/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-collitem-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 13:45:16,689 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 13:45:16,735 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 13:45:16,739 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 13:45:16,739 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 13:45:16,759 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 13:45:16,760 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 13:45:16,760 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 13:45:16,760 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 13:45:16,761 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 13:45:16,761 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 13:45:16,761 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 13:45:16,762 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 13:45:16,762 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 13:45:16,762 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 13:45:16,763 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 13:45:16,763 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 13:45:16,763 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 13:45:16,764 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 13:45:16,764 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 13:45:16,764 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 13:45:16,767 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 13:45:16,767 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 13:45:16,768 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 13:45:16,768 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 13:45:16,768 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 13:45:16,768 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 13:45:16,768 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 13:45:16,769 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 13:45:16,769 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 13:45:16,770 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 13:45:16,770 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 13:45:16,770 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 13:45:16,770 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 13:45:16,770 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 13:45:16,770 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 13:45:17,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 13:45:17,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 13:45:17,107 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 13:45:17,107 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 13:45:17,108 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 13:45:17,109 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-collitem-subst.wvr.c [2023-08-24 13:45:18,375 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 13:45:18,571 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 13:45:18,572 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-collitem-subst.wvr.c [2023-08-24 13:45:18,577 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e03749e45/68a663d25ee64a988770a9e11bfc4fd4/FLAGd3979a294 [2023-08-24 13:45:18,587 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e03749e45/68a663d25ee64a988770a9e11bfc4fd4 [2023-08-24 13:45:18,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 13:45:18,591 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 13:45:18,592 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 13:45:18,592 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 13:45:18,594 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 13:45:18,595 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:45:18" (1/1) ... [2023-08-24 13:45:18,595 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30f23513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:45:18, skipping insertion in model container [2023-08-24 13:45:18,595 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:45:18" (1/1) ... [2023-08-24 13:45:18,613 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 13:45:18,768 WARN L240 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[3544,3557] [2023-08-24 13:45:18,771 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 13:45:18,782 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 13:45:18,811 WARN L240 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[3544,3557] [2023-08-24 13:45:18,813 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 13:45:18,820 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 13:45:18,820 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 13:45:18,824 INFO L206 MainTranslator]: Completed translation [2023-08-24 13:45:18,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:45:18 WrapperNode [2023-08-24 13:45:18,825 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 13:45:18,826 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 13:45:18,826 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 13:45:18,826 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 13:45:18,831 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:45:18" (1/1) ... [2023-08-24 13:45:18,838 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:45:18" (1/1) ... [2023-08-24 13:45:18,864 INFO L138 Inliner]: procedures = 23, calls = 46, calls flagged for inlining = 18, calls inlined = 40, statements flattened = 365 [2023-08-24 13:45:18,864 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 13:45:18,865 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 13:45:18,865 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 13:45:18,865 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 13:45:18,872 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:45:18" (1/1) ... [2023-08-24 13:45:18,872 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:45:18" (1/1) ... [2023-08-24 13:45:18,877 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:45:18" (1/1) ... [2023-08-24 13:45:18,877 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:45:18" (1/1) ... [2023-08-24 13:45:18,885 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:45:18" (1/1) ... [2023-08-24 13:45:18,888 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:45:18" (1/1) ... [2023-08-24 13:45:18,889 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:45:18" (1/1) ... [2023-08-24 13:45:18,891 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:45:18" (1/1) ... [2023-08-24 13:45:18,894 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 13:45:18,895 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 13:45:18,895 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 13:45:18,895 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 13:45:18,896 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:45:18" (1/1) ... [2023-08-24 13:45:18,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 13:45:18,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 13:45:18,928 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) [2023-08-24 13:45:18,962 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 [2023-08-24 13:45:18,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 13:45:18,975 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 13:45:18,975 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 13:45:18,975 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 13:45:18,975 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 13:45:18,976 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 13:45:18,976 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 13:45:18,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 13:45:18,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 13:45:18,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 13:45:18,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 13:45:18,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 13:45:18,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 13:45:18,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 13:45:18,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 13:45:18,978 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 13:45:18,980 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 13:45:19,081 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 13:45:19,083 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 13:45:19,580 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 13:45:20,098 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 13:45:20,098 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 13:45:20,100 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:45:20 BoogieIcfgContainer [2023-08-24 13:45:20,100 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 13:45:20,102 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 13:45:20,103 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 13:45:20,105 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 13:45:20,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 01:45:18" (1/3) ... [2023-08-24 13:45:20,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22c3f09d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:45:20, skipping insertion in model container [2023-08-24 13:45:20,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:45:18" (2/3) ... [2023-08-24 13:45:20,107 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22c3f09d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:45:20, skipping insertion in model container [2023-08-24 13:45:20,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:45:20" (3/3) ... [2023-08-24 13:45:20,108 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-collitem-subst.wvr.c [2023-08-24 13:45:20,123 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 13:45:20,123 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 13:45:20,123 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 13:45:20,206 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 13:45:20,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 138 transitions, 300 flow [2023-08-24 13:45:20,292 INFO L124 PetriNetUnfolderBase]: 2/135 cut-off events. [2023-08-24 13:45:20,293 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 13:45:20,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 135 events. 2/135 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 22 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2023-08-24 13:45:20,296 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 138 transitions, 300 flow [2023-08-24 13:45:20,300 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 125 transitions, 268 flow [2023-08-24 13:45:20,303 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 13:45:20,311 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 125 transitions, 268 flow [2023-08-24 13:45:20,313 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 125 transitions, 268 flow [2023-08-24 13:45:20,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 125 transitions, 268 flow [2023-08-24 13:45:20,346 INFO L124 PetriNetUnfolderBase]: 2/125 cut-off events. [2023-08-24 13:45:20,347 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 13:45:20,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 125 events. 2/125 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 21 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2023-08-24 13:45:20,348 INFO L119 LiptonReduction]: Number of co-enabled transitions 270 [2023-08-24 13:45:29,729 INFO L134 LiptonReduction]: Checked pairs total: 460 [2023-08-24 13:45:29,730 INFO L136 LiptonReduction]: Total number of compositions: 115 [2023-08-24 13:45:29,741 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 13:45:29,745 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5327b91a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 13:45:29,746 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 13:45:29,753 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 13:45:29,753 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-08-24 13:45:29,753 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 13:45:29,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:45:29,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:45:29,754 INFO L420 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)] === [2023-08-24 13:45:29,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:45:29,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1008846803, now seen corresponding path program 1 times [2023-08-24 13:45:29,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:45:29,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476232746] [2023-08-24 13:45:29,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:45:29,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:45:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:45:35,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:45:35,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:45:35,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476232746] [2023-08-24 13:45:35,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476232746] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:45:35,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:45:35,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 13:45:35,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211557308] [2023-08-24 13:45:35,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:45:35,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 13:45:35,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:45:35,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 13:45:35,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 13:45:35,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 253 [2023-08-24 13:45:35,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:45:35,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:45:35,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 253 [2023-08-24 13:45:35,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:45:36,207 INFO L124 PetriNetUnfolderBase]: 38/100 cut-off events. [2023-08-24 13:45:36,207 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-08-24 13:45:36,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 100 events. 38/100 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 279 event pairs, 2 based on Foata normal form. 1/101 useless extension candidates. Maximal degree in co-relation 169. Up to 38 conditions per place. [2023-08-24 13:45:36,209 INFO L140 encePairwiseOnDemand]: 248/253 looper letters, 32 selfloop transitions, 6 changer transitions 7/45 dead transitions. [2023-08-24 13:45:36,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 45 transitions, 228 flow [2023-08-24 13:45:36,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 13:45:36,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 13:45:36,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 628 transitions. [2023-08-24 13:45:36,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4137022397891963 [2023-08-24 13:45:36,224 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 628 transitions. [2023-08-24 13:45:36,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 628 transitions. [2023-08-24 13:45:36,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:45:36,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 628 transitions. [2023-08-24 13:45:36,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 104.66666666666667) internal successors, (628), 6 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:45:36,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 253.0) internal successors, (1771), 7 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:45:36,239 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 253.0) internal successors, (1771), 7 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:45:36,240 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 50 flow. Second operand 6 states and 628 transitions. [2023-08-24 13:45:36,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 45 transitions, 228 flow [2023-08-24 13:45:36,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 45 transitions, 196 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-24 13:45:36,245 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 71 flow [2023-08-24 13:45:36,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2023-08-24 13:45:36,249 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2023-08-24 13:45:36,249 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 71 flow [2023-08-24 13:45:36,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:45:36,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:45:36,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:45:36,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 13:45:36,250 INFO L420 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)] === [2023-08-24 13:45:36,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:45:36,251 INFO L85 PathProgramCache]: Analyzing trace with hash -811935731, now seen corresponding path program 2 times [2023-08-24 13:45:36,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:45:36,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717971715] [2023-08-24 13:45:36,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:45:36,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:45:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:45:38,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:45:38,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:45:38,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717971715] [2023-08-24 13:45:38,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717971715] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:45:38,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:45:38,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 13:45:38,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209822062] [2023-08-24 13:45:38,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:45:38,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 13:45:38,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:45:38,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 13:45:38,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 13:45:38,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 253 [2023-08-24 13:45:38,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:45:38,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:45:38,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 253 [2023-08-24 13:45:38,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:45:39,207 INFO L124 PetriNetUnfolderBase]: 38/116 cut-off events. [2023-08-24 13:45:39,207 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-08-24 13:45:39,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 116 events. 38/116 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 409 event pairs, 6 based on Foata normal form. 1/117 useless extension candidates. Maximal degree in co-relation 309. Up to 58 conditions per place. [2023-08-24 13:45:39,209 INFO L140 encePairwiseOnDemand]: 248/253 looper letters, 30 selfloop transitions, 7 changer transitions 9/46 dead transitions. [2023-08-24 13:45:39,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 46 transitions, 235 flow [2023-08-24 13:45:39,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 13:45:39,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 13:45:39,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 628 transitions. [2023-08-24 13:45:39,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4137022397891963 [2023-08-24 13:45:39,212 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 628 transitions. [2023-08-24 13:45:39,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 628 transitions. [2023-08-24 13:45:39,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:45:39,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 628 transitions. [2023-08-24 13:45:39,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 104.66666666666667) internal successors, (628), 6 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:45:39,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 253.0) internal successors, (1771), 7 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:45:39,217 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 253.0) internal successors, (1771), 7 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:45:39,218 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 71 flow. Second operand 6 states and 628 transitions. [2023-08-24 13:45:39,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 46 transitions, 235 flow [2023-08-24 13:45:39,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 231 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-24 13:45:39,220 INFO L231 Difference]: Finished difference. Result has 34 places, 21 transitions, 100 flow [2023-08-24 13:45:39,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100, PETRI_PLACES=34, PETRI_TRANSITIONS=21} [2023-08-24 13:45:39,220 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2023-08-24 13:45:39,221 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 21 transitions, 100 flow [2023-08-24 13:45:39,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:45:39,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:45:39,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:45:39,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 13:45:39,222 INFO L420 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)] === [2023-08-24 13:45:39,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:45:39,222 INFO L85 PathProgramCache]: Analyzing trace with hash -498670695, now seen corresponding path program 3 times [2023-08-24 13:45:39,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:45:39,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67173750] [2023-08-24 13:45:39,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:45:39,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:45:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:45:41,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:45:41,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:45:41,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67173750] [2023-08-24 13:45:41,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67173750] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:45:41,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:45:41,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 13:45:41,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805126267] [2023-08-24 13:45:41,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:45:41,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 13:45:41,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:45:41,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 13:45:41,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 13:45:41,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 253 [2023-08-24 13:45:41,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 21 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:45:41,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:45:41,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 253 [2023-08-24 13:45:41,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:45:42,038 INFO L124 PetriNetUnfolderBase]: 33/103 cut-off events. [2023-08-24 13:45:42,039 INFO L125 PetriNetUnfolderBase]: For 160/160 co-relation queries the response was YES. [2023-08-24 13:45:42,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 103 events. 33/103 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 340 event pairs, 2 based on Foata normal form. 1/104 useless extension candidates. Maximal degree in co-relation 334. Up to 51 conditions per place. [2023-08-24 13:45:42,043 INFO L140 encePairwiseOnDemand]: 248/253 looper letters, 27 selfloop transitions, 6 changer transitions 11/44 dead transitions. [2023-08-24 13:45:42,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 44 transitions, 257 flow [2023-08-24 13:45:42,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 13:45:42,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 13:45:42,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 626 transitions. [2023-08-24 13:45:42,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41238471673254284 [2023-08-24 13:45:42,045 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 626 transitions. [2023-08-24 13:45:42,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 626 transitions. [2023-08-24 13:45:42,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:45:42,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 626 transitions. [2023-08-24 13:45:42,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 104.33333333333333) internal successors, (626), 6 states have internal predecessors, (626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:45:42,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 253.0) internal successors, (1771), 7 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:45:42,051 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 253.0) internal successors, (1771), 7 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:45:42,051 INFO L175 Difference]: Start difference. First operand has 34 places, 21 transitions, 100 flow. Second operand 6 states and 626 transitions. [2023-08-24 13:45:42,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 44 transitions, 257 flow [2023-08-24 13:45:42,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 44 transitions, 243 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-24 13:45:42,056 INFO L231 Difference]: Finished difference. Result has 38 places, 20 transitions, 100 flow [2023-08-24 13:45:42,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=100, PETRI_PLACES=38, PETRI_TRANSITIONS=20} [2023-08-24 13:45:42,057 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2023-08-24 13:45:42,061 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 20 transitions, 100 flow [2023-08-24 13:45:42,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:45:42,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:45:42,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:45:42,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 13:45:42,063 INFO L420 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)] === [2023-08-24 13:45:42,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:45:42,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1383390537, now seen corresponding path program 4 times [2023-08-24 13:45:42,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:45:42,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493683736] [2023-08-24 13:45:42,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:45:42,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:45:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:45:44,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:45:44,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:45:44,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493683736] [2023-08-24 13:45:44,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493683736] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:45:44,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:45:44,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 13:45:44,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561942634] [2023-08-24 13:45:44,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:45:44,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 13:45:44,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:45:44,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 13:45:44,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 13:45:44,206 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 253 [2023-08-24 13:45:44,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 20 transitions, 100 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:45:44,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:45:44,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 253 [2023-08-24 13:45:44,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:45:44,579 INFO L124 PetriNetUnfolderBase]: 17/59 cut-off events. [2023-08-24 13:45:44,580 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2023-08-24 13:45:44,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 59 events. 17/59 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 136 event pairs, 0 based on Foata normal form. 1/60 useless extension candidates. Maximal degree in co-relation 205. Up to 20 conditions per place. [2023-08-24 13:45:44,580 INFO L140 encePairwiseOnDemand]: 248/253 looper letters, 18 selfloop transitions, 5 changer transitions 13/36 dead transitions. [2023-08-24 13:45:44,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 36 transitions, 219 flow [2023-08-24 13:45:44,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 13:45:44,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 13:45:44,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 618 transitions. [2023-08-24 13:45:44,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40711462450592883 [2023-08-24 13:45:44,583 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 618 transitions. [2023-08-24 13:45:44,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 618 transitions. [2023-08-24 13:45:44,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:45:44,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 618 transitions. [2023-08-24 13:45:44,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 103.0) internal successors, (618), 6 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:45:44,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 253.0) internal successors, (1771), 7 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:45:44,588 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 253.0) internal successors, (1771), 7 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:45:44,588 INFO L175 Difference]: Start difference. First operand has 38 places, 20 transitions, 100 flow. Second operand 6 states and 618 transitions. [2023-08-24 13:45:44,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 36 transitions, 219 flow [2023-08-24 13:45:44,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 202 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-24 13:45:44,590 INFO L231 Difference]: Finished difference. Result has 37 places, 18 transitions, 81 flow [2023-08-24 13:45:44,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=81, PETRI_PLACES=37, PETRI_TRANSITIONS=18} [2023-08-24 13:45:44,591 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2023-08-24 13:45:44,591 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 18 transitions, 81 flow [2023-08-24 13:45:44,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:45:44,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:45:44,592 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:45:44,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 13:45:44,592 INFO L420 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)] === [2023-08-24 13:45:44,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:45:44,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1313505239, now seen corresponding path program 5 times [2023-08-24 13:45:44,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:45:44,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050285200] [2023-08-24 13:45:44,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:45:44,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:45:44,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:45:46,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:45:46,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:45:46,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050285200] [2023-08-24 13:45:46,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050285200] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:45:46,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:45:46,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 13:45:46,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473670732] [2023-08-24 13:45:46,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:45:46,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 13:45:46,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:45:46,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 13:45:46,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 13:45:46,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 253 [2023-08-24 13:45:46,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 18 transitions, 81 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:45:46,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:45:46,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 253 [2023-08-24 13:45:46,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:45:47,006 INFO L124 PetriNetUnfolderBase]: 8/40 cut-off events. [2023-08-24 13:45:47,007 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2023-08-24 13:45:47,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 40 events. 8/40 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 134. Up to 19 conditions per place. [2023-08-24 13:45:47,007 INFO L140 encePairwiseOnDemand]: 248/253 looper letters, 15 selfloop transitions, 3 changer transitions 12/30 dead transitions. [2023-08-24 13:45:47,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 30 transitions, 178 flow [2023-08-24 13:45:47,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 13:45:47,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 13:45:47,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 613 transitions. [2023-08-24 13:45:47,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4038208168642951 [2023-08-24 13:45:47,010 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 613 transitions. [2023-08-24 13:45:47,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 613 transitions. [2023-08-24 13:45:47,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:45:47,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 613 transitions. [2023-08-24 13:45:47,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 102.16666666666667) internal successors, (613), 6 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:45:47,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 253.0) internal successors, (1771), 7 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:45:47,014 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 253.0) internal successors, (1771), 7 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:45:47,014 INFO L175 Difference]: Start difference. First operand has 37 places, 18 transitions, 81 flow. Second operand 6 states and 613 transitions. [2023-08-24 13:45:47,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 30 transitions, 178 flow [2023-08-24 13:45:47,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 144 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-08-24 13:45:47,015 INFO L231 Difference]: Finished difference. Result has 33 places, 16 transitions, 56 flow [2023-08-24 13:45:47,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=56, PETRI_PLACES=33, PETRI_TRANSITIONS=16} [2023-08-24 13:45:47,016 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 7 predicate places. [2023-08-24 13:45:47,016 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 16 transitions, 56 flow [2023-08-24 13:45:47,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:45:47,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 13:45:47,017 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 13:45:47,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 13:45:47,017 INFO L420 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)] === [2023-08-24 13:45:47,017 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 13:45:47,017 INFO L85 PathProgramCache]: Analyzing trace with hash 170595627, now seen corresponding path program 6 times [2023-08-24 13:45:47,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 13:45:47,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159168822] [2023-08-24 13:45:47,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 13:45:47,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 13:45:47,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 13:45:49,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 13:45:49,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 13:45:49,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159168822] [2023-08-24 13:45:49,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159168822] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 13:45:49,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 13:45:49,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 13:45:49,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730092468] [2023-08-24 13:45:49,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 13:45:49,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 13:45:49,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 13:45:49,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 13:45:49,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 13:45:49,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 253 [2023-08-24 13:45:49,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 16 transitions, 56 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:45:49,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 13:45:49,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 253 [2023-08-24 13:45:49,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 13:45:50,089 INFO L124 PetriNetUnfolderBase]: 3/21 cut-off events. [2023-08-24 13:45:50,089 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-24 13:45:50,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 21 events. 3/21 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 62. Up to 8 conditions per place. [2023-08-24 13:45:50,090 INFO L140 encePairwiseOnDemand]: 248/253 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2023-08-24 13:45:50,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 18 transitions, 94 flow [2023-08-24 13:45:50,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 13:45:50,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 13:45:50,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 601 transitions. [2023-08-24 13:45:50,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3959156785243742 [2023-08-24 13:45:50,093 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 601 transitions. [2023-08-24 13:45:50,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 601 transitions. [2023-08-24 13:45:50,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 13:45:50,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 601 transitions. [2023-08-24 13:45:50,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.16666666666667) internal successors, (601), 6 states have internal predecessors, (601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:45:50,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 253.0) internal successors, (1771), 7 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:45:50,097 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 253.0) internal successors, (1771), 7 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:45:50,097 INFO L175 Difference]: Start difference. First operand has 33 places, 16 transitions, 56 flow. Second operand 6 states and 601 transitions. [2023-08-24 13:45:50,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 18 transitions, 94 flow [2023-08-24 13:45:50,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 18 transitions, 82 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-24 13:45:50,098 INFO L231 Difference]: Finished difference. Result has 29 places, 0 transitions, 0 flow [2023-08-24 13:45:50,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=253, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=29, PETRI_TRANSITIONS=0} [2023-08-24 13:45:50,099 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2023-08-24 13:45:50,099 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 0 transitions, 0 flow [2023-08-24 13:45:50,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 13:45:50,101 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 13:45:50,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 13:45:50,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 13:45:50,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 13:45:50,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 13:45:50,103 INFO L445 BasicCegarLoop]: Path program histogram: [6] [2023-08-24 13:45:50,105 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 13:45:50,105 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 13:45:50,108 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 01:45:50 BasicIcfg [2023-08-24 13:45:50,108 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 13:45:50,110 INFO L158 Benchmark]: Toolchain (without parser) took 31518.19ms. Allocated memory was 350.2MB in the beginning and 1.3GB in the end (delta: 964.7MB). Free memory was 326.7MB in the beginning and 1.2GB in the end (delta: -829.9MB). Peak memory consumption was 135.7MB. Max. memory is 16.0GB. [2023-08-24 13:45:50,110 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 350.2MB. Free memory is still 327.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 13:45:50,114 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.57ms. Allocated memory is still 350.2MB. Free memory was 326.4MB in the beginning and 314.7MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 13:45:50,115 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.56ms. Allocated memory is still 350.2MB. Free memory was 314.7MB in the beginning and 311.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 13:45:50,115 INFO L158 Benchmark]: Boogie Preprocessor took 29.75ms. Allocated memory is still 350.2MB. Free memory was 311.5MB in the beginning and 309.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 13:45:50,115 INFO L158 Benchmark]: RCFGBuilder took 1205.01ms. Allocated memory was 350.2MB in the beginning and 482.3MB in the end (delta: 132.1MB). Free memory was 309.4MB in the beginning and 422.0MB in the end (delta: -112.6MB). Peak memory consumption was 61.9MB. Max. memory is 16.0GB. [2023-08-24 13:45:50,115 INFO L158 Benchmark]: TraceAbstraction took 30005.83ms. Allocated memory was 482.3MB in the beginning and 1.3GB in the end (delta: 832.6MB). Free memory was 422.0MB in the beginning and 1.2GB in the end (delta: -734.6MB). Peak memory consumption was 96.9MB. Max. memory is 16.0GB. [2023-08-24 13:45:50,118 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 350.2MB. Free memory is still 327.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 233.57ms. Allocated memory is still 350.2MB. Free memory was 326.4MB in the beginning and 314.7MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 38.56ms. Allocated memory is still 350.2MB. Free memory was 314.7MB in the beginning and 311.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.75ms. Allocated memory is still 350.2MB. Free memory was 311.5MB in the beginning and 309.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 1205.01ms. Allocated memory was 350.2MB in the beginning and 482.3MB in the end (delta: 132.1MB). Free memory was 309.4MB in the beginning and 422.0MB in the end (delta: -112.6MB). Peak memory consumption was 61.9MB. Max. memory is 16.0GB. * TraceAbstraction took 30005.83ms. Allocated memory was 482.3MB in the beginning and 1.3GB in the end (delta: 832.6MB). Free memory was 422.0MB in the beginning and 1.2GB in the end (delta: -734.6MB). Peak memory consumption was 96.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.4s, 133 PlacesBefore, 26 PlacesAfterwards, 125 TransitionsBefore, 16 TransitionsAfterwards, 270 CoEnabledTransitionPairs, 8 FixpointIterations, 89 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 115 TotalNumberOfCompositions, 460 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 460, independent: 460, independent conditional: 0, independent unconditional: 460, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 167, independent: 167, independent conditional: 0, independent unconditional: 167, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 460, independent: 293, independent conditional: 0, independent unconditional: 293, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 167, unknown conditional: 0, unknown unconditional: 167] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 101]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 152 locations, 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: 29.9s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 174 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 174 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 437 IncrementalHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 0 mSDtfsCounter, 437 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=2, 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, 1.1s SatisfiabilityAnalysisTime, 16.6s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 3940 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-24 13:45:50,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...