/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET -i ../../../trunk/examples/svcomp/weaver/chl-collitem-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 19:59:14,834 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 19:59:14,885 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-13 19:59:14,889 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 19:59:14,889 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 19:59:14,906 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 19:59:14,906 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 19:59:14,906 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 19:59:14,906 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 19:59:14,906 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 19:59:14,907 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 19:59:14,907 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 19:59:14,907 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 19:59:14,907 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 19:59:14,907 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 19:59:14,907 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 19:59:14,907 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 19:59:14,907 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 19:59:14,907 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 19:59:14,907 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 19:59:14,907 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 19:59:14,907 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 19:59:14,909 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 19:59:14,909 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 19:59:14,909 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 19:59:14,909 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 19:59:14,909 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 19:59:14,909 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 19:59:14,909 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 19:59:14,909 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:59:14,910 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:59:14,910 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:59:14,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:59:14,910 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 19:59:14,910 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:59:14,910 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:59:14,910 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:59:14,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:59:14,910 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 19:59:14,910 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 19:59:14,910 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 19:59:14,910 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 19:59:14,910 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 19:59:14,910 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 19:59:14,911 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 19:59:14,911 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 19:59:14,911 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 19:59:14,911 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> PETRI_NET [2025-04-13 19:59:15,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 19:59:15,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 19:59:15,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 19:59:15,131 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 19:59:15,131 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 19:59:15,133 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-collitem-subst.wvr.c [2025-04-13 19:59:16,420 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c485c4aa4/aa67bba313b2458e86a77decb72195a5/FLAGdeee818f8 [2025-04-13 19:59:16,611 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 19:59:16,611 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-collitem-subst.wvr.c [2025-04-13 19:59:16,616 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c485c4aa4/aa67bba313b2458e86a77decb72195a5/FLAGdeee818f8 [2025-04-13 19:59:17,420 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c485c4aa4/aa67bba313b2458e86a77decb72195a5 [2025-04-13 19:59:17,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 19:59:17,423 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 19:59:17,424 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 19:59:17,424 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 19:59:17,427 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 19:59:17,428 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:59:17" (1/1) ... [2025-04-13 19:59:17,428 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@206a773b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:59:17, skipping insertion in model container [2025-04-13 19:59:17,428 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:59:17" (1/1) ... [2025-04-13 19:59:17,442 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 19:59:17,610 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-collitem-subst.wvr.c[3583,3596] [2025-04-13 19:59:17,620 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:59:17,630 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 19:59:17,659 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-collitem-subst.wvr.c[3583,3596] [2025-04-13 19:59:17,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:59:17,678 INFO L204 MainTranslator]: Completed translation [2025-04-13 19:59:17,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:59:17 WrapperNode [2025-04-13 19:59:17,678 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 19:59:17,680 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 19:59:17,680 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 19:59:17,680 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 19:59:17,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:59:17" (1/1) ... [2025-04-13 19:59:17,694 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:59:17" (1/1) ... [2025-04-13 19:59:17,724 INFO L138 Inliner]: procedures = 22, calls = 31, calls flagged for inlining = 18, calls inlined = 40, statements flattened = 349 [2025-04-13 19:59:17,724 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 19:59:17,724 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 19:59:17,724 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 19:59:17,724 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 19:59:17,731 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:59:17" (1/1) ... [2025-04-13 19:59:17,731 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:59:17" (1/1) ... [2025-04-13 19:59:17,734 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:59:17" (1/1) ... [2025-04-13 19:59:17,752 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-04-13 19:59:17,752 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:59:17" (1/1) ... [2025-04-13 19:59:17,752 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:59:17" (1/1) ... [2025-04-13 19:59:17,758 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:59:17" (1/1) ... [2025-04-13 19:59:17,759 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:59:17" (1/1) ... [2025-04-13 19:59:17,762 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:59:17" (1/1) ... [2025-04-13 19:59:17,763 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:59:17" (1/1) ... [2025-04-13 19:59:17,764 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:59:17" (1/1) ... [2025-04-13 19:59:17,769 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 19:59:17,770 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 19:59:17,770 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 19:59:17,770 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 19:59:17,770 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:59:17" (1/1) ... [2025-04-13 19:59:17,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:59:17,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:59:17,794 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-04-13 19:59:17,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-04-13 19:59:17,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 19:59:17,814 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 19:59:17,814 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 19:59:17,814 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-04-13 19:59:17,814 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-04-13 19:59:17,814 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-04-13 19:59:17,814 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-04-13 19:59:17,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 19:59:17,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-04-13 19:59:17,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-04-13 19:59:17,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 19:59:17,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 19:59:17,816 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 19:59:17,890 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 19:59:17,891 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 19:59:18,260 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 19:59:18,261 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 19:59:18,261 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 19:59:18,738 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 19:59:18,738 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:59:18 BoogieIcfgContainer [2025-04-13 19:59:18,738 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 19:59:18,739 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 19:59:18,739 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 19:59:18,742 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 19:59:18,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 07:59:17" (1/3) ... [2025-04-13 19:59:18,743 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686e4c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:59:18, skipping insertion in model container [2025-04-13 19:59:18,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:59:17" (2/3) ... [2025-04-13 19:59:18,743 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686e4c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:59:18, skipping insertion in model container [2025-04-13 19:59:18,743 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:59:18" (3/3) ... [2025-04-13 19:59:18,744 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-collitem-subst.wvr.c [2025-04-13 19:59:18,755 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 19:59:18,756 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-collitem-subst.wvr.c that has 4 procedures, 25 locations, 21 edges, 1 initial locations, 0 loop locations, and 1 error locations. [2025-04-13 19:59:18,757 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 19:59:18,826 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-04-13 19:59:18,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 24 transitions, 69 flow [2025-04-13 19:59:18,899 INFO L116 PetriNetUnfolderBase]: 0/21 cut-off events. [2025-04-13 19:59:18,901 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-13 19:59:18,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 21 events. 0/21 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 23 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-04-13 19:59:18,902 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 24 transitions, 69 flow [2025-04-13 19:59:18,905 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 20 transitions, 58 flow [2025-04-13 19:59:18,912 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:59:18,921 INFO L340 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@4f38490a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:59:18,921 INFO L341 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2025-04-13 19:59:18,939 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:59:18,939 INFO L116 PetriNetUnfolderBase]: 0/19 cut-off events. [2025-04-13 19:59:18,939 INFO L117 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-04-13 19:59:18,939 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:59:18,940 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:59:18,940 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 19:59:18,943 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:59:18,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1495339681, now seen corresponding path program 1 times [2025-04-13 19:59:18,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:59:18,948 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836582763] [2025-04-13 19:59:18,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:59:18,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:59:19,013 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-04-13 19:59:19,319 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 19:59:19,319 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:59:19,319 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:59:24,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:59:24,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:59:24,843 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836582763] [2025-04-13 19:59:24,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836582763] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:59:24,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:59:24,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 19:59:24,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441897749] [2025-04-13 19:59:24,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:59:24,849 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 19:59:24,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:59:24,865 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 19:59:24,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 19:59:24,867 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2025-04-13 19:59:24,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 58 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:59:24,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:59:24,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2025-04-13 19:59:24,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:59:25,408 INFO L116 PetriNetUnfolderBase]: 178/329 cut-off events. [2025-04-13 19:59:25,408 INFO L117 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2025-04-13 19:59:25,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 329 events. 178/329 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1244 event pairs, 10 based on Foata normal form. 1/329 useless extension candidates. Maximal degree in co-relation 634. Up to 110 conditions per place. [2025-04-13 19:59:25,412 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 34 selfloop transitions, 6 changer transitions 8/51 dead transitions. [2025-04-13 19:59:25,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 51 transitions, 246 flow [2025-04-13 19:59:25,414 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 19:59:25,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-13 19:59:25,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 85 transitions. [2025-04-13 19:59:25,421 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5902777777777778 [2025-04-13 19:59:25,422 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 58 flow. Second operand 6 states and 85 transitions. [2025-04-13 19:59:25,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 51 transitions, 246 flow [2025-04-13 19:59:25,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 51 transitions, 214 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-04-13 19:59:25,429 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 79 flow [2025-04-13 19:59:25,430 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=79, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2025-04-13 19:59:25,433 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2025-04-13 19:59:25,433 INFO L485 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 79 flow [2025-04-13 19:59:25,433 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:59:25,433 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:59:25,434 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:59:25,434 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 19:59:25,434 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 19:59:25,434 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:59:25,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1778355813, now seen corresponding path program 2 times [2025-04-13 19:59:25,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:59:25,434 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272888869] [2025-04-13 19:59:25,434 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-04-13 19:59:25,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:59:25,449 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 1 equivalence classes. [2025-04-13 19:59:25,494 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 19:59:25,494 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 19:59:25,494 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:59:26,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:59:26,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:59:26,909 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272888869] [2025-04-13 19:59:26,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272888869] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:59:26,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:59:26,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 19:59:26,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850913551] [2025-04-13 19:59:26,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:59:26,910 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 19:59:26,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:59:26,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 19:59:26,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 19:59:26,910 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2025-04-13 19:59:26,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 79 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:59:26,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:59:26,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2025-04-13 19:59:26,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:59:27,185 INFO L116 PetriNetUnfolderBase]: 194/364 cut-off events. [2025-04-13 19:59:27,185 INFO L117 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2025-04-13 19:59:27,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 869 conditions, 364 events. 194/364 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1496 event pairs, 28 based on Foata normal form. 1/364 useless extension candidates. Maximal degree in co-relation 857. Up to 151 conditions per place. [2025-04-13 19:59:27,190 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 33 selfloop transitions, 6 changer transitions 12/54 dead transitions. [2025-04-13 19:59:27,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 54 transitions, 260 flow [2025-04-13 19:59:27,191 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 19:59:27,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-13 19:59:27,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2025-04-13 19:59:27,192 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.6041666666666666 [2025-04-13 19:59:27,192 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 79 flow. Second operand 6 states and 87 transitions. [2025-04-13 19:59:27,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 54 transitions, 260 flow [2025-04-13 19:59:27,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 54 transitions, 256 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-04-13 19:59:27,193 INFO L231 Difference]: Finished difference. Result has 37 places, 23 transitions, 90 flow [2025-04-13 19:59:27,193 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=90, PETRI_PLACES=37, PETRI_TRANSITIONS=23} [2025-04-13 19:59:27,194 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2025-04-13 19:59:27,194 INFO L485 AbstractCegarLoop]: Abstraction has has 37 places, 23 transitions, 90 flow [2025-04-13 19:59:27,194 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:59:27,194 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:59:27,194 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:59:27,194 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-04-13 19:59:27,194 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 19:59:27,198 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:59:27,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1036000091, now seen corresponding path program 3 times [2025-04-13 19:59:27,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:59:27,199 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696818358] [2025-04-13 19:59:27,199 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-04-13 19:59:27,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:59:27,218 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 20 statements into 1 equivalence classes. [2025-04-13 19:59:27,251 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 19:59:27,251 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-04-13 19:59:27,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:59:28,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:59:28,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:59:28,223 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696818358] [2025-04-13 19:59:28,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696818358] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:59:28,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:59:28,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 19:59:28,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258555059] [2025-04-13 19:59:28,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:59:28,224 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 19:59:28,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:59:28,224 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 19:59:28,224 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 19:59:28,224 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2025-04-13 19:59:28,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 23 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:59:28,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:59:28,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2025-04-13 19:59:28,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:59:28,509 INFO L116 PetriNetUnfolderBase]: 189/366 cut-off events. [2025-04-13 19:59:28,509 INFO L117 PetriNetUnfolderBase]: For 331/331 co-relation queries the response was YES. [2025-04-13 19:59:28,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 931 conditions, 366 events. 189/366 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1533 event pairs, 16 based on Foata normal form. 1/366 useless extension candidates. Maximal degree in co-relation 914. Up to 190 conditions per place. [2025-04-13 19:59:28,514 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 31 selfloop transitions, 5 changer transitions 11/50 dead transitions. [2025-04-13 19:59:28,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 50 transitions, 259 flow [2025-04-13 19:59:28,515 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 19:59:28,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-13 19:59:28,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 84 transitions. [2025-04-13 19:59:28,516 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2025-04-13 19:59:28,516 INFO L175 Difference]: Start difference. First operand has 37 places, 23 transitions, 90 flow. Second operand 6 states and 84 transitions. [2025-04-13 19:59:28,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 50 transitions, 259 flow [2025-04-13 19:59:28,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 50 transitions, 235 flow, removed 6 selfloop flow, removed 5 redundant places. [2025-04-13 19:59:28,518 INFO L231 Difference]: Finished difference. Result has 39 places, 23 transitions, 90 flow [2025-04-13 19:59:28,520 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=90, PETRI_PLACES=39, PETRI_TRANSITIONS=23} [2025-04-13 19:59:28,522 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2025-04-13 19:59:28,522 INFO L485 AbstractCegarLoop]: Abstraction has has 39 places, 23 transitions, 90 flow [2025-04-13 19:59:28,522 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:59:28,522 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:59:28,522 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:59:28,522 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-04-13 19:59:28,522 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 19:59:28,523 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:59:28,523 INFO L85 PathProgramCache]: Analyzing trace with hash 972981067, now seen corresponding path program 4 times [2025-04-13 19:59:28,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:59:28,523 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181713709] [2025-04-13 19:59:28,523 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-04-13 19:59:28,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:59:28,539 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 20 statements into 2 equivalence classes. [2025-04-13 19:59:28,591 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 19:59:28,591 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-04-13 19:59:28,592 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:59:29,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:59:29,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:59:29,743 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181713709] [2025-04-13 19:59:29,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181713709] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:59:29,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:59:29,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 19:59:29,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213792300] [2025-04-13 19:59:29,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:59:29,744 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 19:59:29,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:59:29,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 19:59:29,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 19:59:29,745 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2025-04-13 19:59:29,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 23 transitions, 90 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:59:29,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:59:29,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2025-04-13 19:59:29,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:59:30,066 INFO L116 PetriNetUnfolderBase]: 138/268 cut-off events. [2025-04-13 19:59:30,066 INFO L117 PetriNetUnfolderBase]: For 216/216 co-relation queries the response was YES. [2025-04-13 19:59:30,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 683 conditions, 268 events. 138/268 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 997 event pairs, 9 based on Foata normal form. 1/268 useless extension candidates. Maximal degree in co-relation 669. Up to 93 conditions per place. [2025-04-13 19:59:30,068 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 30 selfloop transitions, 5 changer transitions 10/48 dead transitions. [2025-04-13 19:59:30,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 246 flow [2025-04-13 19:59:30,070 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 19:59:30,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-13 19:59:30,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 82 transitions. [2025-04-13 19:59:30,070 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2025-04-13 19:59:30,071 INFO L175 Difference]: Start difference. First operand has 39 places, 23 transitions, 90 flow. Second operand 6 states and 82 transitions. [2025-04-13 19:59:30,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 246 flow [2025-04-13 19:59:30,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 48 transitions, 231 flow, removed 3 selfloop flow, removed 4 redundant places. [2025-04-13 19:59:30,072 INFO L231 Difference]: Finished difference. Result has 41 places, 23 transitions, 94 flow [2025-04-13 19:59:30,072 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=94, PETRI_PLACES=41, PETRI_TRANSITIONS=23} [2025-04-13 19:59:30,073 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 11 predicate places. [2025-04-13 19:59:30,073 INFO L485 AbstractCegarLoop]: Abstraction has has 41 places, 23 transitions, 94 flow [2025-04-13 19:59:30,073 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:59:30,073 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:59:30,073 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:59:30,073 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-04-13 19:59:30,073 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 19:59:30,073 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:59:30,075 INFO L85 PathProgramCache]: Analyzing trace with hash -280080769, now seen corresponding path program 5 times [2025-04-13 19:59:30,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:59:30,075 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744774056] [2025-04-13 19:59:30,075 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-04-13 19:59:30,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:59:30,090 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 20 statements into 1 equivalence classes. [2025-04-13 19:59:30,135 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 19:59:30,135 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-04-13 19:59:30,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:59:31,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:59:31,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:59:31,358 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744774056] [2025-04-13 19:59:31,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744774056] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:59:31,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:59:31,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 19:59:31,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685399995] [2025-04-13 19:59:31,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:59:31,358 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 19:59:31,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:59:31,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 19:59:31,359 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 19:59:31,359 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2025-04-13 19:59:31,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 23 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:59:31,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:59:31,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2025-04-13 19:59:31,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:59:31,644 INFO L116 PetriNetUnfolderBase]: 106/212 cut-off events. [2025-04-13 19:59:31,644 INFO L117 PetriNetUnfolderBase]: For 192/192 co-relation queries the response was YES. [2025-04-13 19:59:31,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 573 conditions, 212 events. 106/212 cut-off events. For 192/192 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 734 event pairs, 20 based on Foata normal form. 1/212 useless extension candidates. Maximal degree in co-relation 562. Up to 109 conditions per place. [2025-04-13 19:59:31,645 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 19 selfloop transitions, 3 changer transitions 16/41 dead transitions. [2025-04-13 19:59:31,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 41 transitions, 218 flow [2025-04-13 19:59:31,646 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 19:59:31,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-13 19:59:31,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 75 transitions. [2025-04-13 19:59:31,646 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2025-04-13 19:59:31,646 INFO L175 Difference]: Start difference. First operand has 41 places, 23 transitions, 94 flow. Second operand 6 states and 75 transitions. [2025-04-13 19:59:31,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 41 transitions, 218 flow [2025-04-13 19:59:31,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 213 flow, removed 1 selfloop flow, removed 2 redundant places. [2025-04-13 19:59:31,648 INFO L231 Difference]: Finished difference. Result has 43 places, 20 transitions, 75 flow [2025-04-13 19:59:31,648 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=75, PETRI_PLACES=43, PETRI_TRANSITIONS=20} [2025-04-13 19:59:31,648 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2025-04-13 19:59:31,648 INFO L485 AbstractCegarLoop]: Abstraction has has 43 places, 20 transitions, 75 flow [2025-04-13 19:59:31,648 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:59:31,648 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:59:31,648 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-04-13 19:59:31,648 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-04-13 19:59:31,648 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2025-04-13 19:59:31,649 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:59:31,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1075484381, now seen corresponding path program 6 times [2025-04-13 19:59:31,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:59:31,649 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407149365] [2025-04-13 19:59:31,649 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-04-13 19:59:31,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:59:31,662 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 20 statements into 1 equivalence classes. [2025-04-13 19:59:31,682 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-04-13 19:59:31,683 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2025-04-13 19:59:31,683 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:59:32,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:59:32,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:59:32,683 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407149365] [2025-04-13 19:59:32,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407149365] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:59:32,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:59:32,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-04-13 19:59:32,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974138780] [2025-04-13 19:59:32,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:59:32,684 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-04-13 19:59:32,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:59:32,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-04-13 19:59:32,684 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-04-13 19:59:32,684 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 24 [2025-04-13 19:59:32,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 20 transitions, 75 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:59:32,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:59:32,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 24 [2025-04-13 19:59:32,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:59:32,948 INFO L116 PetriNetUnfolderBase]: 42/89 cut-off events. [2025-04-13 19:59:32,948 INFO L117 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2025-04-13 19:59:32,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 89 events. 42/89 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 185 event pairs, 0 based on Foata normal form. 1/89 useless extension candidates. Maximal degree in co-relation 240. Up to 54 conditions per place. [2025-04-13 19:59:32,949 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2025-04-13 19:59:32,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 26 transitions, 132 flow [2025-04-13 19:59:32,949 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-04-13 19:59:32,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-04-13 19:59:32,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 60 transitions. [2025-04-13 19:59:32,950 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2025-04-13 19:59:32,950 INFO L175 Difference]: Start difference. First operand has 43 places, 20 transitions, 75 flow. Second operand 6 states and 60 transitions. [2025-04-13 19:59:32,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 26 transitions, 132 flow [2025-04-13 19:59:32,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 26 transitions, 115 flow, removed 1 selfloop flow, removed 8 redundant places. [2025-04-13 19:59:32,951 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2025-04-13 19:59:32,951 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2025-04-13 19:59:32,951 INFO L279 CegarLoopForPetriNet]: 30 programPoint places, 6 predicate places. [2025-04-13 19:59:32,951 INFO L485 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2025-04-13 19:59:32,951 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-04-13 19:59:32,954 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2025-04-13 19:59:32,954 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2025-04-13 19:59:32,954 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2025-04-13 19:59:32,954 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2025-04-13 19:59:32,954 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-04-13 19:59:32,955 INFO L422 BasicCegarLoop]: Path program histogram: [6] [2025-04-13 19:59:32,957 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 19:59:32,957 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 19:59:32,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 07:59:32 BasicIcfg [2025-04-13 19:59:32,963 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 19:59:32,963 INFO L158 Benchmark]: Toolchain (without parser) took 15540.45ms. Allocated memory was 142.6MB in the beginning and 713.0MB in the end (delta: 570.4MB). Free memory was 100.2MB in the beginning and 639.3MB in the end (delta: -539.2MB). Peak memory consumption was 29.9MB. Max. memory is 8.0GB. [2025-04-13 19:59:32,963 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 159.4MB. Free memory is still 87.7MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:59:32,964 INFO L158 Benchmark]: CACSL2BoogieTranslator took 255.75ms. Allocated memory is still 142.6MB. Free memory was 100.2MB in the beginning and 85.1MB in the end (delta: 15.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2025-04-13 19:59:32,964 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.85ms. Allocated memory is still 142.6MB. Free memory was 85.1MB in the beginning and 81.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 19:59:32,964 INFO L158 Benchmark]: Boogie Preprocessor took 44.88ms. Allocated memory is still 142.6MB. Free memory was 81.9MB in the beginning and 78.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 19:59:32,964 INFO L158 Benchmark]: RCFGBuilder took 968.48ms. Allocated memory is still 142.6MB. Free memory was 78.8MB in the beginning and 45.1MB in the end (delta: 33.7MB). Peak memory consumption was 61.2MB. Max. memory is 8.0GB. [2025-04-13 19:59:32,964 INFO L158 Benchmark]: TraceAbstraction took 14223.70ms. Allocated memory was 142.6MB in the beginning and 713.0MB in the end (delta: 570.4MB). Free memory was 44.8MB in the beginning and 639.3MB in the end (delta: -594.5MB). There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:59:32,965 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 159.4MB. Free memory is still 87.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 255.75ms. Allocated memory is still 142.6MB. Free memory was 100.2MB in the beginning and 85.1MB in the end (delta: 15.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 43.85ms. Allocated memory is still 142.6MB. Free memory was 85.1MB in the beginning and 81.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 44.88ms. Allocated memory is still 142.6MB. Free memory was 81.9MB in the beginning and 78.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 968.48ms. Allocated memory is still 142.6MB. Free memory was 78.8MB in the beginning and 45.1MB in the end (delta: 33.7MB). Peak memory consumption was 61.2MB. Max. memory is 8.0GB. * TraceAbstraction took 14223.70ms. Allocated memory was 142.6MB in the beginning and 713.0MB in the end (delta: 570.4MB). Free memory was 44.8MB in the beginning and 639.3MB in the end (delta: -594.5MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 101]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 40 locations, 39 edges, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 184 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 184 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 520 IncrementalHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 0 mSDtfsCounter, 520 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=4, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 11.3s InterpolantComputationTime, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 5524 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-13 19:59:32,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request...