:08,535 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 150 transitions, 980 flow [2022-09-20 22:25:08,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 106.71428571428571) internal successors, (747), 7 states have internal predecessors, (747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:08,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:25:08,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:25:08,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 22:25:08,536 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 22:25:08,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:25:08,537 INFO L85 PathProgramCache]: Analyzing trace with hash -392151973, now seen corresponding path program 1 times [2022-09-20 22:25:08,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:25:08,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471847551] [2022-09-20 22:25:08,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:25:08,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:25:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:25:08,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:25:08,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:25:08,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471847551] [2022-09-20 22:25:08,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471847551] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:25:08,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:25:08,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 22:25:08,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150067638] [2022-09-20 22:25:08,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:25:08,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 22:25:08,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:25:08,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 22:25:08,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-20 22:25:08,625 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 137 [2022-09-20 22:25:08,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 150 transitions, 980 flow. Second operand has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:08,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:25:08,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 137 [2022-09-20 22:25:08,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:25:17,727 INFO L130 PetriNetUnfolder]: 29329/51397 cut-off events. [2022-09-20 22:25:17,727 INFO L131 PetriNetUnfolder]: For 128103/147817 co-relation queries the response was YES. [2022-09-20 22:25:18,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128632 conditions, 51397 events. 29329/51397 cut-off events. For 128103/147817 co-relation queries the response was YES. Maximal size of possible extension queue 2902. Compared 491494 event pairs, 3162 based on Foata normal form. 448/49398 useless extension candidates. Maximal degree in co-relation 128521. Up to 16642 conditions per place. [2022-09-20 22:25:18,519 INFO L137 encePairwiseOnDemand]: 126/137 looper letters, 109 selfloop transitions, 20 changer transitions 0/253 dead transitions. [2022-09-20 22:25:18,519 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 253 transitions, 1898 flow [2022-09-20 22:25:18,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 22:25:18,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 22:25:18,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1207 transitions. [2022-09-20 22:25:18,523 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.881021897810219 [2022-09-20 22:25:18,523 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1207 transitions. [2022-09-20 22:25:18,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1207 transitions. [2022-09-20 22:25:18,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:25:18,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1207 transitions. [2022-09-20 22:25:18,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 120.7) internal successors, (1207), 10 states have internal predecessors, (1207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:18,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 137.0) internal successors, (1507), 11 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:18,531 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 137.0) internal successors, (1507), 11 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:18,531 INFO L175 Difference]: Start difference. First operand has 180 places, 150 transitions, 980 flow. Second operand 10 states and 1207 transitions. [2022-09-20 22:25:18,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 253 transitions, 1898 flow [2022-09-20 22:25:18,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 253 transitions, 1816 flow, removed 41 selfloop flow, removed 12 redundant places. [2022-09-20 22:25:18,714 INFO L231 Difference]: Finished difference. Result has 174 places, 168 transitions, 1083 flow [2022-09-20 22:25:18,715 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=940, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1083, PETRI_PLACES=174, PETRI_TRANSITIONS=168} [2022-09-20 22:25:18,715 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 30 predicate places. [2022-09-20 22:25:18,716 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 168 transitions, 1083 flow [2022-09-20 22:25:18,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.0) internal successors, (672), 6 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:18,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:25:18,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:25:18,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 22:25:18,717 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 22:25:18,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:25:18,717 INFO L85 PathProgramCache]: Analyzing trace with hash 841358037, now seen corresponding path program 1 times [2022-09-20 22:25:18,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:25:18,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312216234] [2022-09-20 22:25:18,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:25:18,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:25:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:25:18,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:25:18,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:25:18,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312216234] [2022-09-20 22:25:18,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312216234] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:25:18,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:25:18,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 22:25:18,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663915547] [2022-09-20 22:25:18,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:25:18,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 22:25:18,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:25:18,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 22:25:18,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-20 22:25:18,857 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 137 [2022-09-20 22:25:18,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 168 transitions, 1083 flow. Second operand has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:18,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:25:18,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 137 [2022-09-20 22:25:18,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:25:23,793 INFO L130 PetriNetUnfolder]: 10040/28594 cut-off events. [2022-09-20 22:25:23,793 INFO L131 PetriNetUnfolder]: For 75646/80564 co-relation queries the response was YES. [2022-09-20 22:25:24,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83956 conditions, 28594 events. 10040/28594 cut-off events. For 75646/80564 co-relation queries the response was YES. Maximal size of possible extension queue 1937. Compared 373871 event pairs, 4010 based on Foata normal form. 661/27227 useless extension candidates. Maximal degree in co-relation 83848. Up to 5577 conditions per place. [2022-09-20 22:25:24,294 INFO L137 encePairwiseOnDemand]: 131/137 looper letters, 69 selfloop transitions, 23 changer transitions 6/228 dead transitions. [2022-09-20 22:25:24,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 228 transitions, 1673 flow [2022-09-20 22:25:24,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 22:25:24,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 22:25:24,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1084 transitions. [2022-09-20 22:25:24,296 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8791565287915653 [2022-09-20 22:25:24,296 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1084 transitions. [2022-09-20 22:25:24,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1084 transitions. [2022-09-20 22:25:24,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:25:24,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1084 transitions. [2022-09-20 22:25:24,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 120.44444444444444) internal successors, (1084), 9 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:24,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:24,301 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 137.0) internal successors, (1370), 10 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:24,302 INFO L175 Difference]: Start difference. First operand has 174 places, 168 transitions, 1083 flow. Second operand 9 states and 1084 transitions. [2022-09-20 22:25:24,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 228 transitions, 1673 flow [2022-09-20 22:25:24,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 228 transitions, 1634 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 22:25:24,947 INFO L231 Difference]: Finished difference. Result has 187 places, 176 transitions, 1206 flow [2022-09-20 22:25:24,947 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=1051, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1206, PETRI_PLACES=187, PETRI_TRANSITIONS=176} [2022-09-20 22:25:24,948 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 43 predicate places. [2022-09-20 22:25:24,948 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 176 transitions, 1206 flow [2022-09-20 22:25:24,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.5) internal successors, (687), 6 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:24,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:25:24,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:25:24,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 22:25:24,949 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 22:25:24,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:25:24,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1640474187, now seen corresponding path program 1 times [2022-09-20 22:25:24,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:25:24,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296819238] [2022-09-20 22:25:24,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:25:24,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:25:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:25:25,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:25:25,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:25:25,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296819238] [2022-09-20 22:25:25,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296819238] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:25:25,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:25:25,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:25:25,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524931039] [2022-09-20 22:25:25,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:25:25,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:25:25,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:25:25,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:25:25,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:25:25,069 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 137 [2022-09-20 22:25:25,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 176 transitions, 1206 flow. Second operand has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:25,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:25:25,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 137 [2022-09-20 22:25:25,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:25:38,960 INFO L130 PetriNetUnfolder]: 38849/70581 cut-off events. [2022-09-20 22:25:38,960 INFO L131 PetriNetUnfolder]: For 200343/224425 co-relation queries the response was YES. [2022-09-20 22:25:40,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230557 conditions, 70581 events. 38849/70581 cut-off events. For 200343/224425 co-relation queries the response was YES. Maximal size of possible extension queue 4255. Compared 742859 event pairs, 1630 based on Foata normal form. 1563/70556 useless extension candidates. Maximal degree in co-relation 230444. Up to 15253 conditions per place. [2022-09-20 22:25:40,199 INFO L137 encePairwiseOnDemand]: 126/137 looper letters, 138 selfloop transitions, 38 changer transitions 0/308 dead transitions. [2022-09-20 22:25:40,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 308 transitions, 2513 flow [2022-09-20 22:25:40,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 22:25:40,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 22:25:40,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1574 transitions. [2022-09-20 22:25:40,203 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8837731611454239 [2022-09-20 22:25:40,203 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1574 transitions. [2022-09-20 22:25:40,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1574 transitions. [2022-09-20 22:25:40,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:25:40,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1574 transitions. [2022-09-20 22:25:40,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 121.07692307692308) internal successors, (1574), 13 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:40,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:40,209 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 137.0) internal successors, (1918), 14 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:40,210 INFO L175 Difference]: Start difference. First operand has 187 places, 176 transitions, 1206 flow. Second operand 13 states and 1574 transitions. [2022-09-20 22:25:40,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 308 transitions, 2513 flow [2022-09-20 22:25:43,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 308 transitions, 2474 flow, removed 12 selfloop flow, removed 1 redundant places. [2022-09-20 22:25:43,745 INFO L231 Difference]: Finished difference. Result has 204 places, 196 transitions, 1460 flow [2022-09-20 22:25:43,746 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=1167, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1460, PETRI_PLACES=204, PETRI_TRANSITIONS=196} [2022-09-20 22:25:43,746 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 60 predicate places. [2022-09-20 22:25:43,746 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 196 transitions, 1460 flow [2022-09-20 22:25:43,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 112.0) internal successors, (784), 7 states have internal predecessors, (784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:43,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:25:43,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:25:43,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 22:25:43,747 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 22:25:43,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:25:43,748 INFO L85 PathProgramCache]: Analyzing trace with hash -411284996, now seen corresponding path program 1 times [2022-09-20 22:25:43,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:25:43,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053731270] [2022-09-20 22:25:43,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:25:43,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:25:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:25:43,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:25:43,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:25:43,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053731270] [2022-09-20 22:25:43,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053731270] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:25:43,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:25:43,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 22:25:43,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197574736] [2022-09-20 22:25:43,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:25:43,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 22:25:43,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:25:43,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 22:25:43,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-09-20 22:25:43,867 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 137 [2022-09-20 22:25:43,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 196 transitions, 1460 flow. Second operand has 7 states, 7 states have (on average 105.57142857142857) internal successors, (739), 7 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:43,868 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:25:43,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 137 [2022-09-20 22:25:43,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 22:25:50,601 INFO L130 PetriNetUnfolder]: 11554/35908 cut-off events. [2022-09-20 22:25:50,602 INFO L131 PetriNetUnfolder]: For 160278/183741 co-relation queries the response was YES. [2022-09-20 22:25:51,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133568 conditions, 35908 events. 11554/35908 cut-off events. For 160278/183741 co-relation queries the response was YES. Maximal size of possible extension queue 3888. Compared 518812 event pairs, 810 based on Foata normal form. 615/34139 useless extension candidates. Maximal degree in co-relation 133442. Up to 8581 conditions per place. [2022-09-20 22:25:51,587 INFO L137 encePairwiseOnDemand]: 122/137 looper letters, 112 selfloop transitions, 75 changer transitions 27/337 dead transitions. [2022-09-20 22:25:51,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 337 transitions, 3152 flow [2022-09-20 22:25:51,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 22:25:51,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 22:25:51,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1255 transitions. [2022-09-20 22:25:51,591 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8327803583278036 [2022-09-20 22:25:51,591 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1255 transitions. [2022-09-20 22:25:51,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1255 transitions. [2022-09-20 22:25:51,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 22:25:51,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1255 transitions. [2022-09-20 22:25:51,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 114.0909090909091) internal successors, (1255), 11 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:51,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 137.0) internal successors, (1644), 12 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:51,597 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 137.0) internal successors, (1644), 12 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:51,597 INFO L175 Difference]: Start difference. First operand has 204 places, 196 transitions, 1460 flow. Second operand 11 states and 1255 transitions. [2022-09-20 22:25:51,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 337 transitions, 3152 flow [2022-09-20 22:25:59,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 337 transitions, 3045 flow, removed 44 selfloop flow, removed 7 redundant places. [2022-09-20 22:25:59,442 INFO L231 Difference]: Finished difference. Result has 216 places, 245 transitions, 2330 flow [2022-09-20 22:25:59,442 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=137, PETRI_DIFFERENCE_MINUEND_FLOW=1359, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2330, PETRI_PLACES=216, PETRI_TRANSITIONS=245} [2022-09-20 22:25:59,443 INFO L287 CegarLoopForPetriNet]: 144 programPoint places, 72 predicate places. [2022-09-20 22:25:59,443 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 245 transitions, 2330 flow [2022-09-20 22:25:59,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 105.57142857142857) internal successors, (739), 7 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:59,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 22:25:59,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 22:25:59,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-20 22:25:59,444 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-09-20 22:25:59,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 22:25:59,444 INFO L85 PathProgramCache]: Analyzing trace with hash -538696792, now seen corresponding path program 2 times [2022-09-20 22:25:59,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 22:25:59,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660430088] [2022-09-20 22:25:59,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 22:25:59,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 22:25:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 22:25:59,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 22:25:59,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 22:25:59,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660430088] [2022-09-20 22:25:59,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660430088] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 22:25:59,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 22:25:59,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 22:25:59,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918544114] [2022-09-20 22:25:59,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 22:25:59,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 22:25:59,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 22:25:59,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 22:25:59,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-09-20 22:25:59,542 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 137 [2022-09-20 22:25:59,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 245 transitions, 2330 flow. Second operand has 8 states, 8 states have (on average 112.0) internal successors, (896), 8 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 22:25:59,543 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 22:25:59,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 137 [2022-09-20 22:25:59,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand