/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 03:08:27,811 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 03:08:27,891 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 03:08:27,898 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 03:08:27,899 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 03:08:27,931 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 03:08:27,932 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 03:08:27,936 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 03:08:27,937 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 03:08:27,941 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 03:08:27,941 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 03:08:27,941 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 03:08:27,942 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 03:08:27,943 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 03:08:27,943 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 03:08:27,943 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 03:08:27,943 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 03:08:27,943 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 03:08:27,944 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 03:08:27,944 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 03:08:27,944 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 03:08:27,944 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 03:08:27,945 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 03:08:27,945 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 03:08:27,945 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 03:08:27,945 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 03:08:27,946 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 03:08:27,946 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 03:08:27,946 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 03:08:27,946 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 03:08:27,947 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 03:08:27,947 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 03:08:27,947 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 03:08:27,948 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 03:08:27,948 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 03:08:27,948 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-24 03:08:28,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 03:08:28,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 03:08:28,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 03:08:28,308 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 03:08:28,308 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 03:08:28,310 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c [2023-08-24 03:08:29,413 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 03:08:29,615 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 03:08:29,615 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c [2023-08-24 03:08:29,622 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b491aa946/740ad00c56974b4c8247fb5100150a52/FLAGc7a3cef6b [2023-08-24 03:08:29,635 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b491aa946/740ad00c56974b4c8247fb5100150a52 [2023-08-24 03:08:29,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 03:08:29,638 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 03:08:29,639 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 03:08:29,639 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 03:08:29,641 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 03:08:29,642 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 03:08:29" (1/1) ... [2023-08-24 03:08:29,643 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12df6af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:08:29, skipping insertion in model container [2023-08-24 03:08:29,643 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 03:08:29" (1/1) ... [2023-08-24 03:08:29,668 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 03:08:29,851 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c[2434,2447] [2023-08-24 03:08:29,863 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 03:08:29,872 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 03:08:29,903 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-sorted.wvr.c[2434,2447] [2023-08-24 03:08:29,910 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 03:08:29,922 INFO L206 MainTranslator]: Completed translation [2023-08-24 03:08:29,923 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:08:29 WrapperNode [2023-08-24 03:08:29,923 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 03:08:29,924 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 03:08:29,924 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 03:08:29,925 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 03:08:29,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:08:29" (1/1) ... [2023-08-24 03:08:29,947 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:08:29" (1/1) ... [2023-08-24 03:08:29,975 INFO L138 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 109 [2023-08-24 03:08:29,975 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 03:08:29,976 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 03:08:29,976 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 03:08:29,976 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 03:08:29,984 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:08:29" (1/1) ... [2023-08-24 03:08:29,984 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:08:29" (1/1) ... [2023-08-24 03:08:29,987 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:08:29" (1/1) ... [2023-08-24 03:08:29,988 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:08:29" (1/1) ... [2023-08-24 03:08:29,993 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:08:29" (1/1) ... [2023-08-24 03:08:29,996 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:08:29" (1/1) ... [2023-08-24 03:08:29,997 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:08:29" (1/1) ... [2023-08-24 03:08:29,998 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:08:29" (1/1) ... [2023-08-24 03:08:30,000 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 03:08:30,001 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 03:08:30,001 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 03:08:30,001 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 03:08:30,002 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:08:29" (1/1) ... [2023-08-24 03:08:30,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 03:08:30,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:08:30,042 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-24 03:08:30,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-24 03:08:30,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 03:08:30,079 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 03:08:30,079 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 03:08:30,080 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 03:08:30,080 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 03:08:30,081 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 03:08:30,081 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 03:08:30,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 03:08:30,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 03:08:30,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 03:08:30,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 03:08:30,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 03:08:30,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 03:08:30,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 03:08:30,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 03:08:30,083 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 03:08:30,200 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 03:08:30,210 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 03:08:30,546 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 03:08:30,553 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 03:08:30,554 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-24 03:08:30,556 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 03:08:30 BoogieIcfgContainer [2023-08-24 03:08:30,556 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 03:08:30,558 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 03:08:30,558 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 03:08:30,571 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 03:08:30,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 03:08:29" (1/3) ... [2023-08-24 03:08:30,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a79d83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 03:08:30, skipping insertion in model container [2023-08-24 03:08:30,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 03:08:29" (2/3) ... [2023-08-24 03:08:30,572 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a79d83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 03:08:30, skipping insertion in model container [2023-08-24 03:08:30,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 03:08:30" (3/3) ... [2023-08-24 03:08:30,574 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sorted.wvr.c [2023-08-24 03:08:30,589 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 03:08:30,590 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 03:08:30,590 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 03:08:30,702 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 03:08:30,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 179 transitions, 382 flow [2023-08-24 03:08:30,878 INFO L124 PetriNetUnfolderBase]: 15/176 cut-off events. [2023-08-24 03:08:30,880 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 03:08:30,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 176 events. 15/176 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 213 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 130. Up to 2 conditions per place. [2023-08-24 03:08:30,886 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 179 transitions, 382 flow [2023-08-24 03:08:30,896 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 166 transitions, 350 flow [2023-08-24 03:08:30,900 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 03:08:30,912 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 166 transitions, 350 flow [2023-08-24 03:08:30,919 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 166 transitions, 350 flow [2023-08-24 03:08:30,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 166 transitions, 350 flow [2023-08-24 03:08:30,970 INFO L124 PetriNetUnfolderBase]: 15/166 cut-off events. [2023-08-24 03:08:30,970 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 03:08:30,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 166 events. 15/166 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 212 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 130. Up to 2 conditions per place. [2023-08-24 03:08:30,976 INFO L119 LiptonReduction]: Number of co-enabled transitions 3840 [2023-08-24 03:08:36,136 INFO L134 LiptonReduction]: Checked pairs total: 4334 [2023-08-24 03:08:36,137 INFO L136 LiptonReduction]: Total number of compositions: 169 [2023-08-24 03:08:36,149 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 03:08:36,155 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5cc138f6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 03:08:36,155 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 03:08:36,162 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 03:08:36,162 INFO L124 PetriNetUnfolderBase]: 6/27 cut-off events. [2023-08-24 03:08:36,162 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 03:08:36,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:08:36,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:08:36,163 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 03:08:36,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:08:36,167 INFO L85 PathProgramCache]: Analyzing trace with hash 633398818, now seen corresponding path program 1 times [2023-08-24 03:08:36,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:08:36,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531318990] [2023-08-24 03:08:36,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:08:36,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:08:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:08:36,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:08:36,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:08:36,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531318990] [2023-08-24 03:08:36,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531318990] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 03:08:36,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 03:08:36,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 03:08:36,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165221979] [2023-08-24 03:08:36,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 03:08:36,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 03:08:36,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:08:36,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 03:08:36,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 03:08:36,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 348 [2023-08-24 03:08:36,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:36,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:08:36,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 348 [2023-08-24 03:08:36,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:08:37,098 INFO L124 PetriNetUnfolderBase]: 753/1007 cut-off events. [2023-08-24 03:08:37,098 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2023-08-24 03:08:37,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2093 conditions, 1007 events. 753/1007 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3530 event pairs, 95 based on Foata normal form. 1/577 useless extension candidates. Maximal degree in co-relation 1735. Up to 824 conditions per place. [2023-08-24 03:08:37,107 INFO L140 encePairwiseOnDemand]: 341/348 looper letters, 38 selfloop transitions, 4 changer transitions 1/46 dead transitions. [2023-08-24 03:08:37,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 46 transitions, 211 flow [2023-08-24 03:08:37,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 03:08:37,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 03:08:37,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2023-08-24 03:08:37,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4779693486590038 [2023-08-24 03:08:37,122 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2023-08-24 03:08:37,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2023-08-24 03:08:37,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:08:37,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2023-08-24 03:08:37,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:37,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 348.0) internal successors, (1392), 4 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:37,135 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 348.0) internal successors, (1392), 4 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:37,137 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 74 flow. Second operand 3 states and 499 transitions. [2023-08-24 03:08:37,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 46 transitions, 211 flow [2023-08-24 03:08:37,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 46 transitions, 189 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-24 03:08:37,142 INFO L231 Difference]: Finished difference. Result has 29 places, 31 transitions, 92 flow [2023-08-24 03:08:37,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=29, PETRI_TRANSITIONS=31} [2023-08-24 03:08:37,147 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -3 predicate places. [2023-08-24 03:08:37,147 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 31 transitions, 92 flow [2023-08-24 03:08:37,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:37,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:08:37,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:08:37,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 03:08:37,148 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 03:08:37,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:08:37,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1182510978, now seen corresponding path program 1 times [2023-08-24 03:08:37,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:08:37,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10712266] [2023-08-24 03:08:37,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:08:37,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:08:37,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:08:37,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:08:37,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:08:37,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10712266] [2023-08-24 03:08:37,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10712266] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 03:08:37,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 03:08:37,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 03:08:37,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157631110] [2023-08-24 03:08:37,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 03:08:37,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 03:08:37,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:08:37,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 03:08:37,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 03:08:37,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 348 [2023-08-24 03:08:37,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 31 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 137.8) internal successors, (689), 5 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:37,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:08:37,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 348 [2023-08-24 03:08:37,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:08:37,538 INFO L124 PetriNetUnfolderBase]: 772/1044 cut-off events. [2023-08-24 03:08:37,539 INFO L125 PetriNetUnfolderBase]: For 212/214 co-relation queries the response was YES. [2023-08-24 03:08:37,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2533 conditions, 1044 events. 772/1044 cut-off events. For 212/214 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3797 event pairs, 383 based on Foata normal form. 1/851 useless extension candidates. Maximal degree in co-relation 499. Up to 1040 conditions per place. [2023-08-24 03:08:37,546 INFO L140 encePairwiseOnDemand]: 345/348 looper letters, 28 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-08-24 03:08:37,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 32 transitions, 154 flow [2023-08-24 03:08:37,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 03:08:37,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 03:08:37,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 430 transitions. [2023-08-24 03:08:37,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4118773946360153 [2023-08-24 03:08:37,552 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 430 transitions. [2023-08-24 03:08:37,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 430 transitions. [2023-08-24 03:08:37,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:08:37,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 430 transitions. [2023-08-24 03:08:37,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:37,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 348.0) internal successors, (1392), 4 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:37,558 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 348.0) internal successors, (1392), 4 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:37,558 INFO L175 Difference]: Start difference. First operand has 29 places, 31 transitions, 92 flow. Second operand 3 states and 430 transitions. [2023-08-24 03:08:37,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 32 transitions, 154 flow [2023-08-24 03:08:37,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 32 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 03:08:37,561 INFO L231 Difference]: Finished difference. Result has 31 places, 32 transitions, 100 flow [2023-08-24 03:08:37,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=31, PETRI_TRANSITIONS=32} [2023-08-24 03:08:37,562 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -1 predicate places. [2023-08-24 03:08:37,562 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 32 transitions, 100 flow [2023-08-24 03:08:37,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.8) internal successors, (689), 5 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:37,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:08:37,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:08:37,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 03:08:37,565 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 03:08:37,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:08:37,572 INFO L85 PathProgramCache]: Analyzing trace with hash 938378252, now seen corresponding path program 1 times [2023-08-24 03:08:37,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:08:37,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758434378] [2023-08-24 03:08:37,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:08:37,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:08:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:08:37,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:08:37,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:08:37,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758434378] [2023-08-24 03:08:37,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758434378] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:08:37,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992391960] [2023-08-24 03:08:37,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:08:37,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:08:37,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:08:37,846 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:08:37,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 03:08:37,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:08:37,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-24 03:08:37,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:08:38,196 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:08:38,196 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:08:38,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:08:38,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992391960] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:08:38,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:08:38,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-24 03:08:38,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672039295] [2023-08-24 03:08:38,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:08:38,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-24 03:08:38,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:08:38,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-24 03:08:38,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-08-24 03:08:38,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 348 [2023-08-24 03:08:38,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 32 transitions, 100 flow. Second operand has 13 states, 13 states have (on average 137.46153846153845) internal successors, (1787), 13 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:38,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:08:38,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 348 [2023-08-24 03:08:38,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:08:38,715 INFO L124 PetriNetUnfolderBase]: 1451/1990 cut-off events. [2023-08-24 03:08:38,715 INFO L125 PetriNetUnfolderBase]: For 432/434 co-relation queries the response was YES. [2023-08-24 03:08:38,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4634 conditions, 1990 events. 1451/1990 cut-off events. For 432/434 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 8410 event pairs, 642 based on Foata normal form. 66/1680 useless extension candidates. Maximal degree in co-relation 4622. Up to 1040 conditions per place. [2023-08-24 03:08:38,726 INFO L140 encePairwiseOnDemand]: 342/348 looper letters, 65 selfloop transitions, 6 changer transitions 0/73 dead transitions. [2023-08-24 03:08:38,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 73 transitions, 364 flow [2023-08-24 03:08:38,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 03:08:38,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 03:08:38,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 869 transitions. [2023-08-24 03:08:38,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41618773946360155 [2023-08-24 03:08:38,729 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 869 transitions. [2023-08-24 03:08:38,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 869 transitions. [2023-08-24 03:08:38,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:08:38,730 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 869 transitions. [2023-08-24 03:08:38,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 144.83333333333334) internal successors, (869), 6 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:38,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 348.0) internal successors, (2436), 7 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:38,735 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 348.0) internal successors, (2436), 7 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:38,735 INFO L175 Difference]: Start difference. First operand has 31 places, 32 transitions, 100 flow. Second operand 6 states and 869 transitions. [2023-08-24 03:08:38,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 73 transitions, 364 flow [2023-08-24 03:08:38,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 73 transitions, 360 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 03:08:38,739 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 142 flow [2023-08-24 03:08:38,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=142, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2023-08-24 03:08:38,740 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 6 predicate places. [2023-08-24 03:08:38,740 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 142 flow [2023-08-24 03:08:38,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 137.46153846153845) internal successors, (1787), 13 states have internal predecessors, (1787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:38,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:08:38,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:08:38,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-24 03:08:38,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:08:38,949 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 03:08:38,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:08:38,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1086963879, now seen corresponding path program 1 times [2023-08-24 03:08:38,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:08:38,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149126076] [2023-08-24 03:08:38,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:08:38,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:08:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:08:39,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:08:39,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:08:39,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149126076] [2023-08-24 03:08:39,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149126076] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:08:39,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042242819] [2023-08-24 03:08:39,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:08:39,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:08:39,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:08:39,063 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:08:39,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 03:08:39,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:08:39,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-24 03:08:39,165 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:08:39,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:08:39,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:08:39,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:08:39,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042242819] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:08:39,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:08:39,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-24 03:08:39,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961838136] [2023-08-24 03:08:39,248 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:08:39,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 03:08:39,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:08:39,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 03:08:39,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2023-08-24 03:08:39,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 348 [2023-08-24 03:08:39,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 142 flow. Second operand has 12 states, 12 states have (on average 140.58333333333334) internal successors, (1687), 12 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:39,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:08:39,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 348 [2023-08-24 03:08:39,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:08:39,469 INFO L124 PetriNetUnfolderBase]: 945/1384 cut-off events. [2023-08-24 03:08:39,469 INFO L125 PetriNetUnfolderBase]: For 643/725 co-relation queries the response was YES. [2023-08-24 03:08:39,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3512 conditions, 1384 events. 945/1384 cut-off events. For 643/725 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 6087 event pairs, 439 based on Foata normal form. 88/1236 useless extension candidates. Maximal degree in co-relation 2475. Up to 951 conditions per place. [2023-08-24 03:08:39,477 INFO L140 encePairwiseOnDemand]: 341/348 looper letters, 57 selfloop transitions, 6 changer transitions 0/66 dead transitions. [2023-08-24 03:08:39,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 66 transitions, 354 flow [2023-08-24 03:08:39,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 03:08:39,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 03:08:39,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 888 transitions. [2023-08-24 03:08:39,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42528735632183906 [2023-08-24 03:08:39,480 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 888 transitions. [2023-08-24 03:08:39,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 888 transitions. [2023-08-24 03:08:39,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:08:39,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 888 transitions. [2023-08-24 03:08:39,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 148.0) internal successors, (888), 6 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:39,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 348.0) internal successors, (2436), 7 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:39,486 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 348.0) internal successors, (2436), 7 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:39,486 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 142 flow. Second operand 6 states and 888 transitions. [2023-08-24 03:08:39,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 66 transitions, 354 flow [2023-08-24 03:08:39,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 66 transitions, 344 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-24 03:08:39,489 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 161 flow [2023-08-24 03:08:39,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=161, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-08-24 03:08:39,490 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 11 predicate places. [2023-08-24 03:08:39,490 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 161 flow [2023-08-24 03:08:39,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 140.58333333333334) internal successors, (1687), 12 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:39,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:08:39,491 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:08:39,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-24 03:08:39,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-24 03:08:39,697 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 03:08:39,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:08:39,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1130483808, now seen corresponding path program 2 times [2023-08-24 03:08:39,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:08:39,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450672676] [2023-08-24 03:08:39,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:08:39,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:08:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:08:39,826 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:08:39,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:08:39,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450672676] [2023-08-24 03:08:39,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450672676] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:08:39,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956034479] [2023-08-24 03:08:39,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 03:08:39,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:08:39,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:08:39,828 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) [2023-08-24 03:08:39,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-24 03:08:39,974 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 03:08:39,974 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:08:39,976 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-24 03:08:39,978 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:08:40,024 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:08:40,024 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:08:40,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:08:40,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956034479] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 03:08:40,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 03:08:40,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12 [2023-08-24 03:08:40,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436641642] [2023-08-24 03:08:40,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 03:08:40,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 03:08:40,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:08:40,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 03:08:40,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-08-24 03:08:40,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 348 [2023-08-24 03:08:40,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 161 flow. Second operand has 6 states, 6 states have (on average 141.5) internal successors, (849), 6 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:40,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:08:40,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 348 [2023-08-24 03:08:40,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:08:40,325 INFO L124 PetriNetUnfolderBase]: 1008/1427 cut-off events. [2023-08-24 03:08:40,325 INFO L125 PetriNetUnfolderBase]: For 1075/1147 co-relation queries the response was YES. [2023-08-24 03:08:40,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4067 conditions, 1427 events. 1008/1427 cut-off events. For 1075/1147 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 6003 event pairs, 361 based on Foata normal form. 69/1291 useless extension candidates. Maximal degree in co-relation 2874. Up to 596 conditions per place. [2023-08-24 03:08:40,335 INFO L140 encePairwiseOnDemand]: 340/348 looper letters, 58 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2023-08-24 03:08:40,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 70 transitions, 397 flow [2023-08-24 03:08:40,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 03:08:40,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 03:08:40,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 890 transitions. [2023-08-24 03:08:40,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42624521072796934 [2023-08-24 03:08:40,338 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 890 transitions. [2023-08-24 03:08:40,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 890 transitions. [2023-08-24 03:08:40,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:08:40,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 890 transitions. [2023-08-24 03:08:40,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 148.33333333333334) internal successors, (890), 6 states have internal predecessors, (890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:40,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 348.0) internal successors, (2436), 7 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:40,343 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 348.0) internal successors, (2436), 7 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:40,343 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 161 flow. Second operand 6 states and 890 transitions. [2023-08-24 03:08:40,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 70 transitions, 397 flow [2023-08-24 03:08:40,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 70 transitions, 390 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 03:08:40,347 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 199 flow [2023-08-24 03:08:40,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=199, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2023-08-24 03:08:40,348 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 15 predicate places. [2023-08-24 03:08:40,348 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 199 flow [2023-08-24 03:08:40,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 141.5) internal successors, (849), 6 states have internal predecessors, (849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:40,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:08:40,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:08:40,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-24 03:08:40,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:08:40,553 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 03:08:40,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:08:40,554 INFO L85 PathProgramCache]: Analyzing trace with hash -118350411, now seen corresponding path program 1 times [2023-08-24 03:08:40,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:08:40,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376412177] [2023-08-24 03:08:40,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:08:40,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:08:40,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:08:40,775 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:08:40,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:08:40,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376412177] [2023-08-24 03:08:40,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376412177] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:08:40,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752661562] [2023-08-24 03:08:40,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:08:40,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:08:40,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:08:40,777 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) [2023-08-24 03:08:40,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-24 03:08:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:08:40,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-24 03:08:40,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:08:40,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:08:40,958 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:08:41,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:08:41,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752661562] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:08:41,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:08:41,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-08-24 03:08:41,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346605081] [2023-08-24 03:08:41,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:08:41,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-24 03:08:41,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:08:41,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-24 03:08:41,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-08-24 03:08:41,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 348 [2023-08-24 03:08:41,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 199 flow. Second operand has 14 states, 14 states have (on average 135.71428571428572) internal successors, (1900), 14 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:41,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:08:41,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 348 [2023-08-24 03:08:41,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:08:41,296 INFO L124 PetriNetUnfolderBase]: 706/1020 cut-off events. [2023-08-24 03:08:41,297 INFO L125 PetriNetUnfolderBase]: For 1638/1836 co-relation queries the response was YES. [2023-08-24 03:08:41,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3275 conditions, 1020 events. 706/1020 cut-off events. For 1638/1836 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3735 event pairs, 401 based on Foata normal form. 198/1163 useless extension candidates. Maximal degree in co-relation 2752. Up to 846 conditions per place. [2023-08-24 03:08:41,303 INFO L140 encePairwiseOnDemand]: 342/348 looper letters, 31 selfloop transitions, 3 changer transitions 26/61 dead transitions. [2023-08-24 03:08:41,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 61 transitions, 379 flow [2023-08-24 03:08:41,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 03:08:41,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 03:08:41,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 853 transitions. [2023-08-24 03:08:41,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4085249042145594 [2023-08-24 03:08:41,306 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 853 transitions. [2023-08-24 03:08:41,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 853 transitions. [2023-08-24 03:08:41,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:08:41,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 853 transitions. [2023-08-24 03:08:41,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 142.16666666666666) internal successors, (853), 6 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:41,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 348.0) internal successors, (2436), 7 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:41,311 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 348.0) internal successors, (2436), 7 states have internal predecessors, (2436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:41,312 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 199 flow. Second operand 6 states and 853 transitions. [2023-08-24 03:08:41,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 61 transitions, 379 flow [2023-08-24 03:08:41,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 61 transitions, 366 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-24 03:08:41,316 INFO L231 Difference]: Finished difference. Result has 50 places, 35 transitions, 168 flow [2023-08-24 03:08:41,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=50, PETRI_TRANSITIONS=35} [2023-08-24 03:08:41,319 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 18 predicate places. [2023-08-24 03:08:41,319 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 35 transitions, 168 flow [2023-08-24 03:08:41,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 135.71428571428572) internal successors, (1900), 14 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:41,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:08:41,320 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:08:41,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-24 03:08:41,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:08:41,526 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 03:08:41,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:08:41,526 INFO L85 PathProgramCache]: Analyzing trace with hash -2121996383, now seen corresponding path program 2 times [2023-08-24 03:08:41,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:08:41,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553952358] [2023-08-24 03:08:41,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:08:41,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:08:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:08:41,744 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:08:41,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:08:41,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553952358] [2023-08-24 03:08:41,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553952358] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:08:41,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983028896] [2023-08-24 03:08:41,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 03:08:41,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:08:41,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:08:41,746 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) [2023-08-24 03:08:41,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-24 03:08:41,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 03:08:41,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:08:41,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-24 03:08:41,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:08:41,953 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:08:41,954 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:08:42,026 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:08:42,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983028896] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:08:42,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:08:42,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2023-08-24 03:08:42,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585614032] [2023-08-24 03:08:42,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:08:42,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-24 03:08:42,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:08:42,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-24 03:08:42,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2023-08-24 03:08:42,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 348 [2023-08-24 03:08:42,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 35 transitions, 168 flow. Second operand has 17 states, 17 states have (on average 130.41176470588235) internal successors, (2217), 17 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:42,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:08:42,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 348 [2023-08-24 03:08:42,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:08:42,427 INFO L124 PetriNetUnfolderBase]: 947/1306 cut-off events. [2023-08-24 03:08:42,427 INFO L125 PetriNetUnfolderBase]: For 2521/2711 co-relation queries the response was YES. [2023-08-24 03:08:42,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4523 conditions, 1306 events. 947/1306 cut-off events. For 2521/2711 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4845 event pairs, 242 based on Foata normal form. 204/1422 useless extension candidates. Maximal degree in co-relation 4498. Up to 715 conditions per place. [2023-08-24 03:08:42,436 INFO L140 encePairwiseOnDemand]: 338/348 looper letters, 75 selfloop transitions, 12 changer transitions 0/88 dead transitions. [2023-08-24 03:08:42,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 88 transitions, 610 flow [2023-08-24 03:08:42,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 03:08:42,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 03:08:42,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1224 transitions. [2023-08-24 03:08:42,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39080459770114945 [2023-08-24 03:08:42,441 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1224 transitions. [2023-08-24 03:08:42,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1224 transitions. [2023-08-24 03:08:42,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:08:42,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1224 transitions. [2023-08-24 03:08:42,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 136.0) internal successors, (1224), 9 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:42,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 348.0) internal successors, (3480), 10 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:42,450 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 348.0) internal successors, (3480), 10 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:42,450 INFO L175 Difference]: Start difference. First operand has 50 places, 35 transitions, 168 flow. Second operand 9 states and 1224 transitions. [2023-08-24 03:08:42,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 88 transitions, 610 flow [2023-08-24 03:08:42,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 88 transitions, 524 flow, removed 40 selfloop flow, removed 8 redundant places. [2023-08-24 03:08:42,458 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 206 flow [2023-08-24 03:08:42,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=206, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2023-08-24 03:08:42,459 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 15 predicate places. [2023-08-24 03:08:42,460 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 206 flow [2023-08-24 03:08:42,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 130.41176470588235) internal successors, (2217), 17 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:42,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:08:42,463 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:08:42,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-24 03:08:42,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:08:42,668 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 03:08:42,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:08:42,669 INFO L85 PathProgramCache]: Analyzing trace with hash -920815075, now seen corresponding path program 3 times [2023-08-24 03:08:42,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:08:42,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722953971] [2023-08-24 03:08:42,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:08:42,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:08:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:08:42,824 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:08:42,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:08:42,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722953971] [2023-08-24 03:08:42,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722953971] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:08:42,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572986236] [2023-08-24 03:08:42,825 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 03:08:42,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:08:42,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:08:42,826 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) [2023-08-24 03:08:42,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-24 03:08:42,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-24 03:08:42,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:08:42,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-24 03:08:42,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:08:43,029 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:08:43,029 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:08:43,126 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:08:43,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572986236] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 03:08:43,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 03:08:43,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 16 [2023-08-24 03:08:43,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480806929] [2023-08-24 03:08:43,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 03:08:43,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 03:08:43,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:08:43,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 03:08:43,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-08-24 03:08:43,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 348 [2023-08-24 03:08:43,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 206 flow. Second operand has 8 states, 8 states have (on average 130.875) internal successors, (1047), 8 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:43,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:08:43,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 348 [2023-08-24 03:08:43,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:08:43,479 INFO L124 PetriNetUnfolderBase]: 1354/1861 cut-off events. [2023-08-24 03:08:43,479 INFO L125 PetriNetUnfolderBase]: For 2957/3187 co-relation queries the response was YES. [2023-08-24 03:08:43,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6330 conditions, 1861 events. 1354/1861 cut-off events. For 2957/3187 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 7047 event pairs, 292 based on Foata normal form. 242/2103 useless extension candidates. Maximal degree in co-relation 6297. Up to 877 conditions per place. [2023-08-24 03:08:43,494 INFO L140 encePairwiseOnDemand]: 338/348 looper letters, 98 selfloop transitions, 28 changer transitions 0/127 dead transitions. [2023-08-24 03:08:43,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 127 transitions, 882 flow [2023-08-24 03:08:43,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-24 03:08:43,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-24 03:08:43,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1372 transitions. [2023-08-24 03:08:43,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39425287356321836 [2023-08-24 03:08:43,499 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1372 transitions. [2023-08-24 03:08:43,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1372 transitions. [2023-08-24 03:08:43,500 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:08:43,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1372 transitions. [2023-08-24 03:08:43,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 137.2) internal successors, (1372), 10 states have internal predecessors, (1372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:43,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 348.0) internal successors, (3828), 11 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:43,508 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 348.0) internal successors, (3828), 11 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:43,508 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 206 flow. Second operand 10 states and 1372 transitions. [2023-08-24 03:08:43,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 127 transitions, 882 flow [2023-08-24 03:08:43,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 127 transitions, 859 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-24 03:08:43,514 INFO L231 Difference]: Finished difference. Result has 56 places, 58 transitions, 379 flow [2023-08-24 03:08:43,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=379, PETRI_PLACES=56, PETRI_TRANSITIONS=58} [2023-08-24 03:08:43,517 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 24 predicate places. [2023-08-24 03:08:43,517 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 58 transitions, 379 flow [2023-08-24 03:08:43,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 130.875) internal successors, (1047), 8 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:43,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:08:43,518 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:08:43,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-24 03:08:43,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:08:43,721 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 03:08:43,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:08:43,721 INFO L85 PathProgramCache]: Analyzing trace with hash -406405297, now seen corresponding path program 4 times [2023-08-24 03:08:43,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:08:43,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651589405] [2023-08-24 03:08:43,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:08:43,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:08:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:08:43,888 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:08:43,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:08:43,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651589405] [2023-08-24 03:08:43,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651589405] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:08:43,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933752190] [2023-08-24 03:08:43,888 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 03:08:43,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:08:43,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:08:43,889 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) [2023-08-24 03:08:43,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-24 03:08:43,995 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 03:08:43,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:08:43,997 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-24 03:08:43,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:08:44,089 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:08:44,089 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:08:44,183 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:08:44,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933752190] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:08:44,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:08:44,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 17 [2023-08-24 03:08:44,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112652447] [2023-08-24 03:08:44,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:08:44,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-24 03:08:44,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:08:44,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-24 03:08:44,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2023-08-24 03:08:44,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 348 [2023-08-24 03:08:44,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 58 transitions, 379 flow. Second operand has 18 states, 18 states have (on average 130.72222222222223) internal successors, (2353), 18 states have internal predecessors, (2353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:44,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:08:44,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 348 [2023-08-24 03:08:44,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:08:44,890 INFO L124 PetriNetUnfolderBase]: 1754/2409 cut-off events. [2023-08-24 03:08:44,890 INFO L125 PetriNetUnfolderBase]: For 6365/6661 co-relation queries the response was YES. [2023-08-24 03:08:44,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9856 conditions, 2409 events. 1754/2409 cut-off events. For 6365/6661 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 9642 event pairs, 424 based on Foata normal form. 310/2719 useless extension candidates. Maximal degree in co-relation 9819. Up to 1431 conditions per place. [2023-08-24 03:08:44,911 INFO L140 encePairwiseOnDemand]: 336/348 looper letters, 114 selfloop transitions, 52 changer transitions 0/167 dead transitions. [2023-08-24 03:08:44,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 167 transitions, 1351 flow [2023-08-24 03:08:44,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-24 03:08:44,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-24 03:08:44,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1645 transitions. [2023-08-24 03:08:44,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939176245210728 [2023-08-24 03:08:44,916 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1645 transitions. [2023-08-24 03:08:44,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1645 transitions. [2023-08-24 03:08:44,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:08:44,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1645 transitions. [2023-08-24 03:08:44,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 137.08333333333334) internal successors, (1645), 12 states have internal predecessors, (1645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:44,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 348.0) internal successors, (4524), 13 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:44,929 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 348.0) internal successors, (4524), 13 states have internal predecessors, (4524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:44,929 INFO L175 Difference]: Start difference. First operand has 56 places, 58 transitions, 379 flow. Second operand 12 states and 1645 transitions. [2023-08-24 03:08:44,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 167 transitions, 1351 flow [2023-08-24 03:08:44,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 167 transitions, 1290 flow, removed 28 selfloop flow, removed 3 redundant places. [2023-08-24 03:08:44,956 INFO L231 Difference]: Finished difference. Result has 69 places, 92 transitions, 800 flow [2023-08-24 03:08:44,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=800, PETRI_PLACES=69, PETRI_TRANSITIONS=92} [2023-08-24 03:08:44,957 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 37 predicate places. [2023-08-24 03:08:44,957 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 92 transitions, 800 flow [2023-08-24 03:08:44,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 130.72222222222223) internal successors, (2353), 18 states have internal predecessors, (2353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:44,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:08:44,958 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:08:44,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-24 03:08:45,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:08:45,163 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 03:08:45,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:08:45,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1150045141, now seen corresponding path program 5 times [2023-08-24 03:08:45,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:08:45,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496256023] [2023-08-24 03:08:45,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:08:45,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:08:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:08:45,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:08:45,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:08:45,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496256023] [2023-08-24 03:08:45,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496256023] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:08:45,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860314855] [2023-08-24 03:08:45,325 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 03:08:45,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:08:45,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:08:45,326 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) [2023-08-24 03:08:45,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-24 03:08:45,429 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 03:08:45,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:08:45,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-24 03:08:45,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:08:45,500 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 03:08:45,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:08:45,571 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 03:08:45,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860314855] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:08:45,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:08:45,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2023-08-24 03:08:45,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184492720] [2023-08-24 03:08:45,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:08:45,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-24 03:08:45,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:08:45,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-24 03:08:45,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-08-24 03:08:45,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 348 [2023-08-24 03:08:45,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 92 transitions, 800 flow. Second operand has 15 states, 15 states have (on average 124.46666666666667) internal successors, (1867), 15 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:45,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:08:45,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 348 [2023-08-24 03:08:45,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:08:46,626 INFO L124 PetriNetUnfolderBase]: 2102/2900 cut-off events. [2023-08-24 03:08:46,626 INFO L125 PetriNetUnfolderBase]: For 10947/10947 co-relation queries the response was YES. [2023-08-24 03:08:46,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13832 conditions, 2900 events. 2102/2900 cut-off events. For 10947/10947 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 11664 event pairs, 141 based on Foata normal form. 16/2916 useless extension candidates. Maximal degree in co-relation 13788. Up to 1091 conditions per place. [2023-08-24 03:08:46,658 INFO L140 encePairwiseOnDemand]: 334/348 looper letters, 171 selfloop transitions, 148 changer transitions 0/319 dead transitions. [2023-08-24 03:08:46,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 319 transitions, 3081 flow [2023-08-24 03:08:46,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-24 03:08:46,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-24 03:08:46,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2999 transitions. [2023-08-24 03:08:46,666 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.374687656171914 [2023-08-24 03:08:46,666 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2999 transitions. [2023-08-24 03:08:46,666 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2999 transitions. [2023-08-24 03:08:46,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:08:46,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2999 transitions. [2023-08-24 03:08:46,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 130.3913043478261) internal successors, (2999), 23 states have internal predecessors, (2999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:46,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 348.0) internal successors, (8352), 24 states have internal predecessors, (8352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:46,697 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 348.0) internal successors, (8352), 24 states have internal predecessors, (8352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:46,697 INFO L175 Difference]: Start difference. First operand has 69 places, 92 transitions, 800 flow. Second operand 23 states and 2999 transitions. [2023-08-24 03:08:46,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 319 transitions, 3081 flow [2023-08-24 03:08:46,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 319 transitions, 2954 flow, removed 32 selfloop flow, removed 5 redundant places. [2023-08-24 03:08:46,811 INFO L231 Difference]: Finished difference. Result has 92 places, 192 transitions, 2087 flow [2023-08-24 03:08:46,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2087, PETRI_PLACES=92, PETRI_TRANSITIONS=192} [2023-08-24 03:08:46,812 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 60 predicate places. [2023-08-24 03:08:46,813 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 192 transitions, 2087 flow [2023-08-24 03:08:46,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 124.46666666666667) internal successors, (1867), 15 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:46,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:08:46,813 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:08:46,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-24 03:08:47,018 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,SelfDestructingSolverStorable9 [2023-08-24 03:08:47,019 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 03:08:47,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:08:47,019 INFO L85 PathProgramCache]: Analyzing trace with hash 449867203, now seen corresponding path program 6 times [2023-08-24 03:08:47,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:08:47,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374208753] [2023-08-24 03:08:47,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:08:47,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:08:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:08:47,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:08:47,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:08:47,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374208753] [2023-08-24 03:08:47,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374208753] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:08:47,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182546320] [2023-08-24 03:08:47,181 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 03:08:47,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:08:47,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:08:47,182 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) [2023-08-24 03:08:47,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-24 03:08:47,314 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-24 03:08:47,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:08:47,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-24 03:08:47,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:08:47,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:08:47,410 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:08:47,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:08:47,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182546320] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 03:08:47,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 03:08:47,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 18 [2023-08-24 03:08:47,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318687317] [2023-08-24 03:08:47,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 03:08:47,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 03:08:47,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:08:47,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 03:08:47,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2023-08-24 03:08:47,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 348 [2023-08-24 03:08:47,505 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 192 transitions, 2087 flow. Second operand has 8 states, 8 states have (on average 130.875) internal successors, (1047), 8 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:47,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:08:47,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 348 [2023-08-24 03:08:47,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:08:47,991 INFO L124 PetriNetUnfolderBase]: 2028/2793 cut-off events. [2023-08-24 03:08:47,992 INFO L125 PetriNetUnfolderBase]: For 11641/11686 co-relation queries the response was YES. [2023-08-24 03:08:48,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14579 conditions, 2793 events. 2028/2793 cut-off events. For 11641/11686 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11055 event pairs, 350 based on Foata normal form. 59/2851 useless extension candidates. Maximal degree in co-relation 14528. Up to 1419 conditions per place. [2023-08-24 03:08:48,021 INFO L140 encePairwiseOnDemand]: 338/348 looper letters, 169 selfloop transitions, 81 changer transitions 0/259 dead transitions. [2023-08-24 03:08:48,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 259 transitions, 2958 flow [2023-08-24 03:08:48,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-24 03:08:48,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-24 03:08:48,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1374 transitions. [2023-08-24 03:08:48,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39482758620689656 [2023-08-24 03:08:48,025 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1374 transitions. [2023-08-24 03:08:48,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1374 transitions. [2023-08-24 03:08:48,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:08:48,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1374 transitions. [2023-08-24 03:08:48,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 137.4) internal successors, (1374), 10 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:48,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 348.0) internal successors, (3828), 11 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:48,033 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 348.0) internal successors, (3828), 11 states have internal predecessors, (3828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:48,033 INFO L175 Difference]: Start difference. First operand has 92 places, 192 transitions, 2087 flow. Second operand 10 states and 1374 transitions. [2023-08-24 03:08:48,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 259 transitions, 2958 flow [2023-08-24 03:08:48,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 259 transitions, 2867 flow, removed 42 selfloop flow, removed 4 redundant places. [2023-08-24 03:08:48,114 INFO L231 Difference]: Finished difference. Result has 96 places, 191 transitions, 2148 flow [2023-08-24 03:08:48,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=1986, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2148, PETRI_PLACES=96, PETRI_TRANSITIONS=191} [2023-08-24 03:08:48,114 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 64 predicate places. [2023-08-24 03:08:48,115 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 191 transitions, 2148 flow [2023-08-24 03:08:48,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 130.875) internal successors, (1047), 8 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:48,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:08:48,115 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:08:48,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-24 03:08:48,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:08:48,321 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 03:08:48,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:08:48,321 INFO L85 PathProgramCache]: Analyzing trace with hash 254297689, now seen corresponding path program 7 times [2023-08-24 03:08:48,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:08:48,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353603392] [2023-08-24 03:08:48,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:08:48,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:08:48,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:08:48,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:08:48,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:08:48,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353603392] [2023-08-24 03:08:48,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353603392] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:08:48,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83004412] [2023-08-24 03:08:48,479 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 03:08:48,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:08:48,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:08:48,480 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:08:48,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-24 03:08:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:08:48,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-24 03:08:48,592 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:08:48,678 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:08:48,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:08:48,774 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:08:48,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83004412] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 03:08:48,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 03:08:48,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 18 [2023-08-24 03:08:48,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090003488] [2023-08-24 03:08:48,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 03:08:48,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 03:08:48,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:08:48,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 03:08:48,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-08-24 03:08:48,777 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 348 [2023-08-24 03:08:48,778 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 191 transitions, 2148 flow. Second operand has 8 states, 8 states have (on average 130.875) internal successors, (1047), 8 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:48,778 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:08:48,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 348 [2023-08-24 03:08:48,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:08:49,302 INFO L124 PetriNetUnfolderBase]: 2004/2750 cut-off events. [2023-08-24 03:08:49,302 INFO L125 PetriNetUnfolderBase]: For 12619/12661 co-relation queries the response was YES. [2023-08-24 03:08:49,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14836 conditions, 2750 events. 2004/2750 cut-off events. For 12619/12661 co-relation queries the response was YES. Maximal size of possible extension queue 135. Compared 10768 event pairs, 283 based on Foata normal form. 56/2805 useless extension candidates. Maximal degree in co-relation 14785. Up to 1068 conditions per place. [2023-08-24 03:08:49,328 INFO L140 encePairwiseOnDemand]: 338/348 looper letters, 116 selfloop transitions, 114 changer transitions 0/238 dead transitions. [2023-08-24 03:08:49,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 238 transitions, 2823 flow [2023-08-24 03:08:49,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 03:08:49,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 03:08:49,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1237 transitions. [2023-08-24 03:08:49,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3949553001277139 [2023-08-24 03:08:49,334 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1237 transitions. [2023-08-24 03:08:49,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1237 transitions. [2023-08-24 03:08:49,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:08:49,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1237 transitions. [2023-08-24 03:08:49,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 137.44444444444446) internal successors, (1237), 9 states have internal predecessors, (1237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:49,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 348.0) internal successors, (3480), 10 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:49,342 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 348.0) internal successors, (3480), 10 states have internal predecessors, (3480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:49,342 INFO L175 Difference]: Start difference. First operand has 96 places, 191 transitions, 2148 flow. Second operand 9 states and 1237 transitions. [2023-08-24 03:08:49,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 238 transitions, 2823 flow [2023-08-24 03:08:49,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 238 transitions, 2785 flow, removed 14 selfloop flow, removed 4 redundant places. [2023-08-24 03:08:49,431 INFO L231 Difference]: Finished difference. Result has 98 places, 187 transitions, 2294 flow [2023-08-24 03:08:49,431 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=2066, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2294, PETRI_PLACES=98, PETRI_TRANSITIONS=187} [2023-08-24 03:08:49,432 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 66 predicate places. [2023-08-24 03:08:49,432 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 187 transitions, 2294 flow [2023-08-24 03:08:49,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 130.875) internal successors, (1047), 8 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:49,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:08:49,432 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:08:49,437 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-24 03:08:49,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-24 03:08:49,637 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 03:08:49,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:08:49,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1850337577, now seen corresponding path program 1 times [2023-08-24 03:08:49,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:08:49,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602343563] [2023-08-24 03:08:49,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:08:49,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:08:49,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:08:49,704 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 03:08:49,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:08:49,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602343563] [2023-08-24 03:08:49,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602343563] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 03:08:49,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 03:08:49,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 03:08:49,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823284131] [2023-08-24 03:08:49,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 03:08:49,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 03:08:49,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:08:49,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 03:08:49,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 03:08:49,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 348 [2023-08-24 03:08:49,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 187 transitions, 2294 flow. Second operand has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:49,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:08:49,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 348 [2023-08-24 03:08:49,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:08:50,066 INFO L124 PetriNetUnfolderBase]: 1871/2603 cut-off events. [2023-08-24 03:08:50,066 INFO L125 PetriNetUnfolderBase]: For 17412/17922 co-relation queries the response was YES. [2023-08-24 03:08:50,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15153 conditions, 2603 events. 1871/2603 cut-off events. For 17412/17922 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 11322 event pairs, 449 based on Foata normal form. 306/2826 useless extension candidates. Maximal degree in co-relation 15101. Up to 1623 conditions per place. [2023-08-24 03:08:50,088 INFO L140 encePairwiseOnDemand]: 345/348 looper letters, 230 selfloop transitions, 3 changer transitions 0/260 dead transitions. [2023-08-24 03:08:50,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 260 transitions, 3654 flow [2023-08-24 03:08:50,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 03:08:50,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 03:08:50,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 516 transitions. [2023-08-24 03:08:50,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4942528735632184 [2023-08-24 03:08:50,090 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 516 transitions. [2023-08-24 03:08:50,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 516 transitions. [2023-08-24 03:08:50,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:08:50,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 516 transitions. [2023-08-24 03:08:50,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:50,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 348.0) internal successors, (1392), 4 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:50,092 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 348.0) internal successors, (1392), 4 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:50,092 INFO L175 Difference]: Start difference. First operand has 98 places, 187 transitions, 2294 flow. Second operand 3 states and 516 transitions. [2023-08-24 03:08:50,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 260 transitions, 3654 flow [2023-08-24 03:08:50,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 260 transitions, 3530 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-24 03:08:50,142 INFO L231 Difference]: Finished difference. Result has 95 places, 187 transitions, 2207 flow [2023-08-24 03:08:50,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=2189, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2207, PETRI_PLACES=95, PETRI_TRANSITIONS=187} [2023-08-24 03:08:50,144 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 63 predicate places. [2023-08-24 03:08:50,144 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 187 transitions, 2207 flow [2023-08-24 03:08:50,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:08:50,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:08:50,144 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:08:50,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-24 03:08:50,145 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 03:08:50,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:08:50,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1026262699, now seen corresponding path program 1 times [2023-08-24 03:08:50,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:08:50,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838301396] [2023-08-24 03:08:50,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:08:50,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:08:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:08:52,367 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:08:52,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:08:52,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838301396] [2023-08-24 03:08:52,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838301396] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:08:52,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549184607] [2023-08-24 03:08:52,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:08:52,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:08:52,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:08:52,373 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:08:52,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-24 03:08:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:08:52,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 45 conjunts are in the unsatisfiable core [2023-08-24 03:08:52,510 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:08:52,790 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 03:08:52,796 INFO L351 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 14 treesize of output 16 [2023-08-24 03:08:52,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 03:08:52,957 INFO L351 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 14 treesize of output 16 [2023-08-24 03:08:53,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 03:08:53,237 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 03:08:53,238 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 52 [2023-08-24 03:08:53,558 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:08:53,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:09:01,023 WARN L234 SmtUtils]: Spent 6.20s on a formula simplification that was a NOOP. DAG size: 55 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:09:01,602 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 03:09:01,602 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 201 treesize of output 179 [2023-08-24 03:09:01,624 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 03:09:01,624 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 143 treesize of output 121 [2023-08-24 03:09:01,648 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 03:09:01,648 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 59 [2023-08-24 03:09:02,023 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 03:09:02,024 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 03:09:02,031 INFO L322 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-08-24 03:09:02,032 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 1 [2023-08-24 03:09:02,035 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 03:09:02,036 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 03:09:02,041 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 03:09:02,041 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 20 treesize of output 3 [2023-08-24 03:09:02,050 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 03:09:02,050 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 03:09:02,055 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 03:09:02,056 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 20 treesize of output 3 [2023-08-24 03:09:02,489 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:09:02,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549184607] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:09:02,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:09:02,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 41 [2023-08-24 03:09:02,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030288575] [2023-08-24 03:09:02,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:09:02,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-08-24 03:09:02,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:09:02,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-08-24 03:09:02,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=1625, Unknown=9, NotChecked=0, Total=1806 [2023-08-24 03:09:02,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 348 [2023-08-24 03:09:02,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 187 transitions, 2207 flow. Second operand has 43 states, 43 states have (on average 86.74418604651163) internal successors, (3730), 43 states have internal predecessors, (3730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:09:02,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:09:02,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 348 [2023-08-24 03:09:02,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:09:37,161 WARN L234 SmtUtils]: Spent 23.33s on a formula simplification. DAG size of input: 127 DAG size of output: 120 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:09:45,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 03:10:06,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 03:10:16,245 WARN L234 SmtUtils]: Spent 8.92s on a formula simplification. DAG size of input: 153 DAG size of output: 112 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:10:28,652 WARN L234 SmtUtils]: Spent 10.60s on a formula simplification. DAG size of input: 122 DAG size of output: 96 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:10:48,522 WARN L234 SmtUtils]: Spent 19.18s on a formula simplification. DAG size of input: 142 DAG size of output: 117 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:10:58,026 WARN L234 SmtUtils]: Spent 8.91s on a formula simplification. DAG size of input: 158 DAG size of output: 118 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:11:07,061 WARN L234 SmtUtils]: Spent 6.58s on a formula simplification. DAG size of input: 127 DAG size of output: 104 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:11:09,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 03:11:10,766 INFO L124 PetriNetUnfolderBase]: 5319/7507 cut-off events. [2023-08-24 03:11:10,766 INFO L125 PetriNetUnfolderBase]: For 40109/40109 co-relation queries the response was YES. [2023-08-24 03:11:10,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40610 conditions, 7507 events. 5319/7507 cut-off events. For 40109/40109 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 36735 event pairs, 257 based on Foata normal form. 6/7513 useless extension candidates. Maximal degree in co-relation 40559. Up to 3073 conditions per place. [2023-08-24 03:11:10,884 INFO L140 encePairwiseOnDemand]: 332/348 looper letters, 680 selfloop transitions, 462 changer transitions 36/1178 dead transitions. [2023-08-24 03:11:10,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 1178 transitions, 13916 flow [2023-08-24 03:11:10,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-08-24 03:11:10,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2023-08-24 03:11:10,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 6237 transitions. [2023-08-24 03:11:10,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2674987133299022 [2023-08-24 03:11:10,896 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 6237 transitions. [2023-08-24 03:11:10,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 6237 transitions. [2023-08-24 03:11:10,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:11:10,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 6237 transitions. [2023-08-24 03:11:10,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 93.08955223880596) internal successors, (6237), 67 states have internal predecessors, (6237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:11:10,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 348.0) internal successors, (23664), 68 states have internal predecessors, (23664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:11:10,943 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 348.0) internal successors, (23664), 68 states have internal predecessors, (23664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:11:10,944 INFO L175 Difference]: Start difference. First operand has 95 places, 187 transitions, 2207 flow. Second operand 67 states and 6237 transitions. [2023-08-24 03:11:10,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 1178 transitions, 13916 flow [2023-08-24 03:11:11,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 1178 transitions, 13910 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 03:11:11,252 INFO L231 Difference]: Finished difference. Result has 187 places, 618 transitions, 8809 flow [2023-08-24 03:11:11,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=348, PETRI_DIFFERENCE_MINUEND_FLOW=2204, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=8809, PETRI_PLACES=187, PETRI_TRANSITIONS=618} [2023-08-24 03:11:11,253 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 155 predicate places. [2023-08-24 03:11:11,253 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 618 transitions, 8809 flow [2023-08-24 03:11:11,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 86.74418604651163) internal successors, (3730), 43 states have internal predecessors, (3730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:11:11,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:11:11,254 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 03:11:11,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-24 03:11:11,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-24 03:11:11,465 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 03:11:11,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:11:11,465 INFO L85 PathProgramCache]: Analyzing trace with hash 6549197, now seen corresponding path program 2 times [2023-08-24 03:11:11,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:11:11,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523888768] [2023-08-24 03:11:11,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:11:11,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:11:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:11:13,083 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:11:13,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:11:13,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523888768] [2023-08-24 03:11:13,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523888768] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:11:13,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152873315] [2023-08-24 03:11:13,084 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 03:11:13,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:11:13,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:11:13,085 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:11:13,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-24 03:11:13,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 03:11:13,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:11:13,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 52 conjunts are in the unsatisfiable core [2023-08-24 03:11:13,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:11:13,446 INFO L351 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 11 treesize of output 7 [2023-08-24 03:11:13,504 INFO L351 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 6 treesize of output 5 [2023-08-24 03:11:13,568 INFO L351 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 6 treesize of output 5 [2023-08-24 03:11:13,639 INFO L351 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 6 treesize of output 5 [2023-08-24 03:11:14,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 03:11:14,201 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 03:11:14,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 03:11:14,202 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 03:11:14,209 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 03:11:14,209 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 72 treesize of output 34 [2023-08-24 03:11:14,343 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:11:14,344 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:11:16,270 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 03:11:16,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152873315] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:11:16,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:11:16,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 36 [2023-08-24 03:11:16,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249133898] [2023-08-24 03:11:16,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:11:16,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-08-24 03:11:16,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:11:16,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-08-24 03:11:16,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1169, Unknown=4, NotChecked=0, Total=1332 [2023-08-24 03:11:16,275 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 348 [2023-08-24 03:11:16,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 618 transitions, 8809 flow. Second operand has 37 states, 37 states have (on average 87.0) internal successors, (3219), 37 states have internal predecessors, (3219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:11:16,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:11:16,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 348 [2023-08-24 03:11:16,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:11:39,730 WARN L234 SmtUtils]: Spent 23.36s on a formula simplification. DAG size of input: 146 DAG size of output: 117 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:12:09,906 WARN L234 SmtUtils]: Spent 29.67s on a formula simplification. DAG size of input: 110 DAG size of output: 85 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:12:41,986 WARN L234 SmtUtils]: Spent 27.39s on a formula simplification. DAG size of input: 114 DAG size of output: 88 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:12:55,019 WARN L234 SmtUtils]: Spent 12.47s on a formula simplification. DAG size of input: 86 DAG size of output: 67 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:13:11,015 WARN L234 SmtUtils]: Spent 14.71s on a formula simplification. DAG size of input: 90 DAG size of output: 70 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:13:52,545 WARN L234 SmtUtils]: Spent 41.43s on a formula simplification. DAG size of input: 111 DAG size of output: 85 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:14:11,992 WARN L234 SmtUtils]: Spent 18.85s on a formula simplification. DAG size of input: 131 DAG size of output: 98 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:14:30,762 WARN L234 SmtUtils]: Spent 14.90s on a formula simplification. DAG size of input: 123 DAG size of output: 109 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:14:59,706 WARN L234 SmtUtils]: Spent 28.67s on a formula simplification. DAG size of input: 87 DAG size of output: 67 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:15:12,951 WARN L234 SmtUtils]: Spent 12.94s on a formula simplification. DAG size of input: 136 DAG size of output: 104 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:15:21,618 WARN L234 SmtUtils]: Spent 8.55s on a formula simplification. DAG size of input: 119 DAG size of output: 89 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:15:37,635 WARN L234 SmtUtils]: Spent 15.03s on a formula simplification. DAG size of input: 128 DAG size of output: 114 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:15:55,191 WARN L234 SmtUtils]: Spent 16.39s on a formula simplification. DAG size of input: 95 DAG size of output: 71 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:16:13,143 WARN L234 SmtUtils]: Spent 16.97s on a formula simplification. DAG size of input: 133 DAG size of output: 100 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:16:48,343 WARN L234 SmtUtils]: Spent 34.91s on a formula simplification. DAG size of input: 123 DAG size of output: 91 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:17:06,743 WARN L234 SmtUtils]: Spent 14.99s on a formula simplification. DAG size of input: 138 DAG size of output: 106 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:17:25,629 WARN L234 SmtUtils]: Spent 18.70s on a formula simplification. DAG size of input: 121 DAG size of output: 91 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:18:09,642 WARN L234 SmtUtils]: Spent 43.77s on a formula simplification. DAG size of input: 132 DAG size of output: 93 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:18:12,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 03:18:25,850 WARN L234 SmtUtils]: Spent 12.55s on a formula simplification. DAG size of input: 123 DAG size of output: 91 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:18:40,880 WARN L234 SmtUtils]: Spent 14.67s on a formula simplification. DAG size of input: 146 DAG size of output: 118 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:19:26,310 WARN L234 SmtUtils]: Spent 39.91s on a formula simplification. DAG size of input: 137 DAG size of output: 98 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:20:07,963 WARN L234 SmtUtils]: Spent 41.34s on a formula simplification. DAG size of input: 120 DAG size of output: 85 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:20:27,599 WARN L234 SmtUtils]: Spent 19.36s on a formula simplification. DAG size of input: 140 DAG size of output: 86 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:20:45,083 WARN L234 SmtUtils]: Spent 16.98s on a formula simplification. DAG size of input: 127 DAG size of output: 105 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:21:17,351 WARN L234 SmtUtils]: Spent 31.76s on a formula simplification. DAG size of input: 133 DAG size of output: 97 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:21:36,740 WARN L234 SmtUtils]: Spent 18.97s on a formula simplification. DAG size of input: 135 DAG size of output: 100 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:21:55,915 WARN L234 SmtUtils]: Spent 19.01s on a formula simplification. DAG size of input: 150 DAG size of output: 110 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:22:11,260 WARN L234 SmtUtils]: Spent 14.98s on a formula simplification. DAG size of input: 151 DAG size of output: 124 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:22:24,383 WARN L234 SmtUtils]: Spent 12.97s on a formula simplification. DAG size of input: 134 DAG size of output: 109 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 03:22:37,390 WARN L234 SmtUtils]: Spent 12.76s on a formula simplification. DAG size of input: 148 DAG size of output: 120 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-08-24 03:22:48,199 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 03:22:48,199 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 03:22:49,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-24 03:22:49,400 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2023-08-24 03:22:49,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 [2023-08-24 03:22:49,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2023-08-24 03:22:49,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-24 03:22:49,441 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Not enough levels on assertion stack at de.uni_freiburg.informatik.ultimate.logic.NoopScript.pop(NoopScript.java:272) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:138) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.pop(UndoableWrapperScript.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.restore(UndoableWrapperScript.java:87) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:264) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:167) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:376) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.NestedWordAutomataUtils.getSuccessorState(NestedWordAutomataUtils.java:482) at de.uni_freiburg.informatik.ultimate.automata.petrinet.operations.DifferencePetriNet$DifferenceSuccessorTransitionProvider.getOrConstructTransition(DifferencePetriNet.java:279) at de.uni_freiburg.informatik.ultimate.automata.petrinet.operations.DifferencePetriNet$DifferenceSuccessorTransitionProvider.getTransitions(DifferencePetriNet.java:261) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.addFullyInstantiatedCandidate(PossibleExtensions.java:168) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.evolveCandidate(PossibleExtensions.java:195) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.evolveCandidate(PossibleExtensions.java:210) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.evolveCandidate(PossibleExtensions.java:210) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.evolveCandidate(PossibleExtensions.java:210) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.evolveCandidate(PossibleExtensions.java:210) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.evolveCandidate(PossibleExtensions.java:210) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.update(PossibleExtensions.java:135) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PetriNetUnfolderBase.computeUnfoldingHelper(PetriNetUnfolderBase.java:226) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PetriNetUnfolderBase.computeUnfolding(PetriNetUnfolderBase.java:183) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PetriNetUnfolderBase.(PetriNetUnfolderBase.java:123) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PetriNetUnfolder.(PetriNetUnfolder.java:72) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.FinitePrefix.(FinitePrefix.java:76) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.FinitePrefix.(FinitePrefix.java:64) at de.uni_freiburg.informatik.ultimate.automata.petrinet.operations.DifferencePairwiseOnDemand.(DifferencePairwiseOnDemand.java:128) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.CegarLoopForPetriNet.enhanceAnddeterminizeInterpolantAutomaton(CegarLoopForPetriNet.java:481) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.CegarLoopForPetriNet.refineAbstraction(CegarLoopForPetriNet.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-08-24 03:22:49,443 INFO L158 Benchmark]: Toolchain (without parser) took 859805.26ms. Allocated memory was 356.5MB in the beginning and 664.8MB in the end (delta: 308.3MB). Free memory was 333.0MB in the beginning and 337.4MB in the end (delta: -4.4MB). Peak memory consumption was 305.6MB. Max. memory is 16.0GB. [2023-08-24 03:22:49,443 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 356.5MB. Free memory is still 333.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 03:22:49,444 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.15ms. Allocated memory is still 356.5MB. Free memory was 333.0MB in the beginning and 321.1MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 03:22:49,444 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.63ms. Allocated memory is still 356.5MB. Free memory was 321.1MB in the beginning and 319.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 03:22:49,444 INFO L158 Benchmark]: Boogie Preprocessor took 24.41ms. Allocated memory is still 356.5MB. Free memory was 319.1MB in the beginning and 317.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 03:22:49,444 INFO L158 Benchmark]: RCFGBuilder took 555.07ms. Allocated memory is still 356.5MB. Free memory was 317.6MB in the beginning and 299.7MB in the end (delta: 17.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 03:22:49,445 INFO L158 Benchmark]: TraceAbstraction took 858884.98ms. Allocated memory was 356.5MB in the beginning and 664.8MB in the end (delta: 308.3MB). Free memory was 299.2MB in the beginning and 337.4MB in the end (delta: -38.2MB). Peak memory consumption was 272.1MB. Max. memory is 16.0GB. [2023-08-24 03:22:49,445 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 356.5MB. Free memory is still 333.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 284.15ms. Allocated memory is still 356.5MB. Free memory was 333.0MB in the beginning and 321.1MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 51.63ms. Allocated memory is still 356.5MB. Free memory was 321.1MB in the beginning and 319.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 24.41ms. Allocated memory is still 356.5MB. Free memory was 319.1MB in the beginning and 317.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 555.07ms. Allocated memory is still 356.5MB. Free memory was 317.6MB in the beginning and 299.7MB in the end (delta: 17.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 858884.98ms. Allocated memory was 356.5MB in the beginning and 664.8MB in the end (delta: 308.3MB). Free memory was 299.2MB in the beginning and 337.4MB in the end (delta: -38.2MB). Peak memory consumption was 272.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.2s, 161 PlacesBefore, 32 PlacesAfterwards, 166 TransitionsBefore, 28 TransitionsAfterwards, 3840 CoEnabledTransitionPairs, 7 FixpointIterations, 73 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 14 TrivialYvCompositions, 23 ConcurrentYvCompositions, 9 ChoiceCompositions, 169 TotalNumberOfCompositions, 4334 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3909, independent: 3866, independent conditional: 0, independent unconditional: 3866, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2253, independent: 2233, independent conditional: 0, independent unconditional: 2233, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3909, independent: 1633, independent conditional: 0, independent unconditional: 1633, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 2253, unknown conditional: 0, unknown unconditional: 2253] , Statistics on independence cache: Total cache size (in pairs): 94, Positive cache size: 88, Positive conditional cache size: 0, Positive unconditional cache size: 88, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: SMTLIBException: Not enough levels on assertion stack de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Not enough levels on assertion stack: de.uni_freiburg.informatik.ultimate.logic.NoopScript.pop(NoopScript.java:272) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown