/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:52:05,842 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:52:05,903 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 11:52:05,930 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:52:05,930 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:52:05,931 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:52:05,931 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:52:05,931 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:52:05,932 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:52:05,935 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:52:05,935 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:52:05,935 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:52:05,935 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:52:05,936 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:52:05,937 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:52:05,937 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:52:05,937 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:52:05,938 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:52:05,938 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:52:05,938 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:52:05,938 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:52:05,939 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:52:05,939 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:52:05,939 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:52:05,939 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:52:05,940 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:52:05,940 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:52:05,940 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:52:05,940 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:52:05,941 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:52:05,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:52:05,941 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:52:05,941 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:52:06,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:52:06,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:52:06,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:52:06,107 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:52:06,108 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:52:06,109 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c [2023-11-17 11:52:07,165 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:52:07,319 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:52:07,320 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c [2023-11-17 11:52:07,328 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a94120d36/0a2d7daa45f64a0e881b4a522200d6fc/FLAG0e9c1b851 [2023-11-17 11:52:07,345 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a94120d36/0a2d7daa45f64a0e881b4a522200d6fc [2023-11-17 11:52:07,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:52:07,348 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:52:07,350 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:52:07,350 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:52:07,353 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:52:07,354 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:52:07" (1/1) ... [2023-11-17 11:52:07,355 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66b96057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:52:07, skipping insertion in model container [2023-11-17 11:52:07,355 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:52:07" (1/1) ... [2023-11-17 11:52:07,380 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:52:07,567 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c[2820,2833] [2023-11-17 11:52:07,587 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:52:07,594 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:52:07,620 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c[2820,2833] [2023-11-17 11:52:07,622 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:52:07,632 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:52:07,633 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:52:07 WrapperNode [2023-11-17 11:52:07,633 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:52:07,634 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:52:07,634 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:52:07,634 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:52:07,638 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:52:07" (1/1) ... [2023-11-17 11:52:07,654 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:52:07" (1/1) ... [2023-11-17 11:52:07,686 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 292 [2023-11-17 11:52:07,686 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:52:07,687 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:52:07,687 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:52:07,687 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:52:07,693 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:52:07" (1/1) ... [2023-11-17 11:52:07,693 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:52:07" (1/1) ... [2023-11-17 11:52:07,696 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:52:07" (1/1) ... [2023-11-17 11:52:07,696 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:52:07" (1/1) ... [2023-11-17 11:52:07,706 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:52:07" (1/1) ... [2023-11-17 11:52:07,709 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:52:07" (1/1) ... [2023-11-17 11:52:07,711 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:52:07" (1/1) ... [2023-11-17 11:52:07,712 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:52:07" (1/1) ... [2023-11-17 11:52:07,721 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:52:07,722 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:52:07,722 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:52:07,722 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:52:07,722 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:52:07" (1/1) ... [2023-11-17 11:52:07,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:52:07,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:52:07,790 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 11:52:07,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 11:52:07,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:52:07,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:52:07,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:52:07,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 11:52:07,848 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 11:52:07,848 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 11:52:07,848 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 11:52:07,848 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 11:52:07,849 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 11:52:07,849 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 11:52:07,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:52:07,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 11:52:07,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:52:07,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:52:07,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:52:07,850 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 11:52:07,949 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:52:07,951 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:52:08,317 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:52:08,595 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:52:08,596 INFO L307 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-17 11:52:08,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:52:08 BoogieIcfgContainer [2023-11-17 11:52:08,600 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:52:08,602 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:52:08,602 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:52:08,604 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:52:08,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:52:07" (1/3) ... [2023-11-17 11:52:08,605 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e3caae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:52:08, skipping insertion in model container [2023-11-17 11:52:08,605 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:52:07" (2/3) ... [2023-11-17 11:52:08,605 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e3caae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:52:08, skipping insertion in model container [2023-11-17 11:52:08,606 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:52:08" (3/3) ... [2023-11-17 11:52:08,606 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-subst.wvr.c [2023-11-17 11:52:08,619 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:52:08,619 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 11:52:08,620 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:52:08,663 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 11:52:08,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 42 transitions, 105 flow [2023-11-17 11:52:08,729 INFO L124 PetriNetUnfolderBase]: 9/39 cut-off events. [2023-11-17 11:52:08,730 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 11:52:08,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 39 events. 9/39 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2023-11-17 11:52:08,735 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 42 transitions, 105 flow [2023-11-17 11:52:08,739 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 38 transitions, 94 flow [2023-11-17 11:52:08,742 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:52:08,751 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 39 places, 38 transitions, 94 flow [2023-11-17 11:52:08,754 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 39 places, 38 transitions, 94 flow [2023-11-17 11:52:08,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 38 transitions, 94 flow [2023-11-17 11:52:08,774 INFO L124 PetriNetUnfolderBase]: 9/38 cut-off events. [2023-11-17 11:52:08,774 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 11:52:08,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 38 events. 9/38 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2023-11-17 11:52:08,775 INFO L119 LiptonReduction]: Number of co-enabled transitions 396 [2023-11-17 11:52:09,467 INFO L134 LiptonReduction]: Checked pairs total: 617 [2023-11-17 11:52:09,467 INFO L136 LiptonReduction]: Total number of compositions: 12 [2023-11-17 11:52:09,484 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:52:09,490 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@529dd197, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:52:09,490 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 11:52:09,505 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:52:09,505 INFO L124 PetriNetUnfolderBase]: 8/31 cut-off events. [2023-11-17 11:52:09,506 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 11:52:09,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:09,506 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] [2023-11-17 11:52:09,507 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)] === [2023-11-17 11:52:09,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:09,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1613976033, now seen corresponding path program 1 times [2023-11-17 11:52:09,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:09,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214686978] [2023-11-17 11:52:09,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:09,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:10,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:52:10,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:10,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214686978] [2023-11-17 11:52:10,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214686978] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:52:10,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:52:10,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:52:10,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317190025] [2023-11-17 11:52:10,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:52:10,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 11:52:10,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:10,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 11:52:10,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-17 11:52:10,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 54 [2023-11-17 11:52:10,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 82 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:10,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:10,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 54 [2023-11-17 11:52:10,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:10,850 INFO L124 PetriNetUnfolderBase]: 893/1282 cut-off events. [2023-11-17 11:52:10,850 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2023-11-17 11:52:10,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2700 conditions, 1282 events. 893/1282 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4550 event pairs, 152 based on Foata normal form. 1/931 useless extension candidates. Maximal degree in co-relation 1164. Up to 555 conditions per place. [2023-11-17 11:52:10,862 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 94 selfloop transitions, 13 changer transitions 7/114 dead transitions. [2023-11-17 11:52:10,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 114 transitions, 522 flow [2023-11-17 11:52:10,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 11:52:10,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 11:52:10,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 157 transitions. [2023-11-17 11:52:10,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29074074074074074 [2023-11-17 11:52:10,873 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 157 transitions. [2023-11-17 11:52:10,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 157 transitions. [2023-11-17 11:52:10,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:10,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 157 transitions. [2023-11-17 11:52:10,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 15.7) internal successors, (157), 10 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:10,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 54.0) internal successors, (594), 11 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:10,906 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 54.0) internal successors, (594), 11 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:10,908 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 82 flow. Second operand 10 states and 157 transitions. [2023-11-17 11:52:10,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 114 transitions, 522 flow [2023-11-17 11:52:10,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 114 transitions, 478 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 11:52:10,921 INFO L231 Difference]: Finished difference. Result has 43 places, 44 transitions, 162 flow [2023-11-17 11:52:10,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=162, PETRI_PLACES=43, PETRI_TRANSITIONS=44} [2023-11-17 11:52:10,925 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2023-11-17 11:52:10,925 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 44 transitions, 162 flow [2023-11-17 11:52:10,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:10,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:10,926 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] [2023-11-17 11:52:10,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:52:10,926 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)] === [2023-11-17 11:52:10,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:10,927 INFO L85 PathProgramCache]: Analyzing trace with hash 798876475, now seen corresponding path program 1 times [2023-11-17 11:52:10,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:10,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848087703] [2023-11-17 11:52:10,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:10,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:10,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:11,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:52:11,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:11,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848087703] [2023-11-17 11:52:11,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848087703] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:11,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655921377] [2023-11-17 11:52:11,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:11,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:11,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:52:11,077 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:52:11,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 11:52:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:11,186 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 11:52:11,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:52:11,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:52:11,267 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:52:11,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:52:11,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655921377] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:11,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 11:52:11,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2023-11-17 11:52:11,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621623727] [2023-11-17 11:52:11,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:52:11,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:52:11,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:11,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:52:11,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-11-17 11:52:11,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 54 [2023-11-17 11:52:11,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 44 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:11,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:11,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 54 [2023-11-17 11:52:11,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:11,729 INFO L124 PetriNetUnfolderBase]: 1885/2681 cut-off events. [2023-11-17 11:52:11,729 INFO L125 PetriNetUnfolderBase]: For 858/858 co-relation queries the response was YES. [2023-11-17 11:52:11,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6427 conditions, 2681 events. 1885/2681 cut-off events. For 858/858 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10799 event pairs, 878 based on Foata normal form. 1/2055 useless extension candidates. Maximal degree in co-relation 5625. Up to 1279 conditions per place. [2023-11-17 11:52:11,740 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 112 selfloop transitions, 8 changer transitions 6/126 dead transitions. [2023-11-17 11:52:11,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 126 transitions, 663 flow [2023-11-17 11:52:11,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:52:11,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:52:11,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 139 transitions. [2023-11-17 11:52:11,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36772486772486773 [2023-11-17 11:52:11,744 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 139 transitions. [2023-11-17 11:52:11,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 139 transitions. [2023-11-17 11:52:11,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:11,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 139 transitions. [2023-11-17 11:52:11,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 19.857142857142858) internal successors, (139), 7 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:11,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:11,749 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:11,750 INFO L175 Difference]: Start difference. First operand has 43 places, 44 transitions, 162 flow. Second operand 7 states and 139 transitions. [2023-11-17 11:52:11,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 126 transitions, 663 flow [2023-11-17 11:52:11,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 126 transitions, 657 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-17 11:52:11,771 INFO L231 Difference]: Finished difference. Result has 52 places, 48 transitions, 202 flow [2023-11-17 11:52:11,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=202, PETRI_PLACES=52, PETRI_TRANSITIONS=48} [2023-11-17 11:52:11,772 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 18 predicate places. [2023-11-17 11:52:11,772 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 48 transitions, 202 flow [2023-11-17 11:52:11,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:11,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:11,773 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] [2023-11-17 11:52:11,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-17 11:52:11,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:11,983 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)] === [2023-11-17 11:52:11,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:11,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1211370981, now seen corresponding path program 1 times [2023-11-17 11:52:11,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:11,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482003967] [2023-11-17 11:52:11,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:11,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:12,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:12,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:52:12,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:12,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482003967] [2023-11-17 11:52:12,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482003967] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:12,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139547208] [2023-11-17 11:52:12,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:12,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:12,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:52:12,114 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:52:12,143 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 11:52:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:12,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 11:52:12,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:52:12,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:52:12,273 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:52:12,340 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:52:12,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1139547208] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:12,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 11:52:12,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 11 [2023-11-17 11:52:12,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158502423] [2023-11-17 11:52:12,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:52:12,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:52:12,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:12,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:52:12,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-17 11:52:12,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 54 [2023-11-17 11:52:12,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 202 flow. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:12,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:12,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 54 [2023-11-17 11:52:12,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:12,706 INFO L124 PetriNetUnfolderBase]: 2436/3467 cut-off events. [2023-11-17 11:52:12,707 INFO L125 PetriNetUnfolderBase]: For 1487/1487 co-relation queries the response was YES. [2023-11-17 11:52:12,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8792 conditions, 3467 events. 2436/3467 cut-off events. For 1487/1487 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 14525 event pairs, 1215 based on Foata normal form. 1/2670 useless extension candidates. Maximal degree in co-relation 7737. Up to 2013 conditions per place. [2023-11-17 11:52:12,720 INFO L140 encePairwiseOnDemand]: 45/54 looper letters, 106 selfloop transitions, 8 changer transitions 7/121 dead transitions. [2023-11-17 11:52:12,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 121 transitions, 669 flow [2023-11-17 11:52:12,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:52:12,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:52:12,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 134 transitions. [2023-11-17 11:52:12,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41358024691358025 [2023-11-17 11:52:12,721 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 134 transitions. [2023-11-17 11:52:12,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 134 transitions. [2023-11-17 11:52:12,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:12,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 134 transitions. [2023-11-17 11:52:12,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 22.333333333333332) internal successors, (134), 6 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:12,722 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:12,722 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:12,722 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 202 flow. Second operand 6 states and 134 transitions. [2023-11-17 11:52:12,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 121 transitions, 669 flow [2023-11-17 11:52:12,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 121 transitions, 658 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-17 11:52:12,733 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 226 flow [2023-11-17 11:52:12,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=226, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2023-11-17 11:52:12,734 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 23 predicate places. [2023-11-17 11:52:12,734 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 226 flow [2023-11-17 11:52:12,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:12,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:12,734 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] [2023-11-17 11:52:12,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 11:52:12,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-17 11:52:12,940 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)] === [2023-11-17 11:52:12,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:12,940 INFO L85 PathProgramCache]: Analyzing trace with hash -689431924, now seen corresponding path program 1 times [2023-11-17 11:52:12,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:12,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463579790] [2023-11-17 11:52:12,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:12,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:13,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:52:13,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:13,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463579790] [2023-11-17 11:52:13,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463579790] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:52:13,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:52:13,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:52:13,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725102689] [2023-11-17 11:52:13,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:52:13,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:52:13,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:13,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:52:13,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:52:13,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 54 [2023-11-17 11:52:13,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 226 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:13,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:13,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 54 [2023-11-17 11:52:13,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:13,330 INFO L124 PetriNetUnfolderBase]: 1828/2686 cut-off events. [2023-11-17 11:52:13,330 INFO L125 PetriNetUnfolderBase]: For 1847/1847 co-relation queries the response was YES. [2023-11-17 11:52:13,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7190 conditions, 2686 events. 1828/2686 cut-off events. For 1847/1847 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11552 event pairs, 690 based on Foata normal form. 0/2207 useless extension candidates. Maximal degree in co-relation 6455. Up to 1403 conditions per place. [2023-11-17 11:52:13,341 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 79 selfloop transitions, 10 changer transitions 3/92 dead transitions. [2023-11-17 11:52:13,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 92 transitions, 564 flow [2023-11-17 11:52:13,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:52:13,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:52:13,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 103 transitions. [2023-11-17 11:52:13,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31790123456790126 [2023-11-17 11:52:13,342 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 103 transitions. [2023-11-17 11:52:13,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 103 transitions. [2023-11-17 11:52:13,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:13,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 103 transitions. [2023-11-17 11:52:13,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 17.166666666666668) internal successors, (103), 6 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:13,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:13,344 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:13,344 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 226 flow. Second operand 6 states and 103 transitions. [2023-11-17 11:52:13,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 92 transitions, 564 flow [2023-11-17 11:52:13,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 92 transitions, 539 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-11-17 11:52:13,351 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 256 flow [2023-11-17 11:52:13,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2023-11-17 11:52:13,352 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 25 predicate places. [2023-11-17 11:52:13,352 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 256 flow [2023-11-17 11:52:13,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:13,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:13,355 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] [2023-11-17 11:52:13,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 11:52:13,356 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)] === [2023-11-17 11:52:13,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:13,356 INFO L85 PathProgramCache]: Analyzing trace with hash -822506327, now seen corresponding path program 1 times [2023-11-17 11:52:13,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:13,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474465937] [2023-11-17 11:52:13,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:13,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:13,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:52:13,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:13,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474465937] [2023-11-17 11:52:13,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474465937] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:13,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102876334] [2023-11-17 11:52:13,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:13,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:13,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:52:13,848 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:52:13,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 11:52:13,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:13,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-17 11:52:13,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:52:14,126 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:52:14,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:52:14,306 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:52:14,307 INFO L378 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 145 treesize of output 125 [2023-11-17 11:52:14,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:52:14,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102876334] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:14,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 11:52:14,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 18 [2023-11-17 11:52:14,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829932969] [2023-11-17 11:52:14,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:52:14,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 11:52:14,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:14,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 11:52:14,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2023-11-17 11:52:14,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 54 [2023-11-17 11:52:14,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 256 flow. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:14,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:14,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 54 [2023-11-17 11:52:14,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:14,976 INFO L124 PetriNetUnfolderBase]: 1627/2400 cut-off events. [2023-11-17 11:52:14,976 INFO L125 PetriNetUnfolderBase]: For 1720/1720 co-relation queries the response was YES. [2023-11-17 11:52:14,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6662 conditions, 2400 events. 1627/2400 cut-off events. For 1720/1720 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 10316 event pairs, 214 based on Foata normal form. 55/2104 useless extension candidates. Maximal degree in co-relation 6181. Up to 1728 conditions per place. [2023-11-17 11:52:14,986 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 97 selfloop transitions, 11 changer transitions 15/123 dead transitions. [2023-11-17 11:52:14,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 123 transitions, 751 flow [2023-11-17 11:52:14,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 11:52:14,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 11:52:14,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 151 transitions. [2023-11-17 11:52:14,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2796296296296296 [2023-11-17 11:52:14,987 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 151 transitions. [2023-11-17 11:52:14,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 151 transitions. [2023-11-17 11:52:14,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:14,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 151 transitions. [2023-11-17 11:52:14,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:14,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 54.0) internal successors, (594), 11 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:14,989 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 54.0) internal successors, (594), 11 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:14,989 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 256 flow. Second operand 10 states and 151 transitions. [2023-11-17 11:52:14,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 123 transitions, 751 flow [2023-11-17 11:52:14,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 123 transitions, 732 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-17 11:52:14,996 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 291 flow [2023-11-17 11:52:14,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=291, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2023-11-17 11:52:14,998 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 32 predicate places. [2023-11-17 11:52:14,998 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 291 flow [2023-11-17 11:52:14,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 9 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:14,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:14,998 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] [2023-11-17 11:52:15,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 11:52:15,203 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 [2023-11-17 11:52:15,203 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)] === [2023-11-17 11:52:15,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:15,204 INFO L85 PathProgramCache]: Analyzing trace with hash 687109225, now seen corresponding path program 2 times [2023-11-17 11:52:15,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:15,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557341019] [2023-11-17 11:52:15,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:15,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:15,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:52:15,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:15,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557341019] [2023-11-17 11:52:15,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557341019] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:15,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629338893] [2023-11-17 11:52:15,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 11:52:15,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:15,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:52:15,471 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:52:15,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 11:52:15,571 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-17 11:52:15,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:52:15,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-17 11:52:15,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:52:15,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:52:15,718 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 11:52:15,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629338893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:52:15,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 11:52:15,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 13 [2023-11-17 11:52:15,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501058773] [2023-11-17 11:52:15,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:52:15,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:52:15,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:15,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:52:15,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2023-11-17 11:52:15,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 54 [2023-11-17 11:52:15,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 291 flow. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:15,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:15,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 54 [2023-11-17 11:52:15,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:16,031 INFO L124 PetriNetUnfolderBase]: 1509/2216 cut-off events. [2023-11-17 11:52:16,031 INFO L125 PetriNetUnfolderBase]: For 2456/2456 co-relation queries the response was YES. [2023-11-17 11:52:16,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6613 conditions, 2216 events. 1509/2216 cut-off events. For 2456/2456 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 9271 event pairs, 214 based on Foata normal form. 1/1890 useless extension candidates. Maximal degree in co-relation 5987. Up to 1728 conditions per place. [2023-11-17 11:52:16,041 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 55 selfloop transitions, 7 changer transitions 45/107 dead transitions. [2023-11-17 11:52:16,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 107 transitions, 679 flow [2023-11-17 11:52:16,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 11:52:16,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 11:52:16,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 124 transitions. [2023-11-17 11:52:16,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28703703703703703 [2023-11-17 11:52:16,042 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 124 transitions. [2023-11-17 11:52:16,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 124 transitions. [2023-11-17 11:52:16,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:16,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 124 transitions. [2023-11-17 11:52:16,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 15.5) internal successors, (124), 8 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:16,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 54.0) internal successors, (486), 9 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:16,043 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 54.0) internal successors, (486), 9 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:16,043 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 291 flow. Second operand 8 states and 124 transitions. [2023-11-17 11:52:16,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 107 transitions, 679 flow [2023-11-17 11:52:16,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 107 transitions, 654 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-17 11:52:16,051 INFO L231 Difference]: Finished difference. Result has 67 places, 48 transitions, 251 flow [2023-11-17 11:52:16,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=251, PETRI_PLACES=67, PETRI_TRANSITIONS=48} [2023-11-17 11:52:16,051 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 33 predicate places. [2023-11-17 11:52:16,051 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 48 transitions, 251 flow [2023-11-17 11:52:16,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:16,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:16,051 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, 1] [2023-11-17 11:52:16,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 11:52:16,257 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 [2023-11-17 11:52:16,257 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)] === [2023-11-17 11:52:16,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:16,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1690899812, now seen corresponding path program 1 times [2023-11-17 11:52:16,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:16,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313340311] [2023-11-17 11:52:16,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:16,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:16,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:52:16,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:16,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313340311] [2023-11-17 11:52:16,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313340311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:52:16,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:52:16,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:52:16,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444076276] [2023-11-17 11:52:16,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:52:16,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:52:16,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:16,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:52:16,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:52:16,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 54 [2023-11-17 11:52:16,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 48 transitions, 251 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:16,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:16,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 54 [2023-11-17 11:52:16,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:16,542 INFO L124 PetriNetUnfolderBase]: 1161/1678 cut-off events. [2023-11-17 11:52:16,542 INFO L125 PetriNetUnfolderBase]: For 1682/1682 co-relation queries the response was YES. [2023-11-17 11:52:16,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4892 conditions, 1678 events. 1161/1678 cut-off events. For 1682/1682 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6161 event pairs, 574 based on Foata normal form. 0/1448 useless extension candidates. Maximal degree in co-relation 4863. Up to 1403 conditions per place. [2023-11-17 11:52:16,547 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 37 selfloop transitions, 2 changer transitions 40/79 dead transitions. [2023-11-17 11:52:16,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 79 transitions, 522 flow [2023-11-17 11:52:16,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:52:16,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:52:16,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2023-11-17 11:52:16,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2932098765432099 [2023-11-17 11:52:16,548 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 95 transitions. [2023-11-17 11:52:16,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 95 transitions. [2023-11-17 11:52:16,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:16,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 95 transitions. [2023-11-17 11:52:16,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:16,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:16,553 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:16,553 INFO L175 Difference]: Start difference. First operand has 67 places, 48 transitions, 251 flow. Second operand 6 states and 95 transitions. [2023-11-17 11:52:16,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 79 transitions, 522 flow [2023-11-17 11:52:16,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 79 transitions, 488 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-11-17 11:52:16,557 INFO L231 Difference]: Finished difference. Result has 59 places, 39 transitions, 164 flow [2023-11-17 11:52:16,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=164, PETRI_PLACES=59, PETRI_TRANSITIONS=39} [2023-11-17 11:52:16,557 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 25 predicate places. [2023-11-17 11:52:16,557 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 39 transitions, 164 flow [2023-11-17 11:52:16,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:16,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:16,559 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, 1] [2023-11-17 11:52:16,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 11:52:16,559 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)] === [2023-11-17 11:52:16,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:16,559 INFO L85 PathProgramCache]: Analyzing trace with hash -88067014, now seen corresponding path program 1 times [2023-11-17 11:52:16,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:16,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537340240] [2023-11-17 11:52:16,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:16,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:16,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:52:16,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:16,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537340240] [2023-11-17 11:52:16,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537340240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:52:16,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:52:16,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 11:52:16,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123873743] [2023-11-17 11:52:16,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:52:16,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:52:16,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:16,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:52:16,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:52:16,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 54 [2023-11-17 11:52:16,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 39 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:16,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:16,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 54 [2023-11-17 11:52:16,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:16,776 INFO L124 PetriNetUnfolderBase]: 728/1037 cut-off events. [2023-11-17 11:52:16,776 INFO L125 PetriNetUnfolderBase]: For 670/670 co-relation queries the response was YES. [2023-11-17 11:52:16,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2930 conditions, 1037 events. 728/1037 cut-off events. For 670/670 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3401 event pairs, 258 based on Foata normal form. 34/967 useless extension candidates. Maximal degree in co-relation 2909. Up to 616 conditions per place. [2023-11-17 11:52:16,784 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 34 selfloop transitions, 2 changer transitions 41/77 dead transitions. [2023-11-17 11:52:16,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 77 transitions, 446 flow [2023-11-17 11:52:16,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:52:16,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:52:16,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2023-11-17 11:52:16,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34074074074074073 [2023-11-17 11:52:16,785 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 92 transitions. [2023-11-17 11:52:16,785 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 92 transitions. [2023-11-17 11:52:16,785 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:16,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 92 transitions. [2023-11-17 11:52:16,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:16,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:16,786 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:16,786 INFO L175 Difference]: Start difference. First operand has 59 places, 39 transitions, 164 flow. Second operand 5 states and 92 transitions. [2023-11-17 11:52:16,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 77 transitions, 446 flow [2023-11-17 11:52:16,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 77 transitions, 388 flow, removed 27 selfloop flow, removed 10 redundant places. [2023-11-17 11:52:16,788 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 120 flow [2023-11-17 11:52:16,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=120, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2023-11-17 11:52:16,789 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 11 predicate places. [2023-11-17 11:52:16,789 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 120 flow [2023-11-17 11:52:16,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:16,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:16,790 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, 1] [2023-11-17 11:52:16,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 11:52:16,790 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)] === [2023-11-17 11:52:16,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:16,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1475276371, now seen corresponding path program 1 times [2023-11-17 11:52:16,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:16,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264276970] [2023-11-17 11:52:16,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:16,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:16,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:52:16,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:16,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264276970] [2023-11-17 11:52:16,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264276970] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:16,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137511788] [2023-11-17 11:52:16,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:16,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:16,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:52:16,889 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:52:16,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 11:52:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:16,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 11:52:16,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:52:17,043 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:52:17,043 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:52:17,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:52:17,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137511788] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:17,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 11:52:17,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4, 6] total 12 [2023-11-17 11:52:17,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445483999] [2023-11-17 11:52:17,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:52:17,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:52:17,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:17,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:52:17,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-11-17 11:52:17,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 54 [2023-11-17 11:52:17,098 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 120 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:17,098 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:17,098 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 54 [2023-11-17 11:52:17,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:17,223 INFO L124 PetriNetUnfolderBase]: 674/948 cut-off events. [2023-11-17 11:52:17,224 INFO L125 PetriNetUnfolderBase]: For 238/238 co-relation queries the response was YES. [2023-11-17 11:52:17,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2352 conditions, 948 events. 674/948 cut-off events. For 238/238 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 3027 event pairs, 175 based on Foata normal form. 34/724 useless extension candidates. Maximal degree in co-relation 2336. Up to 486 conditions per place. [2023-11-17 11:52:17,227 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 52 selfloop transitions, 7 changer transitions 0/59 dead transitions. [2023-11-17 11:52:17,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 59 transitions, 307 flow [2023-11-17 11:52:17,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:52:17,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:52:17,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2023-11-17 11:52:17,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2222222222222222 [2023-11-17 11:52:17,228 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 84 transitions. [2023-11-17 11:52:17,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 84 transitions. [2023-11-17 11:52:17,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:17,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 84 transitions. [2023-11-17 11:52:17,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:17,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:17,229 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:17,229 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 120 flow. Second operand 7 states and 84 transitions. [2023-11-17 11:52:17,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 59 transitions, 307 flow [2023-11-17 11:52:17,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 59 transitions, 289 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-11-17 11:52:17,231 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 139 flow [2023-11-17 11:52:17,231 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=139, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2023-11-17 11:52:17,231 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 10 predicate places. [2023-11-17 11:52:17,232 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 139 flow [2023-11-17 11:52:17,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:17,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:17,232 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, 1, 1] [2023-11-17 11:52:17,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-17 11:52:17,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:17,437 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)] === [2023-11-17 11:52:17,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:17,438 INFO L85 PathProgramCache]: Analyzing trace with hash 972499208, now seen corresponding path program 1 times [2023-11-17 11:52:17,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:17,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939906717] [2023-11-17 11:52:17,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:17,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:17,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 11:52:17,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:17,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939906717] [2023-11-17 11:52:17,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939906717] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:17,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991651677] [2023-11-17 11:52:17,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:17,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:17,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:52:17,716 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:52:17,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-17 11:52:17,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:17,842 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-17 11:52:17,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:52:18,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:52:18,050 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:52:18,178 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:52:18,179 INFO L378 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 145 treesize of output 125 [2023-11-17 11:52:18,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:52:18,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991651677] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:52:18,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:52:18,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 26 [2023-11-17 11:52:18,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085145414] [2023-11-17 11:52:18,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:52:18,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-17 11:52:18,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:18,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-17 11:52:18,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2023-11-17 11:52:18,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 54 [2023-11-17 11:52:18,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 139 flow. Second operand has 28 states, 28 states have (on average 6.678571428571429) internal successors, (187), 28 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:18,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:18,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 54 [2023-11-17 11:52:18,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:19,934 INFO L124 PetriNetUnfolderBase]: 3501/5017 cut-off events. [2023-11-17 11:52:19,934 INFO L125 PetriNetUnfolderBase]: For 2408/2408 co-relation queries the response was YES. [2023-11-17 11:52:19,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12920 conditions, 5017 events. 3501/5017 cut-off events. For 2408/2408 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 23690 event pairs, 220 based on Foata normal form. 5/3868 useless extension candidates. Maximal degree in co-relation 6720. Up to 862 conditions per place. [2023-11-17 11:52:19,954 INFO L140 encePairwiseOnDemand]: 40/54 looper letters, 290 selfloop transitions, 63 changer transitions 20/373 dead transitions. [2023-11-17 11:52:19,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 373 transitions, 1933 flow [2023-11-17 11:52:19,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-17 11:52:19,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-17 11:52:19,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 481 transitions. [2023-11-17 11:52:19,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2873357228195938 [2023-11-17 11:52:19,957 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 481 transitions. [2023-11-17 11:52:19,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 481 transitions. [2023-11-17 11:52:19,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:19,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 481 transitions. [2023-11-17 11:52:19,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 15.516129032258064) internal successors, (481), 31 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:19,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 54.0) internal successors, (1728), 32 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:19,962 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 54.0) internal successors, (1728), 32 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:19,962 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 139 flow. Second operand 31 states and 481 transitions. [2023-11-17 11:52:19,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 373 transitions, 1933 flow [2023-11-17 11:52:19,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 373 transitions, 1921 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 11:52:19,971 INFO L231 Difference]: Finished difference. Result has 84 places, 102 transitions, 648 flow [2023-11-17 11:52:19,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=648, PETRI_PLACES=84, PETRI_TRANSITIONS=102} [2023-11-17 11:52:19,972 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 50 predicate places. [2023-11-17 11:52:19,972 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 102 transitions, 648 flow [2023-11-17 11:52:19,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 6.678571428571429) internal successors, (187), 28 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:19,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:19,972 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, 1, 1] [2023-11-17 11:52:19,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-17 11:52:20,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:20,178 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)] === [2023-11-17 11:52:20,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:20,179 INFO L85 PathProgramCache]: Analyzing trace with hash 519328528, now seen corresponding path program 2 times [2023-11-17 11:52:20,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:20,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115289029] [2023-11-17 11:52:20,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:20,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:20,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:20,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 11:52:20,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:20,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115289029] [2023-11-17 11:52:20,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115289029] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:20,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982483319] [2023-11-17 11:52:20,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 11:52:20,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:20,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:52:20,466 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:52:20,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-17 11:52:20,584 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-17 11:52:20,584 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:52:20,585 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-17 11:52:20,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:52:20,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 11:52:20,728 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 11:52:20,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982483319] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:52:20,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 11:52:20,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 16 [2023-11-17 11:52:20,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086512776] [2023-11-17 11:52:20,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:52:20,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 11:52:20,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:20,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 11:52:20,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2023-11-17 11:52:20,730 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 54 [2023-11-17 11:52:20,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 102 transitions, 648 flow. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:20,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:20,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 54 [2023-11-17 11:52:20,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:21,346 INFO L124 PetriNetUnfolderBase]: 4129/5932 cut-off events. [2023-11-17 11:52:21,347 INFO L125 PetriNetUnfolderBase]: For 13115/13115 co-relation queries the response was YES. [2023-11-17 11:52:21,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19340 conditions, 5932 events. 4129/5932 cut-off events. For 13115/13115 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 28964 event pairs, 696 based on Foata normal form. 110/5030 useless extension candidates. Maximal degree in co-relation 16865. Up to 1866 conditions per place. [2023-11-17 11:52:21,375 INFO L140 encePairwiseOnDemand]: 42/54 looper letters, 146 selfloop transitions, 50 changer transitions 4/200 dead transitions. [2023-11-17 11:52:21,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 200 transitions, 1470 flow [2023-11-17 11:52:21,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 11:52:21,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 11:52:21,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 173 transitions. [2023-11-17 11:52:21,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29124579124579125 [2023-11-17 11:52:21,377 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 173 transitions. [2023-11-17 11:52:21,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 173 transitions. [2023-11-17 11:52:21,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:21,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 173 transitions. [2023-11-17 11:52:21,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 15.727272727272727) internal successors, (173), 11 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:21,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 54.0) internal successors, (648), 12 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:21,379 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 54.0) internal successors, (648), 12 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:21,379 INFO L175 Difference]: Start difference. First operand has 84 places, 102 transitions, 648 flow. Second operand 11 states and 173 transitions. [2023-11-17 11:52:21,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 200 transitions, 1470 flow [2023-11-17 11:52:21,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 200 transitions, 1360 flow, removed 29 selfloop flow, removed 6 redundant places. [2023-11-17 11:52:21,416 INFO L231 Difference]: Finished difference. Result has 93 places, 120 transitions, 860 flow [2023-11-17 11:52:21,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=860, PETRI_PLACES=93, PETRI_TRANSITIONS=120} [2023-11-17 11:52:21,417 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 59 predicate places. [2023-11-17 11:52:21,417 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 120 transitions, 860 flow [2023-11-17 11:52:21,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:21,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:21,417 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, 1, 1] [2023-11-17 11:52:21,423 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-17 11:52:21,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:21,623 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)] === [2023-11-17 11:52:21,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:21,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1461290420, now seen corresponding path program 1 times [2023-11-17 11:52:21,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:21,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938968498] [2023-11-17 11:52:21,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:21,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:21,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:21,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:52:21,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:21,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938968498] [2023-11-17 11:52:21,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938968498] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:21,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433311622] [2023-11-17 11:52:21,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:21,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:21,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:52:21,933 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:52:21,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-17 11:52:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:22,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 11:52:22,044 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:52:22,067 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2023-11-17 11:52:22,067 INFO L378 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 42 treesize of output 19 [2023-11-17 11:52:22,081 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 11:52:22,082 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 11:52:22,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433311622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:52:22,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 11:52:22,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 12 [2023-11-17 11:52:22,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802587565] [2023-11-17 11:52:22,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:52:22,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:52:22,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:22,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:52:22,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-11-17 11:52:22,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 54 [2023-11-17 11:52:22,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 120 transitions, 860 flow. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:22,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:22,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 54 [2023-11-17 11:52:22,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:22,741 INFO L124 PetriNetUnfolderBase]: 5085/7416 cut-off events. [2023-11-17 11:52:22,741 INFO L125 PetriNetUnfolderBase]: For 23125/23125 co-relation queries the response was YES. [2023-11-17 11:52:22,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25639 conditions, 7416 events. 5085/7416 cut-off events. For 23125/23125 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 38880 event pairs, 2062 based on Foata normal form. 6/6188 useless extension candidates. Maximal degree in co-relation 22411. Up to 5243 conditions per place. [2023-11-17 11:52:22,770 INFO L140 encePairwiseOnDemand]: 49/54 looper letters, 128 selfloop transitions, 4 changer transitions 77/209 dead transitions. [2023-11-17 11:52:22,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 209 transitions, 1828 flow [2023-11-17 11:52:22,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:52:22,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:52:22,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 81 transitions. [2023-11-17 11:52:22,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2023-11-17 11:52:22,772 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 81 transitions. [2023-11-17 11:52:22,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 81 transitions. [2023-11-17 11:52:22,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:22,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 81 transitions. [2023-11-17 11:52:22,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:22,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:22,772 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 54.0) internal successors, (270), 5 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:22,772 INFO L175 Difference]: Start difference. First operand has 93 places, 120 transitions, 860 flow. Second operand 4 states and 81 transitions. [2023-11-17 11:52:22,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 209 transitions, 1828 flow [2023-11-17 11:52:22,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 209 transitions, 1782 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 11:52:22,859 INFO L231 Difference]: Finished difference. Result has 94 places, 120 transitions, 872 flow [2023-11-17 11:52:22,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=872, PETRI_PLACES=94, PETRI_TRANSITIONS=120} [2023-11-17 11:52:22,860 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 60 predicate places. [2023-11-17 11:52:22,860 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 120 transitions, 872 flow [2023-11-17 11:52:22,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:22,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:22,860 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, 1, 1] [2023-11-17 11:52:22,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-17 11:52:23,066 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,SelfDestructingSolverStorable11 [2023-11-17 11:52:23,066 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)] === [2023-11-17 11:52:23,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:23,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1036116660, now seen corresponding path program 2 times [2023-11-17 11:52:23,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:23,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945019695] [2023-11-17 11:52:23,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:23,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:23,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:52:23,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:23,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945019695] [2023-11-17 11:52:23,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945019695] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:23,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [968142755] [2023-11-17 11:52:23,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 11:52:23,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:23,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:52:23,388 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:52:23,413 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-17 11:52:23,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-17 11:52:23,492 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:52:23,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-17 11:52:23,494 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:52:23,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 11:52:23,618 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 11:52:23,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [968142755] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:52:23,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 11:52:23,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 16 [2023-11-17 11:52:23,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497677907] [2023-11-17 11:52:23,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:52:23,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 11:52:23,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:23,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 11:52:23,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2023-11-17 11:52:23,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 54 [2023-11-17 11:52:23,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 120 transitions, 872 flow. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:23,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:23,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 54 [2023-11-17 11:52:23,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:24,397 INFO L124 PetriNetUnfolderBase]: 4763/7020 cut-off events. [2023-11-17 11:52:24,398 INFO L125 PetriNetUnfolderBase]: For 21718/21718 co-relation queries the response was YES. [2023-11-17 11:52:24,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23928 conditions, 7020 events. 4763/7020 cut-off events. For 21718/21718 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 37816 event pairs, 830 based on Foata normal form. 50/5788 useless extension candidates. Maximal degree in co-relation 23733. Up to 2694 conditions per place. [2023-11-17 11:52:24,425 INFO L140 encePairwiseOnDemand]: 43/54 looper letters, 184 selfloop transitions, 34 changer transitions 7/225 dead transitions. [2023-11-17 11:52:24,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 225 transitions, 1889 flow [2023-11-17 11:52:24,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 11:52:24,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 11:52:24,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 154 transitions. [2023-11-17 11:52:24,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35648148148148145 [2023-11-17 11:52:24,426 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 154 transitions. [2023-11-17 11:52:24,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 154 transitions. [2023-11-17 11:52:24,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:24,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 154 transitions. [2023-11-17 11:52:24,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 19.25) internal successors, (154), 8 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:24,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 54.0) internal successors, (486), 9 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:24,427 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 54.0) internal successors, (486), 9 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:24,427 INFO L175 Difference]: Start difference. First operand has 94 places, 120 transitions, 872 flow. Second operand 8 states and 154 transitions. [2023-11-17 11:52:24,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 225 transitions, 1889 flow [2023-11-17 11:52:24,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 225 transitions, 1869 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-17 11:52:24,519 INFO L231 Difference]: Finished difference. Result has 102 places, 136 transitions, 1154 flow [2023-11-17 11:52:24,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1154, PETRI_PLACES=102, PETRI_TRANSITIONS=136} [2023-11-17 11:52:24,519 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 68 predicate places. [2023-11-17 11:52:24,519 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 136 transitions, 1154 flow [2023-11-17 11:52:24,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:24,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:24,520 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, 1, 1] [2023-11-17 11:52:24,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-17 11:52:24,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-17 11:52:24,726 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)] === [2023-11-17 11:52:24,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:24,726 INFO L85 PathProgramCache]: Analyzing trace with hash 2038178630, now seen corresponding path program 3 times [2023-11-17 11:52:24,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:24,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955961492] [2023-11-17 11:52:24,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:24,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:25,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:52:25,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:25,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955961492] [2023-11-17 11:52:25,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955961492] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:25,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827905789] [2023-11-17 11:52:25,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 11:52:25,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:25,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:52:25,009 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) [2023-11-17 11:52:25,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-17 11:52:25,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-17 11:52:25,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:52:25,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-17 11:52:25,136 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:52:25,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 11:52:25,276 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 11:52:25,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827905789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:52:25,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 11:52:25,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 16 [2023-11-17 11:52:25,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414146133] [2023-11-17 11:52:25,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:52:25,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 11:52:25,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:25,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 11:52:25,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2023-11-17 11:52:25,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 54 [2023-11-17 11:52:25,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 136 transitions, 1154 flow. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:25,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:25,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 54 [2023-11-17 11:52:25,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:26,164 INFO L124 PetriNetUnfolderBase]: 4931/7318 cut-off events. [2023-11-17 11:52:26,164 INFO L125 PetriNetUnfolderBase]: For 33418/33418 co-relation queries the response was YES. [2023-11-17 11:52:26,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26073 conditions, 7318 events. 4931/7318 cut-off events. For 33418/33418 co-relation queries the response was YES. Maximal size of possible extension queue 408. Compared 39621 event pairs, 866 based on Foata normal form. 194/6126 useless extension candidates. Maximal degree in co-relation 23507. Up to 2476 conditions per place. [2023-11-17 11:52:26,196 INFO L140 encePairwiseOnDemand]: 44/54 looper letters, 149 selfloop transitions, 61 changer transitions 12/222 dead transitions. [2023-11-17 11:52:26,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 222 transitions, 2028 flow [2023-11-17 11:52:26,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 11:52:26,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 11:52:26,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 164 transitions. [2023-11-17 11:52:26,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3037037037037037 [2023-11-17 11:52:26,197 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 164 transitions. [2023-11-17 11:52:26,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 164 transitions. [2023-11-17 11:52:26,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:26,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 164 transitions. [2023-11-17 11:52:26,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 16.4) internal successors, (164), 10 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:26,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 54.0) internal successors, (594), 11 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:26,199 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 54.0) internal successors, (594), 11 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:26,199 INFO L175 Difference]: Start difference. First operand has 102 places, 136 transitions, 1154 flow. Second operand 10 states and 164 transitions. [2023-11-17 11:52:26,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 222 transitions, 2028 flow [2023-11-17 11:52:26,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 222 transitions, 2002 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-17 11:52:26,277 INFO L231 Difference]: Finished difference. Result has 113 places, 145 transitions, 1464 flow [2023-11-17 11:52:26,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1140, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1464, PETRI_PLACES=113, PETRI_TRANSITIONS=145} [2023-11-17 11:52:26,278 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 79 predicate places. [2023-11-17 11:52:26,278 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 145 transitions, 1464 flow [2023-11-17 11:52:26,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:26,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:26,278 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, 1, 1] [2023-11-17 11:52:26,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-17 11:52:26,483 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,SelfDestructingSolverStorable13 [2023-11-17 11:52:26,483 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)] === [2023-11-17 11:52:26,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:26,484 INFO L85 PathProgramCache]: Analyzing trace with hash -337362916, now seen corresponding path program 4 times [2023-11-17 11:52:26,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:26,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442264401] [2023-11-17 11:52:26,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:26,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:26,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 11:52:26,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:26,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442264401] [2023-11-17 11:52:26,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442264401] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:26,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12044490] [2023-11-17 11:52:26,733 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 11:52:26,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:26,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:52:26,734 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) [2023-11-17 11:52:26,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-17 11:52:26,848 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 11:52:26,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:52:26,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 11:52:26,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:52:26,909 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:52:26,911 INFO L378 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 103 treesize of output 100 [2023-11-17 11:52:27,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 11:52:27,130 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:52:27,378 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:52:27,378 INFO L378 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 145 treesize of output 125 [2023-11-17 11:52:27,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 11:52:27,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12044490] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:52:27,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:52:27,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 21 [2023-11-17 11:52:27,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433800778] [2023-11-17 11:52:27,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:52:27,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-17 11:52:27,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:27,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-17 11:52:27,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2023-11-17 11:52:27,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 54 [2023-11-17 11:52:27,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 145 transitions, 1464 flow. Second operand has 22 states, 22 states have (on average 6.863636363636363) internal successors, (151), 22 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:27,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:27,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 54 [2023-11-17 11:52:27,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:31,417 INFO L124 PetriNetUnfolderBase]: 9075/13304 cut-off events. [2023-11-17 11:52:31,418 INFO L125 PetriNetUnfolderBase]: For 78400/78400 co-relation queries the response was YES. [2023-11-17 11:52:31,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51842 conditions, 13304 events. 9075/13304 cut-off events. For 78400/78400 co-relation queries the response was YES. Maximal size of possible extension queue 735. Compared 77742 event pairs, 268 based on Foata normal form. 10/10920 useless extension candidates. Maximal degree in co-relation 48274. Up to 2140 conditions per place. [2023-11-17 11:52:31,556 INFO L140 encePairwiseOnDemand]: 36/54 looper letters, 481 selfloop transitions, 228 changer transitions 87/796 dead transitions. [2023-11-17 11:52:31,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 796 transitions, 6599 flow [2023-11-17 11:52:31,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-11-17 11:52:31,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-11-17 11:52:31,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 782 transitions. [2023-11-17 11:52:31,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27849002849002846 [2023-11-17 11:52:31,575 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 782 transitions. [2023-11-17 11:52:31,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 782 transitions. [2023-11-17 11:52:31,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:31,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 782 transitions. [2023-11-17 11:52:31,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 15.038461538461538) internal successors, (782), 52 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:31,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 54.0) internal successors, (2862), 53 states have internal predecessors, (2862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:31,583 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 54.0) internal successors, (2862), 53 states have internal predecessors, (2862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:31,583 INFO L175 Difference]: Start difference. First operand has 113 places, 145 transitions, 1464 flow. Second operand 52 states and 782 transitions. [2023-11-17 11:52:31,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 796 transitions, 6599 flow [2023-11-17 11:52:32,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 796 transitions, 6479 flow, removed 47 selfloop flow, removed 4 redundant places. [2023-11-17 11:52:32,099 INFO L231 Difference]: Finished difference. Result has 198 places, 354 transitions, 3897 flow [2023-11-17 11:52:32,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1420, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=3897, PETRI_PLACES=198, PETRI_TRANSITIONS=354} [2023-11-17 11:52:32,100 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 164 predicate places. [2023-11-17 11:52:32,100 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 354 transitions, 3897 flow [2023-11-17 11:52:32,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.863636363636363) internal successors, (151), 22 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:32,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:32,100 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, 1, 1, 1] [2023-11-17 11:52:32,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-17 11:52:32,321 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,SelfDestructingSolverStorable14 [2023-11-17 11:52:32,321 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:52:32,322 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:32,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1857735861, now seen corresponding path program 1 times [2023-11-17 11:52:32,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:32,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789881057] [2023-11-17 11:52:32,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:32,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:32,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:32,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 11:52:32,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:32,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789881057] [2023-11-17 11:52:32,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789881057] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:52:32,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:52:32,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 11:52:32,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811670505] [2023-11-17 11:52:32,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:52:32,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:52:32,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:32,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:52:32,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:52:32,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 54 [2023-11-17 11:52:32,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 354 transitions, 3897 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:32,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:32,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 54 [2023-11-17 11:52:32,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:34,434 INFO L124 PetriNetUnfolderBase]: 6551/9828 cut-off events. [2023-11-17 11:52:34,435 INFO L125 PetriNetUnfolderBase]: For 120497/120497 co-relation queries the response was YES. [2023-11-17 11:52:34,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56483 conditions, 9828 events. 6551/9828 cut-off events. For 120497/120497 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 57113 event pairs, 2074 based on Foata normal form. 456/9934 useless extension candidates. Maximal degree in co-relation 56409. Up to 6751 conditions per place. [2023-11-17 11:52:34,498 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 203 selfloop transitions, 4 changer transitions 102/309 dead transitions. [2023-11-17 11:52:34,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 309 transitions, 3714 flow [2023-11-17 11:52:34,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:52:34,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:52:34,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2023-11-17 11:52:34,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32592592592592595 [2023-11-17 11:52:34,499 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 88 transitions. [2023-11-17 11:52:34,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 88 transitions. [2023-11-17 11:52:34,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:34,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 88 transitions. [2023-11-17 11:52:34,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:34,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:34,500 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 54.0) internal successors, (324), 6 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:34,500 INFO L175 Difference]: Start difference. First operand has 198 places, 354 transitions, 3897 flow. Second operand 5 states and 88 transitions. [2023-11-17 11:52:34,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 309 transitions, 3714 flow [2023-11-17 11:52:35,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 309 transitions, 3069 flow, removed 217 selfloop flow, removed 21 redundant places. [2023-11-17 11:52:35,121 INFO L231 Difference]: Finished difference. Result has 174 places, 207 transitions, 1549 flow [2023-11-17 11:52:35,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2251, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1549, PETRI_PLACES=174, PETRI_TRANSITIONS=207} [2023-11-17 11:52:35,122 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 140 predicate places. [2023-11-17 11:52:35,122 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 207 transitions, 1549 flow [2023-11-17 11:52:35,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:35,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:35,122 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, 1, 1, 1] [2023-11-17 11:52:35,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-17 11:52:35,122 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:52:35,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:35,122 INFO L85 PathProgramCache]: Analyzing trace with hash -357177186, now seen corresponding path program 1 times [2023-11-17 11:52:35,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:35,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485654237] [2023-11-17 11:52:35,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:35,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:35,231 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 11:52:35,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:35,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485654237] [2023-11-17 11:52:35,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485654237] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:35,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134630472] [2023-11-17 11:52:35,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:35,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:35,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:52:35,233 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) [2023-11-17 11:52:35,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-17 11:52:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:35,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 11:52:35,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:52:35,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 11:52:35,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:52:35,456 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 11:52:35,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134630472] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:35,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 11:52:35,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2023-11-17 11:52:35,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438701647] [2023-11-17 11:52:35,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:52:35,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:52:35,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:52:35,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:52:35,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-11-17 11:52:35,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 54 [2023-11-17 11:52:35,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 207 transitions, 1549 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:35,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:52:35,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 54 [2023-11-17 11:52:35,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:52:36,729 INFO L124 PetriNetUnfolderBase]: 6015/8664 cut-off events. [2023-11-17 11:52:36,730 INFO L125 PetriNetUnfolderBase]: For 75733/75733 co-relation queries the response was YES. [2023-11-17 11:52:36,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42037 conditions, 8664 events. 6015/8664 cut-off events. For 75733/75733 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 45274 event pairs, 974 based on Foata normal form. 404/9066 useless extension candidates. Maximal degree in co-relation 41977. Up to 5074 conditions per place. [2023-11-17 11:52:36,779 INFO L140 encePairwiseOnDemand]: 46/54 looper letters, 214 selfloop transitions, 41 changer transitions 0/255 dead transitions. [2023-11-17 11:52:36,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 255 transitions, 2474 flow [2023-11-17 11:52:36,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:52:36,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:52:36,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2023-11-17 11:52:36,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.21693121693121692 [2023-11-17 11:52:36,780 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 82 transitions. [2023-11-17 11:52:36,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 82 transitions. [2023-11-17 11:52:36,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:52:36,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 82 transitions. [2023-11-17 11:52:36,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:36,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:36,781 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 54.0) internal successors, (432), 8 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:36,781 INFO L175 Difference]: Start difference. First operand has 174 places, 207 transitions, 1549 flow. Second operand 7 states and 82 transitions. [2023-11-17 11:52:36,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 255 transitions, 2474 flow [2023-11-17 11:52:36,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 255 transitions, 2370 flow, removed 48 selfloop flow, removed 18 redundant places. [2023-11-17 11:52:36,978 INFO L231 Difference]: Finished difference. Result has 122 places, 209 transitions, 1689 flow [2023-11-17 11:52:36,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1418, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1689, PETRI_PLACES=122, PETRI_TRANSITIONS=209} [2023-11-17 11:52:36,978 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 88 predicate places. [2023-11-17 11:52:36,978 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 209 transitions, 1689 flow [2023-11-17 11:52:36,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:52:36,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:52:36,979 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, 1, 1, 1, 1] [2023-11-17 11:52:36,986 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-11-17 11:52:37,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-17 11:52:37,183 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:52:37,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:52:37,184 INFO L85 PathProgramCache]: Analyzing trace with hash 569606814, now seen corresponding path program 1 times [2023-11-17 11:52:37,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:52:37,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301531239] [2023-11-17 11:52:37,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:37,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:52:37,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:37,932 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:52:37,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:52:37,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301531239] [2023-11-17 11:52:37,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301531239] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:52:37,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326303072] [2023-11-17 11:52:37,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:52:37,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:52:37,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:52:37,934 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:52:37,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-17 11:52:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:52:38,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 51 conjunts are in the unsatisfiable core [2023-11-17 11:52:38,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:52:38,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-17 11:52:38,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 11:52:38,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 11:52:38,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 11:52:38,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 11:52:38,563 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-17 11:52:38,563 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2023-11-17 11:52:38,800 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:52:38,800 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:52:39,804 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:52:39,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 266 treesize of output 158 [2023-11-17 11:52:39,877 INFO L349 Elim1Store]: treesize reduction 15, result has 55.9 percent of original size [2023-11-17 11:52:39,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 105260 treesize of output 99582 [2023-11-17 11:52:40,360 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:52:40,363 INFO L378 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 4764 treesize of output 4644 [2023-11-17 11:52:40,447 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:52:40,447 INFO L378 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 4620 treesize of output 4356 [2023-11-17 11:52:40,540 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:52:40,541 INFO L378 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 4118 treesize of output 3630 [2023-11-17 11:55:32,974 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:55:32,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 67 [2023-11-17 11:55:33,011 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:55:33,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 2957 treesize of output 2798 [2023-11-17 11:55:33,086 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:55:33,087 INFO L378 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 1373 treesize of output 1301 [2023-11-17 11:55:33,119 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:55:33,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1046 treesize of output 927 [2023-11-17 11:55:33,158 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:55:33,158 INFO L378 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 1149 treesize of output 1125 [2023-11-17 11:55:39,818 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:55:39,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 67 [2023-11-17 11:55:39,853 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:55:39,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 5325 treesize of output 5038 [2023-11-17 11:55:39,926 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:55:39,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1110 treesize of output 991 [2023-11-17 11:55:39,970 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:55:39,970 INFO L378 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 1245 treesize of output 1221 [2023-11-17 11:55:40,007 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:55:40,007 INFO L378 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 1197 treesize of output 1125 [2023-11-17 11:55:47,918 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:55:47,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326303072] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:55:47,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:55:47,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 40 [2023-11-17 11:55:47,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850575252] [2023-11-17 11:55:47,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:55:47,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-17 11:55:47,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:55:47,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-17 11:55:47,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1478, Unknown=21, NotChecked=0, Total=1640 [2023-11-17 11:55:47,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 54 [2023-11-17 11:55:47,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 209 transitions, 1689 flow. Second operand has 41 states, 41 states have (on average 5.829268292682927) internal successors, (239), 41 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:55:47,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:55:47,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 54 [2023-11-17 11:55:47,920 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:55:52,879 INFO L124 PetriNetUnfolderBase]: 14197/21402 cut-off events. [2023-11-17 11:55:52,879 INFO L125 PetriNetUnfolderBase]: For 97001/97001 co-relation queries the response was YES. [2023-11-17 11:55:53,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95181 conditions, 21402 events. 14197/21402 cut-off events. For 97001/97001 co-relation queries the response was YES. Maximal size of possible extension queue 1184. Compared 141581 event pairs, 800 based on Foata normal form. 336/20832 useless extension candidates. Maximal degree in co-relation 95135. Up to 5330 conditions per place. [2023-11-17 11:55:53,109 INFO L140 encePairwiseOnDemand]: 38/54 looper letters, 853 selfloop transitions, 134 changer transitions 4/991 dead transitions. [2023-11-17 11:55:53,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 991 transitions, 8916 flow [2023-11-17 11:55:53,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-17 11:55:53,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-17 11:55:53,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 388 transitions. [2023-11-17 11:55:53,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2874074074074074 [2023-11-17 11:55:53,111 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 388 transitions. [2023-11-17 11:55:53,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 388 transitions. [2023-11-17 11:55:53,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:55:53,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 388 transitions. [2023-11-17 11:55:53,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 15.52) internal successors, (388), 25 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:55:53,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 54.0) internal successors, (1404), 26 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:55:53,113 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 54.0) internal successors, (1404), 26 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:55:53,113 INFO L175 Difference]: Start difference. First operand has 122 places, 209 transitions, 1689 flow. Second operand 25 states and 388 transitions. [2023-11-17 11:55:53,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 991 transitions, 8916 flow [2023-11-17 11:55:53,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 991 transitions, 8698 flow, removed 104 selfloop flow, removed 4 redundant places. [2023-11-17 11:55:53,911 INFO L231 Difference]: Finished difference. Result has 156 places, 294 transitions, 2816 flow [2023-11-17 11:55:53,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=1663, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2816, PETRI_PLACES=156, PETRI_TRANSITIONS=294} [2023-11-17 11:55:53,912 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 122 predicate places. [2023-11-17 11:55:53,912 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 294 transitions, 2816 flow [2023-11-17 11:55:53,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 5.829268292682927) internal successors, (239), 41 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:55:53,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:55:53,912 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, 1, 1, 1, 1] [2023-11-17 11:55:53,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-17 11:55:54,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-17 11:55:54,117 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:55:54,118 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:55:54,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1455466818, now seen corresponding path program 1 times [2023-11-17 11:55:54,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:55:54,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976415407] [2023-11-17 11:55:54,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:55:54,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:55:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:55:54,325 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 11:55:54,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:55:54,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976415407] [2023-11-17 11:55:54,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976415407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:55:54,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:55:54,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 11:55:54,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901126147] [2023-11-17 11:55:54,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:55:54,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:55:54,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:55:54,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:55:54,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:55:54,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 54 [2023-11-17 11:55:54,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 294 transitions, 2816 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:55:54,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:55:54,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 54 [2023-11-17 11:55:54,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:55:58,181 INFO L124 PetriNetUnfolderBase]: 17197/26032 cut-off events. [2023-11-17 11:55:58,181 INFO L125 PetriNetUnfolderBase]: For 219690/219690 co-relation queries the response was YES. [2023-11-17 11:55:58,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130503 conditions, 26032 events. 17197/26032 cut-off events. For 219690/219690 co-relation queries the response was YES. Maximal size of possible extension queue 1421. Compared 179816 event pairs, 4704 based on Foata normal form. 42/26074 useless extension candidates. Maximal degree in co-relation 130443. Up to 16664 conditions per place. [2023-11-17 11:55:58,465 INFO L140 encePairwiseOnDemand]: 48/54 looper letters, 287 selfloop transitions, 5 changer transitions 230/522 dead transitions. [2023-11-17 11:55:58,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 522 transitions, 6088 flow [2023-11-17 11:55:58,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:55:58,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:55:58,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2023-11-17 11:55:58,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2654320987654321 [2023-11-17 11:55:58,466 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 86 transitions. [2023-11-17 11:55:58,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 86 transitions. [2023-11-17 11:55:58,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:55:58,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 86 transitions. [2023-11-17 11:55:58,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:55:58,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:55:58,467 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 54.0) internal successors, (378), 7 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:55:58,467 INFO L175 Difference]: Start difference. First operand has 156 places, 294 transitions, 2816 flow. Second operand 6 states and 86 transitions. [2023-11-17 11:55:58,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 522 transitions, 6088 flow [2023-11-17 11:56:00,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 522 transitions, 5931 flow, removed 44 selfloop flow, removed 7 redundant places. [2023-11-17 11:56:00,158 INFO L231 Difference]: Finished difference. Result has 156 places, 292 transitions, 2760 flow [2023-11-17 11:56:00,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2697, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2760, PETRI_PLACES=156, PETRI_TRANSITIONS=292} [2023-11-17 11:56:00,158 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 122 predicate places. [2023-11-17 11:56:00,158 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 292 transitions, 2760 flow [2023-11-17 11:56:00,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:56:00,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:00,159 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, 1, 1, 1, 1] [2023-11-17 11:56:00,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-17 11:56:00,159 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:56:00,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:00,159 INFO L85 PathProgramCache]: Analyzing trace with hash 265458300, now seen corresponding path program 2 times [2023-11-17 11:56:00,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:00,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141657976] [2023-11-17 11:56:00,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:00,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:00,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:00,693 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:56:00,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:00,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141657976] [2023-11-17 11:56:00,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141657976] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:56:00,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344753716] [2023-11-17 11:56:00,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 11:56:00,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:56:00,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:56:00,695 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:56:00,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-17 11:56:00,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 11:56:00,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:56:00,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-17 11:56:00,913 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:56:01,278 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:56:01,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:56:01,777 INFO L349 Elim1Store]: treesize reduction 33, result has 91.3 percent of original size [2023-11-17 11:56:01,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 128 treesize of output 385 [2023-11-17 11:56:04,573 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:56:04,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344753716] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:56:04,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:56:04,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 34 [2023-11-17 11:56:04,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339135186] [2023-11-17 11:56:04,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:56:04,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-17 11:56:04,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:04,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-17 11:56:04,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=975, Unknown=0, NotChecked=0, Total=1122 [2023-11-17 11:56:04,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 54 [2023-11-17 11:56:04,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 292 transitions, 2760 flow. Second operand has 34 states, 34 states have (on average 6.205882352941177) internal successors, (211), 34 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:56:04,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:04,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 54 [2023-11-17 11:56:04,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:09,761 INFO L124 PetriNetUnfolderBase]: 18087/27304 cut-off events. [2023-11-17 11:56:09,761 INFO L125 PetriNetUnfolderBase]: For 239022/239022 co-relation queries the response was YES. [2023-11-17 11:56:10,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137398 conditions, 27304 events. 18087/27304 cut-off events. For 239022/239022 co-relation queries the response was YES. Maximal size of possible extension queue 1521. Compared 188095 event pairs, 4890 based on Foata normal form. 136/27440 useless extension candidates. Maximal degree in co-relation 137336. Up to 16792 conditions per place. [2023-11-17 11:56:10,099 INFO L140 encePairwiseOnDemand]: 37/54 looper letters, 681 selfloop transitions, 89 changer transitions 4/774 dead transitions. [2023-11-17 11:56:10,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 774 transitions, 8211 flow [2023-11-17 11:56:10,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-17 11:56:10,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-17 11:56:10,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 211 transitions. [2023-11-17 11:56:10,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24421296296296297 [2023-11-17 11:56:10,100 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 211 transitions. [2023-11-17 11:56:10,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 211 transitions. [2023-11-17 11:56:10,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:10,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 211 transitions. [2023-11-17 11:56:10,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 13.1875) internal successors, (211), 16 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:56:10,102 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 54.0) internal successors, (918), 17 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:56:10,102 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 54.0) internal successors, (918), 17 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:56:10,102 INFO L175 Difference]: Start difference. First operand has 156 places, 292 transitions, 2760 flow. Second operand 16 states and 211 transitions. [2023-11-17 11:56:10,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 774 transitions, 8211 flow [2023-11-17 11:56:11,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 774 transitions, 8113 flow, removed 35 selfloop flow, removed 6 redundant places. [2023-11-17 11:56:11,953 INFO L231 Difference]: Finished difference. Result has 168 places, 331 transitions, 3532 flow [2023-11-17 11:56:11,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=2691, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3532, PETRI_PLACES=168, PETRI_TRANSITIONS=331} [2023-11-17 11:56:11,954 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 134 predicate places. [2023-11-17 11:56:11,954 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 331 transitions, 3532 flow [2023-11-17 11:56:11,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 6.205882352941177) internal successors, (211), 34 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:56:11,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:11,954 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, 1, 1, 1, 1] [2023-11-17 11:56:11,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-17 11:56:12,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:56:12,162 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:56:12,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:12,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1647408278, now seen corresponding path program 3 times [2023-11-17 11:56:12,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:12,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759501910] [2023-11-17 11:56:12,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:12,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:12,752 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:56:12,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:12,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759501910] [2023-11-17 11:56:12,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759501910] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:56:12,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167282388] [2023-11-17 11:56:12,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 11:56:12,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:56:12,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:56:12,754 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:56:12,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-17 11:56:12,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-17 11:56:12,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:56:12,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-17 11:56:12,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:56:13,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-17 11:56:13,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 11:56:13,326 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 11:56:13,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 11:56:13,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 11:56:13,605 INFO L349 Elim1Store]: treesize reduction 37, result has 19.6 percent of original size [2023-11-17 11:56:13,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 34 [2023-11-17 11:56:13,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-11-17 11:56:13,705 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:56:13,706 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:56:14,501 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:56:14,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 61 [2023-11-17 11:56:14,520 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:56:14,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1197 treesize of output 1102 [2023-11-17 11:56:14,551 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:56:14,551 INFO L378 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 525 treesize of output 517 [2023-11-17 11:56:14,574 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:56:14,574 INFO L378 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 493 treesize of output 453 [2023-11-17 11:56:15,399 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:56:15,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 61 [2023-11-17 11:56:15,416 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:56:15,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1197 treesize of output 1102 [2023-11-17 11:56:15,439 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:56:15,440 INFO L378 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 525 treesize of output 485 [2023-11-17 11:56:15,460 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:56:15,460 INFO L378 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 461 treesize of output 453 [2023-11-17 11:56:18,625 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:56:18,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 260 treesize of output 152 [2023-11-17 11:56:18,677 INFO L349 Elim1Store]: treesize reduction 11, result has 67.6 percent of original size [2023-11-17 11:56:18,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15628 treesize of output 14754 [2023-11-17 11:56:18,889 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:56:18,889 INFO L378 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 3916 treesize of output 3812 [2023-11-17 11:56:18,977 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:56:18,978 INFO L378 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 3788 treesize of output 3556 [2023-11-17 11:56:19,062 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:56:19,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 3104 treesize of output 2728 [2023-11-17 11:56:35,239 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 2 refuted. 1 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:56:35,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167282388] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:56:35,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:56:35,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 40 [2023-11-17 11:56:35,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198979923] [2023-11-17 11:56:35,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:56:35,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-17 11:56:35,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:56:35,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-17 11:56:35,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1477, Unknown=26, NotChecked=0, Total=1640 [2023-11-17 11:56:35,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 54 [2023-11-17 11:56:35,241 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 331 transitions, 3532 flow. Second operand has 41 states, 41 states have (on average 5.829268292682927) internal successors, (239), 41 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:56:35,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:56:35,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 54 [2023-11-17 11:56:35,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:56:42,117 INFO L124 PetriNetUnfolderBase]: 21627/32616 cut-off events. [2023-11-17 11:56:42,117 INFO L125 PetriNetUnfolderBase]: For 306572/306572 co-relation queries the response was YES. [2023-11-17 11:56:42,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167845 conditions, 32616 events. 21627/32616 cut-off events. For 306572/306572 co-relation queries the response was YES. Maximal size of possible extension queue 1745. Compared 229076 event pairs, 6509 based on Foata normal form. 136/32752 useless extension candidates. Maximal degree in co-relation 167781. Up to 22738 conditions per place. [2023-11-17 11:56:42,469 INFO L140 encePairwiseOnDemand]: 37/54 looper letters, 705 selfloop transitions, 98 changer transitions 4/807 dead transitions. [2023-11-17 11:56:42,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 807 transitions, 9033 flow [2023-11-17 11:56:42,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-17 11:56:42,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-17 11:56:42,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 226 transitions. [2023-11-17 11:56:42,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24618736383442266 [2023-11-17 11:56:42,470 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 226 transitions. [2023-11-17 11:56:42,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 226 transitions. [2023-11-17 11:56:42,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:56:42,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 226 transitions. [2023-11-17 11:56:42,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 13.294117647058824) internal successors, (226), 17 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:56:42,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 54.0) internal successors, (972), 18 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:56:42,472 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 54.0) internal successors, (972), 18 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:56:42,472 INFO L175 Difference]: Start difference. First operand has 168 places, 331 transitions, 3532 flow. Second operand 17 states and 226 transitions. [2023-11-17 11:56:42,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 807 transitions, 9033 flow [2023-11-17 11:56:44,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 807 transitions, 8795 flow, removed 73 selfloop flow, removed 9 redundant places. [2023-11-17 11:56:44,850 INFO L231 Difference]: Finished difference. Result has 179 places, 351 transitions, 3834 flow [2023-11-17 11:56:44,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=54, PETRI_DIFFERENCE_MINUEND_FLOW=3309, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3834, PETRI_PLACES=179, PETRI_TRANSITIONS=351} [2023-11-17 11:56:44,851 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 145 predicate places. [2023-11-17 11:56:44,851 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 351 transitions, 3834 flow [2023-11-17 11:56:44,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 5.829268292682927) internal successors, (239), 41 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:56:44,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:56:44,851 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, 1, 1, 1, 1] [2023-11-17 11:56:44,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-17 11:56:45,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:56:45,056 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 11:56:45,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:56:45,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1427521933, now seen corresponding path program 1 times [2023-11-17 11:56:45,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:56:45,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16957887] [2023-11-17 11:56:45,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:45,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:56:45,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:46,239 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:56:46,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:56:46,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16957887] [2023-11-17 11:56:46,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16957887] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:56:46,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827760473] [2023-11-17 11:56:46,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:56:46,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:56:46,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:56:46,241 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:56:46,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-17 11:56:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:56:46,374 INFO L262 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 64 conjunts are in the unsatisfiable core [2023-11-17 11:56:46,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:56:46,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 11:56:46,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 11:56:46,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 11:56:46,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-17 11:56:46,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-17 11:56:46,713 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-17 11:56:46,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 11:56:46,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 11:56:46,941 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-17 11:56:46,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2023-11-17 11:56:47,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 11:56:47,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 11:56:47,029 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-17 11:56:47,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 18 [2023-11-17 11:56:47,308 INFO L349 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-11-17 11:56:47,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 62 treesize of output 30 [2023-11-17 11:56:47,365 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:56:47,366 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:56:48,972 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:56:48,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 60 [2023-11-17 11:56:49,017 INFO L349 Elim1Store]: treesize reduction 4, result has 88.2 percent of original size [2023-11-17 11:56:49,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9020 treesize of output 8521 [2023-11-17 11:56:49,073 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:56:49,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1046 treesize of output 926 [2023-11-17 11:56:49,101 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:56:49,101 INFO L378 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 972 treesize of output 956 [2023-11-17 11:56:49,124 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:56:49,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 886 treesize of output 830 [2023-11-17 11:57:04,871 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:57:04,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 310 treesize of output 178 [2023-11-17 11:57:04,932 INFO L349 Elim1Store]: treesize reduction 19, result has 44.1 percent of original size [2023-11-17 11:57:04,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 18448 treesize of output 17422 [2023-11-17 11:57:05,270 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:57:05,271 INFO L378 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 5610 treesize of output 5314 [2023-11-17 11:57:05,492 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:57:05,493 INFO L378 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 5290 treesize of output 4674 [2023-11-17 11:57:05,604 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 11:57:05,605 INFO L378 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 4704 treesize of output 4560 [2023-11-17 11:57:41,053 WARN L249 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-11-17 11:57:41,054 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2023-11-17 11:57:41,057 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 101 [2023-11-17 11:57:41,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-17 11:57:41,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-17 11:57:41,255 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:277) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:133) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.checkRedundancy(SimplifyDDA2.java:268) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convertForPreprocessedInputTerms(SimplifyDDA2.java:410) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:394) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.convert(SimplifyDDA2.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:88) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SimplifyDDA2.simplify(SimplifyDDA2.java:500) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:252) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplifyWithStatistics(SmtUtils.java:324) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify(QuantifierPusher.java:731) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:140) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.pushMinionEliminatees(QuantifierPushUtilsForSubsetPush.java:255) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:151) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:338) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:189) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:100) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:84) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:297) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:283) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:51) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:341) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:184) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) 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$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 69 more [2023-11-17 11:57:41,259 INFO L158 Benchmark]: Toolchain (without parser) took 333910.99ms. Allocated memory was 348.1MB in the beginning and 4.0GB in the end (delta: 3.7GB). Free memory was 304.6MB in the beginning and 1.2GB in the end (delta: -873.3MB). Peak memory consumption was 3.1GB. Max. memory is 8.0GB. [2023-11-17 11:57:41,259 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 184.5MB. Free memory is still 132.9MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:57:41,259 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.18ms. Allocated memory is still 348.1MB. Free memory was 304.4MB in the beginning and 291.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-11-17 11:57:41,259 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.65ms. Allocated memory is still 348.1MB. Free memory was 291.8MB in the beginning and 289.2MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 11:57:41,259 INFO L158 Benchmark]: Boogie Preprocessor took 34.20ms. Allocated memory is still 348.1MB. Free memory was 289.2MB in the beginning and 287.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:57:41,259 INFO L158 Benchmark]: RCFGBuilder took 878.15ms. Allocated memory is still 348.1MB. Free memory was 286.6MB in the beginning and 307.1MB in the end (delta: -20.6MB). Peak memory consumption was 93.7MB. Max. memory is 8.0GB. [2023-11-17 11:57:41,260 INFO L158 Benchmark]: TraceAbstraction took 332656.25ms. Allocated memory was 348.1MB in the beginning and 4.0GB in the end (delta: 3.7GB). Free memory was 306.6MB in the beginning and 1.2GB in the end (delta: -871.3MB). Peak memory consumption was 3.1GB. Max. memory is 8.0GB. [2023-11-17 11:57:41,260 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 184.5MB. Free memory is still 132.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 283.18ms. Allocated memory is still 348.1MB. Free memory was 304.4MB in the beginning and 291.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 52.65ms. Allocated memory is still 348.1MB. Free memory was 291.8MB in the beginning and 289.2MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 34.20ms. Allocated memory is still 348.1MB. Free memory was 289.2MB in the beginning and 287.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 878.15ms. Allocated memory is still 348.1MB. Free memory was 286.6MB in the beginning and 307.1MB in the end (delta: -20.6MB). Peak memory consumption was 93.7MB. Max. memory is 8.0GB. * TraceAbstraction took 332656.25ms. Allocated memory was 348.1MB in the beginning and 4.0GB in the end (delta: 3.7GB). Free memory was 306.6MB in the beginning and 1.2GB in the end (delta: -871.3MB). Peak memory consumption was 3.1GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.7s, 39 PlacesBefore, 34 PlacesAfterwards, 38 TransitionsBefore, 32 TransitionsAfterwards, 396 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 5 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 12 TotalNumberOfCompositions, 617 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 470, independent: 448, independent conditional: 0, independent unconditional: 448, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 254, independent: 242, independent conditional: 0, independent unconditional: 242, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 254, independent: 242, independent conditional: 0, independent unconditional: 242, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 12, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 28, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 470, independent: 206, independent conditional: 0, independent unconditional: 206, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 254, unknown conditional: 0, unknown unconditional: 254] , Statistics on independence cache: Total cache size (in pairs): 85, Positive cache size: 77, Positive conditional cache size: 0, Positive unconditional cache size: 77, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...