/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_77-tricky_address4_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:39:20,239 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:39:20,320 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-SemanticLbe.epf [2023-11-17 15:39:20,350 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:39:20,351 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:39:20,351 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:39:20,352 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:39:20,352 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:39:20,353 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:39:20,356 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:39:20,357 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:39:20,357 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:39:20,357 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:39:20,358 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:39:20,359 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:39:20,359 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:39:20,359 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:39:20,359 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:39:20,359 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:39:20,359 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:39:20,360 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:39:20,360 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:39:20,361 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:39:20,361 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:39:20,361 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:39:20,361 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:39:20,361 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:39:20,362 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:39:20,362 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:39:20,362 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:39:20,363 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:39:20,363 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:39:20,363 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:39:20,612 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:39:20,635 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:39:20,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:39:20,638 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:39:20,638 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:39:20,639 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2023-11-17 15:39:21,736 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:39:22,026 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:39:22,033 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2023-11-17 15:39:22,051 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea35d14a5/69a1624cc6524f3e8e0002619abd5bca/FLAGc0ed7bbb6 [2023-11-17 15:39:22,062 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea35d14a5/69a1624cc6524f3e8e0002619abd5bca [2023-11-17 15:39:22,064 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:39:22,065 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:39:22,066 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:39:22,066 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:39:22,070 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:39:22,070 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:39:22" (1/1) ... [2023-11-17 15:39:22,071 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31ad39ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:39:22, skipping insertion in model container [2023-11-17 15:39:22,071 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:39:22" (1/1) ... [2023-11-17 15:39:22,125 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:39:22,511 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_77-tricky_address4_racing.i[41323,41336] [2023-11-17 15:39:22,545 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:39:22,569 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:39:22,609 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_77-tricky_address4_racing.i[41323,41336] [2023-11-17 15:39:22,624 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:39:22,686 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:39:22,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:39:22 WrapperNode [2023-11-17 15:39:22,687 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:39:22,688 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:39:22,688 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:39:22,688 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:39:22,694 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:39:22" (1/1) ... [2023-11-17 15:39:22,722 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:39:22" (1/1) ... [2023-11-17 15:39:22,745 INFO L138 Inliner]: procedures = 271, calls = 49, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 219 [2023-11-17 15:39:22,746 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:39:22,747 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:39:22,747 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:39:22,747 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:39:22,759 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:39:22" (1/1) ... [2023-11-17 15:39:22,760 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:39:22" (1/1) ... [2023-11-17 15:39:22,770 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:39:22" (1/1) ... [2023-11-17 15:39:22,770 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:39:22" (1/1) ... [2023-11-17 15:39:22,782 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:39:22" (1/1) ... [2023-11-17 15:39:22,797 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:39:22" (1/1) ... [2023-11-17 15:39:22,800 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:39:22" (1/1) ... [2023-11-17 15:39:22,801 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:39:22" (1/1) ... [2023-11-17 15:39:22,804 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:39:22,804 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:39:22,805 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:39:22,805 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:39:22,805 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:39:22" (1/1) ... [2023-11-17 15:39:22,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:39:22,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:39:22,832 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) [2023-11-17 15:39:22,854 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 [2023-11-17 15:39:22,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:39:22,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:39:22,877 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-17 15:39:22,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 15:39:22,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:39:22,877 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 15:39:22,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:39:22,878 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-17 15:39:22,878 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-17 15:39:22,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:39:22,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:39:22,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:39:22,879 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 15:39:23,008 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:39:23,010 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:39:23,258 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:39:23,297 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:39:23,297 INFO L307 CfgBuilder]: Removed 23 assume(true) statements. [2023-11-17 15:39:23,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:39:23 BoogieIcfgContainer [2023-11-17 15:39:23,299 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:39:23,301 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:39:23,301 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:39:23,304 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:39:23,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:39:22" (1/3) ... [2023-11-17 15:39:23,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6617a53f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:39:23, skipping insertion in model container [2023-11-17 15:39:23,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:39:22" (2/3) ... [2023-11-17 15:39:23,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6617a53f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:39:23, skipping insertion in model container [2023-11-17 15:39:23,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:39:23" (3/3) ... [2023-11-17 15:39:23,306 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_77-tricky_address4_racing.i [2023-11-17 15:39:23,320 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:39:23,320 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-17 15:39:23,320 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:39:23,401 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-17 15:39:23,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 211 transitions, 429 flow [2023-11-17 15:39:23,549 INFO L124 PetriNetUnfolderBase]: 45/290 cut-off events. [2023-11-17 15:39:23,549 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 15:39:23,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 290 events. 45/290 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 932 event pairs, 0 based on Foata normal form. 0/239 useless extension candidates. Maximal degree in co-relation 163. Up to 8 conditions per place. [2023-11-17 15:39:23,558 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 211 transitions, 429 flow [2023-11-17 15:39:23,572 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 206 transitions, 416 flow [2023-11-17 15:39:23,575 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:39:23,585 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 179 places, 206 transitions, 416 flow [2023-11-17 15:39:23,587 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 179 places, 206 transitions, 416 flow [2023-11-17 15:39:23,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 206 transitions, 416 flow [2023-11-17 15:39:23,636 INFO L124 PetriNetUnfolderBase]: 44/285 cut-off events. [2023-11-17 15:39:23,637 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:39:23,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 285 events. 44/285 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 903 event pairs, 0 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 163. Up to 8 conditions per place. [2023-11-17 15:39:23,647 INFO L119 LiptonReduction]: Number of co-enabled transitions 13430 [2023-11-17 15:39:26,813 INFO L134 LiptonReduction]: Checked pairs total: 18793 [2023-11-17 15:39:26,814 INFO L136 LiptonReduction]: Total number of compositions: 202 [2023-11-17 15:39:26,827 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:39:26,832 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=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;@3252010f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:39:26,833 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 15:39:26,837 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:39:26,837 INFO L124 PetriNetUnfolderBase]: 9/30 cut-off events. [2023-11-17 15:39:26,837 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:39:26,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:39:26,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-17 15:39:26,838 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-17 15:39:26,842 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:39:26,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1271554201, now seen corresponding path program 1 times [2023-11-17 15:39:26,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:39:26,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367949109] [2023-11-17 15:39:26,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:39:26,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:39:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:39:27,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:39:27,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:39:27,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367949109] [2023-11-17 15:39:27,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367949109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:39:27,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:39:27,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:39:27,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619363648] [2023-11-17 15:39:27,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:39:27,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:39:27,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:39:27,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:39:27,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:39:27,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 413 [2023-11-17 15:39:27,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 65 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 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) [2023-11-17 15:39:27,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:39:27,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 413 [2023-11-17 15:39:27,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:39:27,263 INFO L124 PetriNetUnfolderBase]: 357/749 cut-off events. [2023-11-17 15:39:27,263 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:39:27,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1454 conditions, 749 events. 357/749 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3538 event pairs, 320 based on Foata normal form. 78/710 useless extension candidates. Maximal degree in co-relation 1398. Up to 700 conditions per place. [2023-11-17 15:39:27,268 INFO L140 encePairwiseOnDemand]: 390/413 looper letters, 39 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-11-17 15:39:27,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 46 transitions, 178 flow [2023-11-17 15:39:27,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:39:27,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:39:27,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 527 transitions. [2023-11-17 15:39:27,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42534301856335754 [2023-11-17 15:39:27,284 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 527 transitions. [2023-11-17 15:39:27,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 527 transitions. [2023-11-17 15:39:27,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:39:27,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 527 transitions. [2023-11-17 15:39:27,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 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) [2023-11-17 15:39:27,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 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) [2023-11-17 15:39:27,296 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 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) [2023-11-17 15:39:27,297 INFO L175 Difference]: Start difference. First operand has 45 places, 65 transitions, 134 flow. Second operand 3 states and 527 transitions. [2023-11-17 15:39:27,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 46 transitions, 178 flow [2023-11-17 15:39:27,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 46 transitions, 178 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 15:39:27,302 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 106 flow [2023-11-17 15:39:27,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2023-11-17 15:39:27,307 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2023-11-17 15:39:27,307 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 106 flow [2023-11-17 15:39:27,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 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) [2023-11-17 15:39:27,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:39:27,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:39:27,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:39:27,309 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-17 15:39:27,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:39:27,309 INFO L85 PathProgramCache]: Analyzing trace with hash -300920594, now seen corresponding path program 1 times [2023-11-17 15:39:27,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:39:27,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155685625] [2023-11-17 15:39:27,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:39:27,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:39:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:39:27,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:39:27,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:39:27,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155685625] [2023-11-17 15:39:27,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155685625] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:39:27,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635269225] [2023-11-17 15:39:27,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:39:27,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:39:27,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:39:27,477 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:39:27,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 15:39:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:39:27,559 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-17 15:39:27,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:39:27,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:39:27,575 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:39:27,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635269225] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:39:27,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:39:27,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-17 15:39:27,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095750785] [2023-11-17 15:39:27,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:39:27,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:39:27,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:39:27,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:39:27,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:39:27,587 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 413 [2023-11-17 15:39:27,588 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 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) [2023-11-17 15:39:27,588 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:39:27,588 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 413 [2023-11-17 15:39:27,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:39:27,697 INFO L124 PetriNetUnfolderBase]: 358/738 cut-off events. [2023-11-17 15:39:27,697 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:39:27,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1432 conditions, 738 events. 358/738 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3574 event pairs, 152 based on Foata normal form. 0/627 useless extension candidates. Maximal degree in co-relation 1420. Up to 664 conditions per place. [2023-11-17 15:39:27,701 INFO L140 encePairwiseOnDemand]: 410/413 looper letters, 56 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-11-17 15:39:27,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 63 transitions, 256 flow [2023-11-17 15:39:27,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:39:27,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:39:27,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 523 transitions. [2023-11-17 15:39:27,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42211460855528654 [2023-11-17 15:39:27,703 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 523 transitions. [2023-11-17 15:39:27,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 523 transitions. [2023-11-17 15:39:27,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:39:27,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 523 transitions. [2023-11-17 15:39:27,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 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) [2023-11-17 15:39:27,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 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) [2023-11-17 15:39:27,709 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 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) [2023-11-17 15:39:27,709 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 106 flow. Second operand 3 states and 523 transitions. [2023-11-17 15:39:27,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 63 transitions, 256 flow [2023-11-17 15:39:27,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 63 transitions, 252 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 15:39:27,711 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 110 flow [2023-11-17 15:39:27,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-11-17 15:39:27,712 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 5 predicate places. [2023-11-17 15:39:27,712 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 110 flow [2023-11-17 15:39:27,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 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) [2023-11-17 15:39:27,713 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:39:27,713 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-17 15:39:27,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-17 15:39:27,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:39:27,925 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-17 15:39:27,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:39:27,926 INFO L85 PathProgramCache]: Analyzing trace with hash -749800365, now seen corresponding path program 1 times [2023-11-17 15:39:27,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:39:27,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909824845] [2023-11-17 15:39:27,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:39:27,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:39:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:39:27,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 15:39:27,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:39:27,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909824845] [2023-11-17 15:39:27,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909824845] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:39:27,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498230940] [2023-11-17 15:39:27,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:39:27,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:39:27,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:39:27,996 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:39:28,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 15:39:28,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:39:28,082 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 15:39:28,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:39:28,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 15:39:28,108 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:39:28,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 15:39:28,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498230940] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:39:28,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:39:28,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-17 15:39:28,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819215782] [2023-11-17 15:39:28,125 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:39:28,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 15:39:28,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:39:28,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 15:39:28,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-17 15:39:28,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 413 [2023-11-17 15:39:28,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 110 flow. Second operand has 7 states, 7 states have (on average 156.57142857142858) internal successors, (1096), 7 states have internal predecessors, (1096), 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) [2023-11-17 15:39:28,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:39:28,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 413 [2023-11-17 15:39:28,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:39:28,249 INFO L124 PetriNetUnfolderBase]: 357/732 cut-off events. [2023-11-17 15:39:28,249 INFO L125 PetriNetUnfolderBase]: For 37/37 co-relation queries the response was YES. [2023-11-17 15:39:28,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1483 conditions, 732 events. 357/732 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3385 event pairs, 320 based on Foata normal form. 3/639 useless extension candidates. Maximal degree in co-relation 1456. Up to 682 conditions per place. [2023-11-17 15:39:28,252 INFO L140 encePairwiseOnDemand]: 410/413 looper letters, 39 selfloop transitions, 5 changer transitions 0/49 dead transitions. [2023-11-17 15:39:28,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 49 transitions, 210 flow [2023-11-17 15:39:28,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:39:28,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:39:28,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 977 transitions. [2023-11-17 15:39:28,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39426957223567394 [2023-11-17 15:39:28,256 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 977 transitions. [2023-11-17 15:39:28,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 977 transitions. [2023-11-17 15:39:28,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:39:28,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 977 transitions. [2023-11-17 15:39:28,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 162.83333333333334) internal successors, (977), 6 states have internal predecessors, (977), 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) [2023-11-17 15:39:28,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 413.0) internal successors, (2891), 7 states have internal predecessors, (2891), 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) [2023-11-17 15:39:28,264 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 413.0) internal successors, (2891), 7 states have internal predecessors, (2891), 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) [2023-11-17 15:39:28,264 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 110 flow. Second operand 6 states and 977 transitions. [2023-11-17 15:39:28,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 49 transitions, 210 flow [2023-11-17 15:39:28,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 49 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 15:39:28,267 INFO L231 Difference]: Finished difference. Result has 56 places, 49 transitions, 142 flow [2023-11-17 15:39:28,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=142, PETRI_PLACES=56, PETRI_TRANSITIONS=49} [2023-11-17 15:39:28,269 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 11 predicate places. [2023-11-17 15:39:28,269 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 49 transitions, 142 flow [2023-11-17 15:39:28,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 156.57142857142858) internal successors, (1096), 7 states have internal predecessors, (1096), 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) [2023-11-17 15:39:28,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:39:28,270 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-11-17 15:39:28,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 15:39:28,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-17 15:39:28,476 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-17 15:39:28,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:39:28,476 INFO L85 PathProgramCache]: Analyzing trace with hash 389059784, now seen corresponding path program 2 times [2023-11-17 15:39:28,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:39:28,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256304791] [2023-11-17 15:39:28,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:39:28,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:39:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:39:28,559 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 15:39:28,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:39:28,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256304791] [2023-11-17 15:39:28,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256304791] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:39:28,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158971127] [2023-11-17 15:39:28,560 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:39:28,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:39:28,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:39:28,562 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:39:28,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 15:39:28,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:39:28,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:39:28,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 15:39:28,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:39:28,652 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 15:39:28,652 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:39:28,723 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 15:39:28,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158971127] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:39:28,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:39:28,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-17 15:39:28,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395650971] [2023-11-17 15:39:28,724 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:39:28,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 15:39:28,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:39:28,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 15:39:28,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:39:28,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 413 [2023-11-17 15:39:28,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 49 transitions, 142 flow. Second operand has 13 states, 13 states have (on average 156.30769230769232) internal successors, (2032), 13 states have internal predecessors, (2032), 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) [2023-11-17 15:39:28,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:39:28,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 413 [2023-11-17 15:39:28,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:39:28,857 INFO L124 PetriNetUnfolderBase]: 358/738 cut-off events. [2023-11-17 15:39:28,858 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2023-11-17 15:39:28,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1504 conditions, 738 events. 358/738 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3377 event pairs, 320 based on Foata normal form. 6/648 useless extension candidates. Maximal degree in co-relation 1445. Up to 682 conditions per place. [2023-11-17 15:39:28,861 INFO L140 encePairwiseOnDemand]: 410/413 looper letters, 39 selfloop transitions, 11 changer transitions 0/55 dead transitions. [2023-11-17 15:39:28,861 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 55 transitions, 278 flow [2023-11-17 15:39:28,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 15:39:28,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 15:39:28,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1916 transitions. [2023-11-17 15:39:28,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38660209846650523 [2023-11-17 15:39:28,866 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1916 transitions. [2023-11-17 15:39:28,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1916 transitions. [2023-11-17 15:39:28,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:39:28,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1916 transitions. [2023-11-17 15:39:28,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 159.66666666666666) internal successors, (1916), 12 states have internal predecessors, (1916), 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) [2023-11-17 15:39:28,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 413.0) internal successors, (5369), 13 states have internal predecessors, (5369), 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) [2023-11-17 15:39:28,879 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 413.0) internal successors, (5369), 13 states have internal predecessors, (5369), 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) [2023-11-17 15:39:28,879 INFO L175 Difference]: Start difference. First operand has 56 places, 49 transitions, 142 flow. Second operand 12 states and 1916 transitions. [2023-11-17 15:39:28,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 55 transitions, 278 flow [2023-11-17 15:39:28,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 55 transitions, 264 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-17 15:39:28,881 INFO L231 Difference]: Finished difference. Result has 72 places, 55 transitions, 212 flow [2023-11-17 15:39:28,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=212, PETRI_PLACES=72, PETRI_TRANSITIONS=55} [2023-11-17 15:39:28,882 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 27 predicate places. [2023-11-17 15:39:28,883 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 55 transitions, 212 flow [2023-11-17 15:39:28,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 156.30769230769232) internal successors, (2032), 13 states have internal predecessors, (2032), 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) [2023-11-17 15:39:28,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:39:28,884 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-11-17 15:39:28,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 15:39:29,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:39:29,090 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-17 15:39:29,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:39:29,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1375545112, now seen corresponding path program 3 times [2023-11-17 15:39:29,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:39:29,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877215464] [2023-11-17 15:39:29,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:39:29,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:39:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 15:39:29,116 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-17 15:39:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 15:39:29,155 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-17 15:39:29,155 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-17 15:39:29,156 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-11-17 15:39:29,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-11-17 15:39:29,157 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-11-17 15:39:29,158 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-11-17 15:39:29,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:39:29,158 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-11-17 15:39:29,160 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-17 15:39:29,160 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-17 15:39:29,190 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 15:39:29,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 252 places, 292 transitions, 600 flow [2023-11-17 15:39:29,242 INFO L124 PetriNetUnfolderBase]: 75/476 cut-off events. [2023-11-17 15:39:29,242 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-11-17 15:39:29,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 476 events. 75/476 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1951 event pairs, 0 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 292. Up to 12 conditions per place. [2023-11-17 15:39:29,246 INFO L82 GeneralOperation]: Start removeDead. Operand has 252 places, 292 transitions, 600 flow [2023-11-17 15:39:29,250 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 252 places, 292 transitions, 600 flow [2023-11-17 15:39:29,250 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:39:29,251 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 252 places, 292 transitions, 600 flow [2023-11-17 15:39:29,251 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 252 places, 292 transitions, 600 flow [2023-11-17 15:39:29,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 252 places, 292 transitions, 600 flow [2023-11-17 15:39:29,299 INFO L124 PetriNetUnfolderBase]: 75/476 cut-off events. [2023-11-17 15:39:29,299 INFO L125 PetriNetUnfolderBase]: For 6/7 co-relation queries the response was YES. [2023-11-17 15:39:29,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 488 conditions, 476 events. 75/476 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1951 event pairs, 0 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 292. Up to 12 conditions per place. [2023-11-17 15:39:29,322 INFO L119 LiptonReduction]: Number of co-enabled transitions 41080 [2023-11-17 15:39:33,631 INFO L134 LiptonReduction]: Checked pairs total: 60592 [2023-11-17 15:39:33,631 INFO L136 LiptonReduction]: Total number of compositions: 279 [2023-11-17 15:39:33,633 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:39:33,641 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=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;@3252010f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:39:33,642 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-17 15:39:33,644 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:39:33,644 INFO L124 PetriNetUnfolderBase]: 6/21 cut-off events. [2023-11-17 15:39:33,644 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:39:33,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:39:33,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-17 15:39:33,645 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-17 15:39:33,646 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:39:33,646 INFO L85 PathProgramCache]: Analyzing trace with hash -687610828, now seen corresponding path program 1 times [2023-11-17 15:39:33,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:39:33,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036162735] [2023-11-17 15:39:33,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:39:33,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:39:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:39:33,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:39:33,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:39:33,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036162735] [2023-11-17 15:39:33,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036162735] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:39:33,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:39:33,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:39:33,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185014789] [2023-11-17 15:39:33,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:39:33,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:39:33,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:39:33,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:39:33,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:39:33,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 571 [2023-11-17 15:39:33,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 100 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 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) [2023-11-17 15:39:33,687 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:39:33,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 571 [2023-11-17 15:39:33,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:39:35,098 INFO L124 PetriNetUnfolderBase]: 11639/18219 cut-off events. [2023-11-17 15:39:35,098 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2023-11-17 15:39:35,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35336 conditions, 18219 events. 11639/18219 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 553. Compared 118459 event pairs, 10854 based on Foata normal form. 2016/17525 useless extension candidates. Maximal degree in co-relation 14468. Up to 17028 conditions per place. [2023-11-17 15:39:35,199 INFO L140 encePairwiseOnDemand]: 537/571 looper letters, 58 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-11-17 15:39:35,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 70 transitions, 276 flow [2023-11-17 15:39:35,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:39:35,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:39:35,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 731 transitions. [2023-11-17 15:39:35,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4267367192060712 [2023-11-17 15:39:35,203 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 731 transitions. [2023-11-17 15:39:35,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 731 transitions. [2023-11-17 15:39:35,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:39:35,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 731 transitions. [2023-11-17 15:39:35,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 243.66666666666666) internal successors, (731), 3 states have internal predecessors, (731), 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) [2023-11-17 15:39:35,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 571.0) internal successors, (2284), 4 states have internal predecessors, (2284), 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) [2023-11-17 15:39:35,266 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 571.0) internal successors, (2284), 4 states have internal predecessors, (2284), 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) [2023-11-17 15:39:35,266 INFO L175 Difference]: Start difference. First operand has 68 places, 100 transitions, 216 flow. Second operand 3 states and 731 transitions. [2023-11-17 15:39:35,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 70 transitions, 276 flow [2023-11-17 15:39:35,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 70 transitions, 276 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 15:39:35,271 INFO L231 Difference]: Finished difference. Result has 71 places, 70 transitions, 166 flow [2023-11-17 15:39:35,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=571, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=71, PETRI_TRANSITIONS=70} [2023-11-17 15:39:35,276 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 3 predicate places. [2023-11-17 15:39:35,276 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 70 transitions, 166 flow [2023-11-17 15:39:35,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 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) [2023-11-17 15:39:35,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:39:35,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:39:35,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:39:35,277 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-17 15:39:35,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:39:35,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1711116157, now seen corresponding path program 1 times [2023-11-17 15:39:35,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:39:35,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136241896] [2023-11-17 15:39:35,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:39:35,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:39:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:39:35,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:39:35,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:39:35,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136241896] [2023-11-17 15:39:35,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136241896] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:39:35,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305975226] [2023-11-17 15:39:35,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:39:35,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:39:35,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:39:35,333 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:39:35,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 15:39:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:39:35,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-17 15:39:35,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:39:35,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:39:35,430 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:39:35,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305975226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:39:35,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:39:35,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-17 15:39:35,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927886856] [2023-11-17 15:39:35,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:39:35,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:39:35,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:39:35,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:39:35,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:39:35,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 571 [2023-11-17 15:39:35,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 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) [2023-11-17 15:39:35,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:39:35,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 571 [2023-11-17 15:39:35,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:39:36,770 INFO L124 PetriNetUnfolderBase]: 11449/17850 cut-off events. [2023-11-17 15:39:36,771 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2023-11-17 15:39:36,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34958 conditions, 17850 events. 11449/17850 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 116177 event pairs, 5184 based on Foata normal form. 0/15208 useless extension candidates. Maximal degree in co-relation 34945. Up to 16995 conditions per place. [2023-11-17 15:39:36,869 INFO L140 encePairwiseOnDemand]: 568/571 looper letters, 75 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2023-11-17 15:39:36,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 87 transitions, 354 flow [2023-11-17 15:39:36,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:39:36,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:39:36,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 716 transitions. [2023-11-17 15:39:36,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.417980151780502 [2023-11-17 15:39:36,872 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 716 transitions. [2023-11-17 15:39:36,872 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 716 transitions. [2023-11-17 15:39:36,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:39:36,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 716 transitions. [2023-11-17 15:39:36,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.66666666666666) internal successors, (716), 3 states have internal predecessors, (716), 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) [2023-11-17 15:39:36,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 571.0) internal successors, (2284), 4 states have internal predecessors, (2284), 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) [2023-11-17 15:39:36,877 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 571.0) internal successors, (2284), 4 states have internal predecessors, (2284), 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) [2023-11-17 15:39:36,877 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 166 flow. Second operand 3 states and 716 transitions. [2023-11-17 15:39:36,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 87 transitions, 354 flow [2023-11-17 15:39:36,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 87 transitions, 350 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 15:39:36,883 INFO L231 Difference]: Finished difference. Result has 73 places, 71 transitions, 174 flow [2023-11-17 15:39:36,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=571, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=73, PETRI_TRANSITIONS=71} [2023-11-17 15:39:36,884 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 5 predicate places. [2023-11-17 15:39:36,885 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 71 transitions, 174 flow [2023-11-17 15:39:36,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 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) [2023-11-17 15:39:36,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:39:36,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:39:36,895 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 15:39:37,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:39:37,091 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-17 15:39:37,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:39:37,092 INFO L85 PathProgramCache]: Analyzing trace with hash -470767201, now seen corresponding path program 1 times [2023-11-17 15:39:37,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:39:37,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205282816] [2023-11-17 15:39:37,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:39:37,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:39:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:39:37,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:39:37,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:39:37,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205282816] [2023-11-17 15:39:37,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205282816] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:39:37,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872272354] [2023-11-17 15:39:37,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:39:37,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:39:37,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:39:37,134 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:39:37,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 15:39:37,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:39:37,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 15:39:37,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:39:37,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:39:37,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:39:37,234 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:39:37,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872272354] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:39:37,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:39:37,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-17 15:39:37,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986191934] [2023-11-17 15:39:37,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:39:37,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:39:37,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:39:37,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:39:37,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:39:37,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 571 [2023-11-17 15:39:37,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 71 transitions, 174 flow. Second operand has 6 states, 6 states have (on average 215.0) internal successors, (1290), 6 states have internal predecessors, (1290), 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) [2023-11-17 15:39:37,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:39:37,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 571 [2023-11-17 15:39:37,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:39:38,575 INFO L124 PetriNetUnfolderBase]: 11716/18113 cut-off events. [2023-11-17 15:39:38,575 INFO L125 PetriNetUnfolderBase]: For 678/678 co-relation queries the response was YES. [2023-11-17 15:39:38,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35819 conditions, 18113 events. 11716/18113 cut-off events. For 678/678 co-relation queries the response was YES. Maximal size of possible extension queue 542. Compared 115484 event pairs, 10854 based on Foata normal form. 3/15705 useless extension candidates. Maximal degree in co-relation 35791. Up to 17012 conditions per place. [2023-11-17 15:39:38,653 INFO L140 encePairwiseOnDemand]: 568/571 looper letters, 59 selfloop transitions, 5 changer transitions 0/74 dead transitions. [2023-11-17 15:39:38,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 74 transitions, 314 flow [2023-11-17 15:39:38,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:39:38,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:39:38,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1344 transitions. [2023-11-17 15:39:38,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3922942206654991 [2023-11-17 15:39:38,666 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1344 transitions. [2023-11-17 15:39:38,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1344 transitions. [2023-11-17 15:39:38,666 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:39:38,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1344 transitions. [2023-11-17 15:39:38,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 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) [2023-11-17 15:39:38,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 571.0) internal successors, (3997), 7 states have internal predecessors, (3997), 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) [2023-11-17 15:39:38,681 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 571.0) internal successors, (3997), 7 states have internal predecessors, (3997), 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) [2023-11-17 15:39:38,681 INFO L175 Difference]: Start difference. First operand has 73 places, 71 transitions, 174 flow. Second operand 6 states and 1344 transitions. [2023-11-17 15:39:38,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 74 transitions, 314 flow [2023-11-17 15:39:38,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 74 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:39:38,689 INFO L231 Difference]: Finished difference. Result has 80 places, 74 transitions, 208 flow [2023-11-17 15:39:38,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=571, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=208, PETRI_PLACES=80, PETRI_TRANSITIONS=74} [2023-11-17 15:39:38,690 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 12 predicate places. [2023-11-17 15:39:38,690 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 74 transitions, 208 flow [2023-11-17 15:39:38,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 215.0) internal successors, (1290), 6 states have internal predecessors, (1290), 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) [2023-11-17 15:39:38,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:39:38,691 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:39:38,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-17 15:39:38,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:39:38,902 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-17 15:39:38,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:39:38,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1043603664, now seen corresponding path program 2 times [2023-11-17 15:39:38,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:39:38,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103170814] [2023-11-17 15:39:38,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:39:38,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:39:38,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:39:38,988 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:39:38,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:39:38,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103170814] [2023-11-17 15:39:38,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103170814] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:39:38,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663519485] [2023-11-17 15:39:38,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:39:38,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:39:38,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:39:38,990 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:39:39,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-17 15:39:39,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-17 15:39:39,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:39:39,071 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-17 15:39:39,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:39:39,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-11-17 15:39:39,169 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-11-17 15:39:39,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-11-17 15:39:39,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 10 [2023-11-17 15:39:39,225 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-17 15:39:39,225 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:39:39,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663519485] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:39:39,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:39:39,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-11-17 15:39:39,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048677510] [2023-11-17 15:39:39,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:39:39,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:39:39,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:39:39,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:39:39,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-17 15:39:39,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 571 [2023-11-17 15:39:39,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 74 transitions, 208 flow. Second operand has 5 states, 5 states have (on average 184.8) internal successors, (924), 5 states have internal predecessors, (924), 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) [2023-11-17 15:39:39,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:39:39,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 571 [2023-11-17 15:39:39,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:39:40,509 INFO L124 PetriNetUnfolderBase]: 12617/19857 cut-off events. [2023-11-17 15:39:40,509 INFO L125 PetriNetUnfolderBase]: For 749/749 co-relation queries the response was YES. [2023-11-17 15:39:40,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39621 conditions, 19857 events. 12617/19857 cut-off events. For 749/749 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 132386 event pairs, 4648 based on Foata normal form. 0/17605 useless extension candidates. Maximal degree in co-relation 39585. Up to 14811 conditions per place. [2023-11-17 15:39:40,609 INFO L140 encePairwiseOnDemand]: 562/571 looper letters, 107 selfloop transitions, 8 changer transitions 9/133 dead transitions. [2023-11-17 15:39:40,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 133 transitions, 591 flow [2023-11-17 15:39:40,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:39:40,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:39:40,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 855 transitions. [2023-11-17 15:39:40,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37434325744308233 [2023-11-17 15:39:40,613 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 855 transitions. [2023-11-17 15:39:40,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 855 transitions. [2023-11-17 15:39:40,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:39:40,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 855 transitions. [2023-11-17 15:39:40,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 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) [2023-11-17 15:39:40,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 571.0) internal successors, (2855), 5 states have internal predecessors, (2855), 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) [2023-11-17 15:39:40,619 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 571.0) internal successors, (2855), 5 states have internal predecessors, (2855), 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) [2023-11-17 15:39:40,619 INFO L175 Difference]: Start difference. First operand has 80 places, 74 transitions, 208 flow. Second operand 4 states and 855 transitions. [2023-11-17 15:39:40,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 133 transitions, 591 flow [2023-11-17 15:39:40,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 133 transitions, 577 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-17 15:39:40,624 INFO L231 Difference]: Finished difference. Result has 84 places, 80 transitions, 250 flow [2023-11-17 15:39:40,624 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=571, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=84, PETRI_TRANSITIONS=80} [2023-11-17 15:39:40,626 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 16 predicate places. [2023-11-17 15:39:40,626 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 80 transitions, 250 flow [2023-11-17 15:39:40,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 184.8) internal successors, (924), 5 states have internal predecessors, (924), 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) [2023-11-17 15:39:40,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:39:40,627 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1] [2023-11-17 15:39:40,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-17 15:39:40,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:39:40,836 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-17 15:39:40,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:39:40,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1103648309, now seen corresponding path program 1 times [2023-11-17 15:39:40,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:39:40,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797385034] [2023-11-17 15:39:40,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:39:40,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:39:40,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:39:40,914 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-17 15:39:40,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:39:40,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797385034] [2023-11-17 15:39:40,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797385034] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:39:40,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676241363] [2023-11-17 15:39:40,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:39:40,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:39:40,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:39:40,917 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:39:40,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-17 15:39:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:39:41,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 15:39:41,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:39:41,025 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-17 15:39:41,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:39:41,072 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-17 15:39:41,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676241363] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:39:41,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:39:41,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-17 15:39:41,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290879229] [2023-11-17 15:39:41,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:39:41,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 15:39:41,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:39:41,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 15:39:41,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:39:41,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 571 [2023-11-17 15:39:41,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 80 transitions, 250 flow. Second operand has 13 states, 13 states have (on average 214.3846153846154) internal successors, (2787), 13 states have internal predecessors, (2787), 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) [2023-11-17 15:39:41,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:39:41,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 571 [2023-11-17 15:39:41,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:39:42,822 INFO L124 PetriNetUnfolderBase]: 11883/18850 cut-off events. [2023-11-17 15:39:42,822 INFO L125 PetriNetUnfolderBase]: For 3147/3147 co-relation queries the response was YES. [2023-11-17 15:39:42,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40616 conditions, 18850 events. 11883/18850 cut-off events. For 3147/3147 co-relation queries the response was YES. Maximal size of possible extension queue 586. Compared 127295 event pairs, 10763 based on Foata normal form. 6/17718 useless extension candidates. Maximal degree in co-relation 40559. Up to 17936 conditions per place. [2023-11-17 15:39:42,879 INFO L140 encePairwiseOnDemand]: 568/571 looper letters, 65 selfloop transitions, 11 changer transitions 0/86 dead transitions. [2023-11-17 15:39:42,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 86 transitions, 438 flow [2023-11-17 15:39:42,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 15:39:42,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 15:39:42,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2631 transitions. [2023-11-17 15:39:42,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3839754816112084 [2023-11-17 15:39:42,888 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2631 transitions. [2023-11-17 15:39:42,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2631 transitions. [2023-11-17 15:39:42,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:39:42,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2631 transitions. [2023-11-17 15:39:42,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 219.25) internal successors, (2631), 12 states have internal predecessors, (2631), 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) [2023-11-17 15:39:42,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 571.0) internal successors, (7423), 13 states have internal predecessors, (7423), 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) [2023-11-17 15:39:42,908 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 571.0) internal successors, (7423), 13 states have internal predecessors, (7423), 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) [2023-11-17 15:39:42,908 INFO L175 Difference]: Start difference. First operand has 84 places, 80 transitions, 250 flow. Second operand 12 states and 2631 transitions. [2023-11-17 15:39:42,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 86 transitions, 438 flow [2023-11-17 15:39:42,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 86 transitions, 438 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 15:39:42,916 INFO L231 Difference]: Finished difference. Result has 101 places, 86 transitions, 334 flow [2023-11-17 15:39:42,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=571, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=334, PETRI_PLACES=101, PETRI_TRANSITIONS=86} [2023-11-17 15:39:42,918 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 33 predicate places. [2023-11-17 15:39:42,918 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 86 transitions, 334 flow [2023-11-17 15:39:42,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 214.3846153846154) internal successors, (2787), 13 states have internal predecessors, (2787), 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) [2023-11-17 15:39:42,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:39:42,931 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 3, 2, 2, 1, 1, 1, 1, 1] [2023-11-17 15:39:42,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-17 15:39:43,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:39:43,139 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-17 15:39:43,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:39:43,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1702593493, now seen corresponding path program 2 times [2023-11-17 15:39:43,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:39:43,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716958439] [2023-11-17 15:39:43,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:39:43,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:39:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 15:39:43,164 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-17 15:39:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 15:39:43,197 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-17 15:39:43,197 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-17 15:39:43,197 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-11-17 15:39:43,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-17 15:39:43,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-11-17 15:39:43,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-11-17 15:39:43,198 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-11-17 15:39:43,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 15:39:43,198 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2023-11-17 15:39:43,199 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-17 15:39:43,199 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-17 15:39:43,239 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 15:39:43,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 321 places, 373 transitions, 773 flow [2023-11-17 15:39:43,336 INFO L124 PetriNetUnfolderBase]: 110/697 cut-off events. [2023-11-17 15:39:43,336 INFO L125 PetriNetUnfolderBase]: For 19/22 co-relation queries the response was YES. [2023-11-17 15:39:43,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 697 events. 110/697 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3222 event pairs, 1 based on Foata normal form. 0/576 useless extension candidates. Maximal degree in co-relation 484. Up to 16 conditions per place. [2023-11-17 15:39:43,349 INFO L82 GeneralOperation]: Start removeDead. Operand has 321 places, 373 transitions, 773 flow [2023-11-17 15:39:43,357 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 321 places, 373 transitions, 773 flow [2023-11-17 15:39:43,358 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:39:43,358 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 321 places, 373 transitions, 773 flow [2023-11-17 15:39:43,358 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 321 places, 373 transitions, 773 flow [2023-11-17 15:39:43,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 321 places, 373 transitions, 773 flow [2023-11-17 15:39:43,450 INFO L124 PetriNetUnfolderBase]: 110/697 cut-off events. [2023-11-17 15:39:43,450 INFO L125 PetriNetUnfolderBase]: For 19/22 co-relation queries the response was YES. [2023-11-17 15:39:43,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 697 events. 110/697 cut-off events. For 19/22 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3222 event pairs, 1 based on Foata normal form. 0/576 useless extension candidates. Maximal degree in co-relation 484. Up to 16 conditions per place. [2023-11-17 15:39:43,502 INFO L119 LiptonReduction]: Number of co-enabled transitions 81054 [2023-11-17 15:39:48,389 INFO L134 LiptonReduction]: Checked pairs total: 121990 [2023-11-17 15:39:48,389 INFO L136 LiptonReduction]: Total number of compositions: 354 [2023-11-17 15:39:48,391 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:39:48,391 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=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;@3252010f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:39:48,392 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-17 15:39:48,394 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:39:48,394 INFO L124 PetriNetUnfolderBase]: 6/21 cut-off events. [2023-11-17 15:39:48,394 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:39:48,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:39:48,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-17 15:39:48,395 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-17 15:39:48,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:39:48,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1423512982, now seen corresponding path program 1 times [2023-11-17 15:39:48,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:39:48,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976503375] [2023-11-17 15:39:48,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:39:48,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:39:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:39:48,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:39:48,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:39:48,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976503375] [2023-11-17 15:39:48,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976503375] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:39:48,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:39:48,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:39:48,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943672792] [2023-11-17 15:39:48,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:39:48,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:39:48,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:39:48,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:39:48,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:39:48,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 727 [2023-11-17 15:39:48,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 131 transitions, 289 flow. Second operand has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 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) [2023-11-17 15:39:48,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:39:48,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 727 [2023-11-17 15:39:48,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:40:16,238 INFO L124 PetriNetUnfolderBase]: 318644/440778 cut-off events. [2023-11-17 15:40:16,238 INFO L125 PetriNetUnfolderBase]: For 4163/4163 co-relation queries the response was YES. [2023-11-17 15:40:16,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864564 conditions, 440778 events. 318644/440778 cut-off events. For 4163/4163 co-relation queries the response was YES. Maximal size of possible extension queue 9099. Compared 3305791 event pairs, 303217 based on Foata normal form. 55469/434610 useless extension candidates. Maximal degree in co-relation 108561. Up to 421600 conditions per place. [2023-11-17 15:40:18,033 INFO L140 encePairwiseOnDemand]: 683/727 looper letters, 77 selfloop transitions, 2 changer transitions 0/91 dead transitions. [2023-11-17 15:40:18,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 91 transitions, 367 flow [2023-11-17 15:40:18,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:40:18,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:40:18,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 934 transitions. [2023-11-17 15:40:18,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42824392480513523 [2023-11-17 15:40:18,036 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 934 transitions. [2023-11-17 15:40:18,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 934 transitions. [2023-11-17 15:40:18,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:40:18,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 934 transitions. [2023-11-17 15:40:18,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 311.3333333333333) internal successors, (934), 3 states have internal predecessors, (934), 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) [2023-11-17 15:40:18,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 727.0) internal successors, (2908), 4 states have internal predecessors, (2908), 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) [2023-11-17 15:40:18,042 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 727.0) internal successors, (2908), 4 states have internal predecessors, (2908), 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) [2023-11-17 15:40:18,042 INFO L175 Difference]: Start difference. First operand has 89 places, 131 transitions, 289 flow. Second operand 3 states and 934 transitions. [2023-11-17 15:40:18,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 91 transitions, 367 flow [2023-11-17 15:40:18,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 91 transitions, 367 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 15:40:18,046 INFO L231 Difference]: Finished difference. Result has 92 places, 91 transitions, 219 flow [2023-11-17 15:40:18,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=727, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=219, PETRI_PLACES=92, PETRI_TRANSITIONS=91} [2023-11-17 15:40:18,046 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 3 predicate places. [2023-11-17 15:40:18,046 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 91 transitions, 219 flow [2023-11-17 15:40:18,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 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) [2023-11-17 15:40:18,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:40:18,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:40:18,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 15:40:18,047 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-17 15:40:18,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:40:18,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1358599695, now seen corresponding path program 1 times [2023-11-17 15:40:18,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:40:18,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603666533] [2023-11-17 15:40:18,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:40:18,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:40:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:40:18,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:40:18,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:40:18,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603666533] [2023-11-17 15:40:18,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603666533] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:40:18,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712051973] [2023-11-17 15:40:18,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:40:18,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:40:18,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:40:18,084 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:40:18,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-17 15:40:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:40:18,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-17 15:40:18,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:40:18,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:40:18,184 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:40:18,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712051973] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:40:18,184 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:40:18,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-11-17 15:40:18,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105976878] [2023-11-17 15:40:18,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:40:18,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:40:18,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:40:18,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:40:18,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:40:18,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 727 [2023-11-17 15:40:18,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 91 transitions, 219 flow. Second operand has 3 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 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) [2023-11-17 15:40:18,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:40:18,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 727 [2023-11-17 15:40:18,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:40:43,872 INFO L124 PetriNetUnfolderBase]: 319035/440919 cut-off events. [2023-11-17 15:40:43,872 INFO L125 PetriNetUnfolderBase]: For 4110/4110 co-relation queries the response was YES. [2023-11-17 15:40:44,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864834 conditions, 440919 events. 319035/440919 cut-off events. For 4110/4110 co-relation queries the response was YES. Maximal size of possible extension queue 9034. Compared 3299824 event pairs, 198705 based on Foata normal form. 0/379370 useless extension candidates. Maximal degree in co-relation 864820. Up to 421704 conditions per place. [2023-11-17 15:40:45,952 INFO L140 encePairwiseOnDemand]: 724/727 looper letters, 95 selfloop transitions, 2 changer transitions 0/109 dead transitions. [2023-11-17 15:40:45,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 109 transitions, 449 flow [2023-11-17 15:40:45,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:40:45,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:40:45,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 910 transitions. [2023-11-17 15:40:45,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41723979825768 [2023-11-17 15:40:45,956 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 910 transitions. [2023-11-17 15:40:45,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 910 transitions. [2023-11-17 15:40:45,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:40:45,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 910 transitions. [2023-11-17 15:40:45,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 303.3333333333333) internal successors, (910), 3 states have internal predecessors, (910), 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) [2023-11-17 15:40:45,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 727.0) internal successors, (2908), 4 states have internal predecessors, (2908), 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) [2023-11-17 15:40:45,961 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 727.0) internal successors, (2908), 4 states have internal predecessors, (2908), 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) [2023-11-17 15:40:45,961 INFO L175 Difference]: Start difference. First operand has 92 places, 91 transitions, 219 flow. Second operand 3 states and 910 transitions. [2023-11-17 15:40:45,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 109 transitions, 449 flow [2023-11-17 15:40:45,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 109 transitions, 445 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 15:40:45,965 INFO L231 Difference]: Finished difference. Result has 94 places, 92 transitions, 227 flow [2023-11-17 15:40:45,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=727, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=227, PETRI_PLACES=94, PETRI_TRANSITIONS=92} [2023-11-17 15:40:45,965 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 5 predicate places. [2023-11-17 15:40:45,965 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 92 transitions, 227 flow [2023-11-17 15:40:45,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 273.3333333333333) internal successors, (820), 3 states have internal predecessors, (820), 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) [2023-11-17 15:40:45,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:40:45,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:40:45,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-17 15:40:46,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-17 15:40:46,175 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-11-17 15:40:46,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:40:46,175 INFO L85 PathProgramCache]: Analyzing trace with hash -255671388, now seen corresponding path program 1 times [2023-11-17 15:40:46,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:40:46,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979496184] [2023-11-17 15:40:46,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:40:46,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:40:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:40:46,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:40:46,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:40:46,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979496184] [2023-11-17 15:40:46,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979496184] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:40:46,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169878792] [2023-11-17 15:40:46,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:40:46,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:40:46,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:40:46,215 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:40:46,218 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-17 15:40:46,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:40:46,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 15:40:46,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:40:46,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:40:46,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:40:46,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:40:46,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169878792] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:40:46,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:40:46,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-17 15:40:46,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299150484] [2023-11-17 15:40:46,334 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:40:46,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 15:40:46,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:40:46,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 15:40:46,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-17 15:40:46,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 727 [2023-11-17 15:40:46,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 92 transitions, 227 flow. Second operand has 7 states, 7 states have (on average 273.0) internal successors, (1911), 7 states have internal predecessors, (1911), 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) [2023-11-17 15:40:46,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:40:46,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 727 [2023-11-17 15:40:46,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand