/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 18:41:40,770 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 18:41:40,837 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 18:41:40,840 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 18:41:40,841 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 18:41:40,841 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 18:41:40,841 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 18:41:40,863 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 18:41:40,864 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 18:41:40,866 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 18:41:40,867 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 18:41:40,867 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 18:41:40,867 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 18:41:40,868 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 18:41:40,868 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 18:41:40,869 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 18:41:40,869 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 18:41:40,869 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 18:41:40,869 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 18:41:40,869 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 18:41:40,869 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 18:41:40,870 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 18:41:40,870 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 18:41:40,870 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 18:41:40,870 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 18:41:40,871 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 18:41:40,871 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 18:41:40,872 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 18:41:40,872 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 18:41:40,872 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 18:41:40,872 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:41:40,873 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 18:41:40,873 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 18:41:40,873 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 18:41:40,873 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 18:41:40,873 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 18:41:40,873 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 18:41:40,873 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 18:41:40,873 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 18:41:40,873 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 18:41:40,874 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 18:41:40,874 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 18:41:41,057 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 18:41:41,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 18:41:41,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 18:41:41,078 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 18:41:41,079 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 18:41:41,080 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt_bound2.i [2023-08-03 18:41:42,085 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 18:41:42,310 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 18:41:42,311 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt_bound2.i [2023-08-03 18:41:42,343 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a77e516e3/8e12c73ea6e84a74a3e2b87977c07456/FLAG5eabfdae5 [2023-08-03 18:41:42,354 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a77e516e3/8e12c73ea6e84a74a3e2b87977c07456 [2023-08-03 18:41:42,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 18:41:42,356 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 18:41:42,357 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 18:41:42,357 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 18:41:42,364 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 18:41:42,364 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:41:42" (1/1) ... [2023-08-03 18:41:42,365 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2774dd49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:41:42, skipping insertion in model container [2023-08-03 18:41:42,365 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:41:42" (1/1) ... [2023-08-03 18:41:42,433 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 18:41:42,532 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt_bound2.i[1039,1052] [2023-08-03 18:41:42,655 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:41:42,667 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 18:41:42,675 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt_bound2.i[1039,1052] [2023-08-03 18:41:42,693 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-03 18:41:42,694 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-03 18:41:42,753 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:41:42,782 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:41:42,783 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:41:42,787 INFO L206 MainTranslator]: Completed translation [2023-08-03 18:41:42,788 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:41:42 WrapperNode [2023-08-03 18:41:42,788 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 18:41:42,789 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 18:41:42,789 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 18:41:42,789 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 18:41:42,793 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:41:42" (1/1) ... [2023-08-03 18:41:42,821 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:41:42" (1/1) ... [2023-08-03 18:41:42,852 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 169 [2023-08-03 18:41:42,853 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 18:41:42,853 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 18:41:42,853 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 18:41:42,853 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 18:41:42,862 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:41:42" (1/1) ... [2023-08-03 18:41:42,862 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:41:42" (1/1) ... [2023-08-03 18:41:42,874 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:41:42" (1/1) ... [2023-08-03 18:41:42,874 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:41:42" (1/1) ... [2023-08-03 18:41:42,881 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:41:42" (1/1) ... [2023-08-03 18:41:42,884 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:41:42" (1/1) ... [2023-08-03 18:41:42,901 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:41:42" (1/1) ... [2023-08-03 18:41:42,902 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:41:42" (1/1) ... [2023-08-03 18:41:42,905 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 18:41:42,906 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 18:41:42,906 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 18:41:42,906 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 18:41:42,907 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:41:42" (1/1) ... [2023-08-03 18:41:42,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:41:42,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:41:42,966 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) [2023-08-03 18:41:42,984 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 [2023-08-03 18:41:42,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 18:41:42,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 18:41:42,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 18:41:42,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 18:41:42,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 18:41:42,994 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 18:41:42,994 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 18:41:42,994 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 18:41:42,994 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 18:41:42,995 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 18:41:42,995 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 18:41:42,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 18:41:42,995 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 18:41:42,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 18:41:42,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 18:41:42,996 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 18:41:43,121 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 18:41:43,123 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 18:41:43,450 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 18:41:43,553 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 18:41:43,553 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 18:41:43,555 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:41:43 BoogieIcfgContainer [2023-08-03 18:41:43,555 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 18:41:43,557 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 18:41:43,557 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 18:41:43,559 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 18:41:43,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 06:41:42" (1/3) ... [2023-08-03 18:41:43,561 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c291779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:41:43, skipping insertion in model container [2023-08-03 18:41:43,561 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:41:42" (2/3) ... [2023-08-03 18:41:43,561 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c291779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:41:43, skipping insertion in model container [2023-08-03 18:41:43,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:41:43" (3/3) ... [2023-08-03 18:41:43,562 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe023_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt_bound2.i [2023-08-03 18:41:43,568 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 18:41:43,574 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 18:41:43,574 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 18:41:43,574 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 18:41:43,605 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:41:43,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 130 transitions, 275 flow [2023-08-03 18:41:43,709 INFO L124 PetriNetUnfolderBase]: 30/450 cut-off events. [2023-08-03 18:41:43,709 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:41:43,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 450 events. 30/450 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2002 event pairs, 0 based on Foata normal form. 0/396 useless extension candidates. Maximal degree in co-relation 271. Up to 16 conditions per place. [2023-08-03 18:41:43,717 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 130 transitions, 275 flow [2023-08-03 18:41:43,721 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 130 transitions, 275 flow [2023-08-03 18:41:43,723 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:41:43,730 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 130 transitions, 275 flow [2023-08-03 18:41:43,732 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 130 transitions, 275 flow [2023-08-03 18:41:43,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 130 transitions, 275 flow [2023-08-03 18:41:43,792 INFO L124 PetriNetUnfolderBase]: 30/450 cut-off events. [2023-08-03 18:41:43,792 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:41:43,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 450 events. 30/450 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2002 event pairs, 0 based on Foata normal form. 0/396 useless extension candidates. Maximal degree in co-relation 271. Up to 16 conditions per place. [2023-08-03 18:41:43,799 INFO L119 LiptonReduction]: Number of co-enabled transitions 2866 [2023-08-03 18:41:46,798 INFO L134 LiptonReduction]: Checked pairs total: 6976 [2023-08-03 18:41:46,798 INFO L136 LiptonReduction]: Total number of compositions: 112 [2023-08-03 18:41:46,808 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:41:46,812 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=true, 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;@57c2fa5b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:41:46,812 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-03 18:41:46,815 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:41:46,815 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2023-08-03 18:41:46,815 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:41:46,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:41:46,816 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 18:41:46,816 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 18:41:46,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:41:46,819 INFO L85 PathProgramCache]: Analyzing trace with hash 612690925, now seen corresponding path program 1 times [2023-08-03 18:41:46,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:41:46,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116712895] [2023-08-03 18:41:46,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:41:46,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:41:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:41:47,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:41:47,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:41:47,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116712895] [2023-08-03 18:41:47,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116712895] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:41:47,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:41:47,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:41:47,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240842431] [2023-08-03 18:41:47,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:41:47,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:41:47,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:41:47,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:41:47,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:41:47,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 242 [2023-08-03 18:41:47,056 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 33 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:41:47,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:41:47,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 242 [2023-08-03 18:41:47,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:41:47,667 INFO L124 PetriNetUnfolderBase]: 3221/4915 cut-off events. [2023-08-03 18:41:47,668 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 18:41:47,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9915 conditions, 4915 events. 3221/4915 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 26106 event pairs, 1896 based on Foata normal form. 0/4171 useless extension candidates. Maximal degree in co-relation 9890. Up to 4812 conditions per place. [2023-08-03 18:41:47,689 INFO L140 encePairwiseOnDemand]: 239/242 looper letters, 33 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2023-08-03 18:41:47,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 39 transitions, 163 flow [2023-08-03 18:41:47,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:41:47,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:41:47,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2023-08-03 18:41:47,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49173553719008267 [2023-08-03 18:41:47,702 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2023-08-03 18:41:47,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2023-08-03 18:41:47,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:41:47,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2023-08-03 18:41:47,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:41:47,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:41:47,711 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 242.0) internal successors, (968), 4 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:41:47,713 INFO L175 Difference]: Start difference. First operand has 40 places, 33 transitions, 81 flow. Second operand 3 states and 357 transitions. [2023-08-03 18:41:47,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 39 transitions, 163 flow [2023-08-03 18:41:47,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 39 transitions, 163 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 18:41:47,716 INFO L231 Difference]: Finished difference. Result has 43 places, 33 transitions, 89 flow [2023-08-03 18:41:47,717 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=242, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=43, PETRI_TRANSITIONS=33} [2023-08-03 18:41:47,719 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2023-08-03 18:41:47,719 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 89 flow [2023-08-03 18:41:47,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:41:47,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:41:47,720 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 18:41:47,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 18:41:47,720 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 18:41:47,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:41:47,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1809377670, now seen corresponding path program 1 times [2023-08-03 18:41:47,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:41:47,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977853669] [2023-08-03 18:41:47,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:41:47,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:41:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:41:47,751 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 18:41:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:41:47,774 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 18:41:47,774 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 18:41:47,775 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-08-03 18:41:47,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-03 18:41:47,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-03 18:41:47,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-03 18:41:47,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-03 18:41:47,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-03 18:41:47,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 18:41:47,777 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 18:41:47,778 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 18:41:47,779 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 18:41:47,802 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:41:47,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 156 transitions, 348 flow [2023-08-03 18:41:47,916 INFO L124 PetriNetUnfolderBase]: 93/1383 cut-off events. [2023-08-03 18:41:47,916 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 18:41:47,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1481 conditions, 1383 events. 93/1383 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9537 event pairs, 0 based on Foata normal form. 0/1218 useless extension candidates. Maximal degree in co-relation 1006. Up to 54 conditions per place. [2023-08-03 18:41:47,921 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 156 transitions, 348 flow [2023-08-03 18:41:47,924 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 156 transitions, 348 flow [2023-08-03 18:41:47,924 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:41:47,925 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 156 transitions, 348 flow [2023-08-03 18:41:47,925 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 156 transitions, 348 flow [2023-08-03 18:41:47,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 156 transitions, 348 flow [2023-08-03 18:41:48,028 INFO L124 PetriNetUnfolderBase]: 93/1383 cut-off events. [2023-08-03 18:41:48,028 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 18:41:48,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1481 conditions, 1383 events. 93/1383 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9537 event pairs, 0 based on Foata normal form. 0/1218 useless extension candidates. Maximal degree in co-relation 1006. Up to 54 conditions per place. [2023-08-03 18:41:48,054 INFO L119 LiptonReduction]: Number of co-enabled transitions 6932 [2023-08-03 18:41:51,120 INFO L134 LiptonReduction]: Checked pairs total: 21045 [2023-08-03 18:41:51,120 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-08-03 18:41:51,122 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:41:51,123 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=true, 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;@57c2fa5b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:41:51,123 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-03 18:41:51,124 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:41:51,124 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-08-03 18:41:51,124 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:41:51,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:41:51,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 18:41:51,125 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 18:41:51,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:41:51,125 INFO L85 PathProgramCache]: Analyzing trace with hash 900021955, now seen corresponding path program 1 times [2023-08-03 18:41:51,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:41:51,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068876311] [2023-08-03 18:41:51,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:41:51,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:41:51,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:41:51,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:41:51,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:41:51,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068876311] [2023-08-03 18:41:51,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068876311] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:41:51,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:41:51,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:41:51,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098455362] [2023-08-03 18:41:51,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:41:51,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:41:51,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:41:51,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:41:51,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:41:51,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 275 [2023-08-03 18:41:51,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 53 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 123.66666666666667) internal successors, (371), 3 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:41:51,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:41:51,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 275 [2023-08-03 18:41:51,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand