/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 16:05:23,095 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 16:05:23,156 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 16:05:23,171 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 16:05:23,172 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 16:05:23,172 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 16:05:23,173 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 16:05:23,173 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 16:05:23,173 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 16:05:23,173 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 16:05:23,174 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 16:05:23,174 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 16:05:23,174 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 16:05:23,174 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 16:05:23,174 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 16:05:23,175 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 16:05:23,175 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 16:05:23,175 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 16:05:23,175 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 16:05:23,176 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 16:05:23,176 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 16:05:23,179 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 16:05:23,179 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 16:05:23,179 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 16:05:23,180 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 16:05:23,180 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:05:23,180 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 16:05:23,180 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 16:05:23,181 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 16:05:23,181 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 16:05:23,181 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 16:05:23,181 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 16:05:23,182 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 16:05:23,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 16:05:23,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 16:05:23,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 16:05:23,371 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 16:05:23,372 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 16:05:23,372 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c [2023-11-17 16:05:24,463 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 16:05:24,614 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 16:05:24,614 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-2.wvr.c [2023-11-17 16:05:24,622 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7efb56f99/4c81420100854b87bd6f4286a0a5811b/FLAGc5f9715f8 [2023-11-17 16:05:24,634 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7efb56f99/4c81420100854b87bd6f4286a0a5811b [2023-11-17 16:05:24,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 16:05:24,637 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 16:05:24,641 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 16:05:24,641 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 16:05:24,644 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 16:05:24,644 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:05:24" (1/1) ... [2023-11-17 16:05:24,645 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@123b458a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:24, skipping insertion in model container [2023-11-17 16:05:24,645 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:05:24" (1/1) ... [2023-11-17 16:05:24,673 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 16:05:24,791 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/parallel-parallel-sum-2.wvr.c[4303,4316] [2023-11-17 16:05:24,803 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:05:24,823 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 16:05:24,841 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/parallel-parallel-sum-2.wvr.c[4303,4316] [2023-11-17 16:05:24,844 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:05:24,850 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:05:24,850 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:05:24,855 INFO L206 MainTranslator]: Completed translation [2023-11-17 16:05:24,856 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:24 WrapperNode [2023-11-17 16:05:24,856 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 16:05:24,856 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 16:05:24,857 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 16:05:24,857 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 16:05:24,862 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:24" (1/1) ... [2023-11-17 16:05:24,879 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:24" (1/1) ... [2023-11-17 16:05:24,903 INFO L138 Inliner]: procedures = 29, calls = 88, calls flagged for inlining = 22, calls inlined = 32, statements flattened = 409 [2023-11-17 16:05:24,904 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 16:05:24,904 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 16:05:24,904 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 16:05:24,904 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 16:05:24,911 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:24" (1/1) ... [2023-11-17 16:05:24,911 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:24" (1/1) ... [2023-11-17 16:05:24,915 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:24" (1/1) ... [2023-11-17 16:05:24,915 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:24" (1/1) ... [2023-11-17 16:05:24,934 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:24" (1/1) ... [2023-11-17 16:05:24,938 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:24" (1/1) ... [2023-11-17 16:05:24,940 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:24" (1/1) ... [2023-11-17 16:05:24,942 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:24" (1/1) ... [2023-11-17 16:05:24,944 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 16:05:24,945 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 16:05:24,945 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 16:05:24,945 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 16:05:24,946 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:24" (1/1) ... [2023-11-17 16:05:24,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:05:24,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:05:24,976 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 16:05:24,981 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 16:05:25,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 16:05:25,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 16:05:25,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 16:05:25,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 16:05:25,003 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 16:05:25,003 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 16:05:25,003 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 16:05:25,003 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 16:05:25,004 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 16:05:25,004 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 16:05:25,004 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-17 16:05:25,004 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-17 16:05:25,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 16:05:25,004 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-11-17 16:05:25,004 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-11-17 16:05:25,004 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-11-17 16:05:25,004 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-11-17 16:05:25,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 16:05:25,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 16:05:25,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 16:05:25,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 16:05:25,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 16:05:25,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 16:05:25,008 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 16:05:25,128 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 16:05:25,130 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 16:05:25,578 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 16:05:25,761 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 16:05:25,761 INFO L307 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-17 16:05:25,762 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:05:25 BoogieIcfgContainer [2023-11-17 16:05:25,762 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 16:05:25,765 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 16:05:25,765 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 16:05:25,767 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 16:05:25,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 04:05:24" (1/3) ... [2023-11-17 16:05:25,768 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@86963dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:05:25, skipping insertion in model container [2023-11-17 16:05:25,768 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:05:24" (2/3) ... [2023-11-17 16:05:25,769 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@86963dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:05:25, skipping insertion in model container [2023-11-17 16:05:25,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:05:25" (3/3) ... [2023-11-17 16:05:25,771 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-2.wvr.c [2023-11-17 16:05:25,784 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 16:05:25,784 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 16:05:25,784 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 16:05:25,893 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-11-17 16:05:25,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 327 places, 331 transitions, 728 flow [2023-11-17 16:05:26,070 INFO L124 PetriNetUnfolderBase]: 21/285 cut-off events. [2023-11-17 16:05:26,070 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-17 16:05:26,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 285 events. 21/285 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 325 event pairs, 0 based on Foata normal form. 0/263 useless extension candidates. Maximal degree in co-relation 243. Up to 3 conditions per place. [2023-11-17 16:05:26,078 INFO L82 GeneralOperation]: Start removeDead. Operand has 327 places, 331 transitions, 728 flow [2023-11-17 16:05:26,089 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 274 places, 276 transitions, 600 flow [2023-11-17 16:05:26,091 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 16:05:26,131 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 274 places, 276 transitions, 600 flow [2023-11-17 16:05:26,133 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 274 places, 276 transitions, 600 flow [2023-11-17 16:05:26,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 274 places, 276 transitions, 600 flow [2023-11-17 16:05:26,164 INFO L124 PetriNetUnfolderBase]: 21/276 cut-off events. [2023-11-17 16:05:26,164 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-17 16:05:26,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 276 events. 21/276 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 325 event pairs, 0 based on Foata normal form. 0/255 useless extension candidates. Maximal degree in co-relation 243. Up to 3 conditions per place. [2023-11-17 16:05:26,169 INFO L119 LiptonReduction]: Number of co-enabled transitions 10188 [2023-11-17 16:05:32,431 INFO L134 LiptonReduction]: Checked pairs total: 32492 [2023-11-17 16:05:32,431 INFO L136 LiptonReduction]: Total number of compositions: 251 [2023-11-17 16:05:32,441 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 16:05:32,471 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;@2d230e56, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 16:05:32,471 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-11-17 16:05:32,493 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 16:05:32,493 INFO L124 PetriNetUnfolderBase]: 10/65 cut-off events. [2023-11-17 16:05:32,493 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-17 16:05:32,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:32,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:05:32,494 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-17 16:05:32,497 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:32,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1307643581, now seen corresponding path program 1 times [2023-11-17 16:05:32,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:32,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316714299] [2023-11-17 16:05:32,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:32,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:32,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:32,804 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 16:05:32,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:32,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316714299] [2023-11-17 16:05:32,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316714299] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:05:32,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:05:32,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 16:05:32,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061005072] [2023-11-17 16:05:32,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:05:32,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-17 16:05:32,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:32,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-17 16:05:32,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-17 16:05:32,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 284 out of 586 [2023-11-17 16:05:32,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 66 transitions, 180 flow. Second operand has 2 states, 2 states have (on average 299.5) internal successors, (599), 2 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:32,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:32,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 284 of 586 [2023-11-17 16:05:32,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:33,856 INFO L124 PetriNetUnfolderBase]: 9849/12901 cut-off events. [2023-11-17 16:05:33,857 INFO L125 PetriNetUnfolderBase]: For 1844/1844 co-relation queries the response was YES. [2023-11-17 16:05:33,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26982 conditions, 12901 events. 9849/12901 cut-off events. For 1844/1844 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 58443 event pairs, 5521 based on Foata normal form. 0/8403 useless extension candidates. Maximal degree in co-relation 26419. Up to 11925 conditions per place. [2023-11-17 16:05:33,937 INFO L140 encePairwiseOnDemand]: 585/586 looper letters, 41 selfloop transitions, 0 changer transitions 0/65 dead transitions. [2023-11-17 16:05:33,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 65 transitions, 260 flow [2023-11-17 16:05:33,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 16:05:33,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-17 16:05:33,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 610 transitions. [2023-11-17 16:05:33,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5204778156996587 [2023-11-17 16:05:33,951 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 610 transitions. [2023-11-17 16:05:33,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 610 transitions. [2023-11-17 16:05:33,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:33,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 610 transitions. [2023-11-17 16:05:33,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 305.0) internal successors, (610), 2 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:33,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 586.0) internal successors, (1758), 3 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:33,962 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 586.0) internal successors, (1758), 3 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:33,963 INFO L175 Difference]: Start difference. First operand has 75 places, 66 transitions, 180 flow. Second operand 2 states and 610 transitions. [2023-11-17 16:05:33,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 65 transitions, 260 flow [2023-11-17 16:05:33,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 65 transitions, 228 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-17 16:05:33,982 INFO L231 Difference]: Finished difference. Result has 64 places, 65 transitions, 146 flow [2023-11-17 16:05:33,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=146, PETRI_PLACES=64, PETRI_TRANSITIONS=65} [2023-11-17 16:05:33,985 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -11 predicate places. [2023-11-17 16:05:33,985 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 65 transitions, 146 flow [2023-11-17 16:05:33,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 299.5) internal successors, (599), 2 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:33,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:33,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:05:33,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 16:05:33,986 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-17 16:05:33,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:33,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1787494166, now seen corresponding path program 1 times [2023-11-17 16:05:33,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:33,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823432085] [2023-11-17 16:05:33,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:33,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:34,263 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 16:05:34,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:34,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823432085] [2023-11-17 16:05:34,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823432085] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:05:34,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:05:34,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 16:05:34,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179874521] [2023-11-17 16:05:34,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:05:34,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:05:34,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:34,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:05:34,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 16:05:34,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 586 [2023-11-17 16:05:34,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 65 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:34,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:34,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 586 [2023-11-17 16:05:34,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:35,548 INFO L124 PetriNetUnfolderBase]: 13737/18502 cut-off events. [2023-11-17 16:05:35,548 INFO L125 PetriNetUnfolderBase]: For 615/615 co-relation queries the response was YES. [2023-11-17 16:05:35,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36258 conditions, 18502 events. 13737/18502 cut-off events. For 615/615 co-relation queries the response was YES. Maximal size of possible extension queue 533. Compared 94337 event pairs, 8123 based on Foata normal form. 54/12750 useless extension candidates. Maximal degree in co-relation 36255. Up to 11925 conditions per place. [2023-11-17 16:05:35,613 INFO L140 encePairwiseOnDemand]: 580/586 looper letters, 40 selfloop transitions, 2 changer transitions 31/97 dead transitions. [2023-11-17 16:05:35,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 97 transitions, 370 flow [2023-11-17 16:05:35,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:05:35,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:05:35,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1104 transitions. [2023-11-17 16:05:35,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4709897610921502 [2023-11-17 16:05:35,615 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1104 transitions. [2023-11-17 16:05:35,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1104 transitions. [2023-11-17 16:05:35,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:35,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1104 transitions. [2023-11-17 16:05:35,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:35,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 586.0) internal successors, (2930), 5 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:35,623 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 586.0) internal successors, (2930), 5 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:35,623 INFO L175 Difference]: Start difference. First operand has 64 places, 65 transitions, 146 flow. Second operand 4 states and 1104 transitions. [2023-11-17 16:05:35,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 97 transitions, 370 flow [2023-11-17 16:05:35,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 97 transitions, 370 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 16:05:35,627 INFO L231 Difference]: Finished difference. Result has 69 places, 66 transitions, 164 flow [2023-11-17 16:05:35,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=69, PETRI_TRANSITIONS=66} [2023-11-17 16:05:35,630 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -6 predicate places. [2023-11-17 16:05:35,631 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 66 transitions, 164 flow [2023-11-17 16:05:35,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:35,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:35,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:05:35,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 16:05:35,632 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-17 16:05:35,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:35,632 INFO L85 PathProgramCache]: Analyzing trace with hash -107933152, now seen corresponding path program 1 times [2023-11-17 16:05:35,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:35,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700541200] [2023-11-17 16:05:35,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:35,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:36,007 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:05:36,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:36,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700541200] [2023-11-17 16:05:36,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700541200] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:05:36,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:05:36,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:05:36,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776720724] [2023-11-17 16:05:36,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:05:36,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:05:36,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:36,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:05:36,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:05:36,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 586 [2023-11-17 16:05:36,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 66 transitions, 164 flow. Second operand has 6 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:36,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:36,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 586 [2023-11-17 16:05:36,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:37,440 INFO L124 PetriNetUnfolderBase]: 15773/20650 cut-off events. [2023-11-17 16:05:37,441 INFO L125 PetriNetUnfolderBase]: For 3315/3315 co-relation queries the response was YES. [2023-11-17 16:05:37,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44162 conditions, 20650 events. 15773/20650 cut-off events. For 3315/3315 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 99705 event pairs, 2364 based on Foata normal form. 1/16763 useless extension candidates. Maximal degree in co-relation 44156. Up to 8401 conditions per place. [2023-11-17 16:05:37,531 INFO L140 encePairwiseOnDemand]: 577/586 looper letters, 117 selfloop transitions, 10 changer transitions 9/160 dead transitions. [2023-11-17 16:05:37,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 160 transitions, 673 flow [2023-11-17 16:05:37,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:05:37,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:05:37,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1762 transitions. [2023-11-17 16:05:37,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011376564277589 [2023-11-17 16:05:37,534 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1762 transitions. [2023-11-17 16:05:37,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1762 transitions. [2023-11-17 16:05:37,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:37,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1762 transitions. [2023-11-17 16:05:37,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 293.6666666666667) internal successors, (1762), 6 states have internal predecessors, (1762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:37,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:37,543 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:37,543 INFO L175 Difference]: Start difference. First operand has 69 places, 66 transitions, 164 flow. Second operand 6 states and 1762 transitions. [2023-11-17 16:05:37,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 160 transitions, 673 flow [2023-11-17 16:05:37,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 160 transitions, 663 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-17 16:05:37,553 INFO L231 Difference]: Finished difference. Result has 75 places, 74 transitions, 223 flow [2023-11-17 16:05:37,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=223, PETRI_PLACES=75, PETRI_TRANSITIONS=74} [2023-11-17 16:05:37,554 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 0 predicate places. [2023-11-17 16:05:37,554 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 74 transitions, 223 flow [2023-11-17 16:05:37,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:37,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:37,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:05:37,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 16:05:37,556 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-17 16:05:37,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:37,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1494196618, now seen corresponding path program 2 times [2023-11-17 16:05:37,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:37,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162716114] [2023-11-17 16:05:37,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:37,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:37,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:37,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:05:37,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:37,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162716114] [2023-11-17 16:05:37,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162716114] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:05:37,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:05:37,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 16:05:37,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62426280] [2023-11-17 16:05:37,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:05:37,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 16:05:37,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:37,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 16:05:37,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:05:37,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 586 [2023-11-17 16:05:37,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 74 transitions, 223 flow. Second operand has 6 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:37,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:37,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 586 [2023-11-17 16:05:37,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:39,411 INFO L124 PetriNetUnfolderBase]: 15331/20250 cut-off events. [2023-11-17 16:05:39,411 INFO L125 PetriNetUnfolderBase]: For 11309/11309 co-relation queries the response was YES. [2023-11-17 16:05:39,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50710 conditions, 20250 events. 15331/20250 cut-off events. For 11309/11309 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 100054 event pairs, 2734 based on Foata normal form. 1/18808 useless extension candidates. Maximal degree in co-relation 50701. Up to 8295 conditions per place. [2023-11-17 16:05:39,505 INFO L140 encePairwiseOnDemand]: 577/586 looper letters, 112 selfloop transitions, 12 changer transitions 9/157 dead transitions. [2023-11-17 16:05:39,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 157 transitions, 724 flow [2023-11-17 16:05:39,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 16:05:39,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 16:05:39,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1757 transitions. [2023-11-17 16:05:39,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4997155858930603 [2023-11-17 16:05:39,509 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1757 transitions. [2023-11-17 16:05:39,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1757 transitions. [2023-11-17 16:05:39,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:39,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1757 transitions. [2023-11-17 16:05:39,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 292.8333333333333) internal successors, (1757), 6 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:39,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:39,518 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 586.0) internal successors, (4102), 7 states have internal predecessors, (4102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:39,518 INFO L175 Difference]: Start difference. First operand has 75 places, 74 transitions, 223 flow. Second operand 6 states and 1757 transitions. [2023-11-17 16:05:39,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 157 transitions, 724 flow [2023-11-17 16:05:39,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 157 transitions, 704 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-11-17 16:05:39,581 INFO L231 Difference]: Finished difference. Result has 80 places, 77 transitions, 268 flow [2023-11-17 16:05:39,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=268, PETRI_PLACES=80, PETRI_TRANSITIONS=77} [2023-11-17 16:05:39,582 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 5 predicate places. [2023-11-17 16:05:39,582 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 77 transitions, 268 flow [2023-11-17 16:05:39,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 276.5) internal successors, (1659), 6 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:39,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:39,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:05:39,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 16:05:39,584 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-17 16:05:39,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:39,584 INFO L85 PathProgramCache]: Analyzing trace with hash 2130726719, now seen corresponding path program 1 times [2023-11-17 16:05:39,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:39,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492623022] [2023-11-17 16:05:39,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:39,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:39,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:39,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:39,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:39,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492623022] [2023-11-17 16:05:39,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492623022] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:05:39,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284266049] [2023-11-17 16:05:39,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:39,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:39,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:05:39,775 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 16:05:39,800 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 16:05:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:39,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 16:05:39,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:05:40,223 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 16:05:40,223 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 16:05:40,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284266049] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:05:40,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 16:05:40,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2023-11-17 16:05:40,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768134697] [2023-11-17 16:05:40,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:05:40,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:05:40,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:40,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:05:40,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:05:40,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 586 [2023-11-17 16:05:40,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 77 transitions, 268 flow. Second operand has 4 states, 4 states have (on average 279.5) internal successors, (1118), 4 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:40,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:40,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 586 [2023-11-17 16:05:40,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:42,107 INFO L124 PetriNetUnfolderBase]: 19175/25251 cut-off events. [2023-11-17 16:05:42,107 INFO L125 PetriNetUnfolderBase]: For 10135/10135 co-relation queries the response was YES. [2023-11-17 16:05:42,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62308 conditions, 25251 events. 19175/25251 cut-off events. For 10135/10135 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 127066 event pairs, 3570 based on Foata normal form. 70/23535 useless extension candidates. Maximal degree in co-relation 62297. Up to 14537 conditions per place. [2023-11-17 16:05:42,217 INFO L140 encePairwiseOnDemand]: 580/586 looper letters, 100 selfloop transitions, 11 changer transitions 2/137 dead transitions. [2023-11-17 16:05:42,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 137 transitions, 660 flow [2023-11-17 16:05:42,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:05:42,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:05:42,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1191 transitions. [2023-11-17 16:05:42,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5081058020477816 [2023-11-17 16:05:42,220 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1191 transitions. [2023-11-17 16:05:42,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1191 transitions. [2023-11-17 16:05:42,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:42,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1191 transitions. [2023-11-17 16:05:42,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 297.75) internal successors, (1191), 4 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:42,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 586.0) internal successors, (2930), 5 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:42,225 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 586.0) internal successors, (2930), 5 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:42,225 INFO L175 Difference]: Start difference. First operand has 80 places, 77 transitions, 268 flow. Second operand 4 states and 1191 transitions. [2023-11-17 16:05:42,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 137 transitions, 660 flow [2023-11-17 16:05:42,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 137 transitions, 641 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-17 16:05:42,247 INFO L231 Difference]: Finished difference. Result has 80 places, 79 transitions, 295 flow [2023-11-17 16:05:42,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=295, PETRI_PLACES=80, PETRI_TRANSITIONS=79} [2023-11-17 16:05:42,247 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 5 predicate places. [2023-11-17 16:05:42,247 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 79 transitions, 295 flow [2023-11-17 16:05:42,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 279.5) internal successors, (1118), 4 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:42,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:42,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:05:42,257 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 16:05:42,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:42,455 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-17 16:05:42,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:42,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1470832994, now seen corresponding path program 1 times [2023-11-17 16:05:42,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:42,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555764141] [2023-11-17 16:05:42,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:42,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:42,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:42,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:42,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:42,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555764141] [2023-11-17 16:05:42,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555764141] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:05:42,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464407559] [2023-11-17 16:05:42,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:42,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:42,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:05:42,665 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 16:05:42,693 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 16:05:42,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:42,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 16:05:42,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:05:42,933 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 16:05:42,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:05:42,999 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 16:05:43,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464407559] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:05:43,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:05:43,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-17 16:05:43,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897742511] [2023-11-17 16:05:43,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:05:43,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 16:05:43,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:43,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 16:05:43,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-17 16:05:43,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 586 [2023-11-17 16:05:43,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 79 transitions, 295 flow. Second operand has 9 states, 9 states have (on average 265.44444444444446) internal successors, (2389), 9 states have internal predecessors, (2389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:43,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:43,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 586 [2023-11-17 16:05:43,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:45,327 INFO L124 PetriNetUnfolderBase]: 22515/30428 cut-off events. [2023-11-17 16:05:45,328 INFO L125 PetriNetUnfolderBase]: For 25922/25922 co-relation queries the response was YES. [2023-11-17 16:05:45,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76340 conditions, 30428 events. 22515/30428 cut-off events. For 25922/25922 co-relation queries the response was YES. Maximal size of possible extension queue 904. Compared 166639 event pairs, 3858 based on Foata normal form. 841/29104 useless extension candidates. Maximal degree in co-relation 76329. Up to 18056 conditions per place. [2023-11-17 16:05:45,477 INFO L140 encePairwiseOnDemand]: 578/586 looper letters, 99 selfloop transitions, 14 changer transitions 35/172 dead transitions. [2023-11-17 16:05:45,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 172 transitions, 859 flow [2023-11-17 16:05:45,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:05:45,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:05:45,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1931 transitions. [2023-11-17 16:05:45,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47074597757191616 [2023-11-17 16:05:45,481 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1931 transitions. [2023-11-17 16:05:45,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1931 transitions. [2023-11-17 16:05:45,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:45,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1931 transitions. [2023-11-17 16:05:45,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 275.85714285714283) internal successors, (1931), 7 states have internal predecessors, (1931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:45,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 586.0) internal successors, (4688), 8 states have internal predecessors, (4688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:45,489 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 586.0) internal successors, (4688), 8 states have internal predecessors, (4688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:45,489 INFO L175 Difference]: Start difference. First operand has 80 places, 79 transitions, 295 flow. Second operand 7 states and 1931 transitions. [2023-11-17 16:05:45,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 172 transitions, 859 flow [2023-11-17 16:05:45,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 172 transitions, 841 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 16:05:45,526 INFO L231 Difference]: Finished difference. Result has 86 places, 82 transitions, 337 flow [2023-11-17 16:05:45,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=337, PETRI_PLACES=86, PETRI_TRANSITIONS=82} [2023-11-17 16:05:45,528 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 11 predicate places. [2023-11-17 16:05:45,528 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 82 transitions, 337 flow [2023-11-17 16:05:45,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 265.44444444444446) internal successors, (2389), 9 states have internal predecessors, (2389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:45,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:45,530 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:05:45,535 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 16:05:45,735 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,SelfDestructingSolverStorable5 [2023-11-17 16:05:45,735 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-17 16:05:45,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:45,736 INFO L85 PathProgramCache]: Analyzing trace with hash -2050851152, now seen corresponding path program 2 times [2023-11-17 16:05:45,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:45,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292421138] [2023-11-17 16:05:45,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:45,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:45,905 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:05:45,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:45,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292421138] [2023-11-17 16:05:45,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292421138] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:05:45,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588474487] [2023-11-17 16:05:45,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:05:45,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:45,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:05:45,907 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 16:05:45,937 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 16:05:46,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:05:46,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:05:46,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 16:05:46,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:05:46,186 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:05:46,187 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 16:05:46,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588474487] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:05:46,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 16:05:46,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-17 16:05:46,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078047057] [2023-11-17 16:05:46,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:05:46,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:05:46,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:46,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:05:46,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-17 16:05:46,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 271 out of 586 [2023-11-17 16:05:46,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 82 transitions, 337 flow. Second operand has 4 states, 4 states have (on average 279.5) internal successors, (1118), 4 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:46,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:46,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 271 of 586 [2023-11-17 16:05:46,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:48,229 INFO L124 PetriNetUnfolderBase]: 20216/26889 cut-off events. [2023-11-17 16:05:48,229 INFO L125 PetriNetUnfolderBase]: For 27541/27541 co-relation queries the response was YES. [2023-11-17 16:05:48,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71225 conditions, 26889 events. 20216/26889 cut-off events. For 27541/27541 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 141874 event pairs, 4600 based on Foata normal form. 110/24962 useless extension candidates. Maximal degree in co-relation 71212. Up to 22290 conditions per place. [2023-11-17 16:05:48,404 INFO L140 encePairwiseOnDemand]: 579/586 looper letters, 68 selfloop transitions, 5 changer transitions 35/132 dead transitions. [2023-11-17 16:05:48,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 132 transitions, 646 flow [2023-11-17 16:05:48,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:05:48,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:05:48,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1189 transitions. [2023-11-17 16:05:48,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5072525597269625 [2023-11-17 16:05:48,407 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1189 transitions. [2023-11-17 16:05:48,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1189 transitions. [2023-11-17 16:05:48,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:48,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1189 transitions. [2023-11-17 16:05:48,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 297.25) internal successors, (1189), 4 states have internal predecessors, (1189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:48,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 586.0) internal successors, (2930), 5 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:48,413 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 586.0) internal successors, (2930), 5 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:48,413 INFO L175 Difference]: Start difference. First operand has 86 places, 82 transitions, 337 flow. Second operand 4 states and 1189 transitions. [2023-11-17 16:05:48,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 132 transitions, 646 flow [2023-11-17 16:05:48,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 132 transitions, 633 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-17 16:05:48,464 INFO L231 Difference]: Finished difference. Result has 86 places, 76 transitions, 276 flow [2023-11-17 16:05:48,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=276, PETRI_PLACES=86, PETRI_TRANSITIONS=76} [2023-11-17 16:05:48,466 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 11 predicate places. [2023-11-17 16:05:48,466 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 76 transitions, 276 flow [2023-11-17 16:05:48,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 279.5) internal successors, (1118), 4 states have internal predecessors, (1118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:48,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:48,466 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:05:48,482 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-17 16:05:48,672 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 16:05:48,673 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-17 16:05:48,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:48,673 INFO L85 PathProgramCache]: Analyzing trace with hash -680363732, now seen corresponding path program 1 times [2023-11-17 16:05:48,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:48,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972798162] [2023-11-17 16:05:48,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:48,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:50,554 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:50,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:50,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972798162] [2023-11-17 16:05:50,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972798162] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:05:50,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445218704] [2023-11-17 16:05:50,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:50,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:50,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:05:50,558 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 16:05:50,583 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 16:05:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:50,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-17 16:05:50,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:05:51,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:05:51,341 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 16:05:51,389 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 16:05:51,429 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:05:51,430 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:05:51,557 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:05:51,557 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 62 treesize of output 43 [2023-11-17 16:05:51,561 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 20 treesize of output 13 [2023-11-17 16:05:51,787 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:05:51,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445218704] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:05:51,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:05:51,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 8, 8] total 28 [2023-11-17 16:05:51,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914801087] [2023-11-17 16:05:51,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:05:51,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-17 16:05:51,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:51,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-17 16:05:51,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=754, Unknown=3, NotChecked=0, Total=870 [2023-11-17 16:05:51,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 586 [2023-11-17 16:05:51,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 76 transitions, 276 flow. Second operand has 30 states, 30 states have (on average 208.73333333333332) internal successors, (6262), 30 states have internal predecessors, (6262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:51,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:51,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 586 [2023-11-17 16:05:51,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:58,558 INFO L124 PetriNetUnfolderBase]: 50280/65995 cut-off events. [2023-11-17 16:05:58,558 INFO L125 PetriNetUnfolderBase]: For 62130/62130 co-relation queries the response was YES. [2023-11-17 16:05:58,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177771 conditions, 65995 events. 50280/65995 cut-off events. For 62130/62130 co-relation queries the response was YES. Maximal size of possible extension queue 1646. Compared 364312 event pairs, 6462 based on Foata normal form. 3/62335 useless extension candidates. Maximal degree in co-relation 177757. Up to 37539 conditions per place. [2023-11-17 16:05:58,963 INFO L140 encePairwiseOnDemand]: 569/586 looper letters, 327 selfloop transitions, 65 changer transitions 38/445 dead transitions. [2023-11-17 16:05:58,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 445 transitions, 2274 flow [2023-11-17 16:05:58,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-17 16:05:58,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-17 16:05:58,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 5140 transitions. [2023-11-17 16:05:58,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3813622199139338 [2023-11-17 16:05:58,973 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 5140 transitions. [2023-11-17 16:05:58,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 5140 transitions. [2023-11-17 16:05:58,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:58,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 5140 transitions. [2023-11-17 16:05:58,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 223.47826086956522) internal successors, (5140), 23 states have internal predecessors, (5140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:58,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 586.0) internal successors, (14064), 24 states have internal predecessors, (14064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:59,000 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 586.0) internal successors, (14064), 24 states have internal predecessors, (14064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:59,000 INFO L175 Difference]: Start difference. First operand has 86 places, 76 transitions, 276 flow. Second operand 23 states and 5140 transitions. [2023-11-17 16:05:59,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 445 transitions, 2274 flow [2023-11-17 16:05:59,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 445 transitions, 2203 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-11-17 16:05:59,412 INFO L231 Difference]: Finished difference. Result has 112 places, 135 transitions, 804 flow [2023-11-17 16:05:59,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=804, PETRI_PLACES=112, PETRI_TRANSITIONS=135} [2023-11-17 16:05:59,412 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 37 predicate places. [2023-11-17 16:05:59,413 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 135 transitions, 804 flow [2023-11-17 16:05:59,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 208.73333333333332) internal successors, (6262), 30 states have internal predecessors, (6262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:05:59,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:59,414 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:05:59,422 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 16:05:59,620 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 16:05:59,620 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-17 16:05:59,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:59,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1499296822, now seen corresponding path program 1 times [2023-11-17 16:05:59,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:59,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820642057] [2023-11-17 16:05:59,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:59,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:01,279 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:01,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:01,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820642057] [2023-11-17 16:06:01,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820642057] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:06:01,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845806167] [2023-11-17 16:06:01,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:01,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:06:01,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:06:01,289 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 16:06:01,301 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 16:06:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:01,475 INFO L262 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-17 16:06:01,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:06:02,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:06:02,059 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 16:06:02,166 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 16:06:02,231 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:06:02,232 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:06:02,307 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_456 (Array Int Int))) (= (+ c_~s11~0 (select (select (store |c_#memory_int| |c_thread4Thread1of1ForFork0_~#t6~0#1.base| v_ArrVal_456) c_~x~0.base) (+ c_~x~0.offset 4 (* c_~i1~0 4))) c_~s21~0) (+ c_~s22~0 c_~s12~0))) is different from false [2023-11-17 16:06:02,321 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:06:02,322 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 62 treesize of output 43 [2023-11-17 16:06:02,326 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 20 treesize of output 13 [2023-11-17 16:06:02,558 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2023-11-17 16:06:02,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845806167] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:06:02,558 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:06:02,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8, 8] total 30 [2023-11-17 16:06:02,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342595190] [2023-11-17 16:06:02,559 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:06:02,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-17 16:06:02,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:02,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-17 16:06:02,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=811, Unknown=1, NotChecked=58, Total=992 [2023-11-17 16:06:02,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 586 [2023-11-17 16:06:02,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 135 transitions, 804 flow. Second operand has 32 states, 32 states have (on average 215.75) internal successors, (6904), 32 states have internal predecessors, (6904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:02,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:02,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 586 [2023-11-17 16:06:02,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:14,596 INFO L124 PetriNetUnfolderBase]: 94788/122360 cut-off events. [2023-11-17 16:06:14,596 INFO L125 PetriNetUnfolderBase]: For 146199/146251 co-relation queries the response was YES. [2023-11-17 16:06:15,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357900 conditions, 122360 events. 94788/122360 cut-off events. For 146199/146251 co-relation queries the response was YES. Maximal size of possible extension queue 3033. Compared 693525 event pairs, 7727 based on Foata normal form. 52/115529 useless extension candidates. Maximal degree in co-relation 357876. Up to 64755 conditions per place. [2023-11-17 16:06:15,577 INFO L140 encePairwiseOnDemand]: 548/586 looper letters, 463 selfloop transitions, 134 changer transitions 67/679 dead transitions. [2023-11-17 16:06:15,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 679 transitions, 3987 flow [2023-11-17 16:06:15,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-17 16:06:15,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-11-17 16:06:15,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 8459 transitions. [2023-11-17 16:06:15,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3901392860437229 [2023-11-17 16:06:15,590 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 8459 transitions. [2023-11-17 16:06:15,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 8459 transitions. [2023-11-17 16:06:15,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:15,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 8459 transitions. [2023-11-17 16:06:15,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 228.6216216216216) internal successors, (8459), 37 states have internal predecessors, (8459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:15,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 586.0) internal successors, (22268), 38 states have internal predecessors, (22268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:15,625 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 586.0) internal successors, (22268), 38 states have internal predecessors, (22268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:15,625 INFO L175 Difference]: Start difference. First operand has 112 places, 135 transitions, 804 flow. Second operand 37 states and 8459 transitions. [2023-11-17 16:06:15,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 679 transitions, 3987 flow [2023-11-17 16:06:17,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 679 transitions, 3887 flow, removed 30 selfloop flow, removed 6 redundant places. [2023-11-17 16:06:17,234 INFO L231 Difference]: Finished difference. Result has 154 places, 245 transitions, 1854 flow [2023-11-17 16:06:17,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=722, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=1854, PETRI_PLACES=154, PETRI_TRANSITIONS=245} [2023-11-17 16:06:17,235 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 79 predicate places. [2023-11-17 16:06:17,235 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 245 transitions, 1854 flow [2023-11-17 16:06:17,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 215.75) internal successors, (6904), 32 states have internal predecessors, (6904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:17,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:17,237 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:06:17,241 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 16:06:17,441 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 16:06:17,442 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-17 16:06:17,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:17,442 INFO L85 PathProgramCache]: Analyzing trace with hash 94632788, now seen corresponding path program 2 times [2023-11-17 16:06:17,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:17,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180182062] [2023-11-17 16:06:17,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:17,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:17,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:18,714 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:18,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:18,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180182062] [2023-11-17 16:06:18,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180182062] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:06:18,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401034449] [2023-11-17 16:06:18,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:06:18,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:06:18,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:06:18,717 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 16:06:18,719 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 16:06:18,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:06:18,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:06:18,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 38 conjunts are in the unsatisfiable core [2023-11-17 16:06:18,898 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:06:19,540 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 16:06:19,551 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:06:19,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:06:19,655 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:06:19,656 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 27 treesize of output 18 [2023-11-17 16:06:19,790 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-17 16:06:19,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401034449] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:06:19,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:06:19,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7, 6] total 26 [2023-11-17 16:06:19,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303592095] [2023-11-17 16:06:19,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:06:19,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-17 16:06:19,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:19,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-17 16:06:19,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2023-11-17 16:06:19,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 586 [2023-11-17 16:06:19,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 245 transitions, 1854 flow. Second operand has 27 states, 27 states have (on average 216.4814814814815) internal successors, (5845), 27 states have internal predecessors, (5845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:19,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:19,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 586 [2023-11-17 16:06:19,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:37,325 INFO L124 PetriNetUnfolderBase]: 117115/152265 cut-off events. [2023-11-17 16:06:37,326 INFO L125 PetriNetUnfolderBase]: For 366507/366583 co-relation queries the response was YES. [2023-11-17 16:06:38,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 576259 conditions, 152265 events. 117115/152265 cut-off events. For 366507/366583 co-relation queries the response was YES. Maximal size of possible extension queue 3711. Compared 903058 event pairs, 20075 based on Foata normal form. 56/143452 useless extension candidates. Maximal degree in co-relation 576223. Up to 112206 conditions per place. [2023-11-17 16:06:39,336 INFO L140 encePairwiseOnDemand]: 568/586 looper letters, 474 selfloop transitions, 124 changer transitions 43/656 dead transitions. [2023-11-17 16:06:39,352 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 656 transitions, 5329 flow [2023-11-17 16:06:39,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-17 16:06:39,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-17 16:06:39,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 6400 transitions. [2023-11-17 16:06:39,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3900536323744515 [2023-11-17 16:06:39,361 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 6400 transitions. [2023-11-17 16:06:39,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 6400 transitions. [2023-11-17 16:06:39,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:39,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 6400 transitions. [2023-11-17 16:06:39,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 228.57142857142858) internal successors, (6400), 28 states have internal predecessors, (6400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:39,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 586.0) internal successors, (16994), 29 states have internal predecessors, (16994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:39,431 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 586.0) internal successors, (16994), 29 states have internal predecessors, (16994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:39,432 INFO L175 Difference]: Start difference. First operand has 154 places, 245 transitions, 1854 flow. Second operand 28 states and 6400 transitions. [2023-11-17 16:06:39,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 656 transitions, 5329 flow [2023-11-17 16:06:43,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 656 transitions, 4959 flow, removed 170 selfloop flow, removed 10 redundant places. [2023-11-17 16:06:43,407 INFO L231 Difference]: Finished difference. Result has 177 places, 323 transitions, 2615 flow [2023-11-17 16:06:43,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=586, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2615, PETRI_PLACES=177, PETRI_TRANSITIONS=323} [2023-11-17 16:06:43,408 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 102 predicate places. [2023-11-17 16:06:43,408 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 323 transitions, 2615 flow [2023-11-17 16:06:43,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 216.4814814814815) internal successors, (5845), 27 states have internal predecessors, (5845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:06:43,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:43,409 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:06:43,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-17 16:06:43,615 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 16:06:43,615 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 8 more)] === [2023-11-17 16:06:43,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:43,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1391002403, now seen corresponding path program 1 times [2023-11-17 16:06:43,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:43,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125920487] [2023-11-17 16:06:43,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:43,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:44,832 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:44,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:44,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125920487] [2023-11-17 16:06:44,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125920487] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:06:44,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275527303] [2023-11-17 16:06:44,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:44,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:06:44,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:06:44,834 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 16:06:44,836 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 16:06:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:45,003 INFO L262 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 55 conjunts are in the unsatisfiable core [2023-11-17 16:06:45,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:06:45,073 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 19 treesize of output 1 [2023-11-17 16:06:45,113 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 16:06:45,200 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 16:06:45,374 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 16:06:45,480 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 16:06:45,663 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 16:06:45,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 16:06:45,786 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 18 treesize of output 13 [2023-11-17 16:06:45,904 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 19 treesize of output 7 [2023-11-17 16:06:45,944 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:45,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:06:46,144 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_599 (Array Int Int)) (v_ArrVal_598 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_thread4Thread1of1ForFork0_~#t5~0#1.base| v_ArrVal_598))) (= (+ c_~s22~0 c_~s12~0 (select (select (store .cse0 |c_thread4Thread1of1ForFork0_~#t6~0#1.base| v_ArrVal_599) c_~x~0.base) (+ c_~x~0.offset 4 (* c_~i2~0 4)))) (+ c_~s11~0 (select (select .cse0 c_~x~0.base) (+ c_~x~0.offset 4 (* c_~i1~0 4))) c_~s21~0)))) is different from false