/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/popl20-more-array-sum-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 12:17:55,338 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 12:17:55,397 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 12:17:55,431 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 12:17:55,432 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 12:17:55,432 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 12:17:55,433 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 12:17:55,433 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 12:17:55,433 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 12:17:55,436 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 12:17:55,436 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 12:17:55,437 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 12:17:55,437 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 12:17:55,438 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 12:17:55,438 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 12:17:55,438 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 12:17:55,438 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 12:17:55,438 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 12:17:55,438 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 12:17:55,438 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 12:17:55,439 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 12:17:55,439 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 12:17:55,439 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 12:17:55,439 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 12:17:55,440 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 12:17:55,440 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:17:55,440 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 12:17:55,440 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 12:17:55,440 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 12:17:55,440 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 12:17:55,441 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 12:17:55,441 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 12:17:55,441 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 12:17:55,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 12:17:55,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 12:17:55,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 12:17:55,632 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 12:17:55,644 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 12:17:55,645 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.wvr.c [2023-11-17 12:17:56,786 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 12:17:56,922 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 12:17:56,923 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.wvr.c [2023-11-17 12:17:56,928 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f481943f7/42b4b969a9cd457fb075a84aad5fd010/FLAG11dd9c6cc [2023-11-17 12:17:56,938 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f481943f7/42b4b969a9cd457fb075a84aad5fd010 [2023-11-17 12:17:56,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 12:17:56,941 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 12:17:56,942 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 12:17:56,942 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 12:17:56,944 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 12:17:56,945 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:17:56" (1/1) ... [2023-11-17 12:17:56,945 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68e6604c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:56, skipping insertion in model container [2023-11-17 12:17:56,946 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:17:56" (1/1) ... [2023-11-17 12:17:56,964 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 12:17:57,062 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.wvr.c[2800,2813] [2023-11-17 12:17:57,072 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:17:57,083 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 12:17:57,099 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-array-sum-alt.wvr.c[2800,2813] [2023-11-17 12:17:57,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:17:57,107 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:17:57,107 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:17:57,111 INFO L206 MainTranslator]: Completed translation [2023-11-17 12:17:57,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:57 WrapperNode [2023-11-17 12:17:57,112 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 12:17:57,112 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 12:17:57,113 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 12:17:57,113 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 12:17:57,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:57" (1/1) ... [2023-11-17 12:17:57,122 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:57" (1/1) ... [2023-11-17 12:17:57,140 INFO L138 Inliner]: procedures = 25, calls = 51, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 209 [2023-11-17 12:17:57,140 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 12:17:57,140 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 12:17:57,140 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 12:17:57,143 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 12:17:57,149 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:57" (1/1) ... [2023-11-17 12:17:57,149 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:57" (1/1) ... [2023-11-17 12:17:57,151 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:57" (1/1) ... [2023-11-17 12:17:57,151 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:57" (1/1) ... [2023-11-17 12:17:57,157 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:57" (1/1) ... [2023-11-17 12:17:57,159 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:57" (1/1) ... [2023-11-17 12:17:57,161 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:57" (1/1) ... [2023-11-17 12:17:57,161 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:57" (1/1) ... [2023-11-17 12:17:57,163 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 12:17:57,164 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 12:17:57,164 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 12:17:57,164 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 12:17:57,165 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:57" (1/1) ... [2023-11-17 12:17:57,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:17:57,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:17:57,218 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 12:17:57,265 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 12:17:57,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 12:17:57,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 12:17:57,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 12:17:57,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 12:17:57,284 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 12:17:57,284 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 12:17:57,284 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 12:17:57,284 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 12:17:57,284 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 12:17:57,284 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 12:17:57,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 12:17:57,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 12:17:57,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 12:17:57,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 12:17:57,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 12:17:57,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 12:17:57,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 12:17:57,286 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 12:17:57,384 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 12:17:57,385 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 12:17:57,606 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 12:17:57,903 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 12:17:57,903 INFO L307 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-17 12:17:57,905 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:17:57 BoogieIcfgContainer [2023-11-17 12:17:57,905 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 12:17:57,906 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 12:17:57,906 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 12:17:57,908 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 12:17:57,908 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:17:56" (1/3) ... [2023-11-17 12:17:57,909 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68dff09b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:17:57, skipping insertion in model container [2023-11-17 12:17:57,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:17:57" (2/3) ... [2023-11-17 12:17:57,909 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68dff09b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:17:57, skipping insertion in model container [2023-11-17 12:17:57,909 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:17:57" (3/3) ... [2023-11-17 12:17:57,910 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt.wvr.c [2023-11-17 12:17:57,926 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 12:17:57,926 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 12:17:57,926 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 12:17:57,975 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-17 12:17:58,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 38 transitions, 97 flow [2023-11-17 12:17:58,034 INFO L124 PetriNetUnfolderBase]: 4/35 cut-off events. [2023-11-17 12:17:58,035 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 12:17:58,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 35 events. 4/35 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2023-11-17 12:17:58,038 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 38 transitions, 97 flow [2023-11-17 12:17:58,040 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 34 transitions, 86 flow [2023-11-17 12:17:58,042 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 12:17:58,050 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 34 transitions, 86 flow [2023-11-17 12:17:58,052 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 34 transitions, 86 flow [2023-11-17 12:17:58,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 34 transitions, 86 flow [2023-11-17 12:17:58,061 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2023-11-17 12:17:58,061 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 12:17:58,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 34 events. 4/34 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 47 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2023-11-17 12:17:58,062 INFO L119 LiptonReduction]: Number of co-enabled transitions 396 [2023-11-17 12:17:58,455 INFO L134 LiptonReduction]: Checked pairs total: 552 [2023-11-17 12:17:58,455 INFO L136 LiptonReduction]: Total number of compositions: 8 [2023-11-17 12:17:58,467 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 12:17:58,473 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;@78285c14, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 12:17:58,473 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 12:17:58,483 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 12:17:58,483 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2023-11-17 12:17:58,483 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-17 12:17:58,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:17:58,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:17:58,484 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 12:17:58,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:17:58,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1845884895, now seen corresponding path program 1 times [2023-11-17 12:17:58,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:17:58,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534304654] [2023-11-17 12:17:58,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:17:58,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:17:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:17:58,826 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 12:17:58,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:17:58,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534304654] [2023-11-17 12:17:58,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534304654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:17:58,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:17:58,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 12:17:58,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327662583] [2023-11-17 12:17:58,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:17:58,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:17:58,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:17:58,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:17:58,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:17:58,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 46 [2023-11-17 12:17:58,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 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 12:17:58,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:17:58,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 46 [2023-11-17 12:17:58,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:17:59,004 INFO L124 PetriNetUnfolderBase]: 723/1054 cut-off events. [2023-11-17 12:17:59,004 INFO L125 PetriNetUnfolderBase]: For 82/82 co-relation queries the response was YES. [2023-11-17 12:17:59,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2213 conditions, 1054 events. 723/1054 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3837 event pairs, 253 based on Foata normal form. 1/826 useless extension candidates. Maximal degree in co-relation 1702. Up to 632 conditions per place. [2023-11-17 12:17:59,010 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 42 selfloop transitions, 4 changer transitions 1/47 dead transitions. [2023-11-17 12:17:59,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 47 transitions, 221 flow [2023-11-17 12:17:59,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:17:59,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:17:59,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2023-11-17 12:17:59,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-11-17 12:17:59,019 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 69 transitions. [2023-11-17 12:17:59,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 69 transitions. [2023-11-17 12:17:59,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:17:59,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 69 transitions. [2023-11-17 12:17:59,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 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 12:17:59,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 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 12:17:59,028 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 46.0) internal successors, (184), 4 states have internal predecessors, (184), 0 states have call successors, (0), 0 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 12:17:59,029 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 70 flow. Second operand 3 states and 69 transitions. [2023-11-17 12:17:59,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 47 transitions, 221 flow [2023-11-17 12:17:59,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 47 transitions, 199 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-17 12:17:59,036 INFO L231 Difference]: Finished difference. Result has 29 places, 29 transitions, 84 flow [2023-11-17 12:17:59,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=29, PETRI_TRANSITIONS=29} [2023-11-17 12:17:59,041 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -3 predicate places. [2023-11-17 12:17:59,042 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 84 flow [2023-11-17 12:17:59,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 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 12:17:59,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:17:59,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:17:59,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 12:17:59,044 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 12:17:59,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:17:59,044 INFO L85 PathProgramCache]: Analyzing trace with hash -702259779, now seen corresponding path program 1 times [2023-11-17 12:17:59,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:17:59,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708267017] [2023-11-17 12:17:59,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:17:59,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:17:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:17:59,168 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 12:17:59,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:17:59,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708267017] [2023-11-17 12:17:59,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708267017] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:17:59,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:17:59,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:17:59,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616662793] [2023-11-17 12:17:59,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:17:59,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:17:59,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:17:59,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:17:59,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:17:59,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 46 [2023-11-17 12:17:59,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 84 flow. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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 12:17:59,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:17:59,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 46 [2023-11-17 12:17:59,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:17:59,354 INFO L124 PetriNetUnfolderBase]: 1341/1989 cut-off events. [2023-11-17 12:17:59,354 INFO L125 PetriNetUnfolderBase]: For 287/287 co-relation queries the response was YES. [2023-11-17 12:17:59,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4597 conditions, 1989 events. 1341/1989 cut-off events. For 287/287 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 8386 event pairs, 847 based on Foata normal form. 78/1777 useless extension candidates. Maximal degree in co-relation 1720. Up to 1055 conditions per place. [2023-11-17 12:17:59,364 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 65 selfloop transitions, 5 changer transitions 0/70 dead transitions. [2023-11-17 12:17:59,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 70 transitions, 336 flow [2023-11-17 12:17:59,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:17:59,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:17:59,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 104 transitions. [2023-11-17 12:17:59,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45217391304347826 [2023-11-17 12:17:59,368 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 104 transitions. [2023-11-17 12:17:59,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 104 transitions. [2023-11-17 12:17:59,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:17:59,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 104 transitions. [2023-11-17 12:17:59,370 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 20.8) internal successors, (104), 5 states have internal predecessors, (104), 0 states have call successors, (0), 0 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 12:17:59,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 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 12:17:59,371 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 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 12:17:59,371 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 84 flow. Second operand 5 states and 104 transitions. [2023-11-17 12:17:59,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 70 transitions, 336 flow [2023-11-17 12:17:59,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 70 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:17:59,373 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 118 flow [2023-11-17 12:17:59,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=118, PETRI_PLACES=35, PETRI_TRANSITIONS=33} [2023-11-17 12:17:59,374 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2023-11-17 12:17:59,374 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 118 flow [2023-11-17 12:17:59,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 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 12:17:59,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:17:59,376 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 12:17:59,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 12:17:59,378 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 12:17:59,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:17:59,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1184309159, now seen corresponding path program 1 times [2023-11-17 12:17:59,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:17:59,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194654209] [2023-11-17 12:17:59,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:17:59,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:17:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:17:59,529 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 12:17:59,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:17:59,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194654209] [2023-11-17 12:17:59,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194654209] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:17:59,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932352140] [2023-11-17 12:17:59,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:17:59,531 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:17:59,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:17:59,534 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 12:17:59,542 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 12:17:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:17:59,658 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 12:17:59,662 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:17:59,767 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 12:17:59,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:17:59,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:17:59,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932352140] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 12:17:59,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 12:17:59,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2023-11-17 12:17:59,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178712025] [2023-11-17 12:17:59,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:17:59,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 12:17:59,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:17:59,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 12:17:59,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-11-17 12:17:59,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 46 [2023-11-17 12:17:59,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 118 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 12:17:59,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:17:59,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 46 [2023-11-17 12:17:59,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:18:00,175 INFO L124 PetriNetUnfolderBase]: 1609/2387 cut-off events. [2023-11-17 12:18:00,176 INFO L125 PetriNetUnfolderBase]: For 1159/1159 co-relation queries the response was YES. [2023-11-17 12:18:00,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5964 conditions, 2387 events. 1609/2387 cut-off events. For 1159/1159 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 10599 event pairs, 591 based on Foata normal form. 0/2038 useless extension candidates. Maximal degree in co-relation 3597. Up to 727 conditions per place. [2023-11-17 12:18:00,186 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 112 selfloop transitions, 24 changer transitions 0/136 dead transitions. [2023-11-17 12:18:00,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 136 transitions, 715 flow [2023-11-17 12:18:00,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 12:18:00,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 12:18:00,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2023-11-17 12:18:00,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41956521739130437 [2023-11-17 12:18:00,190 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 193 transitions. [2023-11-17 12:18:00,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 193 transitions. [2023-11-17 12:18:00,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:18:00,190 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 193 transitions. [2023-11-17 12:18:00,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 19.3) internal successors, (193), 10 states have internal predecessors, (193), 0 states have call successors, (0), 0 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 12:18:00,193 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 46.0) internal successors, (506), 11 states have internal predecessors, (506), 0 states have call successors, (0), 0 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 12:18:00,193 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 46.0) internal successors, (506), 11 states have internal predecessors, (506), 0 states have call successors, (0), 0 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 12:18:00,194 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 118 flow. Second operand 10 states and 193 transitions. [2023-11-17 12:18:00,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 136 transitions, 715 flow [2023-11-17 12:18:00,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 136 transitions, 711 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 12:18:00,197 INFO L231 Difference]: Finished difference. Result has 49 places, 52 transitions, 279 flow [2023-11-17 12:18:00,197 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=279, PETRI_PLACES=49, PETRI_TRANSITIONS=52} [2023-11-17 12:18:00,198 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 17 predicate places. [2023-11-17 12:18:00,198 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 52 transitions, 279 flow [2023-11-17 12:18:00,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 12:18:00,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:18:00,199 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 12:18:00,222 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 12:18:00,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:18:00,404 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 12:18:00,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:18:00,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1804562669, now seen corresponding path program 2 times [2023-11-17 12:18:00,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:18:00,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901605661] [2023-11-17 12:18:00,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:18:00,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:18:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:18:00,482 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 12:18:00,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:18:00,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901605661] [2023-11-17 12:18:00,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901605661] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:18:00,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701036215] [2023-11-17 12:18:00,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 12:18:00,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:18:00,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:18:00,484 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 12:18:00,486 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 12:18:00,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 12:18:00,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:18:00,679 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 12:18:00,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:18:00,734 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 12:18:00,734 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:18:00,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:18:00,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701036215] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 12:18:00,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 12:18:00,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2023-11-17 12:18:00,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774999742] [2023-11-17 12:18:00,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:18:00,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 12:18:00,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:18:00,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 12:18:00,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-11-17 12:18:00,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 46 [2023-11-17 12:18:00,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 52 transitions, 279 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 12:18:00,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:18:00,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 46 [2023-11-17 12:18:00,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:18:01,184 INFO L124 PetriNetUnfolderBase]: 1862/2762 cut-off events. [2023-11-17 12:18:01,184 INFO L125 PetriNetUnfolderBase]: For 3555/3555 co-relation queries the response was YES. [2023-11-17 12:18:01,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9021 conditions, 2762 events. 1862/2762 cut-off events. For 3555/3555 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 12397 event pairs, 522 based on Foata normal form. 14/2775 useless extension candidates. Maximal degree in co-relation 6237. Up to 609 conditions per place. [2023-11-17 12:18:01,198 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 121 selfloop transitions, 49 changer transitions 0/170 dead transitions. [2023-11-17 12:18:01,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 170 transitions, 1125 flow [2023-11-17 12:18:01,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 12:18:01,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 12:18:01,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 217 transitions. [2023-11-17 12:18:01,199 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39311594202898553 [2023-11-17 12:18:01,199 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 217 transitions. [2023-11-17 12:18:01,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 217 transitions. [2023-11-17 12:18:01,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:18:01,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 217 transitions. [2023-11-17 12:18:01,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 18.083333333333332) internal successors, (217), 12 states have internal predecessors, (217), 0 states have call successors, (0), 0 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 12:18:01,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 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 12:18:01,201 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 46.0) internal successors, (598), 13 states have internal predecessors, (598), 0 states have call successors, (0), 0 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 12:18:01,201 INFO L175 Difference]: Start difference. First operand has 49 places, 52 transitions, 279 flow. Second operand 12 states and 217 transitions. [2023-11-17 12:18:01,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 170 transitions, 1125 flow [2023-11-17 12:18:01,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 170 transitions, 1122 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:18:01,214 INFO L231 Difference]: Finished difference. Result has 65 places, 82 transitions, 641 flow [2023-11-17 12:18:01,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=641, PETRI_PLACES=65, PETRI_TRANSITIONS=82} [2023-11-17 12:18:01,214 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 33 predicate places. [2023-11-17 12:18:01,214 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 82 transitions, 641 flow [2023-11-17 12:18:01,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 12:18:01,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:18:01,215 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 12:18:01,233 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 12:18:01,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-17 12:18:01,421 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 12:18:01,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:18:01,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1136189617, now seen corresponding path program 1 times [2023-11-17 12:18:01,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:18:01,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959350069] [2023-11-17 12:18:01,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:18:01,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:18:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:18:01,523 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 12:18:01,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:18:01,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959350069] [2023-11-17 12:18:01,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959350069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:18:01,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:18:01,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:18:01,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135506531] [2023-11-17 12:18:01,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:18:01,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:18:01,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:18:01,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:18:01,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:18:01,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 46 [2023-11-17 12:18:01,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 82 transitions, 641 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 12:18:01,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:18:01,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 46 [2023-11-17 12:18:01,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:18:01,757 INFO L124 PetriNetUnfolderBase]: 1588/2382 cut-off events. [2023-11-17 12:18:01,757 INFO L125 PetriNetUnfolderBase]: For 7078/7078 co-relation queries the response was YES. [2023-11-17 12:18:01,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9694 conditions, 2382 events. 1588/2382 cut-off events. For 7078/7078 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10318 event pairs, 952 based on Foata normal form. 62/2443 useless extension candidates. Maximal degree in co-relation 7683. Up to 1828 conditions per place. [2023-11-17 12:18:01,771 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 94 selfloop transitions, 5 changer transitions 0/99 dead transitions. [2023-11-17 12:18:01,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 99 transitions, 877 flow [2023-11-17 12:18:01,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:18:01,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:18:01,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 95 transitions. [2023-11-17 12:18:01,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41304347826086957 [2023-11-17 12:18:01,772 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 95 transitions. [2023-11-17 12:18:01,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 95 transitions. [2023-11-17 12:18:01,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:18:01,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 95 transitions. [2023-11-17 12:18:01,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 19.0) internal successors, (95), 5 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 12:18:01,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 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 12:18:01,773 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 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 12:18:01,773 INFO L175 Difference]: Start difference. First operand has 65 places, 82 transitions, 641 flow. Second operand 5 states and 95 transitions. [2023-11-17 12:18:01,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 99 transitions, 877 flow [2023-11-17 12:18:01,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 99 transitions, 852 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-17 12:18:01,792 INFO L231 Difference]: Finished difference. Result has 65 places, 74 transitions, 572 flow [2023-11-17 12:18:01,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=572, PETRI_PLACES=65, PETRI_TRANSITIONS=74} [2023-11-17 12:18:01,794 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 33 predicate places. [2023-11-17 12:18:01,794 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 74 transitions, 572 flow [2023-11-17 12:18:01,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 12:18:01,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:18:01,794 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 12:18:01,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 12:18:01,794 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 12:18:01,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:18:01,795 INFO L85 PathProgramCache]: Analyzing trace with hash -1631555838, now seen corresponding path program 1 times [2023-11-17 12:18:01,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:18:01,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250240055] [2023-11-17 12:18:01,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:18:01,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:18:01,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:18:01,864 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 12:18:01,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:18:01,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250240055] [2023-11-17 12:18:01,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250240055] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:18:01,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:18:01,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 12:18:01,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743211736] [2023-11-17 12:18:01,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:18:01,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:18:01,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:18:01,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:18:01,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:18:01,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 46 [2023-11-17 12:18:01,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 74 transitions, 572 flow. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 12:18:01,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:18:01,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 46 [2023-11-17 12:18:01,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:18:02,078 INFO L124 PetriNetUnfolderBase]: 1382/2070 cut-off events. [2023-11-17 12:18:02,079 INFO L125 PetriNetUnfolderBase]: For 6584/6584 co-relation queries the response was YES. [2023-11-17 12:18:02,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8571 conditions, 2070 events. 1382/2070 cut-off events. For 6584/6584 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8609 event pairs, 848 based on Foata normal form. 26/2095 useless extension candidates. Maximal degree in co-relation 7569. Up to 1828 conditions per place. [2023-11-17 12:18:02,091 INFO L140 encePairwiseOnDemand]: 40/46 looper letters, 63 selfloop transitions, 2 changer transitions 27/92 dead transitions. [2023-11-17 12:18:02,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 92 transitions, 818 flow [2023-11-17 12:18:02,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:18:02,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:18:02,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 90 transitions. [2023-11-17 12:18:02,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391304347826087 [2023-11-17 12:18:02,092 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 90 transitions. [2023-11-17 12:18:02,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 90 transitions. [2023-11-17 12:18:02,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:18:02,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 90 transitions. [2023-11-17 12:18:02,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 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 12:18:02,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 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 12:18:02,093 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 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 12:18:02,093 INFO L175 Difference]: Start difference. First operand has 65 places, 74 transitions, 572 flow. Second operand 5 states and 90 transitions. [2023-11-17 12:18:02,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 92 transitions, 818 flow [2023-11-17 12:18:02,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 92 transitions, 767 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-11-17 12:18:02,108 INFO L231 Difference]: Finished difference. Result has 64 places, 65 transitions, 484 flow [2023-11-17 12:18:02,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=515, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=484, PETRI_PLACES=64, PETRI_TRANSITIONS=65} [2023-11-17 12:18:02,110 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 32 predicate places. [2023-11-17 12:18:02,110 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 65 transitions, 484 flow [2023-11-17 12:18:02,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 0 states have call successors, (0), 0 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 12:18:02,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:18:02,110 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 12:18:02,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 12:18:02,110 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 12:18:02,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:18:02,111 INFO L85 PathProgramCache]: Analyzing trace with hash 375705613, now seen corresponding path program 3 times [2023-11-17 12:18:02,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:18:02,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077969061] [2023-11-17 12:18:02,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:18:02,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:18:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:18:02,191 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 12:18:02,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:18:02,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077969061] [2023-11-17 12:18:02,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077969061] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:18:02,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789204069] [2023-11-17 12:18:02,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 12:18:02,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:18:02,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:18:02,193 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 12:18:02,218 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 12:18:02,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 12:18:02,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:18:02,278 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 12:18:02,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:18:02,331 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 12:18:02,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:18:02,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:18:02,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789204069] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 12:18:02,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 12:18:02,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2023-11-17 12:18:02,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954994929] [2023-11-17 12:18:02,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:18:02,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 12:18:02,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:18:02,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 12:18:02,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-11-17 12:18:02,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 46 [2023-11-17 12:18:02,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 65 transitions, 484 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 12:18:02,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:18:02,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 46 [2023-11-17 12:18:02,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:18:02,686 INFO L124 PetriNetUnfolderBase]: 1532/2253 cut-off events. [2023-11-17 12:18:02,687 INFO L125 PetriNetUnfolderBase]: For 5269/5269 co-relation queries the response was YES. [2023-11-17 12:18:02,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9173 conditions, 2253 events. 1532/2253 cut-off events. For 5269/5269 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 9639 event pairs, 384 based on Foata normal form. 18/2270 useless extension candidates. Maximal degree in co-relation 9144. Up to 1000 conditions per place. [2023-11-17 12:18:02,713 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 85 selfloop transitions, 55 changer transitions 0/140 dead transitions. [2023-11-17 12:18:02,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 140 transitions, 1166 flow [2023-11-17 12:18:02,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 12:18:02,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 12:18:02,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2023-11-17 12:18:02,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37681159420289856 [2023-11-17 12:18:02,714 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 156 transitions. [2023-11-17 12:18:02,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 156 transitions. [2023-11-17 12:18:02,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:18:02,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 156 transitions. [2023-11-17 12:18:02,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 17.333333333333332) internal successors, (156), 9 states have internal predecessors, (156), 0 states have call successors, (0), 0 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 12:18:02,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 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 12:18:02,716 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 46.0) internal successors, (460), 10 states have internal predecessors, (460), 0 states have call successors, (0), 0 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 12:18:02,716 INFO L175 Difference]: Start difference. First operand has 64 places, 65 transitions, 484 flow. Second operand 9 states and 156 transitions. [2023-11-17 12:18:02,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 140 transitions, 1166 flow [2023-11-17 12:18:02,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 140 transitions, 1104 flow, removed 29 selfloop flow, removed 6 redundant places. [2023-11-17 12:18:02,746 INFO L231 Difference]: Finished difference. Result has 65 places, 86 transitions, 860 flow [2023-11-17 12:18:02,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=860, PETRI_PLACES=65, PETRI_TRANSITIONS=86} [2023-11-17 12:18:02,746 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 33 predicate places. [2023-11-17 12:18:02,747 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 86 transitions, 860 flow [2023-11-17 12:18:02,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 12:18:02,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:18:02,747 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 12:18:02,754 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 12:18:02,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:18:02,952 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 12:18:02,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:18:02,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1146153261, now seen corresponding path program 4 times [2023-11-17 12:18:02,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:18:02,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517225756] [2023-11-17 12:18:02,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:18:02,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:18:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:18:03,039 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 12:18:03,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:18:03,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517225756] [2023-11-17 12:18:03,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517225756] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:18:03,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1421554754] [2023-11-17 12:18:03,039 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 12:18:03,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:18:03,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:18:03,040 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 12:18:03,063 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 12:18:03,119 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 12:18:03,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:18:03,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 12:18:03,121 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:18:03,191 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 12:18:03,191 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:18:03,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:18:03,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1421554754] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 12:18:03,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 12:18:03,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2023-11-17 12:18:03,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571091783] [2023-11-17 12:18:03,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:18:03,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 12:18:03,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:18:03,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 12:18:03,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-17 12:18:03,238 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 46 [2023-11-17 12:18:03,239 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 86 transitions, 860 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 12:18:03,239 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:18:03,239 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 46 [2023-11-17 12:18:03,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:18:03,544 INFO L124 PetriNetUnfolderBase]: 1580/2329 cut-off events. [2023-11-17 12:18:03,544 INFO L125 PetriNetUnfolderBase]: For 8848/8848 co-relation queries the response was YES. [2023-11-17 12:18:03,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10872 conditions, 2329 events. 1580/2329 cut-off events. For 8848/8848 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 10161 event pairs, 304 based on Foata normal form. 18/2346 useless extension candidates. Maximal degree in co-relation 10836. Up to 785 conditions per place. [2023-11-17 12:18:03,554 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 86 selfloop transitions, 52 changer transitions 0/138 dead transitions. [2023-11-17 12:18:03,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 138 transitions, 1402 flow [2023-11-17 12:18:03,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 12:18:03,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 12:18:03,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 138 transitions. [2023-11-17 12:18:03,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2023-11-17 12:18:03,555 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 138 transitions. [2023-11-17 12:18:03,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 138 transitions. [2023-11-17 12:18:03,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:18:03,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 138 transitions. [2023-11-17 12:18:03,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 17.25) internal successors, (138), 8 states have internal predecessors, (138), 0 states have call successors, (0), 0 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 12:18:03,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 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 12:18:03,556 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 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 12:18:03,556 INFO L175 Difference]: Start difference. First operand has 65 places, 86 transitions, 860 flow. Second operand 8 states and 138 transitions. [2023-11-17 12:18:03,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 138 transitions, 1402 flow [2023-11-17 12:18:03,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 138 transitions, 1341 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-17 12:18:03,584 INFO L231 Difference]: Finished difference. Result has 71 places, 95 transitions, 1098 flow [2023-11-17 12:18:03,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=809, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1098, PETRI_PLACES=71, PETRI_TRANSITIONS=95} [2023-11-17 12:18:03,584 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 39 predicate places. [2023-11-17 12:18:03,584 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 95 transitions, 1098 flow [2023-11-17 12:18:03,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 12:18:03,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:18:03,585 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 12:18:03,590 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 12:18:03,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:18:03,790 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 12:18:03,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:18:03,790 INFO L85 PathProgramCache]: Analyzing trace with hash 527091147, now seen corresponding path program 5 times [2023-11-17 12:18:03,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:18:03,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739896135] [2023-11-17 12:18:03,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:18:03,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:18:03,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:18:03,884 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 12:18:03,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:18:03,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739896135] [2023-11-17 12:18:03,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739896135] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:18:03,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026488953] [2023-11-17 12:18:03,885 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 12:18:03,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:18:03,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:18:03,886 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 12:18:03,888 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 12:18:03,965 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 12:18:03,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:18:03,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 12:18:03,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:18:04,014 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 12:18:04,014 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:18:04,058 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 12:18:04,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026488953] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:18:04,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:18:04,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2023-11-17 12:18:04,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902050761] [2023-11-17 12:18:04,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:18:04,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 12:18:04,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:18:04,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 12:18:04,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-17 12:18:04,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 46 [2023-11-17 12:18:04,060 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 95 transitions, 1098 flow. Second operand has 14 states, 14 states have (on average 10.428571428571429) internal successors, (146), 14 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 12:18:04,060 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:18:04,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 46 [2023-11-17 12:18:04,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:18:04,726 INFO L124 PetriNetUnfolderBase]: 1846/2686 cut-off events. [2023-11-17 12:18:04,726 INFO L125 PetriNetUnfolderBase]: For 13700/13700 co-relation queries the response was YES. [2023-11-17 12:18:04,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13967 conditions, 2686 events. 1846/2686 cut-off events. For 13700/13700 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 11943 event pairs, 250 based on Foata normal form. 14/2699 useless extension candidates. Maximal degree in co-relation 13927. Up to 742 conditions per place. [2023-11-17 12:18:04,742 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 144 selfloop transitions, 172 changer transitions 0/316 dead transitions. [2023-11-17 12:18:04,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 316 transitions, 3840 flow [2023-11-17 12:18:04,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-17 12:18:04,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-17 12:18:04,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 329 transitions. [2023-11-17 12:18:04,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34057971014492755 [2023-11-17 12:18:04,744 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 329 transitions. [2023-11-17 12:18:04,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 329 transitions. [2023-11-17 12:18:04,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:18:04,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 329 transitions. [2023-11-17 12:18:04,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 15.666666666666666) internal successors, (329), 21 states have internal predecessors, (329), 0 states have call successors, (0), 0 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 12:18:04,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 46.0) internal successors, (1012), 22 states have internal predecessors, (1012), 0 states have call successors, (0), 0 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 12:18:04,746 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 46.0) internal successors, (1012), 22 states have internal predecessors, (1012), 0 states have call successors, (0), 0 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 12:18:04,746 INFO L175 Difference]: Start difference. First operand has 71 places, 95 transitions, 1098 flow. Second operand 21 states and 329 transitions. [2023-11-17 12:18:04,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 316 transitions, 3840 flow [2023-11-17 12:18:04,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 316 transitions, 3659 flow, removed 28 selfloop flow, removed 4 redundant places. [2023-11-17 12:18:04,802 INFO L231 Difference]: Finished difference. Result has 97 places, 218 transitions, 3115 flow [2023-11-17 12:18:04,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3115, PETRI_PLACES=97, PETRI_TRANSITIONS=218} [2023-11-17 12:18:04,802 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 65 predicate places. [2023-11-17 12:18:04,802 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 218 transitions, 3115 flow [2023-11-17 12:18:04,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.428571428571429) internal successors, (146), 14 states have internal predecessors, (146), 0 states have call successors, (0), 0 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 12:18:04,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:18:04,803 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 12:18:04,810 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 12:18:05,008 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 12:18:05,008 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 12:18:05,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:18:05,008 INFO L85 PathProgramCache]: Analyzing trace with hash 255324117, now seen corresponding path program 6 times [2023-11-17 12:18:05,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:18:05,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822689172] [2023-11-17 12:18:05,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:18:05,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:18:05,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:18:05,083 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 12:18:05,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:18:05,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822689172] [2023-11-17 12:18:05,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822689172] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:18:05,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454200737] [2023-11-17 12:18:05,084 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 12:18:05,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:18:05,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:18:05,085 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 12:18:05,104 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 12:18:05,191 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-17 12:18:05,191 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:18:05,192 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 12:18:05,193 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:18:05,240 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 12:18:05,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:18:05,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:18:05,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454200737] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 12:18:05,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 12:18:05,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 14 [2023-11-17 12:18:05,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838749841] [2023-11-17 12:18:05,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:18:05,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 12:18:05,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:18:05,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 12:18:05,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-11-17 12:18:05,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 46 [2023-11-17 12:18:05,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 218 transitions, 3115 flow. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 12:18:05,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:18:05,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 46 [2023-11-17 12:18:05,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:18:05,665 INFO L124 PetriNetUnfolderBase]: 1827/2646 cut-off events. [2023-11-17 12:18:05,665 INFO L125 PetriNetUnfolderBase]: For 18631/18631 co-relation queries the response was YES. [2023-11-17 12:18:05,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15760 conditions, 2646 events. 1827/2646 cut-off events. For 18631/18631 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 11521 event pairs, 214 based on Foata normal form. 14/2659 useless extension candidates. Maximal degree in co-relation 15710. Up to 731 conditions per place. [2023-11-17 12:18:05,679 INFO L140 encePairwiseOnDemand]: 36/46 looper letters, 120 selfloop transitions, 148 changer transitions 0/268 dead transitions. [2023-11-17 12:18:05,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 268 transitions, 3870 flow [2023-11-17 12:18:05,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 12:18:05,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 12:18:05,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 135 transitions. [2023-11-17 12:18:05,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36684782608695654 [2023-11-17 12:18:05,681 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 135 transitions. [2023-11-17 12:18:05,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 135 transitions. [2023-11-17 12:18:05,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:18:05,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 135 transitions. [2023-11-17 12:18:05,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 16.875) internal successors, (135), 8 states have internal predecessors, (135), 0 states have call successors, (0), 0 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 12:18:05,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 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 12:18:05,682 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 46.0) internal successors, (414), 9 states have internal predecessors, (414), 0 states have call successors, (0), 0 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 12:18:05,682 INFO L175 Difference]: Start difference. First operand has 97 places, 218 transitions, 3115 flow. Second operand 8 states and 135 transitions. [2023-11-17 12:18:05,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 268 transitions, 3870 flow [2023-11-17 12:18:05,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 268 transitions, 3795 flow, removed 36 selfloop flow, removed 2 redundant places. [2023-11-17 12:18:05,783 INFO L231 Difference]: Finished difference. Result has 105 places, 220 transitions, 3574 flow [2023-11-17 12:18:05,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3042, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3574, PETRI_PLACES=105, PETRI_TRANSITIONS=220} [2023-11-17 12:18:05,784 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 73 predicate places. [2023-11-17 12:18:05,784 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 220 transitions, 3574 flow [2023-11-17 12:18:05,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 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 12:18:05,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:18:05,784 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 12:18:05,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-17 12:18:05,989 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 12:18:05,990 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 12:18:05,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:18:05,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1925387867, now seen corresponding path program 1 times [2023-11-17 12:18:05,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:18:05,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679527026] [2023-11-17 12:18:05,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:18:05,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:18:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:18:06,050 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 12:18:06,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:18:06,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679527026] [2023-11-17 12:18:06,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679527026] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:18:06,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677355326] [2023-11-17 12:18:06,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:18:06,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:18:06,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:18:06,052 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 12:18:06,101 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 12:18:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:18:06,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 12:18:06,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:18:06,189 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 12:18:06,189 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:18:06,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:18:06,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677355326] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 12:18:06,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 12:18:06,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-11-17 12:18:06,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78068849] [2023-11-17 12:18:06,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:18:06,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:18:06,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:18:06,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:18:06,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-17 12:18:06,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 46 [2023-11-17 12:18:06,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 220 transitions, 3574 flow. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 12:18:06,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:18:06,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 46 [2023-11-17 12:18:06,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:18:06,486 INFO L124 PetriNetUnfolderBase]: 1758/2529 cut-off events. [2023-11-17 12:18:06,486 INFO L125 PetriNetUnfolderBase]: For 26409/26409 co-relation queries the response was YES. [2023-11-17 12:18:06,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16069 conditions, 2529 events. 1758/2529 cut-off events. For 26409/26409 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 10627 event pairs, 464 based on Foata normal form. 158/2686 useless extension candidates. Maximal degree in co-relation 16015. Up to 1985 conditions per place. [2023-11-17 12:18:06,561 INFO L140 encePairwiseOnDemand]: 41/46 looper letters, 291 selfloop transitions, 13 changer transitions 0/304 dead transitions. [2023-11-17 12:18:06,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 304 transitions, 5502 flow [2023-11-17 12:18:06,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:18:06,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:18:06,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2023-11-17 12:18:06,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3565217391304348 [2023-11-17 12:18:06,562 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 82 transitions. [2023-11-17 12:18:06,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 82 transitions. [2023-11-17 12:18:06,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:18:06,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 82 transitions. [2023-11-17 12:18:06,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 16.4) internal successors, (82), 5 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 12:18:06,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 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 12:18:06,563 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 46.0) internal successors, (276), 6 states have internal predecessors, (276), 0 states have call successors, (0), 0 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 12:18:06,563 INFO L175 Difference]: Start difference. First operand has 105 places, 220 transitions, 3574 flow. Second operand 5 states and 82 transitions. [2023-11-17 12:18:06,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 304 transitions, 5502 flow [2023-11-17 12:18:06,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 304 transitions, 5354 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-11-17 12:18:06,644 INFO L231 Difference]: Finished difference. Result has 106 places, 221 transitions, 3529 flow [2023-11-17 12:18:06,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3468, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3529, PETRI_PLACES=106, PETRI_TRANSITIONS=221} [2023-11-17 12:18:06,644 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 74 predicate places. [2023-11-17 12:18:06,644 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 221 transitions, 3529 flow [2023-11-17 12:18:06,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 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 12:18:06,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:18:06,645 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 12:18:06,652 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 12:18:06,853 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 12:18:06,853 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 12:18:06,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:18:06,854 INFO L85 PathProgramCache]: Analyzing trace with hash -620657494, now seen corresponding path program 1 times [2023-11-17 12:18:06,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:18:06,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697923263] [2023-11-17 12:18:06,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:18:06,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:18:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:18:07,479 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:18:07,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:18:07,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697923263] [2023-11-17 12:18:07,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697923263] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:18:07,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832729710] [2023-11-17 12:18:07,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:18:07,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:18:07,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:18:07,493 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 12:18:07,494 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 12:18:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:18:07,578 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 41 conjunts are in the unsatisfiable core [2023-11-17 12:18:07,582 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:18:07,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 12:18:07,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-17 12:18:07,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-11-17 12:18:07,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:18:07,938 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:18:08,091 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:18:08,091 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 54 treesize of output 38 [2023-11-17 12:18:08,095 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 17 treesize of output 11 [2023-11-17 12:18:08,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:18:08,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832729710] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:18:08,283 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:18:08,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 24 [2023-11-17 12:18:08,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917679289] [2023-11-17 12:18:08,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:18:08,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-17 12:18:08,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:18:08,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-17 12:18:08,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=555, Unknown=1, NotChecked=0, Total=650 [2023-11-17 12:18:08,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 46 [2023-11-17 12:18:08,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 221 transitions, 3529 flow. Second operand has 26 states, 26 states have (on average 6.0) internal successors, (156), 26 states have internal predecessors, (156), 0 states have call successors, (0), 0 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 12:18:08,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:18:08,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 46 [2023-11-17 12:18:08,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:18:09,621 INFO L124 PetriNetUnfolderBase]: 3557/5092 cut-off events. [2023-11-17 12:18:09,621 INFO L125 PetriNetUnfolderBase]: For 45368/45368 co-relation queries the response was YES. [2023-11-17 12:18:09,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33725 conditions, 5092 events. 3557/5092 cut-off events. For 45368/45368 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 23619 event pairs, 331 based on Foata normal form. 2/5092 useless extension candidates. Maximal degree in co-relation 30428. Up to 2777 conditions per place. [2023-11-17 12:18:09,662 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 586 selfloop transitions, 276 changer transitions 3/865 dead transitions. [2023-11-17 12:18:09,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 865 transitions, 14403 flow [2023-11-17 12:18:09,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 12:18:09,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 12:18:09,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 250 transitions. [2023-11-17 12:18:09,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36231884057971014 [2023-11-17 12:18:09,664 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 250 transitions. [2023-11-17 12:18:09,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 250 transitions. [2023-11-17 12:18:09,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:18:09,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 250 transitions. [2023-11-17 12:18:09,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 16.666666666666668) internal successors, (250), 15 states have internal predecessors, (250), 0 states have call successors, (0), 0 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 12:18:09,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 46.0) internal successors, (736), 16 states have internal predecessors, (736), 0 states have call successors, (0), 0 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 12:18:09,666 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 46.0) internal successors, (736), 16 states have internal predecessors, (736), 0 states have call successors, (0), 0 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 12:18:09,666 INFO L175 Difference]: Start difference. First operand has 106 places, 221 transitions, 3529 flow. Second operand 15 states and 250 transitions. [2023-11-17 12:18:09,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 865 transitions, 14403 flow [2023-11-17 12:18:10,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 865 transitions, 14367 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-17 12:18:10,027 INFO L231 Difference]: Finished difference. Result has 126 places, 459 transitions, 8880 flow [2023-11-17 12:18:10,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=3510, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=8880, PETRI_PLACES=126, PETRI_TRANSITIONS=459} [2023-11-17 12:18:10,028 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 94 predicate places. [2023-11-17 12:18:10,028 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 459 transitions, 8880 flow [2023-11-17 12:18:10,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.0) internal successors, (156), 26 states have internal predecessors, (156), 0 states have call successors, (0), 0 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 12:18:10,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:18:10,028 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 12:18:10,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-17 12:18:10,233 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 12:18:10,234 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 12:18:10,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:18:10,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1919002588, now seen corresponding path program 2 times [2023-11-17 12:18:10,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:18:10,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613590129] [2023-11-17 12:18:10,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:18:10,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:18:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:18:10,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:18:10,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:18:10,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613590129] [2023-11-17 12:18:10,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613590129] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:18:10,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438506041] [2023-11-17 12:18:10,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 12:18:10,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:18:10,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:18:10,836 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 12:18:10,850 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 12:18:10,972 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 12:18:10,972 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:18:10,973 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-17 12:18:10,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:18:11,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-11-17 12:18:11,188 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 12:18:11,189 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:18:11,219 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:18:11,220 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 23 treesize of output 16 [2023-11-17 12:18:11,338 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 12:18:11,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438506041] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:18:11,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:18:11,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 23 [2023-11-17 12:18:11,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293375574] [2023-11-17 12:18:11,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:18:11,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-17 12:18:11,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:18:11,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-17 12:18:11,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=507, Unknown=0, NotChecked=0, Total=600 [2023-11-17 12:18:11,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 46 [2023-11-17 12:18:11,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 459 transitions, 8880 flow. Second operand has 25 states, 25 states have (on average 6.4) internal successors, (160), 25 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 12:18:11,340 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:18:11,340 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 46 [2023-11-17 12:18:11,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:18:13,692 INFO L124 PetriNetUnfolderBase]: 5333/7620 cut-off events. [2023-11-17 12:18:13,692 INFO L125 PetriNetUnfolderBase]: For 96079/96079 co-relation queries the response was YES. [2023-11-17 12:18:13,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56514 conditions, 7620 events. 5333/7620 cut-off events. For 96079/96079 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 37927 event pairs, 432 based on Foata normal form. 2/7621 useless extension candidates. Maximal degree in co-relation 53637. Up to 4789 conditions per place. [2023-11-17 12:18:13,746 INFO L140 encePairwiseOnDemand]: 32/46 looper letters, 606 selfloop transitions, 595 changer transitions 2/1203 dead transitions. [2023-11-17 12:18:13,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 1203 transitions, 22370 flow [2023-11-17 12:18:13,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-17 12:18:13,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-11-17 12:18:13,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 447 transitions. [2023-11-17 12:18:13,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.255720823798627 [2023-11-17 12:18:13,753 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 447 transitions. [2023-11-17 12:18:13,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 447 transitions. [2023-11-17 12:18:13,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:18:13,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 447 transitions. [2023-11-17 12:18:13,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 11.763157894736842) internal successors, (447), 38 states have internal predecessors, (447), 0 states have call successors, (0), 0 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 12:18:13,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 46.0) internal successors, (1794), 39 states have internal predecessors, (1794), 0 states have call successors, (0), 0 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 12:18:13,777 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 46.0) internal successors, (1794), 39 states have internal predecessors, (1794), 0 states have call successors, (0), 0 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 12:18:13,777 INFO L175 Difference]: Start difference. First operand has 126 places, 459 transitions, 8880 flow. Second operand 38 states and 447 transitions. [2023-11-17 12:18:13,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 1203 transitions, 22370 flow [2023-11-17 12:18:14,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 1203 transitions, 21840 flow, removed 264 selfloop flow, removed 1 redundant places. [2023-11-17 12:18:14,526 INFO L231 Difference]: Finished difference. Result has 186 places, 956 transitions, 20102 flow [2023-11-17 12:18:14,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=8606, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=20102, PETRI_PLACES=186, PETRI_TRANSITIONS=956} [2023-11-17 12:18:14,527 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 154 predicate places. [2023-11-17 12:18:14,527 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 956 transitions, 20102 flow [2023-11-17 12:18:14,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.4) internal successors, (160), 25 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 12:18:14,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:18:14,528 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 12:18:14,533 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 12:18:14,733 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 12:18:14,733 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 12:18:14,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:18:14,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1242676423, now seen corresponding path program 1 times [2023-11-17 12:18:14,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:18:14,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987894340] [2023-11-17 12:18:14,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:18:14,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:18:14,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:18:15,212 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:18:15,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:18:15,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987894340] [2023-11-17 12:18:15,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987894340] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:18:15,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1645650561] [2023-11-17 12:18:15,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:18:15,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:18:15,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:18:15,214 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 12:18:15,219 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 12:18:15,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:18:15,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-17 12:18:15,309 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:18:15,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 12:18:15,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 12:18:15,316 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 10 treesize of output 8 [2023-11-17 12:18:15,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 12:18:15,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 12:18:15,444 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 12:18:15,471 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 12:18:15,494 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-11-17 12:18:15,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:18:15,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:18:15,575 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_385 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_385) c_~A~0.base))) (= (+ c_~res1~0 (select .cse0 (+ c_~A~0.offset (* |c_thread1Thread1of1ForFork2_~i~0#1| 4)))) (+ c_~res2~0 (select .cse0 c_~A~0.offset))))) is different from false [2023-11-17 12:18:15,583 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_384 (Array Int Int)) (v_ArrVal_385 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_384) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_385) c_~A~0.base))) (= (+ (select .cse0 (+ c_~A~0.offset (* |c_thread1Thread1of1ForFork2_~i~0#1| 4))) c_~res1~0) (+ c_~res2~0 (select .cse0 c_~A~0.offset))))) is different from false [2023-11-17 12:18:15,589 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 12:18:15,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1645650561] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:18:15,589 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:18:15,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 7] total 21 [2023-11-17 12:18:15,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289016192] [2023-11-17 12:18:15,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:18:15,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-17 12:18:15,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:18:15,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-17 12:18:15,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=344, Unknown=2, NotChecked=78, Total=506 [2023-11-17 12:18:15,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 46 [2023-11-17 12:18:15,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 956 transitions, 20102 flow. Second operand has 23 states, 23 states have (on average 7.043478260869565) internal successors, (162), 23 states have internal predecessors, (162), 0 states have call successors, (0), 0 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 12:18:15,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:18:15,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 46 [2023-11-17 12:18:15,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:18:18,541 INFO L124 PetriNetUnfolderBase]: 8243/11724 cut-off events. [2023-11-17 12:18:18,541 INFO L125 PetriNetUnfolderBase]: For 185970/185970 co-relation queries the response was YES. [2023-11-17 12:18:18,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97360 conditions, 11724 events. 8243/11724 cut-off events. For 185970/185970 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 62601 event pairs, 779 based on Foata normal form. 2/11726 useless extension candidates. Maximal degree in co-relation 96689. Up to 6899 conditions per place. [2023-11-17 12:18:18,636 INFO L140 encePairwiseOnDemand]: 33/46 looper letters, 1000 selfloop transitions, 666 changer transitions 1/1667 dead transitions. [2023-11-17 12:18:18,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 1667 transitions, 37099 flow [2023-11-17 12:18:18,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 12:18:18,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 12:18:18,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 214 transitions. [2023-11-17 12:18:18,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35785953177257523 [2023-11-17 12:18:18,638 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 214 transitions. [2023-11-17 12:18:18,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 214 transitions. [2023-11-17 12:18:18,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:18:18,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 214 transitions. [2023-11-17 12:18:18,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 16.46153846153846) internal successors, (214), 13 states have internal predecessors, (214), 0 states have call successors, (0), 0 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 12:18:18,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 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 12:18:18,640 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 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 12:18:18,640 INFO L175 Difference]: Start difference. First operand has 186 places, 956 transitions, 20102 flow. Second operand 13 states and 214 transitions. [2023-11-17 12:18:18,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 1667 transitions, 37099 flow [2023-11-17 12:18:21,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 1667 transitions, 35943 flow, removed 518 selfloop flow, removed 3 redundant places. [2023-11-17 12:18:21,381 INFO L231 Difference]: Finished difference. Result has 203 places, 1348 transitions, 30289 flow [2023-11-17 12:18:21,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=19335, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=956, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=346, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=30289, PETRI_PLACES=203, PETRI_TRANSITIONS=1348} [2023-11-17 12:18:21,382 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 171 predicate places. [2023-11-17 12:18:21,382 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 1348 transitions, 30289 flow [2023-11-17 12:18:21,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.043478260869565) internal successors, (162), 23 states have internal predecessors, (162), 0 states have call successors, (0), 0 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 12:18:21,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:18:21,383 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 12:18:21,390 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 12:18:21,587 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 12:18:21,588 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 12:18:21,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:18:21,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1763494605, now seen corresponding path program 2 times [2023-11-17 12:18:21,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:18:21,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058727884] [2023-11-17 12:18:21,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:18:21,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:18:21,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:18:22,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:18:22,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:18:22,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058727884] [2023-11-17 12:18:22,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058727884] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:18:22,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932810069] [2023-11-17 12:18:22,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 12:18:22,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:18:22,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:18:22,004 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 12:18:22,035 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 12:18:22,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 12:18:22,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:18:22,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-17 12:18:22,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:18:22,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 12:18:22,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-17 12:18:22,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-11-17 12:18:22,344 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 12:18:22,345 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:18:22,413 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:18:22,413 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 46 treesize of output 34 [2023-11-17 12:18:22,416 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 13 treesize of output 11 [2023-11-17 12:18:22,470 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 12:18:22,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932810069] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:18:22,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:18:22,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 21 [2023-11-17 12:18:22,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336828489] [2023-11-17 12:18:22,471 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:18:22,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-17 12:18:22,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:18:22,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-17 12:18:22,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=418, Unknown=4, NotChecked=0, Total=506 [2023-11-17 12:18:22,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 46 [2023-11-17 12:18:22,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 1348 transitions, 30289 flow. Second operand has 23 states, 23 states have (on average 7.217391304347826) internal successors, (166), 23 states have internal predecessors, (166), 0 states have call successors, (0), 0 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 12:18:22,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:18:22,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 46 [2023-11-17 12:18:22,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:18:26,861 INFO L124 PetriNetUnfolderBase]: 10031/14264 cut-off events. [2023-11-17 12:18:26,861 INFO L125 PetriNetUnfolderBase]: For 249541/249541 co-relation queries the response was YES. [2023-11-17 12:18:26,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125102 conditions, 14264 events. 10031/14264 cut-off events. For 249541/249541 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 78124 event pairs, 798 based on Foata normal form. 2/14266 useless extension candidates. Maximal degree in co-relation 124198. Up to 7000 conditions per place. [2023-11-17 12:18:26,988 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 918 selfloop transitions, 972 changer transitions 2/1892 dead transitions. [2023-11-17 12:18:26,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 1892 transitions, 44209 flow [2023-11-17 12:18:26,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 12:18:26,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 12:18:26,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 245 transitions. [2023-11-17 12:18:26,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35507246376811596 [2023-11-17 12:18:26,989 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 245 transitions. [2023-11-17 12:18:26,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 245 transitions. [2023-11-17 12:18:26,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:18:26,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 245 transitions. [2023-11-17 12:18:26,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 16.333333333333332) internal successors, (245), 15 states have internal predecessors, (245), 0 states have call successors, (0), 0 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 12:18:26,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 46.0) internal successors, (736), 16 states have internal predecessors, (736), 0 states have call successors, (0), 0 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 12:18:26,991 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 46.0) internal successors, (736), 16 states have internal predecessors, (736), 0 states have call successors, (0), 0 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 12:18:26,991 INFO L175 Difference]: Start difference. First operand has 203 places, 1348 transitions, 30289 flow. Second operand 15 states and 245 transitions. [2023-11-17 12:18:26,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 1892 transitions, 44209 flow [2023-11-17 12:18:30,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 1892 transitions, 43874 flow, removed 165 selfloop flow, removed 2 redundant places. [2023-11-17 12:18:30,724 INFO L231 Difference]: Finished difference. Result has 223 places, 1604 transitions, 39142 flow [2023-11-17 12:18:30,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=30020, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=759, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=496, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=39142, PETRI_PLACES=223, PETRI_TRANSITIONS=1604} [2023-11-17 12:18:30,725 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 191 predicate places. [2023-11-17 12:18:30,725 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 1604 transitions, 39142 flow [2023-11-17 12:18:30,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 7.217391304347826) internal successors, (166), 23 states have internal predecessors, (166), 0 states have call successors, (0), 0 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 12:18:30,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:18:30,725 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 12:18:30,731 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 12:18:30,930 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 12:18:30,930 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 12:18:30,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:18:30,931 INFO L85 PathProgramCache]: Analyzing trace with hash -329756918, now seen corresponding path program 3 times [2023-11-17 12:18:30,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:18:30,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899667830] [2023-11-17 12:18:30,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:18:30,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:18:30,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:18:31,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:18:31,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:18:31,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899667830] [2023-11-17 12:18:31,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899667830] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:18:31,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374114670] [2023-11-17 12:18:31,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 12:18:31,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:18:31,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:18:31,422 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 12:18:31,448 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 12:18:31,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 12:18:31,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:18:31,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-17 12:18:31,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:18:31,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-11-17 12:18:31,723 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 12:18:31,724 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:18:31,752 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:18:31,752 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 23 treesize of output 16 [2023-11-17 12:18:31,902 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 12:18:31,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374114670] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:18:31,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:18:31,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 23 [2023-11-17 12:18:31,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564601756] [2023-11-17 12:18:31,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:18:31,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-17 12:18:31,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:18:31,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-17 12:18:31,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2023-11-17 12:18:31,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 46 [2023-11-17 12:18:31,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 1604 transitions, 39142 flow. Second operand has 25 states, 25 states have (on average 6.4) internal successors, (160), 25 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 12:18:31,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:18:31,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 46 [2023-11-17 12:18:31,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:18:39,332 INFO L124 PetriNetUnfolderBase]: 13590/19484 cut-off events. [2023-11-17 12:18:39,333 INFO L125 PetriNetUnfolderBase]: For 455170/455170 co-relation queries the response was YES. [2023-11-17 12:18:39,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185318 conditions, 19484 events. 13590/19484 cut-off events. For 455170/455170 co-relation queries the response was YES. Maximal size of possible extension queue 848. Compared 114959 event pairs, 1273 based on Foata normal form. 2/19486 useless extension candidates. Maximal degree in co-relation 184451. Up to 13574 conditions per place. [2023-11-17 12:18:39,542 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 1344 selfloop transitions, 1391 changer transitions 2/2737 dead transitions. [2023-11-17 12:18:39,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 2737 transitions, 68101 flow [2023-11-17 12:18:39,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-17 12:18:39,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-11-17 12:18:39,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 564 transitions. [2023-11-17 12:18:39,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27246376811594203 [2023-11-17 12:18:39,544 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 564 transitions. [2023-11-17 12:18:39,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 564 transitions. [2023-11-17 12:18:39,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:18:39,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 564 transitions. [2023-11-17 12:18:39,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 12.533333333333333) internal successors, (564), 45 states have internal predecessors, (564), 0 states have call successors, (0), 0 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 12:18:39,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 46.0) internal successors, (2116), 46 states have internal predecessors, (2116), 0 states have call successors, (0), 0 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 12:18:39,547 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 46.0) internal successors, (2116), 46 states have internal predecessors, (2116), 0 states have call successors, (0), 0 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 12:18:39,547 INFO L175 Difference]: Start difference. First operand has 223 places, 1604 transitions, 39142 flow. Second operand 45 states and 564 transitions. [2023-11-17 12:18:39,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 2737 transitions, 68101 flow [2023-11-17 12:18:46,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 2737 transitions, 67641 flow, removed 131 selfloop flow, removed 3 redundant places. [2023-11-17 12:18:46,549 INFO L231 Difference]: Finished difference. Result has 283 places, 2406 transitions, 63083 flow [2023-11-17 12:18:46,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=38790, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=675, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=662, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=63083, PETRI_PLACES=283, PETRI_TRANSITIONS=2406} [2023-11-17 12:18:46,550 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 251 predicate places. [2023-11-17 12:18:46,550 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 2406 transitions, 63083 flow [2023-11-17 12:18:46,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.4) internal successors, (160), 25 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 12:18:46,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:18:46,551 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 12:18:46,556 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 12:18:46,755 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,SelfDestructingSolverStorable15 [2023-11-17 12:18:46,755 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 12:18:46,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:18:46,756 INFO L85 PathProgramCache]: Analyzing trace with hash 762604925, now seen corresponding path program 3 times [2023-11-17 12:18:46,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:18:46,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582006487] [2023-11-17 12:18:46,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:18:46,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:18:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:18:47,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:18:47,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:18:47,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582006487] [2023-11-17 12:18:47,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582006487] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:18:47,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937672817] [2023-11-17 12:18:47,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 12:18:47,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:18:47,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:18:47,152 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 12:18:47,153 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 12:18:47,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-17 12:18:47,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:18:47,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-17 12:18:47,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:18:47,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-11-17 12:18:47,335 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 12:18:47,335 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:18:47,363 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:18:47,363 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 23 treesize of output 16 [2023-11-17 12:18:47,400 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 12:18:47,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937672817] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:18:47,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:18:47,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 5] total 16 [2023-11-17 12:18:47,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602338656] [2023-11-17 12:18:47,400 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:18:47,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 12:18:47,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:18:47,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 12:18:47,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2023-11-17 12:18:47,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 46 [2023-11-17 12:18:47,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 2406 transitions, 63083 flow. Second operand has 18 states, 18 states have (on average 7.611111111111111) internal successors, (137), 18 states have internal predecessors, (137), 0 states have call successors, (0), 0 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 12:18:47,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:18:47,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 46 [2023-11-17 12:18:47,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:18:56,771 INFO L124 PetriNetUnfolderBase]: 15599/22289 cut-off events. [2023-11-17 12:18:56,771 INFO L125 PetriNetUnfolderBase]: For 584172/584172 co-relation queries the response was YES. [2023-11-17 12:18:56,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225656 conditions, 22289 events. 15599/22289 cut-off events. For 584172/584172 co-relation queries the response was YES. Maximal size of possible extension queue 993. Compared 133159 event pairs, 2053 based on Foata normal form. 2/22291 useless extension candidates. Maximal degree in co-relation 224705. Up to 19033 conditions per place. [2023-11-17 12:18:57,043 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 2392 selfloop transitions, 556 changer transitions 1/2949 dead transitions. [2023-11-17 12:18:57,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 2949 transitions, 80662 flow [2023-11-17 12:18:57,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 12:18:57,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 12:18:57,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 214 transitions. [2023-11-17 12:18:57,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33229813664596275 [2023-11-17 12:18:57,044 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 214 transitions. [2023-11-17 12:18:57,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 214 transitions. [2023-11-17 12:18:57,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:18:57,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 214 transitions. [2023-11-17 12:18:57,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 15.285714285714286) internal successors, (214), 14 states have internal predecessors, (214), 0 states have call successors, (0), 0 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 12:18:57,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 46.0) internal successors, (690), 15 states have internal predecessors, (690), 0 states have call successors, (0), 0 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 12:18:57,058 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 46.0) internal successors, (690), 15 states have internal predecessors, (690), 0 states have call successors, (0), 0 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 12:18:57,058 INFO L175 Difference]: Start difference. First operand has 283 places, 2406 transitions, 63083 flow. Second operand 14 states and 214 transitions. [2023-11-17 12:18:57,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 2949 transitions, 80662 flow [2023-11-17 12:19:07,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 2949 transitions, 78444 flow, removed 802 selfloop flow, removed 10 redundant places. [2023-11-17 12:19:07,233 INFO L231 Difference]: Finished difference. Result has 292 places, 2676 transitions, 69777 flow [2023-11-17 12:19:07,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=61243, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=320, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1902, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=69777, PETRI_PLACES=292, PETRI_TRANSITIONS=2676} [2023-11-17 12:19:07,236 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 260 predicate places. [2023-11-17 12:19:07,236 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 2676 transitions, 69777 flow [2023-11-17 12:19:07,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.611111111111111) internal successors, (137), 18 states have internal predecessors, (137), 0 states have call successors, (0), 0 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 12:19:07,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:19:07,236 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 12:19:07,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-17 12:19:07,437 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,SelfDestructingSolverStorable16 [2023-11-17 12:19:07,437 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 12:19:07,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:19:07,437 INFO L85 PathProgramCache]: Analyzing trace with hash 355181143, now seen corresponding path program 4 times [2023-11-17 12:19:07,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:19:07,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543376017] [2023-11-17 12:19:07,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:19:07,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:19:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:19:07,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:19:07,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:19:07,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543376017] [2023-11-17 12:19:07,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543376017] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:19:07,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768175675] [2023-11-17 12:19:07,859 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 12:19:07,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:19:07,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:19:07,860 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 12:19:07,863 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 12:19:07,960 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 12:19:07,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:19:07,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 42 conjunts are in the unsatisfiable core [2023-11-17 12:19:07,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:19:07,997 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 12:19:08,032 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 12:19:08,057 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 12:19:08,085 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 12:19:08,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-11-17 12:19:08,141 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:19:08,141 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:19:08,213 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 12:19:08,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768175675] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:19:08,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:19:08,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 5] total 19 [2023-11-17 12:19:08,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36042008] [2023-11-17 12:19:08,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:19:08,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-17 12:19:08,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:19:08,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-17 12:19:08,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2023-11-17 12:19:08,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 46 [2023-11-17 12:19:08,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 2676 transitions, 69777 flow. Second operand has 21 states, 21 states have (on average 7.238095238095238) internal successors, (152), 21 states have internal predecessors, (152), 0 states have call successors, (0), 0 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 12:19:08,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:19:08,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 46 [2023-11-17 12:19:08,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:19:18,464 INFO L124 PetriNetUnfolderBase]: 16179/23153 cut-off events. [2023-11-17 12:19:18,464 INFO L125 PetriNetUnfolderBase]: For 608228/608228 co-relation queries the response was YES. [2023-11-17 12:19:18,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234716 conditions, 23153 events. 16179/23153 cut-off events. For 608228/608228 co-relation queries the response was YES. Maximal size of possible extension queue 1048. Compared 139512 event pairs, 2281 based on Foata normal form. 2/23155 useless extension candidates. Maximal degree in co-relation 233702. Up to 21314 conditions per place. [2023-11-17 12:19:18,736 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 2502 selfloop transitions, 376 changer transitions 1/2879 dead transitions. [2023-11-17 12:19:18,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 2879 transitions, 79385 flow [2023-11-17 12:19:18,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 12:19:18,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 12:19:18,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 189 transitions. [2023-11-17 12:19:18,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31605351170568563 [2023-11-17 12:19:18,738 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 189 transitions. [2023-11-17 12:19:18,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 189 transitions. [2023-11-17 12:19:18,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:19:18,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 189 transitions. [2023-11-17 12:19:18,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 14.538461538461538) internal successors, (189), 13 states have internal predecessors, (189), 0 states have call successors, (0), 0 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 12:19:18,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 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 12:19:18,739 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 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 12:19:18,739 INFO L175 Difference]: Start difference. First operand has 292 places, 2676 transitions, 69777 flow. Second operand 13 states and 189 transitions. [2023-11-17 12:19:18,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 2879 transitions, 79385 flow [2023-11-17 12:19:29,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 2879 transitions, 77222 flow, removed 283 selfloop flow, removed 6 redundant places. [2023-11-17 12:19:29,271 INFO L231 Difference]: Finished difference. Result has 300 places, 2741 transitions, 70255 flow [2023-11-17 12:19:29,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=67663, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2676, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=322, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=70255, PETRI_PLACES=300, PETRI_TRANSITIONS=2741} [2023-11-17 12:19:29,273 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 268 predicate places. [2023-11-17 12:19:29,273 INFO L495 AbstractCegarLoop]: Abstraction has has 300 places, 2741 transitions, 70255 flow [2023-11-17 12:19:29,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.238095238095238) internal successors, (152), 21 states have internal predecessors, (152), 0 states have call successors, (0), 0 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 12:19:29,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:19:29,273 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 12:19:29,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-17 12:19:29,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:19:29,477 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 12:19:29,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:19:29,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1649181064, now seen corresponding path program 4 times [2023-11-17 12:19:29,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:19:29,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655674779] [2023-11-17 12:19:29,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:19:29,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:19:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:19:29,889 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:19:29,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:19:29,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655674779] [2023-11-17 12:19:29,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655674779] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:19:29,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543206903] [2023-11-17 12:19:29,889 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 12:19:29,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:19:29,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:19:29,890 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 12:19:29,892 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 12:19:29,988 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 12:19:29,988 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:19:29,989 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-17 12:19:29,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:19:30,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-11-17 12:19:30,170 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 12:19:30,170 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:19:30,209 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:19:30,209 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 23 treesize of output 16 [2023-11-17 12:19:30,308 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 12:19:30,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543206903] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:19:30,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:19:30,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 8] total 24 [2023-11-17 12:19:30,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999327935] [2023-11-17 12:19:30,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:19:30,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-17 12:19:30,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:19:30,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-17 12:19:30,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2023-11-17 12:19:30,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 46 [2023-11-17 12:19:30,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 2741 transitions, 70255 flow. Second operand has 26 states, 26 states have (on average 6.153846153846154) internal successors, (160), 26 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 12:19:30,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:19:30,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 46 [2023-11-17 12:19:30,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:19:42,317 INFO L124 PetriNetUnfolderBase]: 16731/23963 cut-off events. [2023-11-17 12:19:42,317 INFO L125 PetriNetUnfolderBase]: For 598254/598254 co-relation queries the response was YES. [2023-11-17 12:19:42,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241386 conditions, 23963 events. 16731/23963 cut-off events. For 598254/598254 co-relation queries the response was YES. Maximal size of possible extension queue 1140. Compared 145647 event pairs, 1746 based on Foata normal form. 2/23965 useless extension candidates. Maximal degree in co-relation 240194. Up to 18614 conditions per place. [2023-11-17 12:19:42,632 INFO L140 encePairwiseOnDemand]: 31/46 looper letters, 1698 selfloop transitions, 1395 changer transitions 1/3094 dead transitions. [2023-11-17 12:19:42,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 3094 transitions, 82343 flow [2023-11-17 12:19:42,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-17 12:19:42,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-11-17 12:19:42,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 453 transitions. [2023-11-17 12:19:42,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24619565217391304 [2023-11-17 12:19:42,646 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 453 transitions. [2023-11-17 12:19:42,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 453 transitions. [2023-11-17 12:19:42,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:19:42,648 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 453 transitions. [2023-11-17 12:19:42,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 11.325) internal successors, (453), 40 states have internal predecessors, (453), 0 states have call successors, (0), 0 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 12:19:42,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 46.0) internal successors, (1886), 41 states have internal predecessors, (1886), 0 states have call successors, (0), 0 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 12:19:42,656 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 46.0) internal successors, (1886), 41 states have internal predecessors, (1886), 0 states have call successors, (0), 0 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 12:19:42,656 INFO L175 Difference]: Start difference. First operand has 300 places, 2741 transitions, 70255 flow. Second operand 40 states and 453 transitions. [2023-11-17 12:19:42,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 3094 transitions, 82343 flow [2023-11-17 12:19:53,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 3094 transitions, 81402 flow, removed 241 selfloop flow, removed 8 redundant places. [2023-11-17 12:19:53,644 INFO L231 Difference]: Finished difference. Result has 341 places, 2862 transitions, 76185 flow [2023-11-17 12:19:53,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=69444, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1284, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=76185, PETRI_PLACES=341, PETRI_TRANSITIONS=2862} [2023-11-17 12:19:53,647 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 309 predicate places. [2023-11-17 12:19:53,647 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 2862 transitions, 76185 flow [2023-11-17 12:19:53,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.153846153846154) internal successors, (160), 26 states have internal predecessors, (160), 0 states have call successors, (0), 0 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 12:19:53,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:19:53,647 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 12:19:53,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-17 12:19:53,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:19:53,852 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 12:19:53,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:19:53,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1234672260, now seen corresponding path program 5 times [2023-11-17 12:19:53,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:19:53,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546610020] [2023-11-17 12:19:53,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:19:53,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:19:53,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:19:54,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:19:54,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:19:54,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546610020] [2023-11-17 12:19:54,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546610020] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:19:54,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423810126] [2023-11-17 12:19:54,377 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 12:19:54,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:19:54,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:19:54,390 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 12:19:54,403 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 12:19:54,501 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-17 12:19:54,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:19:54,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-17 12:19:54,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:19:54,682 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:19:54,682 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 17 treesize of output 15 [2023-11-17 12:19:54,723 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 12:19:54,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:19:54,786 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:19:54,787 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 23 treesize of output 16 [2023-11-17 12:19:54,949 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 12:19:54,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423810126] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:19:54,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:19:54,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 23 [2023-11-17 12:19:54,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374567207] [2023-11-17 12:19:54,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:19:54,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-17 12:19:54,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:19:54,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-17 12:19:54,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=507, Unknown=0, NotChecked=0, Total=600 [2023-11-17 12:19:54,951 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 46 [2023-11-17 12:19:54,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 2862 transitions, 76185 flow. Second operand has 25 states, 25 states have (on average 6.32) internal successors, (158), 25 states have internal predecessors, (158), 0 states have call successors, (0), 0 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 12:19:54,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:19:54,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 46 [2023-11-17 12:19:54,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:20:10,303 INFO L124 PetriNetUnfolderBase]: 21389/30359 cut-off events. [2023-11-17 12:20:10,303 INFO L125 PetriNetUnfolderBase]: For 802157/802157 co-relation queries the response was YES. [2023-11-17 12:20:10,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317575 conditions, 30359 events. 21389/30359 cut-off events. For 802157/802157 co-relation queries the response was YES. Maximal size of possible extension queue 1380. Compared 185771 event pairs, 2512 based on Foata normal form. 2/30361 useless extension candidates. Maximal degree in co-relation 316458. Up to 23387 conditions per place. [2023-11-17 12:20:10,858 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 2962 selfloop transitions, 1294 changer transitions 2/4258 dead transitions. [2023-11-17 12:20:10,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 4258 transitions, 116739 flow [2023-11-17 12:20:10,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-17 12:20:10,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-11-17 12:20:10,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 437 transitions. [2023-11-17 12:20:10,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27941176470588236 [2023-11-17 12:20:10,859 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 437 transitions. [2023-11-17 12:20:10,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 437 transitions. [2023-11-17 12:20:10,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:20:10,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 437 transitions. [2023-11-17 12:20:10,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 12.852941176470589) internal successors, (437), 34 states have internal predecessors, (437), 0 states have call successors, (0), 0 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 12:20:10,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 46.0) internal successors, (1610), 35 states have internal predecessors, (1610), 0 states have call successors, (0), 0 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 12:20:10,874 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 46.0) internal successors, (1610), 35 states have internal predecessors, (1610), 0 states have call successors, (0), 0 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 12:20:10,874 INFO L175 Difference]: Start difference. First operand has 341 places, 2862 transitions, 76185 flow. Second operand 34 states and 437 transitions. [2023-11-17 12:20:10,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 4258 transitions, 116739 flow [2023-11-17 12:20:27,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 4258 transitions, 115577 flow, removed 374 selfloop flow, removed 20 redundant places. [2023-11-17 12:20:27,951 INFO L231 Difference]: Finished difference. Result has 369 places, 3743 transitions, 100455 flow [2023-11-17 12:20:27,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=75264, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2862, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=608, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2075, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=100455, PETRI_PLACES=369, PETRI_TRANSITIONS=3743} [2023-11-17 12:20:27,954 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 337 predicate places. [2023-11-17 12:20:27,954 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 3743 transitions, 100455 flow [2023-11-17 12:20:27,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.32) internal successors, (158), 25 states have internal predecessors, (158), 0 states have call successors, (0), 0 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 12:20:27,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:20:27,954 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] [2023-11-17 12:20:27,964 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 12:20:28,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:20:28,161 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 12:20:28,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:20:28,161 INFO L85 PathProgramCache]: Analyzing trace with hash 2100172139, now seen corresponding path program 5 times [2023-11-17 12:20:28,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:20:28,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51939271] [2023-11-17 12:20:28,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:20:28,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:20:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:20:28,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:20:28,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:20:28,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51939271] [2023-11-17 12:20:28,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51939271] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:20:28,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053550081] [2023-11-17 12:20:28,521 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 12:20:28,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:20:28,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:20:28,522 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:20:28,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-17 12:20:28,619 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 12:20:28,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:20:28,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-17 12:20:28,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:20:28,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-11-17 12:20:28,727 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 12:20:28,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:20:28,756 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:20:28,756 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 23 treesize of output 16 [2023-11-17 12:20:28,791 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 12:20:28,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053550081] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:20:28,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:20:28,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 5] total 19 [2023-11-17 12:20:28,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793730858] [2023-11-17 12:20:28,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:20:28,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-17 12:20:28,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:20:28,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-17 12:20:28,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2023-11-17 12:20:28,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 46 [2023-11-17 12:20:28,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 3743 transitions, 100455 flow. Second operand has 21 states, 21 states have (on average 7.428571428571429) internal successors, (156), 21 states have internal predecessors, (156), 0 states have call successors, (0), 0 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 12:20:28,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:20:28,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 46 [2023-11-17 12:20:28,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:20:50,540 INFO L124 PetriNetUnfolderBase]: 24174/34262 cut-off events. [2023-11-17 12:20:50,540 INFO L125 PetriNetUnfolderBase]: For 983285/983285 co-relation queries the response was YES. [2023-11-17 12:20:51,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 375461 conditions, 34262 events. 24174/34262 cut-off events. For 983285/983285 co-relation queries the response was YES. Maximal size of possible extension queue 1624. Compared 213794 event pairs, 2772 based on Foata normal form. 2/34264 useless extension candidates. Maximal degree in co-relation 374450. Up to 29612 conditions per place. [2023-11-17 12:20:51,679 INFO L140 encePairwiseOnDemand]: 34/46 looper letters, 3688 selfloop transitions, 844 changer transitions 2/4534 dead transitions. [2023-11-17 12:20:51,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 4534 transitions, 128769 flow [2023-11-17 12:20:51,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 12:20:51,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 12:20:51,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 207 transitions. [2023-11-17 12:20:51,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34615384615384615 [2023-11-17 12:20:51,681 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 207 transitions. [2023-11-17 12:20:51,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 207 transitions. [2023-11-17 12:20:51,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:20:51,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 207 transitions. [2023-11-17 12:20:51,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 15.923076923076923) internal successors, (207), 13 states have internal predecessors, (207), 0 states have call successors, (0), 0 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 12:20:51,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 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 12:20:51,695 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 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 12:20:51,695 INFO L175 Difference]: Start difference. First operand has 369 places, 3743 transitions, 100455 flow. Second operand 13 states and 207 transitions. [2023-11-17 12:20:51,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 4534 transitions, 128769 flow [2023-11-17 12:21:19,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 4534 transitions, 125234 flow, removed 1606 selfloop flow, removed 10 redundant places. [2023-11-17 12:21:19,744 INFO L231 Difference]: Finished difference. Result has 377 places, 4164 transitions, 113163 flow [2023-11-17 12:21:19,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=97506, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3743, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=446, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2926, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=113163, PETRI_PLACES=377, PETRI_TRANSITIONS=4164} [2023-11-17 12:21:19,746 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 345 predicate places. [2023-11-17 12:21:19,746 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 4164 transitions, 113163 flow [2023-11-17 12:21:19,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 7.428571428571429) internal successors, (156), 21 states have internal predecessors, (156), 0 states have call successors, (0), 0 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 12:21:19,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:21:19,747 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 12:21:19,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-17 12:21:19,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:21:19,948 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 12:21:19,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:21:19,948 INFO L85 PathProgramCache]: Analyzing trace with hash 191459831, now seen corresponding path program 6 times [2023-11-17 12:21:19,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:21:19,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182990908] [2023-11-17 12:21:19,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:21:19,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:21:19,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:21:20,356 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:21:20,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:21:20,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182990908] [2023-11-17 12:21:20,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182990908] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:21:20,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846763764] [2023-11-17 12:21:20,357 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 12:21:20,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:21:20,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:21:20,358 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:21:20,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-17 12:21:20,480 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-17 12:21:20,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:21:20,482 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-17 12:21:20,483 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:21:20,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 12:21:20,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-17 12:21:20,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-11-17 12:21:20,696 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 12:21:20,697 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:21:20,744 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_647 (Array Int Int))) (= (+ c_~res1~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_647) c_~A~0.base) (+ c_~A~0.offset (* |c_thread1Thread1of1ForFork2_~i~0#1| 4)))) c_~res2~0)) is different from false [2023-11-17 12:21:20,790 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:21:20,790 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 54 treesize of output 38 [2023-11-17 12:21:20,792 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 17 treesize of output 11 [2023-11-17 12:21:20,861 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 12:21:20,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846763764] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:21:20,861 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:21:20,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2023-11-17 12:21:20,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044314905] [2023-11-17 12:21:20,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:21:20,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-17 12:21:20,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:21:20,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-17 12:21:20,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=453, Unknown=2, NotChecked=44, Total=600 [2023-11-17 12:21:20,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 46 [2023-11-17 12:21:20,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 4164 transitions, 113163 flow. Second operand has 25 states, 25 states have (on average 7.04) internal successors, (176), 25 states have internal predecessors, (176), 0 states have call successors, (0), 0 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 12:21:20,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:21:20,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 46 [2023-11-17 12:21:20,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:21:45,585 INFO L124 PetriNetUnfolderBase]: 24658/34963 cut-off events. [2023-11-17 12:21:45,585 INFO L125 PetriNetUnfolderBase]: For 1022071/1022071 co-relation queries the response was YES. [2023-11-17 12:21:46,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383607 conditions, 34963 events. 24658/34963 cut-off events. For 1022071/1022071 co-relation queries the response was YES. Maximal size of possible extension queue 1660. Compared 219033 event pairs, 3004 based on Foata normal form. 1/34964 useless extension candidates. Maximal degree in co-relation 382685. Up to 32130 conditions per place. [2023-11-17 12:21:46,529 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 3873 selfloop transitions, 550 changer transitions 1/4424 dead transitions. [2023-11-17 12:21:46,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 4424 transitions, 127527 flow [2023-11-17 12:21:46,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 12:21:46,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 12:21:46,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 189 transitions. [2023-11-17 12:21:46,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31605351170568563 [2023-11-17 12:21:46,530 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 189 transitions. [2023-11-17 12:21:46,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 189 transitions. [2023-11-17 12:21:46,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:21:46,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 189 transitions. [2023-11-17 12:21:46,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 14.538461538461538) internal successors, (189), 13 states have internal predecessors, (189), 0 states have call successors, (0), 0 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 12:21:46,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 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 12:21:46,532 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 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 12:21:46,532 INFO L175 Difference]: Start difference. First operand has 377 places, 4164 transitions, 113163 flow. Second operand 13 states and 189 transitions. [2023-11-17 12:21:46,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 4424 transitions, 127527 flow [2023-11-17 12:22:12,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 384 places, 4424 transitions, 125671 flow, removed 746 selfloop flow, removed 5 redundant places. [2023-11-17 12:22:12,926 INFO L231 Difference]: Finished difference. Result has 388 places, 4223 transitions, 114714 flow [2023-11-17 12:22:12,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=111307, PETRI_DIFFERENCE_MINUEND_PLACES=372, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=501, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3628, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=114714, PETRI_PLACES=388, PETRI_TRANSITIONS=4223} [2023-11-17 12:22:12,930 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 356 predicate places. [2023-11-17 12:22:12,930 INFO L495 AbstractCegarLoop]: Abstraction has has 388 places, 4223 transitions, 114714 flow [2023-11-17 12:22:12,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.04) internal successors, (176), 25 states have internal predecessors, (176), 0 states have call successors, (0), 0 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 12:22:12,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:22:12,930 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 12:22:12,938 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-17 12:22:13,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:22:13,135 INFO L420 AbstractCegarLoop]: === Iteration 23 === 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 12:22:13,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:22:13,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1996652701, now seen corresponding path program 7 times [2023-11-17 12:22:13,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:22:13,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826871209] [2023-11-17 12:22:13,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:22:13,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:22:13,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:22:13,491 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:22:13,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:22:13,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826871209] [2023-11-17 12:22:13,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826871209] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:22:13,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242806485] [2023-11-17 12:22:13,492 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 12:22:13,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:22:13,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:22:13,495 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:22:13,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-17 12:22:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:22:13,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-17 12:22:13,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:22:13,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 12:22:13,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 12:22:13,625 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 10 treesize of output 8 [2023-11-17 12:22:13,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 12:22:13,683 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 12:22:13,710 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 12:22:13,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-17 12:22:13,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-11-17 12:22:13,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:22:13,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:22:13,837 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_686 (Array Int Int))) (= (+ c_~res2~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_686) c_~A~0.base) c_~A~0.offset)) (+ (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset (* |c_thread1Thread1of1ForFork2_~i~0#1| 4))) c_~res1~0))) is different from false [2023-11-17 12:22:13,840 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_686 (Array Int Int))) (= (+ (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset) c_~res1~0) (+ c_~res2~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_686) c_~A~0.base) c_~A~0.offset)))) is different from false [2023-11-17 12:22:13,872 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_685 (Array Int Int)) (v_ArrVal_684 (Array Int Int)) (v_ArrVal_686 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_684) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_685))) (= (+ c_~res2~0 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_686) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|)) (+ c_~res1~0 (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))))) is different from false [2023-11-17 12:22:13,877 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:22:13,877 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 54 treesize of output 43 [2023-11-17 12:22:13,880 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1278 treesize of output 1198 [2023-11-17 12:22:13,885 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 124 treesize of output 116 [2023-11-17 12:22:13,888 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 58 treesize of output 56 [2023-11-17 12:22:13,890 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 114 treesize of output 110 [2023-11-17 12:22:13,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-17 12:22:13,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242806485] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:22:13,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:22:13,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 22 [2023-11-17 12:22:13,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924454462] [2023-11-17 12:22:13,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:22:13,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-17 12:22:13,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:22:13,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-17 12:22:13,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=335, Unknown=16, NotChecked=120, Total=552 [2023-11-17 12:22:13,937 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 46 [2023-11-17 12:22:13,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 4223 transitions, 114714 flow. Second operand has 24 states, 24 states have (on average 6.833333333333333) internal successors, (164), 24 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 12:22:13,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:22:13,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 46 [2023-11-17 12:22:13,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:22:14,431 WARN L854 $PredicateComparison]: unable to prove that (and (forall ((v_ArrVal_685 (Array Int Int)) (v_ArrVal_686 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_685))) (= (+ c_~res1~0 (select (select .cse0 c_~A~0.base) c_~A~0.offset)) (+ (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_686) c_~A~0.base) c_~A~0.offset) c_~res2~0)))) (= c_~res2~0 c_~res1~0) (= |c_thread2Thread1of1ForFork0_~tmp~1#1| c_~res1~0)) is different from false [2023-11-17 12:22:41,244 INFO L124 PetriNetUnfolderBase]: 26850/38049 cut-off events. [2023-11-17 12:22:41,244 INFO L125 PetriNetUnfolderBase]: For 1123487/1123487 co-relation queries the response was YES. [2023-11-17 12:22:42,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417007 conditions, 38049 events. 26850/38049 cut-off events. For 1123487/1123487 co-relation queries the response was YES. Maximal size of possible extension queue 1812. Compared 240782 event pairs, 3104 based on Foata normal form. 2/38051 useless extension candidates. Maximal degree in co-relation 416046. Up to 31836 conditions per place. [2023-11-17 12:22:42,298 INFO L140 encePairwiseOnDemand]: 26/46 looper letters, 3834 selfloop transitions, 1069 changer transitions 2/4905 dead transitions. [2023-11-17 12:22:42,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 4905 transitions, 139756 flow [2023-11-17 12:22:42,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 12:22:42,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 12:22:42,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 223 transitions. [2023-11-17 12:22:42,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34627329192546585 [2023-11-17 12:22:42,299 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 223 transitions. [2023-11-17 12:22:42,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 223 transitions. [2023-11-17 12:22:42,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:22:42,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 223 transitions. [2023-11-17 12:22:42,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 15.928571428571429) internal successors, (223), 14 states have internal predecessors, (223), 0 states have call successors, (0), 0 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 12:22:42,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 46.0) internal successors, (690), 15 states have internal predecessors, (690), 0 states have call successors, (0), 0 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 12:22:42,301 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 46.0) internal successors, (690), 15 states have internal predecessors, (690), 0 states have call successors, (0), 0 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 12:22:42,301 INFO L175 Difference]: Start difference. First operand has 388 places, 4223 transitions, 114714 flow. Second operand 14 states and 223 transitions. [2023-11-17 12:22:42,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 4905 transitions, 139756 flow [2023-11-17 12:23:14,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 4905 transitions, 138934 flow, removed 224 selfloop flow, removed 6 redundant places. [2023-11-17 12:23:14,367 INFO L231 Difference]: Finished difference. Result has 402 places, 4540 transitions, 126547 flow [2023-11-17 12:23:14,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=113892, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=780, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=126547, PETRI_PLACES=402, PETRI_TRANSITIONS=4540} [2023-11-17 12:23:14,370 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 370 predicate places. [2023-11-17 12:23:14,371 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 4540 transitions, 126547 flow [2023-11-17 12:23:14,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.833333333333333) internal successors, (164), 24 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 12:23:14,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:23:14,371 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 12:23:14,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-17 12:23:14,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:23:14,576 INFO L420 AbstractCegarLoop]: === Iteration 24 === 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 12:23:14,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:23:14,577 INFO L85 PathProgramCache]: Analyzing trace with hash 700312779, now seen corresponding path program 8 times [2023-11-17 12:23:14,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:23:14,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209453026] [2023-11-17 12:23:14,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:23:14,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:23:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:23:14,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:23:14,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:23:14,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209453026] [2023-11-17 12:23:14,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209453026] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:23:14,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779277553] [2023-11-17 12:23:14,949 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 12:23:14,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:23:14,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:23:14,950 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:23:14,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-17 12:23:15,050 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 12:23:15,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:23:15,051 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 34 conjunts are in the unsatisfiable core [2023-11-17 12:23:15,052 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:23:15,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 12:23:15,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-17 12:23:15,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-11-17 12:23:15,204 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 12:23:15,204 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:23:15,279 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:23:15,279 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 54 treesize of output 38 [2023-11-17 12:23:15,282 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 17 treesize of output 11 [2023-11-17 12:23:15,353 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 12:23:15,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779277553] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:23:15,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:23:15,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 22 [2023-11-17 12:23:15,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084957198] [2023-11-17 12:23:15,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:23:15,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-17 12:23:15,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:23:15,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-17 12:23:15,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=448, Unknown=4, NotChecked=0, Total=552 [2023-11-17 12:23:15,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 46 [2023-11-17 12:23:15,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 4540 transitions, 126547 flow. Second operand has 24 states, 24 states have (on average 6.958333333333333) internal successors, (167), 24 states have internal predecessors, (167), 0 states have call successors, (0), 0 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 12:23:15,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:23:15,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 46 [2023-11-17 12:23:15,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:23:44,937 INFO L124 PetriNetUnfolderBase]: 27403/38870 cut-off events. [2023-11-17 12:23:44,937 INFO L125 PetriNetUnfolderBase]: For 1225471/1225471 co-relation queries the response was YES. [2023-11-17 12:23:45,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 445646 conditions, 38870 events. 27403/38870 cut-off events. For 1225471/1225471 co-relation queries the response was YES. Maximal size of possible extension queue 1854. Compared 247289 event pairs, 3060 based on Foata normal form. 1/38871 useless extension candidates. Maximal degree in co-relation 444667. Up to 31343 conditions per place. [2023-11-17 12:23:45,887 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 3738 selfloop transitions, 1264 changer transitions 3/5005 dead transitions. [2023-11-17 12:23:45,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 5005 transitions, 146030 flow [2023-11-17 12:23:45,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 12:23:45,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 12:23:45,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 237 transitions. [2023-11-17 12:23:45,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34347826086956523 [2023-11-17 12:23:45,893 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 237 transitions. [2023-11-17 12:23:45,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 237 transitions. [2023-11-17 12:23:45,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:23:45,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 237 transitions. [2023-11-17 12:23:45,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 15.8) internal successors, (237), 15 states have internal predecessors, (237), 0 states have call successors, (0), 0 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 12:23:45,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 46.0) internal successors, (736), 16 states have internal predecessors, (736), 0 states have call successors, (0), 0 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 12:23:45,894 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 46.0) internal successors, (736), 16 states have internal predecessors, (736), 0 states have call successors, (0), 0 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 12:23:45,894 INFO L175 Difference]: Start difference. First operand has 402 places, 4540 transitions, 126547 flow. Second operand 15 states and 237 transitions. [2023-11-17 12:23:45,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 5005 transitions, 146030 flow [2023-11-17 12:24:20,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 5005 transitions, 144494 flow, removed 586 selfloop flow, removed 5 redundant places. [2023-11-17 12:24:20,397 INFO L231 Difference]: Finished difference. Result has 414 places, 4633 transitions, 131543 flow [2023-11-17 12:24:20,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=125217, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=131543, PETRI_PLACES=414, PETRI_TRANSITIONS=4633} [2023-11-17 12:24:20,401 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 382 predicate places. [2023-11-17 12:24:20,401 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 4633 transitions, 131543 flow [2023-11-17 12:24:20,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.958333333333333) internal successors, (167), 24 states have internal predecessors, (167), 0 states have call successors, (0), 0 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 12:24:20,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:24:20,401 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 12:24:20,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-17 12:24:20,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-17 12:24:20,609 INFO L420 AbstractCegarLoop]: === Iteration 25 === 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 12:24:20,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:24:20,609 INFO L85 PathProgramCache]: Analyzing trace with hash -546535869, now seen corresponding path program 9 times [2023-11-17 12:24:20,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:24:20,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347762245] [2023-11-17 12:24:20,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:24:20,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:24:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:24:21,049 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:24:21,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:24:21,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347762245] [2023-11-17 12:24:21,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347762245] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:24:21,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134648722] [2023-11-17 12:24:21,050 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 12:24:21,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:24:21,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:24:21,051 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:24:21,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-17 12:24:21,174 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 12:24:21,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:24:21,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 45 conjunts are in the unsatisfiable core [2023-11-17 12:24:21,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:24:21,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 12:24:21,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 12:24:21,185 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 10 treesize of output 8 [2023-11-17 12:24:21,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 12:24:21,242 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 12:24:21,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 12:24:21,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-17 12:24:21,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-17 12:24:21,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-11-17 12:24:21,381 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:24:21,381 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:24:21,496 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_757 (Array Int Int)) (v_ArrVal_758 (Array Int Int))) (= (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_757) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_758) c_~A~0.base) c_~A~0.offset) c_~res2~0) (+ (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset) c_~res1~0))) is different from false [2023-11-17 12:24:21,503 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_757 (Array Int Int)) (v_ArrVal_756 (Array Int Int)) (v_ArrVal_758 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_756))) (= (+ (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) c_~res1~0) (+ (select (select (store (store .cse0 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_757) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_758) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) c_~res2~0)))) is different from false [2023-11-17 12:24:21,508 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:24:21,509 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 51 treesize of output 40 [2023-11-17 12:24:21,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 326 treesize of output 294 [2023-11-17 12:24:21,514 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 136 treesize of output 132 [2023-11-17 12:24:21,518 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 68 treesize of output 62 [2023-11-17 12:24:21,520 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 126 treesize of output 118 [2023-11-17 12:24:21,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-11-17 12:24:21,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134648722] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:24:21,567 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:24:21,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 24 [2023-11-17 12:24:21,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047139418] [2023-11-17 12:24:21,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:24:21,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-17 12:24:21,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:24:21,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-17 12:24:21,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=451, Unknown=16, NotChecked=90, Total=650 [2023-11-17 12:24:21,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 46 [2023-11-17 12:24:21,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 4633 transitions, 131543 flow. Second operand has 26 states, 26 states have (on average 6.846153846153846) internal successors, (178), 26 states have internal predecessors, (178), 0 states have call successors, (0), 0 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 12:24:21,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:24:21,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 46 [2023-11-17 12:24:21,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:24:56,269 INFO L124 PetriNetUnfolderBase]: 28458/40411 cut-off events. [2023-11-17 12:24:56,270 INFO L125 PetriNetUnfolderBase]: For 1322759/1322759 co-relation queries the response was YES. [2023-11-17 12:24:57,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469824 conditions, 40411 events. 28458/40411 cut-off events. For 1322759/1322759 co-relation queries the response was YES. Maximal size of possible extension queue 1931. Compared 259060 event pairs, 2297 based on Foata normal form. 2/40413 useless extension candidates. Maximal degree in co-relation 468841. Up to 27583 conditions per place. [2023-11-17 12:24:57,294 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 3223 selfloop transitions, 1920 changer transitions 2/5145 dead transitions. [2023-11-17 12:24:57,294 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 5145 transitions, 153359 flow [2023-11-17 12:24:57,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 12:24:57,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 12:24:57,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 212 transitions. [2023-11-17 12:24:57,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35451505016722407 [2023-11-17 12:24:57,295 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 212 transitions. [2023-11-17 12:24:57,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 212 transitions. [2023-11-17 12:24:57,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:24:57,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 212 transitions. [2023-11-17 12:24:57,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 16.307692307692307) internal successors, (212), 13 states have internal predecessors, (212), 0 states have call successors, (0), 0 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 12:24:57,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 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 12:24:57,296 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 46.0) internal successors, (644), 14 states have internal predecessors, (644), 0 states have call successors, (0), 0 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 12:24:57,296 INFO L175 Difference]: Start difference. First operand has 414 places, 4633 transitions, 131543 flow. Second operand 13 states and 212 transitions. [2023-11-17 12:24:57,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 5145 transitions, 153359 flow [2023-11-17 12:25:35,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 5145 transitions, 151503 flow, removed 383 selfloop flow, removed 9 redundant places. [2023-11-17 12:25:35,985 INFO L231 Difference]: Finished difference. Result has 423 places, 4776 transitions, 141005 flow [2023-11-17 12:25:35,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=46, PETRI_DIFFERENCE_MINUEND_FLOW=129687, PETRI_DIFFERENCE_MINUEND_PLACES=405, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1789, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2729, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=141005, PETRI_PLACES=423, PETRI_TRANSITIONS=4776} [2023-11-17 12:25:35,988 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 391 predicate places. [2023-11-17 12:25:35,989 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 4776 transitions, 141005 flow [2023-11-17 12:25:35,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 6.846153846153846) internal successors, (178), 26 states have internal predecessors, (178), 0 states have call successors, (0), 0 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 12:25:35,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:25:35,989 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 12:25:35,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-17 12:25:36,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-17 12:25:36,195 INFO L420 AbstractCegarLoop]: === Iteration 26 === 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 12:25:36,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:25:36,196 INFO L85 PathProgramCache]: Analyzing trace with hash -507293576, now seen corresponding path program 6 times [2023-11-17 12:25:36,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:25:36,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311535731] [2023-11-17 12:25:36,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:25:36,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:25:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:25:36,615 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:25:36,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:25:36,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311535731] [2023-11-17 12:25:36,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311535731] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:25:36,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [518853068] [2023-11-17 12:25:36,616 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 12:25:36,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:25:36,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:25:36,617 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:25:36,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-17 12:25:36,724 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-17 12:25:36,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:25:36,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-17 12:25:36,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:25:36,779 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 12:25:36,807 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 12:25:36,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 12:25:36,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-17 12:25:36,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 12:25:36,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-17 12:25:37,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-11-17 12:25:37,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:25:37,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:25:37,396 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:25:37,397 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 55 treesize of output 44 [2023-11-17 12:25:37,405 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:25:37,405 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 830 treesize of output 742 [2023-11-17 12:25:37,412 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 176 treesize of output 164 [2023-11-17 12:25:37,417 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 164 treesize of output 140 [2023-11-17 12:25:37,428 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 12:25:37,429 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 76 treesize of output 71 [2023-11-17 12:25:37,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:25:37,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [518853068] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:25:37,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:25:37,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 25 [2023-11-17 12:25:37,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957909269] [2023-11-17 12:25:37,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:25:37,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-17 12:25:37,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:25:37,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-17 12:25:37,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=589, Unknown=10, NotChecked=0, Total=702 [2023-11-17 12:25:37,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 46 [2023-11-17 12:25:37,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 4776 transitions, 141005 flow. Second operand has 27 states, 27 states have (on average 6.222222222222222) internal successors, (168), 27 states have internal predecessors, (168), 0 states have call successors, (0), 0 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 12:25:37,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:25:37,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 46 [2023-11-17 12:25:37,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:25:47,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-17 12:25:49,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-17 12:25:51,896 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-17 12:26:22,885 INFO L124 PetriNetUnfolderBase]: 30194/42949 cut-off events. [2023-11-17 12:26:22,885 INFO L125 PetriNetUnfolderBase]: For 1525039/1525039 co-relation queries the response was YES. [2023-11-17 12:26:24,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517173 conditions, 42949 events. 30194/42949 cut-off events. For 1525039/1525039 co-relation queries the response was YES. Maximal size of possible extension queue 2037. Compared 278328 event pairs, 2650 based on Foata normal form. 3/42952 useless extension candidates. Maximal degree in co-relation 516183. Up to 32804 conditions per place. [2023-11-17 12:26:24,279 INFO L140 encePairwiseOnDemand]: 35/46 looper letters, 4114 selfloop transitions, 1499 changer transitions 6/5619 dead transitions. [2023-11-17 12:26:24,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 5619 transitions, 175317 flow [2023-11-17 12:26:24,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 12:26:24,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 12:26:24,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 233 transitions. [2023-11-17 12:26:24,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36180124223602483 [2023-11-17 12:26:24,280 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 233 transitions. [2023-11-17 12:26:24,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 233 transitions. [2023-11-17 12:26:24,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:26:24,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 233 transitions. [2023-11-17 12:26:24,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 16.642857142857142) internal successors, (233), 14 states have internal predecessors, (233), 0 states have call successors, (0), 0 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 12:26:24,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 46.0) internal successors, (690), 15 states have internal predecessors, (690), 0 states have call successors, (0), 0 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 12:26:24,281 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 46.0) internal successors, (690), 15 states have internal predecessors, (690), 0 states have call successors, (0), 0 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 12:26:24,281 INFO L175 Difference]: Start difference. First operand has 423 places, 4776 transitions, 141005 flow. Second operand 14 states and 233 transitions. [2023-11-17 12:26:24,281 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 5619 transitions, 175317 flow Received shutdown request... [2023-11-17 12:26:59,165 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 12:26:59,165 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 12:26:59,166 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 12:26:59,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-11-17 12:26:59,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-17 12:26:59,372 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-11-17 12:26:59,373 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 12:26:59,373 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 12:26:59,373 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 12:26:59,373 INFO L445 BasicCegarLoop]: Path program histogram: [9, 6, 6, 1, 1, 1, 1, 1] [2023-11-17 12:26:59,376 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 12:26:59,376 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 12:26:59,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 12:26:59 BasicIcfg [2023-11-17 12:26:59,377 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 12:26:59,378 INFO L158 Benchmark]: Toolchain (without parser) took 542437.05ms. Allocated memory was 206.6MB in the beginning and 5.5GB in the end (delta: 5.3GB). Free memory was 160.0MB in the beginning and 3.2GB in the end (delta: -3.0GB). Peak memory consumption was 5.5GB. Max. memory is 8.0GB. [2023-11-17 12:26:59,378 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 206.6MB. Free memory is still 159.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 12:26:59,378 INFO L158 Benchmark]: CACSL2BoogieTranslator took 170.40ms. Allocated memory is still 206.6MB. Free memory was 159.7MB in the beginning and 147.8MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-11-17 12:26:59,378 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.38ms. Allocated memory is still 206.6MB. Free memory was 147.8MB in the beginning and 145.4MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 12:26:59,379 INFO L158 Benchmark]: Boogie Preprocessor took 23.32ms. Allocated memory is still 206.6MB. Free memory was 145.4MB in the beginning and 143.7MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 12:26:59,379 INFO L158 Benchmark]: RCFGBuilder took 740.74ms. Allocated memory was 206.6MB in the beginning and 317.7MB in the end (delta: 111.1MB). Free memory was 143.7MB in the beginning and 253.4MB in the end (delta: -109.8MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. [2023-11-17 12:26:59,380 INFO L158 Benchmark]: TraceAbstraction took 541471.26ms. Allocated memory was 317.7MB in the beginning and 5.5GB in the end (delta: 5.1GB). Free memory was 252.4MB in the beginning and 3.2GB in the end (delta: -3.0GB). Peak memory consumption was 5.5GB. Max. memory is 8.0GB. [2023-11-17 12:26:59,381 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 206.6MB. Free memory is still 159.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 170.40ms. Allocated memory is still 206.6MB. Free memory was 159.7MB in the beginning and 147.8MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.38ms. Allocated memory is still 206.6MB. Free memory was 147.8MB in the beginning and 145.4MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.32ms. Allocated memory is still 206.6MB. Free memory was 145.4MB in the beginning and 143.7MB in the end (delta: 1.7MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 740.74ms. Allocated memory was 206.6MB in the beginning and 317.7MB in the end (delta: 111.1MB). Free memory was 143.7MB in the beginning and 253.4MB in the end (delta: -109.8MB). Peak memory consumption was 34.6MB. Max. memory is 8.0GB. * TraceAbstraction took 541471.26ms. Allocated memory was 317.7MB in the beginning and 5.5GB in the end (delta: 5.1GB). Free memory was 252.4MB in the beginning and 3.2GB in the end (delta: -3.0GB). Peak memory consumption was 5.5GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.4s, 40 PlacesBefore, 32 PlacesAfterwards, 34 TransitionsBefore, 26 TransitionsAfterwards, 396 CoEnabledTransitionPairs, 2 FixpointIterations, 1 TrivialSequentialCompositions, 7 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 8 TotalNumberOfCompositions, 552 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 430, independent: 413, independent conditional: 0, independent unconditional: 413, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 242, independent: 229, independent conditional: 0, independent unconditional: 229, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 242, independent: 229, independent conditional: 0, independent unconditional: 229, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 13, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 13, dependent conditional: 0, dependent unconditional: 13, 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: 430, independent: 184, independent conditional: 0, independent unconditional: 184, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 242, unknown conditional: 0, unknown unconditional: 242] , Statistics on independence cache: Total cache size (in pairs): 80, Positive cache size: 74, Positive conditional cache size: 0, Positive unconditional cache size: 74, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 56 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 541.4s, OverallIterations: 26, TraceHistogramMax: 1, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 519.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 44 mSolverCounterUnknown, 3102 SdHoareTripleChecker+Valid, 14.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3102 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 13.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1404 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 134 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19579 IncrementalHoareTripleChecker+Invalid, 21161 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 134 mSolverCounterUnsat, 0 mSDtfsCounter, 19579 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1412 GetRequests, 763 SyntacticMatches, 18 SemanticMatches, 631 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 4708 ImplicationChecksByTransitivity, 7.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=141005occurred in iteration=25, InterpolantAutomatonStates: 386, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 13.6s InterpolantComputationTime, 1115 NumberOfCodeBlocks, 1115 NumberOfCodeBlocksAsserted, 67 NumberOfCheckSat, 1560 ConstructedInterpolants, 44 QuantifiedInterpolants, 13376 SizeOfPredicates, 260 NumberOfNonLiveVariables, 5027 ConjunctsInSsa, 599 ConjunctsInUnsatCore, 70 InterpolantComputations, 10 PerfectInterpolantSequences, 50/180 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown