/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_lazy01_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 19:08:18,719 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 19:08:18,792 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 19:08:18,796 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 19:08:18,797 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 19:08:18,797 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 19:08:18,798 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 19:08:18,824 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 19:08:18,824 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 19:08:18,825 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 19:08:18,825 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 19:08:18,825 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 19:08:18,826 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 19:08:18,826 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 19:08:18,827 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 19:08:18,827 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 19:08:18,827 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 19:08:18,828 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 19:08:18,828 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 19:08:18,828 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 19:08:18,828 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 19:08:18,829 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 19:08:18,829 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 19:08:18,829 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 19:08:18,833 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 19:08:18,834 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 19:08:18,834 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 19:08:18,834 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 19:08:18,834 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 19:08:18,835 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 19:08:18,836 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:08:18,836 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 19:08:18,836 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 19:08:18,836 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 19:08:18,836 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 19:08:18,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 19:08:18,837 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 19:08:18,837 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 19:08:18,837 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 19:08:18,837 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 19:08:18,837 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 19:08:18,838 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 19:08:19,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 19:08:19,086 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 19:08:19,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 19:08:19,089 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 19:08:19,089 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 19:08:19,091 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread_lazy01_bound2.i [2023-08-03 19:08:20,227 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 19:08:20,448 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 19:08:20,448 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread_lazy01_bound2.i [2023-08-03 19:08:20,461 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd3caf568/c72bff6797134948a782106996ba249e/FLAGf7112a311 [2023-08-03 19:08:20,472 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd3caf568/c72bff6797134948a782106996ba249e [2023-08-03 19:08:20,474 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 19:08:20,475 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 19:08:20,476 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 19:08:20,476 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 19:08:20,479 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 19:08:20,479 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:08:20" (1/1) ... [2023-08-03 19:08:20,480 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57978483 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:08:20, skipping insertion in model container [2023-08-03 19:08:20,480 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 07:08:20" (1/1) ... [2023-08-03 19:08:20,518 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 19:08:20,776 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_lazy01_bound2.i[31042,31055] [2023-08-03 19:08:20,784 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:08:20,794 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 19:08:20,810 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [257] [2023-08-03 19:08:20,811 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [257] [2023-08-03 19:08:20,832 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_lazy01_bound2.i[31042,31055] [2023-08-03 19:08:20,838 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 19:08:20,864 INFO L206 MainTranslator]: Completed translation [2023-08-03 19:08:20,864 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:08:20 WrapperNode [2023-08-03 19:08:20,865 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 19:08:20,865 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 19:08:20,865 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 19:08:20,865 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 19:08:20,871 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:08:20" (1/1) ... [2023-08-03 19:08:20,887 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:08:20" (1/1) ... [2023-08-03 19:08:20,908 INFO L138 Inliner]: procedures = 169, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 110 [2023-08-03 19:08:20,910 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 19:08:20,911 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 19:08:20,911 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 19:08:20,911 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 19:08:20,918 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:08:20" (1/1) ... [2023-08-03 19:08:20,918 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:08:20" (1/1) ... [2023-08-03 19:08:20,920 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:08:20" (1/1) ... [2023-08-03 19:08:20,921 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:08:20" (1/1) ... [2023-08-03 19:08:20,926 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:08:20" (1/1) ... [2023-08-03 19:08:20,930 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:08:20" (1/1) ... [2023-08-03 19:08:20,931 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:08:20" (1/1) ... [2023-08-03 19:08:20,932 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:08:20" (1/1) ... [2023-08-03 19:08:20,935 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 19:08:20,935 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 19:08:20,936 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 19:08:20,936 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 19:08:20,936 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:08:20" (1/1) ... [2023-08-03 19:08:20,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 19:08:20,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:08:20,969 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 19:08:20,994 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 19:08:21,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 19:08:21,016 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-03 19:08:21,016 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-03 19:08:21,016 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-03 19:08:21,016 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-03 19:08:21,016 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-03 19:08:21,016 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-03 19:08:21,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 19:08:21,018 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 19:08:21,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 19:08:21,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 19:08:21,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 19:08:21,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 19:08:21,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 19:08:21,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 19:08:21,021 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 19:08:21,137 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 19:08:21,139 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 19:08:21,373 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 19:08:21,379 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 19:08:21,380 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-03 19:08:21,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:08:21 BoogieIcfgContainer [2023-08-03 19:08:21,382 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 19:08:21,384 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 19:08:21,384 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 19:08:21,386 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 19:08:21,386 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 07:08:20" (1/3) ... [2023-08-03 19:08:21,387 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c41c816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:08:21, skipping insertion in model container [2023-08-03 19:08:21,387 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 07:08:20" (2/3) ... [2023-08-03 19:08:21,387 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c41c816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 07:08:21, skipping insertion in model container [2023-08-03 19:08:21,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 07:08:21" (3/3) ... [2023-08-03 19:08:21,389 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread_lazy01_bound2.i [2023-08-03 19:08:21,396 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 19:08:21,402 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 19:08:21,402 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 19:08:21,402 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 19:08:21,472 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-03 19:08:21,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 135 transitions, 312 flow [2023-08-03 19:08:21,633 INFO L124 PetriNetUnfolderBase]: 78/540 cut-off events. [2023-08-03 19:08:21,634 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-03 19:08:21,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 601 conditions, 540 events. 78/540 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2816 event pairs, 0 based on Foata normal form. 0/456 useless extension candidates. Maximal degree in co-relation 285. Up to 16 conditions per place. [2023-08-03 19:08:21,651 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 135 transitions, 312 flow [2023-08-03 19:08:21,659 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 132 transitions, 297 flow [2023-08-03 19:08:21,661 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:08:21,668 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 132 transitions, 297 flow [2023-08-03 19:08:21,674 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 132 transitions, 297 flow [2023-08-03 19:08:21,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 132 transitions, 297 flow [2023-08-03 19:08:21,745 INFO L124 PetriNetUnfolderBase]: 66/516 cut-off events. [2023-08-03 19:08:21,745 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-08-03 19:08:21,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 565 conditions, 516 events. 66/516 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2703 event pairs, 0 based on Foata normal form. 0/432 useless extension candidates. Maximal degree in co-relation 297. Up to 16 conditions per place. [2023-08-03 19:08:21,754 INFO L119 LiptonReduction]: Number of co-enabled transitions 3998 [2023-08-03 19:08:24,409 INFO L134 LiptonReduction]: Checked pairs total: 9209 [2023-08-03 19:08:24,409 INFO L136 LiptonReduction]: Total number of compositions: 95 [2023-08-03 19:08:24,421 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:08:24,426 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;@21e05f0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:08:24,426 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 19:08:24,431 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:08:24,431 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2023-08-03 19:08:24,431 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 19:08:24,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:08:24,432 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 19:08:24,432 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 19:08:24,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:08:24,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1266645045, now seen corresponding path program 1 times [2023-08-03 19:08:24,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:08:24,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678652304] [2023-08-03 19:08:24,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:08:24,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:08:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:08:24,549 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 19:08:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 19:08:24,620 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 19:08:24,621 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 19:08:24,622 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-08-03 19:08:24,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-03 19:08:24,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-03 19:08:24,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-03 19:08:24,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-03 19:08:24,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 19:08:24,625 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 19:08:24,630 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 19:08:24,630 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 19:08:24,669 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-03 19:08:24,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 174 transitions, 438 flow [2023-08-03 19:08:25,063 INFO L124 PetriNetUnfolderBase]: 788/3526 cut-off events. [2023-08-03 19:08:25,063 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 19:08:25,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4200 conditions, 3526 events. 788/3526 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 28331 event pairs, 11 based on Foata normal form. 0/3028 useless extension candidates. Maximal degree in co-relation 2129. Up to 192 conditions per place. [2023-08-03 19:08:25,090 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 174 transitions, 438 flow [2023-08-03 19:08:25,105 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 174 transitions, 438 flow [2023-08-03 19:08:25,106 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 19:08:25,106 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 174 transitions, 438 flow [2023-08-03 19:08:25,107 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 174 transitions, 438 flow [2023-08-03 19:08:25,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 174 transitions, 438 flow [2023-08-03 19:08:25,469 INFO L124 PetriNetUnfolderBase]: 788/3526 cut-off events. [2023-08-03 19:08:25,470 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-03 19:08:25,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4200 conditions, 3526 events. 788/3526 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 28331 event pairs, 11 based on Foata normal form. 0/3028 useless extension candidates. Maximal degree in co-relation 2129. Up to 192 conditions per place. [2023-08-03 19:08:25,568 INFO L119 LiptonReduction]: Number of co-enabled transitions 10772 [2023-08-03 19:08:27,905 INFO L134 LiptonReduction]: Checked pairs total: 30880 [2023-08-03 19:08:27,905 INFO L136 LiptonReduction]: Total number of compositions: 112 [2023-08-03 19:08:27,907 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 19:08:27,908 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;@21e05f0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 19:08:27,909 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-03 19:08:27,912 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 19:08:27,912 INFO L124 PetriNetUnfolderBase]: 1/32 cut-off events. [2023-08-03 19:08:27,912 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 19:08:27,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:08:27,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:08:27,912 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 19:08:27,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:08:27,913 INFO L85 PathProgramCache]: Analyzing trace with hash 363212998, now seen corresponding path program 1 times [2023-08-03 19:08:27,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:08:27,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235849498] [2023-08-03 19:08:27,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:08:27,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:08:27,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:08:28,001 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 19:08:28,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:08:28,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235849498] [2023-08-03 19:08:28,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235849498] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:08:28,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:08:28,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 19:08:28,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53470835] [2023-08-03 19:08:28,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:08:28,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:08:28,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:08:28,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:08:28,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:08:28,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 286 [2023-08-03 19:08:28,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 77 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 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 19:08:28,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:08:28,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 286 [2023-08-03 19:08:28,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:09:29,931 INFO L124 PetriNetUnfolderBase]: 753117/987163 cut-off events. [2023-08-03 19:09:29,931 INFO L125 PetriNetUnfolderBase]: For 129136/129136 co-relation queries the response was YES. [2023-08-03 19:09:32,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2006556 conditions, 987163 events. 753117/987163 cut-off events. For 129136/129136 co-relation queries the response was YES. Maximal size of possible extension queue 21091. Compared 7235627 event pairs, 580008 based on Foata normal form. 0/889182 useless extension candidates. Maximal degree in co-relation 592217. Up to 948330 conditions per place. [2023-08-03 19:09:35,352 INFO L140 encePairwiseOnDemand]: 281/286 looper letters, 65 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2023-08-03 19:09:35,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 79 transitions, 382 flow [2023-08-03 19:09:35,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:09:35,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:09:35,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 478 transitions. [2023-08-03 19:09:35,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5571095571095571 [2023-08-03 19:09:35,363 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 478 transitions. [2023-08-03 19:09:35,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 478 transitions. [2023-08-03 19:09:35,365 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:09:35,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 478 transitions. [2023-08-03 19:09:35,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.33333333333334) internal successors, (478), 3 states have internal predecessors, (478), 0 states have call successors, (0), 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 19:09:35,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 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 19:09:35,377 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 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 19:09:35,379 INFO L175 Difference]: Start difference. First operand has 70 places, 77 transitions, 244 flow. Second operand 3 states and 478 transitions. [2023-08-03 19:09:35,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 79 transitions, 382 flow [2023-08-03 19:09:35,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 79 transitions, 382 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 19:09:35,469 INFO L231 Difference]: Finished difference. Result has 72 places, 75 transitions, 250 flow [2023-08-03 19:09:35,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=72, PETRI_TRANSITIONS=75} [2023-08-03 19:09:35,474 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 2 predicate places. [2023-08-03 19:09:35,475 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 75 transitions, 250 flow [2023-08-03 19:09:35,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 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 19:09:35,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:09:35,478 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 19:09:35,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 19:09:35,484 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 19:09:35,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:09:35,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1153193686, now seen corresponding path program 1 times [2023-08-03 19:09:35,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:09:35,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860536689] [2023-08-03 19:09:35,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:09:35,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:09:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:09:35,597 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:09:35,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:09:35,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860536689] [2023-08-03 19:09:35,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860536689] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:09:35,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913713417] [2023-08-03 19:09:35,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:09:35,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:09:35,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:09:35,601 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:09:35,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 19:09:35,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:09:35,695 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 19:09:35,696 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:09:35,743 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:09:35,744 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:09:35,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913713417] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:09:35,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:09:35,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 19:09:35,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745795532] [2023-08-03 19:09:35,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:09:35,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 19:09:35,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:09:35,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 19:09:35,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 19:09:35,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 286 [2023-08-03 19:09:35,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 75 transitions, 250 flow. Second operand has 5 states, 5 states have (on average 136.6) internal successors, (683), 5 states have internal predecessors, (683), 0 states have call successors, (0), 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 19:09:35,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:09:35,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 286 [2023-08-03 19:09:35,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:10:35,732 INFO L124 PetriNetUnfolderBase]: 753086/987572 cut-off events. [2023-08-03 19:10:35,732 INFO L125 PetriNetUnfolderBase]: For 128924/128924 co-relation queries the response was YES. [2023-08-03 19:10:38,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2006961 conditions, 987572 events. 753086/987572 cut-off events. For 128924/128924 co-relation queries the response was YES. Maximal size of possible extension queue 21057. Compared 7239390 event pairs, 451800 based on Foata normal form. 20/889635 useless extension candidates. Maximal degree in co-relation 708005. Up to 948229 conditions per place. [2023-08-03 19:10:41,721 INFO L140 encePairwiseOnDemand]: 282/286 looper letters, 71 selfloop transitions, 4 changer transitions 0/86 dead transitions. [2023-08-03 19:10:41,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 86 transitions, 420 flow [2023-08-03 19:10:41,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 19:10:41,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 19:10:41,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 751 transitions. [2023-08-03 19:10:41,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5251748251748252 [2023-08-03 19:10:41,726 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 751 transitions. [2023-08-03 19:10:41,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 751 transitions. [2023-08-03 19:10:41,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:10:41,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 751 transitions. [2023-08-03 19:10:41,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.2) internal successors, (751), 5 states have internal predecessors, (751), 0 states have call successors, (0), 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 19:10:41,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 286.0) internal successors, (1716), 6 states have internal predecessors, (1716), 0 states have call successors, (0), 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 19:10:41,734 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 286.0) internal successors, (1716), 6 states have internal predecessors, (1716), 0 states have call successors, (0), 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 19:10:41,734 INFO L175 Difference]: Start difference. First operand has 72 places, 75 transitions, 250 flow. Second operand 5 states and 751 transitions. [2023-08-03 19:10:41,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 86 transitions, 420 flow [2023-08-03 19:10:41,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 86 transitions, 410 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 19:10:41,780 INFO L231 Difference]: Finished difference. Result has 74 places, 75 transitions, 255 flow [2023-08-03 19:10:41,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=255, PETRI_PLACES=74, PETRI_TRANSITIONS=75} [2023-08-03 19:10:41,781 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 4 predicate places. [2023-08-03 19:10:41,781 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 75 transitions, 255 flow [2023-08-03 19:10:41,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.6) internal successors, (683), 5 states have internal predecessors, (683), 0 states have call successors, (0), 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 19:10:41,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:10:41,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:10:41,788 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 19:10:41,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:10:41,985 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 19:10:41,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:10:41,986 INFO L85 PathProgramCache]: Analyzing trace with hash 416618494, now seen corresponding path program 1 times [2023-08-03 19:10:41,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:10:41,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699093370] [2023-08-03 19:10:41,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:10:41,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:10:41,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:10:42,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 19:10:42,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:10:42,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699093370] [2023-08-03 19:10:42,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699093370] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 19:10:42,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821048915] [2023-08-03 19:10:42,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:10:42,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 19:10:42,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 19:10:42,040 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 19:10:42,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 19:10:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:10:42,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 19:10:42,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 19:10:42,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 19:10:42,142 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 19:10:42,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821048915] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:10:42,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 19:10:42,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [3] total 4 [2023-08-03 19:10:42,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084347685] [2023-08-03 19:10:42,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:10:42,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:10:42,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:10:42,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:10:42,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 19:10:42,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 286 [2023-08-03 19:10:42,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 75 transitions, 255 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 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 19:10:42,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:10:42,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 286 [2023-08-03 19:10:42,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 19:12:16,895 INFO L124 PetriNetUnfolderBase]: 1180131/1514580 cut-off events. [2023-08-03 19:12:16,896 INFO L125 PetriNetUnfolderBase]: For 179044/179044 co-relation queries the response was YES. [2023-08-03 19:12:22,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3078383 conditions, 1514580 events. 1180131/1514580 cut-off events. For 179044/179044 co-relation queries the response was YES. Maximal size of possible extension queue 26893. Compared 10633781 event pairs, 337683 based on Foata normal form. 4452/1373056 useless extension candidates. Maximal degree in co-relation 1703862. Up to 1405778 conditions per place. [2023-08-03 19:12:28,192 INFO L140 encePairwiseOnDemand]: 279/286 looper letters, 107 selfloop transitions, 5 changer transitions 0/121 dead transitions. [2023-08-03 19:12:28,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 121 transitions, 631 flow [2023-08-03 19:12:28,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 19:12:28,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 19:12:28,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 509 transitions. [2023-08-03 19:12:28,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5932400932400932 [2023-08-03 19:12:28,195 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 509 transitions. [2023-08-03 19:12:28,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 509 transitions. [2023-08-03 19:12:28,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 19:12:28,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 509 transitions. [2023-08-03 19:12:28,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 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 19:12:28,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 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 19:12:28,205 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 286.0) internal successors, (1144), 4 states have internal predecessors, (1144), 0 states have call successors, (0), 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 19:12:28,205 INFO L175 Difference]: Start difference. First operand has 74 places, 75 transitions, 255 flow. Second operand 3 states and 509 transitions. [2023-08-03 19:12:28,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 121 transitions, 631 flow [2023-08-03 19:12:28,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 121 transitions, 619 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-03 19:12:28,607 INFO L231 Difference]: Finished difference. Result has 75 places, 79 transitions, 283 flow [2023-08-03 19:12:28,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=286, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=283, PETRI_PLACES=75, PETRI_TRANSITIONS=79} [2023-08-03 19:12:28,624 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 5 predicate places. [2023-08-03 19:12:28,628 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 79 transitions, 283 flow [2023-08-03 19:12:28,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 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 19:12:28,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 19:12:28,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 19:12:28,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-03 19:12:28,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-03 19:12:28,831 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread3Err0ASSERT_VIOLATIONERROR_FUNCTION === [thread3Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 19:12:28,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 19:12:28,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1596528165, now seen corresponding path program 1 times [2023-08-03 19:12:28,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 19:12:28,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790952828] [2023-08-03 19:12:28,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 19:12:28,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 19:12:28,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 19:12:28,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 19:12:28,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 19:12:28,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790952828] [2023-08-03 19:12:28,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790952828] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 19:12:28,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 19:12:28,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 19:12:28,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521235766] [2023-08-03 19:12:28,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 19:12:28,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 19:12:28,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 19:12:28,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 19:12:28,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 19:12:28,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 286 [2023-08-03 19:12:28,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 79 transitions, 283 flow. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 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 19:12:28,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 19:12:28,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 286 [2023-08-03 19:12:28,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand