/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 08:13:59,653 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 08:13:59,724 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 08:13:59,728 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 08:13:59,728 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 08:13:59,747 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 08:13:59,748 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 08:13:59,748 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 08:13:59,749 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 08:13:59,753 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 08:13:59,753 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 08:13:59,753 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 08:13:59,753 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 08:13:59,755 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 08:13:59,755 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 08:13:59,755 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 08:13:59,755 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 08:13:59,756 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 08:13:59,756 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 08:13:59,756 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 08:13:59,756 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 08:13:59,757 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 08:13:59,757 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 08:13:59,758 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 08:13:59,758 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 08:13:59,758 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 08:13:59,758 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 08:13:59,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 08:13:59,759 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 08:13:59,759 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 08:13:59,760 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 08:13:59,760 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 08:13:59,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 08:13:59,761 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 08:13:59,761 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 08:13:59,761 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 08:14:00,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 08:14:00,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 08:14:00,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 08:14:00,086 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 08:14:00,086 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 08:14:00,087 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c [2023-08-24 08:14:01,242 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 08:14:01,441 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 08:14:01,442 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-1.wvr.c [2023-08-24 08:14:01,449 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b79f655fa/45cf31101d6e4b4cab7b598ca890b9f3/FLAG9b2f89214 [2023-08-24 08:14:01,462 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b79f655fa/45cf31101d6e4b4cab7b598ca890b9f3 [2023-08-24 08:14:01,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 08:14:01,465 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 08:14:01,466 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 08:14:01,466 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 08:14:01,468 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 08:14:01,469 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 08:14:01" (1/1) ... [2023-08-24 08:14:01,470 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cc0339b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:14:01, skipping insertion in model container [2023-08-24 08:14:01,470 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 08:14:01" (1/1) ... [2023-08-24 08:14:01,494 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 08:14:01,633 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-misc-1.wvr.c[2755,2768] [2023-08-24 08:14:01,643 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 08:14:01,651 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 08:14:01,668 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-misc-1.wvr.c[2755,2768] [2023-08-24 08:14:01,671 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 08:14:01,682 INFO L206 MainTranslator]: Completed translation [2023-08-24 08:14:01,683 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:14:01 WrapperNode [2023-08-24 08:14:01,683 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 08:14:01,684 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 08:14:01,684 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 08:14:01,684 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 08:14:01,689 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:14:01" (1/1) ... [2023-08-24 08:14:01,695 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:14:01" (1/1) ... [2023-08-24 08:14:01,723 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 17, calls inlined = 31, statements flattened = 288 [2023-08-24 08:14:01,724 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 08:14:01,724 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 08:14:01,724 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 08:14:01,724 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 08:14:01,731 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:14:01" (1/1) ... [2023-08-24 08:14:01,732 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:14:01" (1/1) ... [2023-08-24 08:14:01,735 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:14:01" (1/1) ... [2023-08-24 08:14:01,735 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:14:01" (1/1) ... [2023-08-24 08:14:01,763 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:14:01" (1/1) ... [2023-08-24 08:14:01,771 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:14:01" (1/1) ... [2023-08-24 08:14:01,772 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:14:01" (1/1) ... [2023-08-24 08:14:01,774 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:14:01" (1/1) ... [2023-08-24 08:14:01,777 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 08:14:01,777 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 08:14:01,778 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 08:14:01,778 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 08:14:01,778 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:14:01" (1/1) ... [2023-08-24 08:14:01,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 08:14:01,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:14:01,806 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-24 08:14:01,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-24 08:14:01,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 08:14:01,834 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 08:14:01,834 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 08:14:01,834 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 08:14:01,834 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 08:14:01,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 08:14:01,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 08:14:01,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 08:14:01,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 08:14:01,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 08:14:01,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 08:14:01,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 08:14:01,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 08:14:01,836 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 08:14:01,927 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 08:14:01,928 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 08:14:02,333 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 08:14:02,342 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 08:14:02,343 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-24 08:14:02,345 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 08:14:02 BoogieIcfgContainer [2023-08-24 08:14:02,345 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 08:14:02,347 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 08:14:02,347 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 08:14:02,349 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 08:14:02,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 08:14:01" (1/3) ... [2023-08-24 08:14:02,350 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45c383c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 08:14:02, skipping insertion in model container [2023-08-24 08:14:02,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:14:01" (2/3) ... [2023-08-24 08:14:02,350 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45c383c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 08:14:02, skipping insertion in model container [2023-08-24 08:14:02,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 08:14:02" (3/3) ... [2023-08-24 08:14:02,352 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-1.wvr.c [2023-08-24 08:14:02,366 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 08:14:02,366 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 08:14:02,366 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 08:14:02,500 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-24 08:14:02,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 326 places, 347 transitions, 710 flow [2023-08-24 08:14:02,690 INFO L124 PetriNetUnfolderBase]: 28/345 cut-off events. [2023-08-24 08:14:02,690 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 08:14:02,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 345 events. 28/345 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 769 event pairs, 0 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 223. Up to 2 conditions per place. [2023-08-24 08:14:02,701 INFO L82 GeneralOperation]: Start removeDead. Operand has 326 places, 347 transitions, 710 flow [2023-08-24 08:14:02,714 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 316 places, 337 transitions, 686 flow [2023-08-24 08:14:02,717 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 08:14:02,730 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 316 places, 337 transitions, 686 flow [2023-08-24 08:14:02,733 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 316 places, 337 transitions, 686 flow [2023-08-24 08:14:02,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 316 places, 337 transitions, 686 flow [2023-08-24 08:14:02,801 INFO L124 PetriNetUnfolderBase]: 28/337 cut-off events. [2023-08-24 08:14:02,801 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 08:14:02,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 337 events. 28/337 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 768 event pairs, 0 based on Foata normal form. 0/309 useless extension candidates. Maximal degree in co-relation 223. Up to 2 conditions per place. [2023-08-24 08:14:02,816 INFO L119 LiptonReduction]: Number of co-enabled transitions 25652 [2023-08-24 08:14:12,394 INFO L134 LiptonReduction]: Checked pairs total: 21888 [2023-08-24 08:14:12,394 INFO L136 LiptonReduction]: Total number of compositions: 405 [2023-08-24 08:14:12,405 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 08:14:12,410 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@bf256da, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 08:14:12,410 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-24 08:14:12,414 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 08:14:12,414 INFO L124 PetriNetUnfolderBase]: 3/15 cut-off events. [2023-08-24 08:14:12,415 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 08:14:12,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:14:12,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:14:12,416 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:14:12,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:14:12,420 INFO L85 PathProgramCache]: Analyzing trace with hash 675713075, now seen corresponding path program 1 times [2023-08-24 08:14:12,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:14:12,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795035654] [2023-08-24 08:14:12,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:14:12,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:14:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:14:13,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:14:13,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:14:13,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795035654] [2023-08-24 08:14:13,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795035654] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:14:13,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:14:13,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 08:14:13,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595182922] [2023-08-24 08:14:13,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:14:13,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 08:14:13,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:14:13,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 08:14:13,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 08:14:13,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 752 [2023-08-24 08:14:13,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 16 transitions, 44 flow. Second operand has 5 states, 5 states have (on average 295.4) internal successors, (1477), 5 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:13,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:14:13,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 752 [2023-08-24 08:14:13,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:14:13,347 INFO L124 PetriNetUnfolderBase]: 99/168 cut-off events. [2023-08-24 08:14:13,347 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-08-24 08:14:13,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 168 events. 99/168 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 483 event pairs, 15 based on Foata normal form. 1/120 useless extension candidates. Maximal degree in co-relation 294. Up to 91 conditions per place. [2023-08-24 08:14:13,349 INFO L140 encePairwiseOnDemand]: 746/752 looper letters, 32 selfloop transitions, 10 changer transitions 1/43 dead transitions. [2023-08-24 08:14:13,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 43 transitions, 199 flow [2023-08-24 08:14:13,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 08:14:13,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 08:14:13,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1509 transitions. [2023-08-24 08:14:13,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40132978723404256 [2023-08-24 08:14:13,372 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1509 transitions. [2023-08-24 08:14:13,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1509 transitions. [2023-08-24 08:14:13,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:14:13,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1509 transitions. [2023-08-24 08:14:13,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 301.8) internal successors, (1509), 5 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:13,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 752.0) internal successors, (4512), 6 states have internal predecessors, (4512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:13,396 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 752.0) internal successors, (4512), 6 states have internal predecessors, (4512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:13,397 INFO L175 Difference]: Start difference. First operand has 20 places, 16 transitions, 44 flow. Second operand 5 states and 1509 transitions. [2023-08-24 08:14:13,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 43 transitions, 199 flow [2023-08-24 08:14:13,401 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 43 transitions, 181 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-24 08:14:13,403 INFO L231 Difference]: Finished difference. Result has 23 places, 25 transitions, 99 flow [2023-08-24 08:14:13,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=99, PETRI_PLACES=23, PETRI_TRANSITIONS=25} [2023-08-24 08:14:13,407 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 3 predicate places. [2023-08-24 08:14:13,407 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 25 transitions, 99 flow [2023-08-24 08:14:13,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 295.4) internal successors, (1477), 5 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:13,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:14:13,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:14:13,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 08:14:13,409 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:14:13,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:14:13,417 INFO L85 PathProgramCache]: Analyzing trace with hash -524597385, now seen corresponding path program 1 times [2023-08-24 08:14:13,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:14:13,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807780771] [2023-08-24 08:14:13,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:14:13,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:14:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:14:13,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:14:13,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:14:13,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807780771] [2023-08-24 08:14:13,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807780771] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:14:13,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:14:13,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 08:14:13,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082604700] [2023-08-24 08:14:13,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:14:13,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 08:14:13,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:14:13,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 08:14:13,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 08:14:13,574 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 752 [2023-08-24 08:14:13,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 25 transitions, 99 flow. Second operand has 4 states, 4 states have (on average 295.25) internal successors, (1181), 4 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:13,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:14:13,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 752 [2023-08-24 08:14:13,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:14:13,671 INFO L124 PetriNetUnfolderBase]: 148/255 cut-off events. [2023-08-24 08:14:13,671 INFO L125 PetriNetUnfolderBase]: For 147/147 co-relation queries the response was YES. [2023-08-24 08:14:13,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 777 conditions, 255 events. 148/255 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 820 event pairs, 71 based on Foata normal form. 16/259 useless extension candidates. Maximal degree in co-relation 415. Up to 147 conditions per place. [2023-08-24 08:14:13,672 INFO L140 encePairwiseOnDemand]: 747/752 looper letters, 35 selfloop transitions, 6 changer transitions 0/41 dead transitions. [2023-08-24 08:14:13,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 41 transitions, 240 flow [2023-08-24 08:14:13,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 08:14:13,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 08:14:13,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1197 transitions. [2023-08-24 08:14:13,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39793882978723405 [2023-08-24 08:14:13,677 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1197 transitions. [2023-08-24 08:14:13,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1197 transitions. [2023-08-24 08:14:13,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:14:13,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1197 transitions. [2023-08-24 08:14:13,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 299.25) internal successors, (1197), 4 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:13,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 752.0) internal successors, (3760), 5 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:13,687 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 752.0) internal successors, (3760), 5 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:13,687 INFO L175 Difference]: Start difference. First operand has 23 places, 25 transitions, 99 flow. Second operand 4 states and 1197 transitions. [2023-08-24 08:14:13,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 41 transitions, 240 flow [2023-08-24 08:14:13,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 41 transitions, 238 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-24 08:14:13,691 INFO L231 Difference]: Finished difference. Result has 29 places, 29 transitions, 153 flow [2023-08-24 08:14:13,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=29, PETRI_TRANSITIONS=29} [2023-08-24 08:14:13,691 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 9 predicate places. [2023-08-24 08:14:13,692 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 153 flow [2023-08-24 08:14:13,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 295.25) internal successors, (1181), 4 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:13,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:14:13,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:14:13,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 08:14:13,694 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:14:13,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:14:13,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1881181259, now seen corresponding path program 1 times [2023-08-24 08:14:13,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:14:13,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92749285] [2023-08-24 08:14:13,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:14:13,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:14:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:14:13,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:14:13,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:14:13,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92749285] [2023-08-24 08:14:13,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92749285] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:14:13,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:14:13,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 08:14:13,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952920813] [2023-08-24 08:14:13,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:14:13,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 08:14:13,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:14:13,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 08:14:13,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 08:14:13,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 297 out of 752 [2023-08-24 08:14:13,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 300.5) internal successors, (1202), 4 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:13,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:14:13,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 297 of 752 [2023-08-24 08:14:13,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:14:13,940 INFO L124 PetriNetUnfolderBase]: 154/283 cut-off events. [2023-08-24 08:14:13,940 INFO L125 PetriNetUnfolderBase]: For 420/420 co-relation queries the response was YES. [2023-08-24 08:14:13,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927 conditions, 283 events. 154/283 cut-off events. For 420/420 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1027 event pairs, 12 based on Foata normal form. 28/311 useless extension candidates. Maximal degree in co-relation 608. Up to 130 conditions per place. [2023-08-24 08:14:13,942 INFO L140 encePairwiseOnDemand]: 748/752 looper letters, 42 selfloop transitions, 7 changer transitions 1/50 dead transitions. [2023-08-24 08:14:13,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 50 transitions, 332 flow [2023-08-24 08:14:13,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 08:14:13,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 08:14:13,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1224 transitions. [2023-08-24 08:14:13,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40691489361702127 [2023-08-24 08:14:13,945 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1224 transitions. [2023-08-24 08:14:13,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1224 transitions. [2023-08-24 08:14:13,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:14:13,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1224 transitions. [2023-08-24 08:14:13,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:13,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 752.0) internal successors, (3760), 5 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:13,955 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 752.0) internal successors, (3760), 5 states have internal predecessors, (3760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:13,955 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 153 flow. Second operand 4 states and 1224 transitions. [2023-08-24 08:14:13,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 50 transitions, 332 flow [2023-08-24 08:14:13,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 50 transitions, 328 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-24 08:14:13,961 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 199 flow [2023-08-24 08:14:13,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=199, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2023-08-24 08:14:13,962 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 14 predicate places. [2023-08-24 08:14:13,965 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 199 flow [2023-08-24 08:14:13,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 300.5) internal successors, (1202), 4 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:13,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:14:13,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:14:13,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 08:14:13,967 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:14:13,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:14:13,967 INFO L85 PathProgramCache]: Analyzing trace with hash 825745086, now seen corresponding path program 1 times [2023-08-24 08:14:13,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:14:13,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242451139] [2023-08-24 08:14:13,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:14:13,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:14:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:14:14,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 08:14:14,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:14:14,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242451139] [2023-08-24 08:14:14,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242451139] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:14:14,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347261503] [2023-08-24 08:14:14,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:14:14,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:14:14,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:14:14,236 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:14:14,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 08:14:14,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:14:14,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 08:14:14,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:14:14,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 08:14:14,469 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:14:14,510 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 08:14:14,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347261503] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 08:14:14,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 08:14:14,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 9 [2023-08-24 08:14:14,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921689647] [2023-08-24 08:14:14,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:14:14,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 08:14:14,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:14:14,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 08:14:14,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-08-24 08:14:14,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 752 [2023-08-24 08:14:14,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 199 flow. Second operand has 5 states, 5 states have (on average 294.8) internal successors, (1474), 5 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:14,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:14:14,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 752 [2023-08-24 08:14:14,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:14:14,638 INFO L124 PetriNetUnfolderBase]: 149/290 cut-off events. [2023-08-24 08:14:14,638 INFO L125 PetriNetUnfolderBase]: For 387/387 co-relation queries the response was YES. [2023-08-24 08:14:14,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1041 conditions, 290 events. 149/290 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1121 event pairs, 45 based on Foata normal form. 12/302 useless extension candidates. Maximal degree in co-relation 694. Up to 99 conditions per place. [2023-08-24 08:14:14,640 INFO L140 encePairwiseOnDemand]: 746/752 looper letters, 44 selfloop transitions, 14 changer transitions 2/60 dead transitions. [2023-08-24 08:14:14,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 60 transitions, 452 flow [2023-08-24 08:14:14,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 08:14:14,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 08:14:14,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1792 transitions. [2023-08-24 08:14:14,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3971631205673759 [2023-08-24 08:14:14,646 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1792 transitions. [2023-08-24 08:14:14,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1792 transitions. [2023-08-24 08:14:14,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:14:14,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1792 transitions. [2023-08-24 08:14:14,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 298.6666666666667) internal successors, (1792), 6 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:14,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 752.0) internal successors, (5264), 7 states have internal predecessors, (5264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:14,659 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 752.0) internal successors, (5264), 7 states have internal predecessors, (5264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:14,659 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 199 flow. Second operand 6 states and 1792 transitions. [2023-08-24 08:14:14,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 60 transitions, 452 flow [2023-08-24 08:14:14,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 60 transitions, 444 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 08:14:14,664 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 269 flow [2023-08-24 08:14:14,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=269, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2023-08-24 08:14:14,666 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 20 predicate places. [2023-08-24 08:14:14,666 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 269 flow [2023-08-24 08:14:14,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 294.8) internal successors, (1474), 5 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:14,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:14:14,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:14:14,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-24 08:14:14,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:14:14,873 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:14:14,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:14:14,874 INFO L85 PathProgramCache]: Analyzing trace with hash 934576503, now seen corresponding path program 2 times [2023-08-24 08:14:14,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:14:14,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874227170] [2023-08-24 08:14:14,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:14:14,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:14:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:14:15,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:14:15,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:14:15,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874227170] [2023-08-24 08:14:15,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874227170] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:14:15,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:14:15,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 08:14:15,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713979586] [2023-08-24 08:14:15,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:14:15,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 08:14:15,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:14:15,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 08:14:15,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 08:14:15,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 752 [2023-08-24 08:14:15,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 269 flow. Second operand has 5 states, 5 states have (on average 262.8) internal successors, (1314), 5 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:15,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:14:15,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 752 [2023-08-24 08:14:15,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:14:15,150 INFO L124 PetriNetUnfolderBase]: 113/212 cut-off events. [2023-08-24 08:14:15,150 INFO L125 PetriNetUnfolderBase]: For 477/477 co-relation queries the response was YES. [2023-08-24 08:14:15,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 894 conditions, 212 events. 113/212 cut-off events. For 477/477 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 657 event pairs, 44 based on Foata normal form. 6/218 useless extension candidates. Maximal degree in co-relation 770. Up to 137 conditions per place. [2023-08-24 08:14:15,152 INFO L140 encePairwiseOnDemand]: 746/752 looper letters, 32 selfloop transitions, 5 changer transitions 10/47 dead transitions. [2023-08-24 08:14:15,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 47 transitions, 382 flow [2023-08-24 08:14:15,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 08:14:15,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 08:14:15,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1593 transitions. [2023-08-24 08:14:15,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35305851063829785 [2023-08-24 08:14:15,156 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1593 transitions. [2023-08-24 08:14:15,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1593 transitions. [2023-08-24 08:14:15,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:14:15,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1593 transitions. [2023-08-24 08:14:15,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 265.5) internal successors, (1593), 6 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:15,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 752.0) internal successors, (5264), 7 states have internal predecessors, (5264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:15,167 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 752.0) internal successors, (5264), 7 states have internal predecessors, (5264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:15,168 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 269 flow. Second operand 6 states and 1593 transitions. [2023-08-24 08:14:15,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 47 transitions, 382 flow [2023-08-24 08:14:15,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 47 transitions, 375 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-24 08:14:15,170 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 212 flow [2023-08-24 08:14:15,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2023-08-24 08:14:15,171 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 22 predicate places. [2023-08-24 08:14:15,171 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 212 flow [2023-08-24 08:14:15,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 262.8) internal successors, (1314), 5 states have internal predecessors, (1314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:15,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:14:15,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:14:15,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 08:14:15,172 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:14:15,172 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:14:15,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1881811962, now seen corresponding path program 1 times [2023-08-24 08:14:15,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:14:15,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845462867] [2023-08-24 08:14:15,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:14:15,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:14:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:14:15,301 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 08:14:15,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:14:15,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845462867] [2023-08-24 08:14:15,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845462867] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:14:15,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1532465326] [2023-08-24 08:14:15,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:14:15,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:14:15,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:14:15,306 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:14:15,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 08:14:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:14:15,398 INFO L262 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 08:14:15,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:14:15,458 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 08:14:15,459 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:14:15,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 08:14:15,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1532465326] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 08:14:15,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 08:14:15,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2023-08-24 08:14:15,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014285292] [2023-08-24 08:14:15,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:14:15,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 08:14:15,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:14:15,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 08:14:15,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-08-24 08:14:15,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 752 [2023-08-24 08:14:15,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 212 flow. Second operand has 5 states, 5 states have (on average 295.0) internal successors, (1475), 5 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:15,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:14:15,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 752 [2023-08-24 08:14:15,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:14:15,592 INFO L124 PetriNetUnfolderBase]: 93/156 cut-off events. [2023-08-24 08:14:15,592 INFO L125 PetriNetUnfolderBase]: For 351/351 co-relation queries the response was YES. [2023-08-24 08:14:15,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 691 conditions, 156 events. 93/156 cut-off events. For 351/351 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 389 event pairs, 18 based on Foata normal form. 2/158 useless extension candidates. Maximal degree in co-relation 658. Up to 98 conditions per place. [2023-08-24 08:14:15,594 INFO L140 encePairwiseOnDemand]: 747/752 looper letters, 32 selfloop transitions, 7 changer transitions 0/39 dead transitions. [2023-08-24 08:14:15,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 39 transitions, 332 flow [2023-08-24 08:14:15,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 08:14:15,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 08:14:15,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1485 transitions. [2023-08-24 08:14:15,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3949468085106383 [2023-08-24 08:14:15,599 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1485 transitions. [2023-08-24 08:14:15,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1485 transitions. [2023-08-24 08:14:15,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:14:15,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1485 transitions. [2023-08-24 08:14:15,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 297.0) internal successors, (1485), 5 states have internal predecessors, (1485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:15,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 752.0) internal successors, (4512), 6 states have internal predecessors, (4512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:15,609 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 752.0) internal successors, (4512), 6 states have internal predecessors, (4512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:15,609 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 212 flow. Second operand 5 states and 1485 transitions. [2023-08-24 08:14:15,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 39 transitions, 332 flow [2023-08-24 08:14:15,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 39 transitions, 285 flow, removed 8 selfloop flow, removed 8 redundant places. [2023-08-24 08:14:15,612 INFO L231 Difference]: Finished difference. Result has 38 places, 31 transitions, 190 flow [2023-08-24 08:14:15,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=190, PETRI_PLACES=38, PETRI_TRANSITIONS=31} [2023-08-24 08:14:15,614 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 18 predicate places. [2023-08-24 08:14:15,614 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 31 transitions, 190 flow [2023-08-24 08:14:15,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 295.0) internal successors, (1475), 5 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:15,615 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:14:15,615 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:14:15,623 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-24 08:14:15,823 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 [2023-08-24 08:14:15,823 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:14:15,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:14:15,824 INFO L85 PathProgramCache]: Analyzing trace with hash -2146516422, now seen corresponding path program 1 times [2023-08-24 08:14:15,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:14:15,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229554722] [2023-08-24 08:14:15,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:14:15,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:14:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:14:17,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 08:14:17,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:14:17,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229554722] [2023-08-24 08:14:17,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229554722] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:14:17,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1823240558] [2023-08-24 08:14:17,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:14:17,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:14:17,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:14:17,485 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:14:17,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-24 08:14:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:14:17,589 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 53 conjunts are in the unsatisfiable core [2023-08-24 08:14:17,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:14:17,638 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-24 08:14:17,675 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 08:14:17,746 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 08:14:17,976 INFO L351 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 139 treesize of output 107 [2023-08-24 08:14:18,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:14:18,059 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:14:19,005 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 08:14:19,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1823240558] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:14:19,006 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:14:19,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 20 [2023-08-24 08:14:19,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952352668] [2023-08-24 08:14:19,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:14:19,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-24 08:14:19,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:14:19,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-24 08:14:19,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=341, Unknown=3, NotChecked=0, Total=420 [2023-08-24 08:14:19,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 752 [2023-08-24 08:14:19,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 190 flow. Second operand has 21 states, 21 states have (on average 252.14285714285714) internal successors, (5295), 21 states have internal predecessors, (5295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:19,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:14:19,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 752 [2023-08-24 08:14:19,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:14:19,588 INFO L124 PetriNetUnfolderBase]: 125/213 cut-off events. [2023-08-24 08:14:19,588 INFO L125 PetriNetUnfolderBase]: For 330/330 co-relation queries the response was YES. [2023-08-24 08:14:19,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 896 conditions, 213 events. 125/213 cut-off events. For 330/330 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 621 event pairs, 3 based on Foata normal form. 1/210 useless extension candidates. Maximal degree in co-relation 867. Up to 136 conditions per place. [2023-08-24 08:14:19,590 INFO L140 encePairwiseOnDemand]: 743/752 looper letters, 40 selfloop transitions, 23 changer transitions 4/67 dead transitions. [2023-08-24 08:14:19,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 67 transitions, 485 flow [2023-08-24 08:14:19,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-24 08:14:19,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-24 08:14:19,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2557 transitions. [2023-08-24 08:14:19,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34002659574468086 [2023-08-24 08:14:19,598 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2557 transitions. [2023-08-24 08:14:19,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2557 transitions. [2023-08-24 08:14:19,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:14:19,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2557 transitions. [2023-08-24 08:14:19,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 255.7) internal successors, (2557), 10 states have internal predecessors, (2557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:19,613 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 752.0) internal successors, (8272), 11 states have internal predecessors, (8272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:19,614 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 752.0) internal successors, (8272), 11 states have internal predecessors, (8272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:19,614 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 190 flow. Second operand 10 states and 2557 transitions. [2023-08-24 08:14:19,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 67 transitions, 485 flow [2023-08-24 08:14:19,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 67 transitions, 475 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 08:14:19,617 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 354 flow [2023-08-24 08:14:19,617 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=354, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2023-08-24 08:14:19,618 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 28 predicate places. [2023-08-24 08:14:19,618 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 354 flow [2023-08-24 08:14:19,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 252.14285714285714) internal successors, (5295), 21 states have internal predecessors, (5295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:19,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:14:19,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:14:19,628 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-24 08:14:19,826 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 [2023-08-24 08:14:19,826 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:14:19,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:14:19,826 INFO L85 PathProgramCache]: Analyzing trace with hash -681650910, now seen corresponding path program 2 times [2023-08-24 08:14:19,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:14:19,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654112808] [2023-08-24 08:14:19,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:14:19,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:14:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:14:21,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:14:21,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:14:21,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654112808] [2023-08-24 08:14:21,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654112808] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:14:21,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892733417] [2023-08-24 08:14:21,243 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 08:14:21,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:14:21,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:14:21,244 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:14:21,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-24 08:14:21,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 08:14:21,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:14:21,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 47 conjunts are in the unsatisfiable core [2023-08-24 08:14:21,356 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:14:21,682 INFO L351 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 133 treesize of output 101 [2023-08-24 08:14:21,797 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:14:21,797 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:14:22,462 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 08:14:22,463 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 253 treesize of output 221 [2023-08-24 08:14:22,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 08:14:22,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892733417] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:14:22,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:14:22,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 6] total 20 [2023-08-24 08:14:22,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634358566] [2023-08-24 08:14:22,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:14:22,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-24 08:14:22,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:14:22,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-24 08:14:22,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2023-08-24 08:14:22,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 752 [2023-08-24 08:14:22,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 354 flow. Second operand has 21 states, 21 states have (on average 245.04761904761904) internal successors, (5146), 21 states have internal predecessors, (5146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:22,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:14:22,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 752 [2023-08-24 08:14:22,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:14:23,587 INFO L124 PetriNetUnfolderBase]: 172/305 cut-off events. [2023-08-24 08:14:23,587 INFO L125 PetriNetUnfolderBase]: For 709/709 co-relation queries the response was YES. [2023-08-24 08:14:23,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1492 conditions, 305 events. 172/305 cut-off events. For 709/709 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1057 event pairs, 6 based on Foata normal form. 1/302 useless extension candidates. Maximal degree in co-relation 1359. Up to 141 conditions per place. [2023-08-24 08:14:23,590 INFO L140 encePairwiseOnDemand]: 743/752 looper letters, 59 selfloop transitions, 39 changer transitions 5/103 dead transitions. [2023-08-24 08:14:23,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 103 transitions, 878 flow [2023-08-24 08:14:23,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-24 08:14:23,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-24 08:14:23,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4466 transitions. [2023-08-24 08:14:23,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32993498817966904 [2023-08-24 08:14:23,602 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4466 transitions. [2023-08-24 08:14:23,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4466 transitions. [2023-08-24 08:14:23,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:14:23,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4466 transitions. [2023-08-24 08:14:23,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 248.11111111111111) internal successors, (4466), 18 states have internal predecessors, (4466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:23,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 752.0) internal successors, (14288), 19 states have internal predecessors, (14288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:23,629 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 752.0) internal successors, (14288), 19 states have internal predecessors, (14288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:23,629 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 354 flow. Second operand 18 states and 4466 transitions. [2023-08-24 08:14:23,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 103 transitions, 878 flow [2023-08-24 08:14:23,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 103 transitions, 829 flow, removed 19 selfloop flow, removed 3 redundant places. [2023-08-24 08:14:23,635 INFO L231 Difference]: Finished difference. Result has 68 places, 60 transitions, 583 flow [2023-08-24 08:14:23,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=583, PETRI_PLACES=68, PETRI_TRANSITIONS=60} [2023-08-24 08:14:23,635 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 48 predicate places. [2023-08-24 08:14:23,635 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 60 transitions, 583 flow [2023-08-24 08:14:23,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 245.04761904761904) internal successors, (5146), 21 states have internal predecessors, (5146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:23,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:14:23,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:14:23,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-24 08:14:23,846 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 [2023-08-24 08:14:23,846 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:14:23,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:14:23,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1130216880, now seen corresponding path program 3 times [2023-08-24 08:14:23,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:14:23,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163112812] [2023-08-24 08:14:23,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:14:23,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:14:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:14:25,359 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:14:25,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:14:25,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163112812] [2023-08-24 08:14:25,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163112812] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:14:25,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228971845] [2023-08-24 08:14:25,360 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 08:14:25,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:14:25,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:14:25,361 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:14:25,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-24 08:14:25,464 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-24 08:14:25,464 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:14:25,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 59 conjunts are in the unsatisfiable core [2023-08-24 08:14:25,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:14:25,509 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-24 08:14:25,563 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 08:14:25,644 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 08:14:25,870 INFO L351 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 133 treesize of output 101 [2023-08-24 08:14:26,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:14:26,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:14:26,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 08:14:26,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228971845] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:14:26,956 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:14:26,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 23 [2023-08-24 08:14:26,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588971309] [2023-08-24 08:14:26,956 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:14:26,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-24 08:14:26,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:14:26,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-24 08:14:26,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=456, Unknown=3, NotChecked=0, Total=552 [2023-08-24 08:14:26,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 752 [2023-08-24 08:14:26,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 60 transitions, 583 flow. Second operand has 24 states, 24 states have (on average 238.91666666666666) internal successors, (5734), 24 states have internal predecessors, (5734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:26,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:14:26,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 752 [2023-08-24 08:14:26,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:14:30,112 INFO L124 PetriNetUnfolderBase]: 193/350 cut-off events. [2023-08-24 08:14:30,112 INFO L125 PetriNetUnfolderBase]: For 1199/1199 co-relation queries the response was YES. [2023-08-24 08:14:30,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1872 conditions, 350 events. 193/350 cut-off events. For 1199/1199 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1297 event pairs, 6 based on Foata normal form. 1/347 useless extension candidates. Maximal degree in co-relation 1839. Up to 152 conditions per place. [2023-08-24 08:14:30,115 INFO L140 encePairwiseOnDemand]: 743/752 looper letters, 58 selfloop transitions, 44 changer transitions 5/107 dead transitions. [2023-08-24 08:14:30,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 107 transitions, 1021 flow [2023-08-24 08:14:30,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-24 08:14:30,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-24 08:14:30,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3880 transitions. [2023-08-24 08:14:30,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3224734042553192 [2023-08-24 08:14:30,125 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3880 transitions. [2023-08-24 08:14:30,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3880 transitions. [2023-08-24 08:14:30,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:14:30,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3880 transitions. [2023-08-24 08:14:30,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 242.5) internal successors, (3880), 16 states have internal predecessors, (3880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:30,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 752.0) internal successors, (12784), 17 states have internal predecessors, (12784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:30,147 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 752.0) internal successors, (12784), 17 states have internal predecessors, (12784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:30,147 INFO L175 Difference]: Start difference. First operand has 68 places, 60 transitions, 583 flow. Second operand 16 states and 3880 transitions. [2023-08-24 08:14:30,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 107 transitions, 1021 flow [2023-08-24 08:14:30,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 107 transitions, 907 flow, removed 26 selfloop flow, removed 10 redundant places. [2023-08-24 08:14:30,154 INFO L231 Difference]: Finished difference. Result has 75 places, 66 transitions, 647 flow [2023-08-24 08:14:30,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=647, PETRI_PLACES=75, PETRI_TRANSITIONS=66} [2023-08-24 08:14:30,155 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 55 predicate places. [2023-08-24 08:14:30,155 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 66 transitions, 647 flow [2023-08-24 08:14:30,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 238.91666666666666) internal successors, (5734), 24 states have internal predecessors, (5734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:30,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:14:30,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:14:30,168 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-24 08:14:30,368 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 [2023-08-24 08:14:30,368 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:14:30,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:14:30,369 INFO L85 PathProgramCache]: Analyzing trace with hash 162952116, now seen corresponding path program 4 times [2023-08-24 08:14:30,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:14:30,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037233543] [2023-08-24 08:14:30,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:14:30,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:14:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:14:31,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:14:31,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:14:31,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037233543] [2023-08-24 08:14:31,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037233543] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:14:31,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547437466] [2023-08-24 08:14:31,825 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 08:14:31,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:14:31,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:14:31,826 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:14:31,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-24 08:14:31,938 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 08:14:31,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:14:31,940 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 57 conjunts are in the unsatisfiable core [2023-08-24 08:14:31,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:14:31,983 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-24 08:14:32,031 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 08:14:32,157 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 08:14:32,403 INFO L351 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 123 treesize of output 103 [2023-08-24 08:14:32,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:14:32,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:14:33,304 WARN L839 $PredicateComparison]: unable to prove that (or (let ((.cse3 (+ c_~A~0.offset (* c_~j~0 4))) (.cse2 (+ c_~A~0.offset (* c_~i~0 4)))) (and (or (< 2147483647 (+ c_~bag1~0 c_~sum1~0)) (< (+ c_~bag1~0 c_~sum1~0 2147483648) 0) (forall ((v_ArrVal_244 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_244) c_~A~0.base))) (let ((.cse0 (select .cse1 .cse3))) (or (< (+ c_~bag2~0 .cse0 2147483648) 0) (< 2147483647 (+ c_~bag2~0 .cse0)) (= (+ c_~bag1~0 c_~sum1~0 (select .cse1 .cse2)) (+ c_~bag2~0 .cse0 c_~sum2~0))))))) (forall ((v_ArrVal_244 (Array Int Int))) (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_244) c_~A~0.base))) (let ((.cse5 (select .cse6 .cse2)) (.cse4 (select .cse6 .cse3))) (or (< (+ c_~bag2~0 .cse4 2147483648) 0) (< 2147483647 (+ c_~bag1~0 .cse5)) (< 2147483647 (+ c_~bag2~0 .cse4)) (< (+ c_~bag1~0 .cse5 2147483648) 0) (= (+ c_~bag1~0 c_~sum1~0 .cse5) (+ c_~bag2~0 .cse4 c_~sum2~0)))))))) (<= c_~N~0 c_~j~0)) is different from false [2023-08-24 08:14:33,353 WARN L839 $PredicateComparison]: unable to prove that (or (let ((.cse3 (+ c_~A~0.offset (* c_~j~0 4))) (.cse2 (+ c_~A~0.offset (* c_~i~0 4)))) (and (or (< 2147483647 (+ c_~bag1~0 c_~sum1~0)) (< (+ c_~bag1~0 c_~sum1~0 2147483648) 0) (forall ((v_ArrVal_244 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_244) c_~A~0.base))) (let ((.cse0 (select .cse1 .cse3))) (or (< (+ c_~bag2~0 .cse0 2147483648) 0) (< 2147483647 (+ c_~bag2~0 .cse0)) (= (+ c_~bag1~0 c_~sum1~0 (select .cse1 .cse2)) (+ c_~bag2~0 .cse0 c_~sum2~0))))))) (forall ((v_ArrVal_244 (Array Int Int))) (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_244) c_~A~0.base))) (let ((.cse5 (select .cse6 .cse2)) (.cse4 (select .cse6 .cse3))) (or (< (+ c_~bag2~0 .cse4 2147483648) 0) (< 2147483647 (+ c_~bag1~0 .cse5)) (< 2147483647 (+ c_~bag2~0 .cse4)) (< (+ c_~bag1~0 .cse5 2147483648) 0) (= (+ c_~bag1~0 c_~sum1~0 .cse5) (+ c_~bag2~0 .cse4 c_~sum2~0)))))))) (<= c_~N~0 c_~i~0) (<= c_~N~0 c_~j~0)) is different from false [2023-08-24 08:14:33,414 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-24 08:14:33,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547437466] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:14:33,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:14:33,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 24 [2023-08-24 08:14:33,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969622884] [2023-08-24 08:14:33,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:14:33,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-24 08:14:33,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:14:33,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-24 08:14:33,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=432, Unknown=2, NotChecked=86, Total=600 [2023-08-24 08:14:33,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 752 [2023-08-24 08:14:33,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 66 transitions, 647 flow. Second operand has 25 states, 25 states have (on average 244.72) internal successors, (6118), 25 states have internal predecessors, (6118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:33,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:14:33,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 752 [2023-08-24 08:14:33,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:14:35,054 INFO L124 PetriNetUnfolderBase]: 337/596 cut-off events. [2023-08-24 08:14:35,054 INFO L125 PetriNetUnfolderBase]: For 2215/2215 co-relation queries the response was YES. [2023-08-24 08:14:35,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3316 conditions, 596 events. 337/596 cut-off events. For 2215/2215 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2568 event pairs, 10 based on Foata normal form. 2/598 useless extension candidates. Maximal degree in co-relation 3282. Up to 313 conditions per place. [2023-08-24 08:14:35,060 INFO L140 encePairwiseOnDemand]: 742/752 looper letters, 95 selfloop transitions, 81 changer transitions 7/183 dead transitions. [2023-08-24 08:14:35,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 183 transitions, 1877 flow [2023-08-24 08:14:35,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-24 08:14:35,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-24 08:14:35,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 6445 transitions. [2023-08-24 08:14:35,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3296337970540098 [2023-08-24 08:14:35,073 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 6445 transitions. [2023-08-24 08:14:35,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 6445 transitions. [2023-08-24 08:14:35,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:14:35,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 6445 transitions. [2023-08-24 08:14:35,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 247.8846153846154) internal successors, (6445), 26 states have internal predecessors, (6445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:35,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 752.0) internal successors, (20304), 27 states have internal predecessors, (20304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:35,104 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 752.0) internal successors, (20304), 27 states have internal predecessors, (20304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:35,105 INFO L175 Difference]: Start difference. First operand has 75 places, 66 transitions, 647 flow. Second operand 26 states and 6445 transitions. [2023-08-24 08:14:35,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 183 transitions, 1877 flow [2023-08-24 08:14:35,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 183 transitions, 1668 flow, removed 42 selfloop flow, removed 12 redundant places. [2023-08-24 08:14:35,118 INFO L231 Difference]: Finished difference. Result has 96 places, 122 transitions, 1358 flow [2023-08-24 08:14:35,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1358, PETRI_PLACES=96, PETRI_TRANSITIONS=122} [2023-08-24 08:14:35,119 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 76 predicate places. [2023-08-24 08:14:35,119 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 122 transitions, 1358 flow [2023-08-24 08:14:35,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 244.72) internal successors, (6118), 25 states have internal predecessors, (6118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:35,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:14:35,120 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:14:35,129 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-24 08:14:35,327 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 [2023-08-24 08:14:35,328 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:14:35,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:14:35,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1853217076, now seen corresponding path program 5 times [2023-08-24 08:14:35,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:14:35,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508996752] [2023-08-24 08:14:35,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:14:35,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:14:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:14:37,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:14:37,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:14:37,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508996752] [2023-08-24 08:14:37,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508996752] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:14:37,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988388530] [2023-08-24 08:14:37,198 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 08:14:37,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:14:37,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:14:37,199 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:14:37,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-24 08:14:37,303 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 08:14:37,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:14:37,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 60 conjunts are in the unsatisfiable core [2023-08-24 08:14:37,307 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:14:37,342 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-24 08:14:37,402 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 08:14:37,472 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 08:14:37,700 INFO L351 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 123 treesize of output 103 [2023-08-24 08:14:37,852 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:14:37,852 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:14:38,839 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 08:14:38,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988388530] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:14:38,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:14:38,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 22 [2023-08-24 08:14:38,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095400884] [2023-08-24 08:14:38,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:14:38,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-08-24 08:14:38,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:14:38,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-08-24 08:14:38,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=398, Unknown=1, NotChecked=0, Total=506 [2023-08-24 08:14:38,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 752 [2023-08-24 08:14:38,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 122 transitions, 1358 flow. Second operand has 23 states, 23 states have (on average 245.0) internal successors, (5635), 23 states have internal predecessors, (5635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:38,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:14:38,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 752 [2023-08-24 08:14:38,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:14:40,823 INFO L124 PetriNetUnfolderBase]: 451/794 cut-off events. [2023-08-24 08:14:40,823 INFO L125 PetriNetUnfolderBase]: For 3844/3844 co-relation queries the response was YES. [2023-08-24 08:14:40,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4855 conditions, 794 events. 451/794 cut-off events. For 3844/3844 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3587 event pairs, 5 based on Foata normal form. 6/800 useless extension candidates. Maximal degree in co-relation 4716. Up to 277 conditions per place. [2023-08-24 08:14:40,831 INFO L140 encePairwiseOnDemand]: 742/752 looper letters, 81 selfloop transitions, 152 changer transitions 15/248 dead transitions. [2023-08-24 08:14:40,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 248 transitions, 2860 flow [2023-08-24 08:14:40,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-24 08:14:40,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-24 08:14:40,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 6951 transitions. [2023-08-24 08:14:40,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33011968085106386 [2023-08-24 08:14:40,844 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 6951 transitions. [2023-08-24 08:14:40,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 6951 transitions. [2023-08-24 08:14:40,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:14:40,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 6951 transitions. [2023-08-24 08:14:40,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 248.25) internal successors, (6951), 28 states have internal predecessors, (6951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:40,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 752.0) internal successors, (21808), 29 states have internal predecessors, (21808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:40,876 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 752.0) internal successors, (21808), 29 states have internal predecessors, (21808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:40,876 INFO L175 Difference]: Start difference. First operand has 96 places, 122 transitions, 1358 flow. Second operand 28 states and 6951 transitions. [2023-08-24 08:14:40,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 248 transitions, 2860 flow [2023-08-24 08:14:40,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 248 transitions, 2680 flow, removed 64 selfloop flow, removed 4 redundant places. [2023-08-24 08:14:40,911 INFO L231 Difference]: Finished difference. Result has 125 places, 187 transitions, 2422 flow [2023-08-24 08:14:40,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=1239, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2422, PETRI_PLACES=125, PETRI_TRANSITIONS=187} [2023-08-24 08:14:40,912 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 105 predicate places. [2023-08-24 08:14:40,912 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 187 transitions, 2422 flow [2023-08-24 08:14:40,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 245.0) internal successors, (5635), 23 states have internal predecessors, (5635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:40,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:14:40,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:14:40,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-24 08:14:41,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:14:41,121 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:14:41,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:14:41,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1555391590, now seen corresponding path program 6 times [2023-08-24 08:14:41,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:14:41,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519021234] [2023-08-24 08:14:41,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:14:41,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:14:41,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:14:42,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:14:42,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:14:42,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519021234] [2023-08-24 08:14:42,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519021234] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:14:42,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473376353] [2023-08-24 08:14:42,277 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 08:14:42,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:14:42,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:14:42,278 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:14:42,280 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-24 08:14:42,385 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-24 08:14:42,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:14:42,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 53 conjunts are in the unsatisfiable core [2023-08-24 08:14:42,389 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:14:42,538 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 08:14:42,711 INFO L351 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 114 treesize of output 98 [2023-08-24 08:14:42,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:14:42,825 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:14:43,423 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 08:14:43,424 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 271 treesize of output 215 [2023-08-24 08:14:43,433 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 08:14:43,433 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 186 treesize of output 146 [2023-08-24 08:14:43,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 08:14:43,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473376353] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:14:43,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:14:43,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 23 [2023-08-24 08:14:43,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11688457] [2023-08-24 08:14:43,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:14:43,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-24 08:14:43,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:14:43,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-24 08:14:43,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2023-08-24 08:14:43,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 752 [2023-08-24 08:14:43,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 187 transitions, 2422 flow. Second operand has 24 states, 24 states have (on average 247.83333333333334) internal successors, (5948), 24 states have internal predecessors, (5948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:43,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:14:43,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 752 [2023-08-24 08:14:43,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:14:45,102 INFO L124 PetriNetUnfolderBase]: 515/920 cut-off events. [2023-08-24 08:14:45,102 INFO L125 PetriNetUnfolderBase]: For 6635/6635 co-relation queries the response was YES. [2023-08-24 08:14:45,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6245 conditions, 920 events. 515/920 cut-off events. For 6635/6635 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4331 event pairs, 10 based on Foata normal form. 20/940 useless extension candidates. Maximal degree in co-relation 6066. Up to 364 conditions per place. [2023-08-24 08:14:45,112 INFO L140 encePairwiseOnDemand]: 743/752 looper letters, 112 selfloop transitions, 163 changer transitions 27/302 dead transitions. [2023-08-24 08:14:45,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 302 transitions, 4280 flow [2023-08-24 08:14:45,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-24 08:14:45,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-24 08:14:45,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 6282 transitions. [2023-08-24 08:14:45,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33414893617021274 [2023-08-24 08:14:45,120 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 6282 transitions. [2023-08-24 08:14:45,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 6282 transitions. [2023-08-24 08:14:45,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:14:45,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 6282 transitions. [2023-08-24 08:14:45,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 251.28) internal successors, (6282), 25 states have internal predecessors, (6282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:45,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 752.0) internal successors, (19552), 26 states have internal predecessors, (19552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:45,141 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 752.0) internal successors, (19552), 26 states have internal predecessors, (19552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:45,141 INFO L175 Difference]: Start difference. First operand has 125 places, 187 transitions, 2422 flow. Second operand 25 states and 6282 transitions. [2023-08-24 08:14:45,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 302 transitions, 4280 flow [2023-08-24 08:14:45,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 302 transitions, 3613 flow, removed 277 selfloop flow, removed 9 redundant places. [2023-08-24 08:14:45,182 INFO L231 Difference]: Finished difference. Result has 147 places, 227 transitions, 2994 flow [2023-08-24 08:14:45,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=1972, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2994, PETRI_PLACES=147, PETRI_TRANSITIONS=227} [2023-08-24 08:14:45,182 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 127 predicate places. [2023-08-24 08:14:45,182 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 227 transitions, 2994 flow [2023-08-24 08:14:45,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 247.83333333333334) internal successors, (5948), 24 states have internal predecessors, (5948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:45,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:14:45,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:14:45,192 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-24 08:14:45,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-24 08:14:45,389 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:14:45,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:14:45,389 INFO L85 PathProgramCache]: Analyzing trace with hash 302984904, now seen corresponding path program 7 times [2023-08-24 08:14:45,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:14:45,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551972581] [2023-08-24 08:14:45,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:14:45,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:14:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:14:46,527 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:14:46,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:14:46,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551972581] [2023-08-24 08:14:46,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551972581] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:14:46,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434804907] [2023-08-24 08:14:46,528 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 08:14:46,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:14:46,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:14:46,529 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:14:46,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-24 08:14:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:14:46,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 66 conjunts are in the unsatisfiable core [2023-08-24 08:14:46,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:14:46,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 08:14:46,942 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2023-08-24 08:14:47,035 INFO L351 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 126 treesize of output 98 [2023-08-24 08:14:47,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:14:47,110 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:14:47,834 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 08:14:47,834 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 153 treesize of output 105 [2023-08-24 08:14:47,842 INFO L351 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 51 treesize of output 33 [2023-08-24 08:14:47,931 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 08:14:47,932 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 153 treesize of output 105 [2023-08-24 08:14:47,940 INFO L351 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 51 treesize of output 33 [2023-08-24 08:14:48,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:14:48,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434804907] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:14:48,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:14:48,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 26 [2023-08-24 08:14:48,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438495508] [2023-08-24 08:14:48,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:14:48,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-24 08:14:48,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:14:48,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-24 08:14:48,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=648, Unknown=1, NotChecked=0, Total=756 [2023-08-24 08:14:48,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 752 [2023-08-24 08:14:48,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 227 transitions, 2994 flow. Second operand has 28 states, 28 states have (on average 238.64285714285714) internal successors, (6682), 28 states have internal predecessors, (6682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:48,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:14:48,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 752 [2023-08-24 08:14:48,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:14:57,683 INFO L124 PetriNetUnfolderBase]: 502/887 cut-off events. [2023-08-24 08:14:57,683 INFO L125 PetriNetUnfolderBase]: For 4969/4969 co-relation queries the response was YES. [2023-08-24 08:14:57,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5910 conditions, 887 events. 502/887 cut-off events. For 4969/4969 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4123 event pairs, 4 based on Foata normal form. 1/888 useless extension candidates. Maximal degree in co-relation 5831. Up to 437 conditions per place. [2023-08-24 08:14:57,691 INFO L140 encePairwiseOnDemand]: 743/752 looper letters, 143 selfloop transitions, 128 changer transitions 5/276 dead transitions. [2023-08-24 08:14:57,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 276 transitions, 3871 flow [2023-08-24 08:14:57,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-24 08:14:57,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-24 08:14:57,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4352 transitions. [2023-08-24 08:14:57,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3215130023640662 [2023-08-24 08:14:57,697 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4352 transitions. [2023-08-24 08:14:57,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4352 transitions. [2023-08-24 08:14:57,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:14:57,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4352 transitions. [2023-08-24 08:14:57,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 241.77777777777777) internal successors, (4352), 18 states have internal predecessors, (4352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:57,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 752.0) internal successors, (14288), 19 states have internal predecessors, (14288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:57,713 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 752.0) internal successors, (14288), 19 states have internal predecessors, (14288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:57,713 INFO L175 Difference]: Start difference. First operand has 147 places, 227 transitions, 2994 flow. Second operand 18 states and 4352 transitions. [2023-08-24 08:14:57,713 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 276 transitions, 3871 flow [2023-08-24 08:14:57,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 276 transitions, 3640 flow, removed 86 selfloop flow, removed 12 redundant places. [2023-08-24 08:14:57,756 INFO L231 Difference]: Finished difference. Result has 152 places, 234 transitions, 3179 flow [2023-08-24 08:14:57,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=2779, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3179, PETRI_PLACES=152, PETRI_TRANSITIONS=234} [2023-08-24 08:14:57,757 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 132 predicate places. [2023-08-24 08:14:57,757 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 234 transitions, 3179 flow [2023-08-24 08:14:57,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 238.64285714285714) internal successors, (6682), 28 states have internal predecessors, (6682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:57,758 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:14:57,758 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:14:57,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-24 08:14:57,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-24 08:14:57,963 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:14:57,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:14:57,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1917814186, now seen corresponding path program 8 times [2023-08-24 08:14:57,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:14:57,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869220854] [2023-08-24 08:14:57,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:14:57,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:14:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:14:59,157 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:14:59,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:14:59,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869220854] [2023-08-24 08:14:59,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869220854] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:14:59,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45591217] [2023-08-24 08:14:59,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 08:14:59,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:14:59,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:14:59,158 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:14:59,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-24 08:14:59,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 08:14:59,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:14:59,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 59 conjunts are in the unsatisfiable core [2023-08-24 08:14:59,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:14:59,279 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-24 08:14:59,309 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 08:14:59,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 08:14:59,438 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-24 08:14:59,524 INFO L351 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 133 treesize of output 101 [2023-08-24 08:14:59,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:14:59,623 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:15:00,289 WARN L839 $PredicateComparison]: unable to prove that (or (<= c_~N~0 0) (and (forall ((v_ArrVal_373 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_373))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< 2147483647 .cse0) (< (+ .cse0 2147483648) 0) (forall ((v_ArrVal_374 (Array Int Int))) (let ((.cse1 (select (select (store .cse2 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_374) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (= .cse0 .cse1) (< 2147483647 .cse1) (< (+ .cse1 2147483648) 0)))))))) (forall ((v_ArrVal_373 (Array Int Int)) (v_ArrVal_374 (Array Int Int))) (let ((.cse3 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_373))) (let ((.cse4 (select (select (store .cse3 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_374) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (= (select (select .cse3 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) .cse4) (< 2147483647 .cse4) (< (+ .cse4 2147483648) 0)))))) (< 1 c_~N~0)) is different from false [2023-08-24 08:15:00,311 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 08:15:00,312 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 61 [2023-08-24 08:15:00,316 INFO L351 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 228 treesize of output 204 [2023-08-24 08:15:00,324 INFO L351 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 69 treesize of output 63 [2023-08-24 08:15:00,328 INFO L351 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 128 treesize of output 116 [2023-08-24 08:15:00,361 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-24 08:15:00,361 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 1 [2023-08-24 08:15:00,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-24 08:15:00,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45591217] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:15:00,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:15:00,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 23 [2023-08-24 08:15:00,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186344155] [2023-08-24 08:15:00,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:15:00,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-24 08:15:00,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:15:00,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-24 08:15:00,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=451, Unknown=2, NotChecked=44, Total=600 [2023-08-24 08:15:00,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 752 [2023-08-24 08:15:00,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 234 transitions, 3179 flow. Second operand has 25 states, 25 states have (on average 244.72) internal successors, (6118), 25 states have internal predecessors, (6118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:15:00,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:15:00,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 752 [2023-08-24 08:15:00,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:15:01,457 INFO L124 PetriNetUnfolderBase]: 504/897 cut-off events. [2023-08-24 08:15:01,458 INFO L125 PetriNetUnfolderBase]: For 5111/5111 co-relation queries the response was YES. [2023-08-24 08:15:01,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6068 conditions, 897 events. 504/897 cut-off events. For 5111/5111 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4172 event pairs, 8 based on Foata normal form. 1/898 useless extension candidates. Maximal degree in co-relation 5996. Up to 497 conditions per place. [2023-08-24 08:15:01,467 INFO L140 encePairwiseOnDemand]: 744/752 looper letters, 136 selfloop transitions, 127 changer transitions 4/267 dead transitions. [2023-08-24 08:15:01,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 267 transitions, 3923 flow [2023-08-24 08:15:01,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-24 08:15:01,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-24 08:15:01,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 3234 transitions. [2023-08-24 08:15:01,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.330810147299509 [2023-08-24 08:15:01,471 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 3234 transitions. [2023-08-24 08:15:01,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 3234 transitions. [2023-08-24 08:15:01,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:15:01,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 3234 transitions. [2023-08-24 08:15:01,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 248.76923076923077) internal successors, (3234), 13 states have internal predecessors, (3234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:15:01,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 752.0) internal successors, (10528), 14 states have internal predecessors, (10528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:15:01,484 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 752.0) internal successors, (10528), 14 states have internal predecessors, (10528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:15:01,484 INFO L175 Difference]: Start difference. First operand has 152 places, 234 transitions, 3179 flow. Second operand 13 states and 3234 transitions. [2023-08-24 08:15:01,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 267 transitions, 3923 flow [2023-08-24 08:15:01,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 267 transitions, 3733 flow, removed 17 selfloop flow, removed 11 redundant places. [2023-08-24 08:15:01,526 INFO L231 Difference]: Finished difference. Result has 153 places, 237 transitions, 3306 flow [2023-08-24 08:15:01,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=2997, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3306, PETRI_PLACES=153, PETRI_TRANSITIONS=237} [2023-08-24 08:15:01,527 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 133 predicate places. [2023-08-24 08:15:01,527 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 237 transitions, 3306 flow [2023-08-24 08:15:01,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 244.72) internal successors, (6118), 25 states have internal predecessors, (6118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:15:01,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:15:01,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:15:01,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-24 08:15:01,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-24 08:15:01,733 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:15:01,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:15:01,734 INFO L85 PathProgramCache]: Analyzing trace with hash 532864000, now seen corresponding path program 9 times [2023-08-24 08:15:01,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:15:01,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267456513] [2023-08-24 08:15:01,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:15:01,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:15:01,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:15:02,862 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:15:02,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:15:02,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267456513] [2023-08-24 08:15:02,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267456513] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:15:02,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789711199] [2023-08-24 08:15:02,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 08:15:02,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:15:02,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:15:02,863 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:15:02,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-24 08:15:02,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-24 08:15:02,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:15:02,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 59 conjunts are in the unsatisfiable core [2023-08-24 08:15:02,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:15:02,988 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-24 08:15:03,032 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 08:15:03,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 08:15:03,191 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-24 08:15:03,277 INFO L351 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 133 treesize of output 101 [2023-08-24 08:15:03,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:15:03,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:15:04,125 WARN L839 $PredicateComparison]: unable to prove that (or (and (forall ((v_ArrVal_407 (Array Int Int))) (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_407))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< (+ .cse0 2147483648) 0) (forall ((v_ArrVal_408 (Array Int Int))) (let ((.cse1 (select (select (store .cse2 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_408) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< 2147483647 .cse1) (= .cse0 .cse1) (< (+ .cse1 2147483648) 0)))) (< 2147483647 .cse0))))) (forall ((v_ArrVal_407 (Array Int Int)) (v_ArrVal_408 (Array Int Int))) (let ((.cse4 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_407))) (let ((.cse3 (select (select (store .cse4 |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_408) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|))) (or (< 2147483647 .cse3) (= (select (select .cse4 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) .cse3) (< (+ .cse3 2147483648) 0)))))) (<= c_~N~0 0) (< 1 c_~N~0)) is different from false [2023-08-24 08:15:04,146 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 08:15:04,146 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 61 [2023-08-24 08:15:04,150 INFO L351 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 228 treesize of output 204 [2023-08-24 08:15:04,161 INFO L351 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 69 treesize of output 63 [2023-08-24 08:15:04,165 INFO L351 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 128 treesize of output 116 [2023-08-24 08:15:04,187 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-24 08:15:04,187 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 143 treesize of output 1 [2023-08-24 08:15:04,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-24 08:15:04,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789711199] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:15:04,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:15:04,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 24 [2023-08-24 08:15:04,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276294545] [2023-08-24 08:15:04,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:15:04,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-24 08:15:04,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:15:04,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-24 08:15:04,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=501, Unknown=2, NotChecked=46, Total=650 [2023-08-24 08:15:04,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 752 [2023-08-24 08:15:04,217 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 237 transitions, 3306 flow. Second operand has 26 states, 26 states have (on average 244.76923076923077) internal successors, (6364), 26 states have internal predecessors, (6364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:15:04,217 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:15:04,217 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 752 [2023-08-24 08:15:04,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:15:05,257 INFO L124 PetriNetUnfolderBase]: 523/931 cut-off events. [2023-08-24 08:15:05,257 INFO L125 PetriNetUnfolderBase]: For 5885/5885 co-relation queries the response was YES. [2023-08-24 08:15:05,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6414 conditions, 931 events. 523/931 cut-off events. For 5885/5885 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4376 event pairs, 8 based on Foata normal form. 1/932 useless extension candidates. Maximal degree in co-relation 6261. Up to 489 conditions per place. [2023-08-24 08:15:05,266 INFO L140 encePairwiseOnDemand]: 744/752 looper letters, 139 selfloop transitions, 134 changer transitions 5/278 dead transitions. [2023-08-24 08:15:05,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 278 transitions, 4149 flow [2023-08-24 08:15:05,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-24 08:15:05,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-24 08:15:05,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 3726 transitions. [2023-08-24 08:15:05,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3303191489361702 [2023-08-24 08:15:05,270 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 3726 transitions. [2023-08-24 08:15:05,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 3726 transitions. [2023-08-24 08:15:05,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:15:05,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 3726 transitions. [2023-08-24 08:15:05,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 248.4) internal successors, (3726), 15 states have internal predecessors, (3726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:15:05,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 752.0) internal successors, (12032), 16 states have internal predecessors, (12032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:15:05,283 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 752.0) internal successors, (12032), 16 states have internal predecessors, (12032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:15:05,283 INFO L175 Difference]: Start difference. First operand has 153 places, 237 transitions, 3306 flow. Second operand 15 states and 3726 transitions. [2023-08-24 08:15:05,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 278 transitions, 4149 flow [2023-08-24 08:15:05,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 278 transitions, 3994 flow, removed 3 selfloop flow, removed 11 redundant places. [2023-08-24 08:15:05,324 INFO L231 Difference]: Finished difference. Result has 159 places, 243 transitions, 3544 flow [2023-08-24 08:15:05,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=3153, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3544, PETRI_PLACES=159, PETRI_TRANSITIONS=243} [2023-08-24 08:15:05,325 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 139 predicate places. [2023-08-24 08:15:05,325 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 243 transitions, 3544 flow [2023-08-24 08:15:05,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 244.76923076923077) internal successors, (6364), 26 states have internal predecessors, (6364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:15:05,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:15:05,326 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:15:05,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-24 08:15:05,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-24 08:15:05,534 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:15:05,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:15:05,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1978711662, now seen corresponding path program 10 times [2023-08-24 08:15:05,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:15:05,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895238245] [2023-08-24 08:15:05,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:15:05,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:15:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:15:05,690 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 08:15:05,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:15:05,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895238245] [2023-08-24 08:15:05,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895238245] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:15:05,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845092466] [2023-08-24 08:15:05,690 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 08:15:05,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:15:05,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:15:05,691 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:15:05,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-24 08:15:05,795 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 08:15:05,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:15:05,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-24 08:15:05,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:15:05,941 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 08:15:05,941 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:15:06,141 INFO L322 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-24 08:15:06,142 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 344 treesize of output 248 [2023-08-24 08:15:06,267 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 08:15:06,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845092466] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:15:06,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:15:06,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-08-24 08:15:06,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17640484] [2023-08-24 08:15:06,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:15:06,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-24 08:15:06,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:15:06,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-24 08:15:06,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-08-24 08:15:06,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 264 out of 752 [2023-08-24 08:15:06,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 243 transitions, 3544 flow. Second operand has 13 states, 13 states have (on average 266.7692307692308) internal successors, (3468), 13 states have internal predecessors, (3468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:15:06,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:15:06,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 264 of 752 [2023-08-24 08:15:06,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:15:06,581 INFO L124 PetriNetUnfolderBase]: 577/1089 cut-off events. [2023-08-24 08:15:06,581 INFO L125 PetriNetUnfolderBase]: For 7778/7778 co-relation queries the response was YES. [2023-08-24 08:15:06,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7960 conditions, 1089 events. 577/1089 cut-off events. For 7778/7778 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5718 event pairs, 132 based on Foata normal form. 48/1137 useless extension candidates. Maximal degree in co-relation 7864. Up to 462 conditions per place. [2023-08-24 08:15:06,594 INFO L140 encePairwiseOnDemand]: 747/752 looper letters, 232 selfloop transitions, 63 changer transitions 9/304 dead transitions. [2023-08-24 08:15:06,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 304 transitions, 5074 flow [2023-08-24 08:15:06,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 08:15:06,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 08:15:06,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2163 transitions. [2023-08-24 08:15:06,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3595412234042553 [2023-08-24 08:15:06,597 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2163 transitions. [2023-08-24 08:15:06,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2163 transitions. [2023-08-24 08:15:06,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:15:06,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2163 transitions. [2023-08-24 08:15:06,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 270.375) internal successors, (2163), 8 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:15:06,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 752.0) internal successors, (6768), 9 states have internal predecessors, (6768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:15:06,603 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 752.0) internal successors, (6768), 9 states have internal predecessors, (6768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:15:06,603 INFO L175 Difference]: Start difference. First operand has 159 places, 243 transitions, 3544 flow. Second operand 8 states and 2163 transitions. [2023-08-24 08:15:06,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 304 transitions, 5074 flow [2023-08-24 08:15:06,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 304 transitions, 4756 flow, removed 53 selfloop flow, removed 12 redundant places. [2023-08-24 08:15:06,661 INFO L231 Difference]: Finished difference. Result has 150 places, 236 transitions, 3525 flow [2023-08-24 08:15:06,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=3077, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3525, PETRI_PLACES=150, PETRI_TRANSITIONS=236} [2023-08-24 08:15:06,662 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 130 predicate places. [2023-08-24 08:15:06,662 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 236 transitions, 3525 flow [2023-08-24 08:15:06,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 266.7692307692308) internal successors, (3468), 13 states have internal predecessors, (3468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:15:06,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:15:06,663 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:15:06,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-24 08:15:06,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-24 08:15:06,870 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:15:06,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:15:06,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1678855723, now seen corresponding path program 11 times [2023-08-24 08:15:06,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:15:06,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920325087] [2023-08-24 08:15:06,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:15:06,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:15:06,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:15:07,019 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 08:15:07,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:15:07,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920325087] [2023-08-24 08:15:07,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920325087] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:15:07,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385555660] [2023-08-24 08:15:07,020 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 08:15:07,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:15:07,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:15:07,025 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:15:07,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-24 08:15:07,135 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-24 08:15:07,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:15:07,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-24 08:15:07,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:15:07,274 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:15:07,275 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:15:07,396 INFO L351 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 256 treesize of output 200 [2023-08-24 08:15:07,507 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:15:07,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385555660] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:15:07,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:15:07,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-24 08:15:07,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488665652] [2023-08-24 08:15:07,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:15:07,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-24 08:15:07,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:15:07,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-24 08:15:07,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2023-08-24 08:15:07,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 272 out of 752 [2023-08-24 08:15:07,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 236 transitions, 3525 flow. Second operand has 17 states, 17 states have (on average 274.4117647058824) internal successors, (4665), 17 states have internal predecessors, (4665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:15:07,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:15:07,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 272 of 752 [2023-08-24 08:15:07,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:15:08,043 INFO L124 PetriNetUnfolderBase]: 488/902 cut-off events. [2023-08-24 08:15:08,043 INFO L125 PetriNetUnfolderBase]: For 7319/7319 co-relation queries the response was YES. [2023-08-24 08:15:08,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6570 conditions, 902 events. 488/902 cut-off events. For 7319/7319 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4337 event pairs, 39 based on Foata normal form. 65/967 useless extension candidates. Maximal degree in co-relation 6528. Up to 267 conditions per place. [2023-08-24 08:15:08,053 INFO L140 encePairwiseOnDemand]: 744/752 looper letters, 128 selfloop transitions, 156 changer transitions 2/286 dead transitions. [2023-08-24 08:15:08,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 286 transitions, 4447 flow [2023-08-24 08:15:08,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-24 08:15:08,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-24 08:15:08,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 5543 transitions. [2023-08-24 08:15:08,058 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3685505319148936 [2023-08-24 08:15:08,058 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 5543 transitions. [2023-08-24 08:15:08,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 5543 transitions. [2023-08-24 08:15:08,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:15:08,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 5543 transitions. [2023-08-24 08:15:08,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 277.15) internal successors, (5543), 20 states have internal predecessors, (5543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:15:08,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 752.0) internal successors, (15792), 21 states have internal predecessors, (15792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:15:08,073 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 752.0) internal successors, (15792), 21 states have internal predecessors, (15792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:15:08,073 INFO L175 Difference]: Start difference. First operand has 150 places, 236 transitions, 3525 flow. Second operand 20 states and 5543 transitions. [2023-08-24 08:15:08,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 286 transitions, 4447 flow [2023-08-24 08:15:08,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 286 transitions, 4270 flow, removed 62 selfloop flow, removed 11 redundant places. [2023-08-24 08:15:08,118 INFO L231 Difference]: Finished difference. Result has 150 places, 230 transitions, 3834 flow [2023-08-24 08:15:08,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=2764, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3834, PETRI_PLACES=150, PETRI_TRANSITIONS=230} [2023-08-24 08:15:08,118 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 130 predicate places. [2023-08-24 08:15:08,118 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 230 transitions, 3834 flow [2023-08-24 08:15:08,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 274.4117647058824) internal successors, (4665), 17 states have internal predecessors, (4665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:15:08,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:15:08,119 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:15:08,126 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-24 08:15:08,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-24 08:15:08,324 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:15:08,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:15:08,324 INFO L85 PathProgramCache]: Analyzing trace with hash 2069584018, now seen corresponding path program 12 times [2023-08-24 08:15:08,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:15:08,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559243066] [2023-08-24 08:15:08,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:15:08,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:15:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:15:08,481 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 08:15:08,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:15:08,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559243066] [2023-08-24 08:15:08,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559243066] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:15:08,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495435134] [2023-08-24 08:15:08,482 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 08:15:08,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:15:08,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:15:08,483 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:15:08,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-24 08:15:08,690 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-24 08:15:08,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:15:08,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-24 08:15:08,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:15:08,791 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 08:15:08,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:15:08,892 INFO L351 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 209 treesize of output 193 [2023-08-24 08:15:08,953 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 08:15:08,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495435134] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:15:08,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:15:08,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-24 08:15:08,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326720357] [2023-08-24 08:15:08,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:15:08,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 08:15:08,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:15:08,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 08:15:08,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-08-24 08:15:08,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 752 [2023-08-24 08:15:08,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 230 transitions, 3834 flow. Second operand has 12 states, 12 states have (on average 281.5833333333333) internal successors, (3379), 12 states have internal predecessors, (3379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:15:08,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:15:08,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 752 [2023-08-24 08:15:08,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:15:09,161 INFO L124 PetriNetUnfolderBase]: 332/598 cut-off events. [2023-08-24 08:15:09,161 INFO L125 PetriNetUnfolderBase]: For 5624/5624 co-relation queries the response was YES. [2023-08-24 08:15:09,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4497 conditions, 598 events. 332/598 cut-off events. For 5624/5624 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2419 event pairs, 96 based on Foata normal form. 17/615 useless extension candidates. Maximal degree in co-relation 4457. Up to 433 conditions per place. [2023-08-24 08:15:09,167 INFO L140 encePairwiseOnDemand]: 746/752 looper letters, 155 selfloop transitions, 13 changer transitions 21/189 dead transitions. [2023-08-24 08:15:09,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 189 transitions, 3209 flow [2023-08-24 08:15:09,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 08:15:09,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 08:15:09,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1991 transitions. [2023-08-24 08:15:09,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37822948328267475 [2023-08-24 08:15:09,170 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1991 transitions. [2023-08-24 08:15:09,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1991 transitions. [2023-08-24 08:15:09,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:15:09,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1991 transitions. [2023-08-24 08:15:09,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 284.42857142857144) internal successors, (1991), 7 states have internal predecessors, (1991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:15:09,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 752.0) internal successors, (6016), 8 states have internal predecessors, (6016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:15:09,175 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 752.0) internal successors, (6016), 8 states have internal predecessors, (6016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:15:09,175 INFO L175 Difference]: Start difference. First operand has 150 places, 230 transitions, 3834 flow. Second operand 7 states and 1991 transitions. [2023-08-24 08:15:09,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 189 transitions, 3209 flow [2023-08-24 08:15:09,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 189 transitions, 2757 flow, removed 89 selfloop flow, removed 20 redundant places. [2023-08-24 08:15:09,210 INFO L231 Difference]: Finished difference. Result has 131 places, 160 transitions, 2121 flow [2023-08-24 08:15:09,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=2283, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2121, PETRI_PLACES=131, PETRI_TRANSITIONS=160} [2023-08-24 08:15:09,211 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 111 predicate places. [2023-08-24 08:15:09,211 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 160 transitions, 2121 flow [2023-08-24 08:15:09,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 281.5833333333333) internal successors, (3379), 12 states have internal predecessors, (3379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:15:09,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:15:09,212 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:15:09,219 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-08-24 08:15:09,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:15:09,417 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:15:09,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:15:09,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1265640305, now seen corresponding path program 13 times [2023-08-24 08:15:09,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:15:09,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398190877] [2023-08-24 08:15:09,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:15:09,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:15:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:15:12,819 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:15:12,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:15:12,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398190877] [2023-08-24 08:15:12,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398190877] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:15:12,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518151284] [2023-08-24 08:15:12,820 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 08:15:12,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:15:12,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:15:12,821 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:15:12,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-24 08:15:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:15:12,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 70 conjunts are in the unsatisfiable core [2023-08-24 08:15:12,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:15:14,169 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 08:15:14,169 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 212 treesize of output 148 [2023-08-24 08:15:14,300 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:15:14,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:15:18,464 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 08:15:18,465 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1852 treesize of output 754 [2023-08-24 08:15:27,635 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 08:15:27,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518151284] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:15:27,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:15:27,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 10] total 33 [2023-08-24 08:15:27,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245973674] [2023-08-24 08:15:27,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:15:27,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-24 08:15:27,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:15:27,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-24 08:15:27,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=973, Unknown=0, NotChecked=0, Total=1122 [2023-08-24 08:15:27,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 752 [2023-08-24 08:15:27,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 160 transitions, 2121 flow. Second operand has 34 states, 34 states have (on average 232.6764705882353) internal successors, (7911), 34 states have internal predecessors, (7911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:15:27,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:15:27,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 752 [2023-08-24 08:15:27,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:15:44,021 INFO L124 PetriNetUnfolderBase]: 632/1091 cut-off events. [2023-08-24 08:15:44,021 INFO L125 PetriNetUnfolderBase]: For 6925/6925 co-relation queries the response was YES. [2023-08-24 08:15:44,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7300 conditions, 1091 events. 632/1091 cut-off events. For 6925/6925 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5161 event pairs, 2 based on Foata normal form. 1/1092 useless extension candidates. Maximal degree in co-relation 7267. Up to 455 conditions per place. [2023-08-24 08:15:44,030 INFO L140 encePairwiseOnDemand]: 742/752 looper letters, 214 selfloop transitions, 212 changer transitions 5/431 dead transitions. [2023-08-24 08:15:44,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 431 transitions, 5633 flow [2023-08-24 08:15:44,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-24 08:15:44,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-24 08:15:44,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 11326 transitions. [2023-08-24 08:15:44,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3137743794326241 [2023-08-24 08:15:44,039 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 11326 transitions. [2023-08-24 08:15:44,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 11326 transitions. [2023-08-24 08:15:44,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:15:44,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 11326 transitions. [2023-08-24 08:15:44,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 235.95833333333334) internal successors, (11326), 48 states have internal predecessors, (11326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:15:44,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 752.0) internal successors, (36848), 49 states have internal predecessors, (36848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:15:44,078 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 752.0) internal successors, (36848), 49 states have internal predecessors, (36848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:15:44,079 INFO L175 Difference]: Start difference. First operand has 131 places, 160 transitions, 2121 flow. Second operand 48 states and 11326 transitions. [2023-08-24 08:15:44,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 431 transitions, 5633 flow [2023-08-24 08:15:44,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 431 transitions, 5394 flow, removed 31 selfloop flow, removed 12 redundant places. [2023-08-24 08:15:44,126 INFO L231 Difference]: Finished difference. Result has 165 places, 304 transitions, 4600 flow [2023-08-24 08:15:44,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=2010, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=4600, PETRI_PLACES=165, PETRI_TRANSITIONS=304} [2023-08-24 08:15:44,126 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 145 predicate places. [2023-08-24 08:15:44,126 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 304 transitions, 4600 flow [2023-08-24 08:15:44,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 232.6764705882353) internal successors, (7911), 34 states have internal predecessors, (7911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:15:44,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:15:44,128 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:15:44,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-24 08:15:44,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:15:44,328 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:15:44,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:15:44,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1284192309, now seen corresponding path program 14 times [2023-08-24 08:15:44,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:15:44,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968978705] [2023-08-24 08:15:44,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:15:44,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:15:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:15:46,046 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:15:46,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:15:46,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968978705] [2023-08-24 08:15:46,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968978705] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:15:46,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733913474] [2023-08-24 08:15:46,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 08:15:46,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:15:46,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:15:46,047 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:15:46,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-24 08:15:46,164 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 08:15:46,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:15:46,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 66 conjunts are in the unsatisfiable core [2023-08-24 08:15:46,167 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:15:47,245 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 08:15:47,245 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 271 treesize of output 183 [2023-08-24 08:15:47,528 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:15:47,528 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:15:50,474 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 08:15:50,474 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1852 treesize of output 754 [2023-08-24 08:16:05,383 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 08:16:05,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733913474] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:16:05,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:16:05,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 10] total 33 [2023-08-24 08:16:05,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535444392] [2023-08-24 08:16:05,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:16:05,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-24 08:16:05,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:16:05,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-24 08:16:05,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=963, Unknown=0, NotChecked=0, Total=1122 [2023-08-24 08:16:05,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 752 [2023-08-24 08:16:05,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 304 transitions, 4600 flow. Second operand has 34 states, 34 states have (on average 239.6764705882353) internal successors, (8149), 34 states have internal predecessors, (8149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:16:05,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:16:05,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 752 [2023-08-24 08:16:05,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:16:14,025 INFO L124 PetriNetUnfolderBase]: 929/1554 cut-off events. [2023-08-24 08:16:14,025 INFO L125 PetriNetUnfolderBase]: For 11684/11684 co-relation queries the response was YES. [2023-08-24 08:16:14,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11433 conditions, 1554 events. 929/1554 cut-off events. For 11684/11684 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7612 event pairs, 15 based on Foata normal form. 1/1555 useless extension candidates. Maximal degree in co-relation 11392. Up to 748 conditions per place. [2023-08-24 08:16:14,037 INFO L140 encePairwiseOnDemand]: 742/752 looper letters, 225 selfloop transitions, 317 changer transitions 7/549 dead transitions. [2023-08-24 08:16:14,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 549 transitions, 8613 flow [2023-08-24 08:16:14,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-08-24 08:16:14,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-08-24 08:16:14,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 10690 transitions. [2023-08-24 08:16:14,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32307785299806574 [2023-08-24 08:16:14,048 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 10690 transitions. [2023-08-24 08:16:14,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 10690 transitions. [2023-08-24 08:16:14,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:16:14,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 10690 transitions. [2023-08-24 08:16:14,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 242.95454545454547) internal successors, (10690), 44 states have internal predecessors, (10690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:16:14,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 752.0) internal successors, (33840), 45 states have internal predecessors, (33840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:16:14,080 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 752.0) internal successors, (33840), 45 states have internal predecessors, (33840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:16:14,080 INFO L175 Difference]: Start difference. First operand has 165 places, 304 transitions, 4600 flow. Second operand 44 states and 10690 transitions. [2023-08-24 08:16:14,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 549 transitions, 8613 flow [2023-08-24 08:16:14,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 549 transitions, 8266 flow, removed 119 selfloop flow, removed 11 redundant places. [2023-08-24 08:16:14,186 INFO L231 Difference]: Finished difference. Result has 206 places, 443 transitions, 7489 flow [2023-08-24 08:16:14,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=4348, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=7489, PETRI_PLACES=206, PETRI_TRANSITIONS=443} [2023-08-24 08:16:14,188 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 186 predicate places. [2023-08-24 08:16:14,188 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 443 transitions, 7489 flow [2023-08-24 08:16:14,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 239.6764705882353) internal successors, (8149), 34 states have internal predecessors, (8149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:16:14,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:16:14,190 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:16:14,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-24 08:16:14,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:16:14,395 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:16:14,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:16:14,396 INFO L85 PathProgramCache]: Analyzing trace with hash -835626339, now seen corresponding path program 15 times [2023-08-24 08:16:14,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:16:14,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866993190] [2023-08-24 08:16:14,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:16:14,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:16:14,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:16:15,952 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:16:15,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:16:15,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866993190] [2023-08-24 08:16:15,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866993190] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:16:15,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718350033] [2023-08-24 08:16:15,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 08:16:15,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:16:15,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:16:15,954 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:16:15,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-24 08:16:16,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-24 08:16:16,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:16:16,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 81 conjunts are in the unsatisfiable core [2023-08-24 08:16:16,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:16:16,875 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 08:16:16,876 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 286 treesize of output 190 [2023-08-24 08:16:17,213 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:16:17,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:16:20,162 INFO L322 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2023-08-24 08:16:20,163 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 469 treesize of output 201 [2023-08-24 08:16:22,851 INFO L322 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-08-24 08:16:22,852 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 940 treesize of output 1 [2023-08-24 08:16:23,553 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 08:16:23,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718350033] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:16:23,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:16:23,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 10] total 33 [2023-08-24 08:16:23,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758103305] [2023-08-24 08:16:23,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:16:23,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-24 08:16:23,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:16:23,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-24 08:16:23,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2023-08-24 08:16:23,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 752 [2023-08-24 08:16:23,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 443 transitions, 7489 flow. Second operand has 34 states, 34 states have (on average 239.61764705882354) internal successors, (8147), 34 states have internal predecessors, (8147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:16:23,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:16:23,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 752 [2023-08-24 08:16:23,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:16:36,771 INFO L124 PetriNetUnfolderBase]: 1199/2007 cut-off events. [2023-08-24 08:16:36,771 INFO L125 PetriNetUnfolderBase]: For 18020/18020 co-relation queries the response was YES. [2023-08-24 08:16:36,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15935 conditions, 2007 events. 1199/2007 cut-off events. For 18020/18020 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 10450 event pairs, 6 based on Foata normal form. 3/2010 useless extension candidates. Maximal degree in co-relation 15888. Up to 791 conditions per place. [2023-08-24 08:16:36,789 INFO L140 encePairwiseOnDemand]: 742/752 looper letters, 170 selfloop transitions, 538 changer transitions 7/715 dead transitions. [2023-08-24 08:16:36,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 715 transitions, 11950 flow [2023-08-24 08:16:36,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-08-24 08:16:36,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2023-08-24 08:16:36,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 14338 transitions. [2023-08-24 08:16:36,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3231608366390191 [2023-08-24 08:16:36,802 INFO L72 ComplementDD]: Start complementDD. Operand 59 states and 14338 transitions. [2023-08-24 08:16:36,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 14338 transitions. [2023-08-24 08:16:36,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:16:36,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 59 states and 14338 transitions. [2023-08-24 08:16:36,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 60 states, 59 states have (on average 243.01694915254237) internal successors, (14338), 59 states have internal predecessors, (14338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:16:36,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 60 states, 60 states have (on average 752.0) internal successors, (45120), 60 states have internal predecessors, (45120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:16:36,847 INFO L81 ComplementDD]: Finished complementDD. Result has 60 states, 60 states have (on average 752.0) internal successors, (45120), 60 states have internal predecessors, (45120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:16:36,847 INFO L175 Difference]: Start difference. First operand has 206 places, 443 transitions, 7489 flow. Second operand 59 states and 14338 transitions. [2023-08-24 08:16:36,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 715 transitions, 11950 flow [2023-08-24 08:16:37,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 715 transitions, 11480 flow, removed 134 selfloop flow, removed 14 redundant places. [2023-08-24 08:16:37,041 INFO L231 Difference]: Finished difference. Result has 255 places, 601 transitions, 11254 flow [2023-08-24 08:16:37,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=7093, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=397, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=59, PETRI_FLOW=11254, PETRI_PLACES=255, PETRI_TRANSITIONS=601} [2023-08-24 08:16:37,042 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 235 predicate places. [2023-08-24 08:16:37,042 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 601 transitions, 11254 flow [2023-08-24 08:16:37,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 239.61764705882354) internal successors, (8147), 34 states have internal predecessors, (8147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:16:37,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:16:37,043 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:16:37,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-24 08:16:37,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:16:37,249 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:16:37,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:16:37,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1477420387, now seen corresponding path program 16 times [2023-08-24 08:16:37,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:16:37,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035147270] [2023-08-24 08:16:37,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:16:37,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:16:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:16:40,392 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:16:40,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:16:40,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035147270] [2023-08-24 08:16:40,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035147270] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:16:40,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345225055] [2023-08-24 08:16:40,393 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 08:16:40,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:16:40,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:16:40,394 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:16:40,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-24 08:16:40,517 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 08:16:40,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:16:40,519 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 87 conjunts are in the unsatisfiable core [2023-08-24 08:16:40,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:16:40,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 08:16:40,664 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-24 08:16:41,262 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 08:16:41,262 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 226 treesize of output 148 [2023-08-24 08:16:41,412 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 08:16:41,412 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:16:46,391 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse55 (* c_~j~0 4)) (.cse56 (* c_~i~0 4))) (let ((.cse0 (< (+ |c_thread1Thread1of1ForFork0_#t~ret2#1| 2147483648) 0)) (.cse1 (<= c_~N~0 (+ c_~i~0 1))) (.cse13 (< (+ c_~bag2~0 c_~sum2~0 2147483648) 0)) (.cse24 (< 2147483647 (+ c_~bag2~0 c_~sum2~0))) (.cse7 (+ c_~A~0.offset .cse56)) (.cse8 (+ c_~A~0.offset .cse56 4)) (.cse9 (+ c_~A~0.offset .cse55)) (.cse10 (+ c_~A~0.offset .cse55 4)) (.cse11 (< (+ 2 c_~j~0) c_~N~0)) (.cse12 (<= c_~N~0 (+ c_~j~0 1))) (.cse25 (< (+ 2 c_~i~0) c_~N~0)) (.cse26 (< 2147483647 |c_thread1Thread1of1ForFork0_#t~ret2#1|))) (and (or .cse0 .cse1 (and (or (forall ((v_ArrVal_639 (Array Int Int))) (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_639) c_~A~0.base))) (let ((.cse4 (select .cse6 .cse10)) (.cse3 (select .cse6 .cse9)) (.cse5 (select .cse6 .cse8)) (.cse2 (select .cse6 .cse7))) (or (< (+ c_~bag1~0 .cse2 2147483648) 0) (< 2147483647 (+ c_~bag2~0 .cse3 .cse4)) (= (+ c_~bag1~0 c_~sum1~0 .cse5 .cse2) (+ c_~bag2~0 c_~sum2~0 .cse3 .cse4)) (< (+ c_~bag2~0 .cse3 2147483648) 0) (< (+ c_~bag2~0 .cse3 .cse4 2147483648) 0) (< (+ c_~bag1~0 .cse5 .cse2 2147483648) 0) (< 2147483647 (+ c_~bag2~0 .cse3)) (< 2147483647 (+ c_~bag1~0 .cse2)) (< 2147483647 (+ c_~bag1~0 .cse5 .cse2)))))) .cse11 .cse12) (or .cse13 (and (or (forall ((v_ArrVal_639 (Array Int Int))) (let ((.cse18 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_639) c_~A~0.base))) (let ((.cse17 (select .cse18 .cse10)) (.cse15 (select .cse18 .cse8)) (.cse14 (select .cse18 .cse7)) (.cse16 (select .cse18 .cse9))) (or (< (+ c_~bag1~0 .cse14 2147483648) 0) (= (+ c_~bag1~0 c_~sum1~0 .cse15 .cse14) (+ c_~bag2~0 c_~sum2~0 .cse16 .cse17)) (< (+ .cse16 .cse17 2147483648) 0) (< (+ c_~bag2~0 .cse16 2147483648) 0) (< (+ c_~bag1~0 .cse15 .cse14 2147483648) 0) (< 2147483647 (+ c_~bag2~0 .cse16)) (< (+ c_~bag2~0 c_~sum2~0 .cse16 2147483648) 0) (< 2147483647 (+ c_~bag1~0 .cse14)) (< 2147483647 (+ .cse16 .cse17)) (< 2147483647 (+ c_~bag1~0 .cse15 .cse14)) (< 2147483647 (+ c_~bag2~0 c_~sum2~0 .cse16)))))) .cse11 .cse12) (or (forall ((v_ArrVal_639 (Array Int Int))) (let ((.cse23 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_639) c_~A~0.base))) (let ((.cse21 (select .cse23 .cse9)) (.cse22 (select .cse23 .cse10)) (.cse20 (select .cse23 .cse8)) (.cse19 (select .cse23 .cse7))) (or (< (+ c_~bag1~0 .cse19 2147483648) 0) (= (+ c_~bag1~0 c_~sum1~0 .cse20 .cse19) (+ c_~bag2~0 c_~sum2~0 .cse21 .cse22)) (< (+ .cse21 .cse22 2147483648) 0) (< (+ c_~bag1~0 .cse20 .cse19 2147483648) 0) (< 2147483647 (+ c_~bag2~0 .cse21)) (< 2147483647 (+ c_~bag1~0 .cse19)) (< c_~bag2~0 (+ .cse22 1)) (< 2147483647 (+ c_~bag1~0 .cse20 .cse19)))))) .cse11 .cse12)) .cse24)) .cse25 .cse26) (or .cse0 .cse1 (< 2147483647 (+ c_~bag1~0 c_~sum1~0)) (< (+ c_~bag1~0 c_~sum1~0 2147483648) 0) (and (or .cse25 (and (or (forall ((v_ArrVal_639 (Array Int Int))) (let ((.cse31 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_639) c_~A~0.base))) (let ((.cse28 (select .cse31 .cse10)) (.cse27 (select .cse31 .cse9)) (.cse29 (select .cse31 .cse8)) (.cse30 (select .cse31 .cse7))) (or (< 2147483647 (+ c_~bag2~0 .cse27 .cse28)) (= (+ c_~bag1~0 c_~sum1~0 .cse29 .cse30) (+ c_~bag2~0 c_~sum2~0 .cse27 .cse28)) (< (+ .cse29 .cse30 2147483648) 0) (< (+ c_~bag2~0 .cse27 2147483648) 0) (< (+ c_~bag2~0 .cse27 .cse28 2147483648) 0) (< 2147483647 (+ c_~bag2~0 .cse27)) (< |c_thread1Thread1of1ForFork0_#t~ret2#1| (+ .cse29 .cse30 1)))))) .cse11 .cse12) (or (and (or (forall ((v_ArrVal_639 (Array Int Int))) (let ((.cse35 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_639) c_~A~0.base))) (let ((.cse32 (select .cse35 .cse8)) (.cse33 (select .cse35 .cse7)) (.cse34 (select .cse35 .cse9))) (or (= (+ c_~bag1~0 c_~sum1~0 .cse32 .cse33) (+ c_~bag2~0 c_~sum2~0 .cse34 (select .cse35 .cse10))) (< (+ .cse32 .cse33 2147483648) 0) (< (+ c_~bag2~0 .cse34 2147483648) 0) (< 2147483647 (+ c_~bag2~0 .cse34)) (< (+ c_~bag2~0 c_~sum2~0 .cse34 2147483648) 0) (< |c_thread1Thread1of1ForFork0_#t~ret2#1| (+ .cse32 .cse33 1)) (< 2147483647 (+ c_~bag2~0 c_~sum2~0 .cse34)))))) .cse11 .cse12) (or (forall ((v_ArrVal_639 (Array Int Int))) (let ((.cse40 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_639) c_~A~0.base))) (let ((.cse38 (select .cse40 .cse9)) (.cse36 (select .cse40 .cse8)) (.cse37 (select .cse40 .cse7)) (.cse39 (select .cse40 .cse10))) (or (= (+ c_~bag1~0 c_~sum1~0 .cse36 .cse37) (+ c_~bag2~0 c_~sum2~0 .cse38 .cse39)) (< (+ .cse36 .cse37 2147483648) 0) (< 2147483647 (+ c_~bag2~0 .cse38)) (< |c_thread1Thread1of1ForFork0_#t~ret2#1| (+ .cse36 .cse37 1)) (< c_~bag2~0 (+ .cse39 1)))))) .cse11 .cse12)) .cse13 .cse24))) (or (and (or .cse13 .cse24 (and (or (forall ((v_ArrVal_639 (Array Int Int))) (let ((.cse44 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_639) c_~A~0.base))) (let ((.cse42 (select .cse44 .cse8)) (.cse41 (select .cse44 .cse7)) (.cse43 (select .cse44 .cse9))) (or (< (+ c_~bag1~0 c_~sum1~0 .cse41 2147483648) 0) (< 2147483647 (+ c_~bag1~0 c_~sum1~0 .cse41)) (= (+ c_~bag1~0 c_~sum1~0 .cse42 .cse41) (+ c_~bag2~0 c_~sum2~0 .cse43 (select .cse44 .cse10))) (< (+ .cse42 .cse41 2147483648) 0) (< (+ c_~bag2~0 .cse43 2147483648) 0) (< 2147483647 (+ c_~bag2~0 .cse43)) (< (+ c_~bag2~0 c_~sum2~0 .cse43 2147483648) 0) (< 2147483647 (+ .cse42 .cse41)) (< 2147483647 (+ c_~bag2~0 c_~sum2~0 .cse43)))))) .cse11 .cse12) (or (forall ((v_ArrVal_639 (Array Int Int))) (let ((.cse49 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_639) c_~A~0.base))) (let ((.cse46 (select .cse49 .cse8)) (.cse45 (select .cse49 .cse7)) (.cse47 (select .cse49 .cse9)) (.cse48 (select .cse49 .cse10))) (or (< (+ c_~bag1~0 c_~sum1~0 .cse45 2147483648) 0) (< 2147483647 (+ c_~bag1~0 c_~sum1~0 .cse45)) (= (+ c_~bag1~0 c_~sum1~0 .cse46 .cse45) (+ c_~bag2~0 c_~sum2~0 .cse47 .cse48)) (< (+ .cse46 .cse45 2147483648) 0) (< 2147483647 (+ c_~bag2~0 .cse47)) (< c_~bag2~0 (+ .cse48 1)))))) .cse11 .cse12))) (or (forall ((v_ArrVal_639 (Array Int Int))) (let ((.cse54 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_639) c_~A~0.base))) (let ((.cse51 (select .cse54 .cse10)) (.cse50 (select .cse54 .cse9)) (.cse53 (select .cse54 .cse8)) (.cse52 (select .cse54 .cse7))) (or (< 2147483647 (+ c_~bag2~0 .cse50 .cse51)) (< (+ c_~bag1~0 c_~sum1~0 .cse52 2147483648) 0) (< 2147483647 (+ c_~bag1~0 c_~sum1~0 .cse52)) (= (+ c_~bag1~0 c_~sum1~0 .cse53 .cse52) (+ c_~bag2~0 c_~sum2~0 .cse50 .cse51)) (< (+ .cse53 .cse52 2147483648) 0) (< (+ c_~bag2~0 .cse50 2147483648) 0) (< (+ c_~bag2~0 .cse50 .cse51 2147483648) 0) (< 2147483647 (+ c_~bag2~0 .cse50)) (< 2147483647 (+ .cse53 .cse52)))))) .cse11 .cse12)) .cse25)) .cse26)))) is different from false [2023-08-24 08:16:46,800 INFO L322 Elim1Store]: treesize reduction 28, result has 24.3 percent of original size [2023-08-24 08:16:46,800 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 2217 treesize of output 1572 [2023-08-24 08:16:46,876 INFO L322 Elim1Store]: treesize reduction 28, result has 24.3 percent of original size [2023-08-24 08:16:46,876 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1528 treesize of output 1473 [2023-08-24 08:16:46,953 INFO L322 Elim1Store]: treesize reduction 28, result has 24.3 percent of original size [2023-08-24 08:16:46,953 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1460 treesize of output 1381 [2023-08-24 08:16:47,046 INFO L322 Elim1Store]: treesize reduction 28, result has 24.3 percent of original size [2023-08-24 08:16:47,048 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1368 treesize of output 1275 [2023-08-24 08:16:47,137 INFO L322 Elim1Store]: treesize reduction 28, result has 24.3 percent of original size [2023-08-24 08:16:47,138 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1262 treesize of output 1206 [2023-08-24 08:16:47,200 INFO L209 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-08-24 08:16:47,228 INFO L322 Elim1Store]: treesize reduction 28, result has 24.3 percent of original size [2023-08-24 08:16:47,229 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1193 treesize of output 1126 [2023-08-24 08:16:47,318 INFO L322 Elim1Store]: treesize reduction 28, result has 24.3 percent of original size [2023-08-24 08:16:47,318 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1113 treesize of output 1032 [2023-08-24 08:16:48,133 INFO L322 Elim1Store]: treesize reduction 28, result has 24.3 percent of original size [2023-08-24 08:16:48,134 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1395 treesize of output 985 [2023-08-24 08:16:48,198 INFO L322 Elim1Store]: treesize reduction 28, result has 24.3 percent of original size [2023-08-24 08:16:48,198 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 890 treesize of output 785 [2023-08-24 08:16:48,261 INFO L322 Elim1Store]: treesize reduction 28, result has 24.3 percent of original size [2023-08-24 08:16:48,262 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 772 treesize of output 691 [2023-08-24 08:16:48,313 INFO L322 Elim1Store]: treesize reduction 28, result has 24.3 percent of original size [2023-08-24 08:16:48,313 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 678 treesize of output 585 [2023-08-24 08:16:48,936 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 08:16:48,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345225055] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:16:48,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:16:48,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 11] total 35 [2023-08-24 08:16:48,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697983980] [2023-08-24 08:16:48,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:16:48,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-08-24 08:16:48,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:16:48,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-08-24 08:16:48,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=1007, Unknown=1, NotChecked=66, Total=1260 [2023-08-24 08:16:48,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 752 [2023-08-24 08:16:48,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 601 transitions, 11254 flow. Second operand has 36 states, 36 states have (on average 232.58333333333334) internal successors, (8373), 36 states have internal predecessors, (8373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:16:48,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:16:48,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 752 [2023-08-24 08:16:48,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:17:11,728 INFO L124 PetriNetUnfolderBase]: 1477/2472 cut-off events. [2023-08-24 08:17:11,728 INFO L125 PetriNetUnfolderBase]: For 27225/27225 co-relation queries the response was YES. [2023-08-24 08:17:11,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21520 conditions, 2472 events. 1477/2472 cut-off events. For 27225/27225 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 13587 event pairs, 2 based on Foata normal form. 10/2482 useless extension candidates. Maximal degree in co-relation 21469. Up to 998 conditions per place. [2023-08-24 08:17:11,751 INFO L140 encePairwiseOnDemand]: 740/752 looper letters, 171 selfloop transitions, 683 changer transitions 25/879 dead transitions. [2023-08-24 08:17:11,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 879 transitions, 16588 flow [2023-08-24 08:17:11,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-08-24 08:17:11,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-08-24 08:17:11,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 14153 transitions. [2023-08-24 08:17:11,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31367464539007095 [2023-08-24 08:17:11,765 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 14153 transitions. [2023-08-24 08:17:11,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 14153 transitions. [2023-08-24 08:17:11,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:17:11,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 14153 transitions. [2023-08-24 08:17:11,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 235.88333333333333) internal successors, (14153), 60 states have internal predecessors, (14153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:17:11,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 752.0) internal successors, (45872), 61 states have internal predecessors, (45872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:17:11,809 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 752.0) internal successors, (45872), 61 states have internal predecessors, (45872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:17:11,809 INFO L175 Difference]: Start difference. First operand has 255 places, 601 transitions, 11254 flow. Second operand 60 states and 14153 transitions. [2023-08-24 08:17:11,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 879 transitions, 16588 flow [2023-08-24 08:17:12,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 879 transitions, 15789 flow, removed 273 selfloop flow, removed 26 redundant places. [2023-08-24 08:17:12,175 INFO L231 Difference]: Finished difference. Result has 295 places, 757 transitions, 15317 flow [2023-08-24 08:17:12,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=10640, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=601, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=529, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=15317, PETRI_PLACES=295, PETRI_TRANSITIONS=757} [2023-08-24 08:17:12,176 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 275 predicate places. [2023-08-24 08:17:12,176 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 757 transitions, 15317 flow [2023-08-24 08:17:12,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 232.58333333333334) internal successors, (8373), 36 states have internal predecessors, (8373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:17:12,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:17:12,177 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:17:12,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-24 08:17:12,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:17:12,385 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:17:12,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:17:12,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1307180617, now seen corresponding path program 17 times [2023-08-24 08:17:12,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:17:12,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945934206] [2023-08-24 08:17:12,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:17:12,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:17:12,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:17:20,486 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:17:20,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:17:20,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945934206] [2023-08-24 08:17:20,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945934206] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:17:20,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054580806] [2023-08-24 08:17:20,487 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 08:17:20,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:17:20,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:17:20,488 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:17:20,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-24 08:17:20,618 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-24 08:17:20,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:17:20,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 67 conjunts are in the unsatisfiable core [2023-08-24 08:17:20,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:17:21,521 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 08:17:21,522 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 236 treesize of output 180 [2023-08-24 08:17:21,663 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:17:21,664 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:17:25,710 INFO L322 Elim1Store]: treesize reduction 28, result has 24.3 percent of original size [2023-08-24 08:17:25,710 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1696 treesize of output 688 [2023-08-24 08:17:26,730 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 08:17:26,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054580806] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:17:26,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:17:26,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 10] total 33 [2023-08-24 08:17:26,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528068311] [2023-08-24 08:17:26,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:17:26,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-24 08:17:26,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:17:26,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-24 08:17:26,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=947, Unknown=0, NotChecked=0, Total=1122 [2023-08-24 08:17:26,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 752 [2023-08-24 08:17:26,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 757 transitions, 15317 flow. Second operand has 34 states, 34 states have (on average 232.58823529411765) internal successors, (7908), 34 states have internal predecessors, (7908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:17:26,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:17:26,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 752 [2023-08-24 08:17:26,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:17:43,851 INFO L124 PetriNetUnfolderBase]: 1623/2692 cut-off events. [2023-08-24 08:17:43,851 INFO L125 PetriNetUnfolderBase]: For 32202/32202 co-relation queries the response was YES. [2023-08-24 08:17:43,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26157 conditions, 2692 events. 1623/2692 cut-off events. For 32202/32202 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 14916 event pairs, 6 based on Foata normal form. 4/2696 useless extension candidates. Maximal degree in co-relation 26102. Up to 1071 conditions per place. [2023-08-24 08:17:43,878 INFO L140 encePairwiseOnDemand]: 742/752 looper letters, 233 selfloop transitions, 709 changer transitions 8/950 dead transitions. [2023-08-24 08:17:43,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 950 transitions, 20138 flow [2023-08-24 08:17:43,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-08-24 08:17:43,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-08-24 08:17:43,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 11073 transitions. [2023-08-24 08:17:43,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3132922136713445 [2023-08-24 08:17:43,888 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 11073 transitions. [2023-08-24 08:17:43,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 11073 transitions. [2023-08-24 08:17:43,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:17:43,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 11073 transitions. [2023-08-24 08:17:43,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 235.59574468085106) internal successors, (11073), 47 states have internal predecessors, (11073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:17:43,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 752.0) internal successors, (36096), 48 states have internal predecessors, (36096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:17:43,986 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 752.0) internal successors, (36096), 48 states have internal predecessors, (36096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:17:43,986 INFO L175 Difference]: Start difference. First operand has 295 places, 757 transitions, 15317 flow. Second operand 47 states and 11073 transitions. [2023-08-24 08:17:43,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 950 transitions, 20138 flow [2023-08-24 08:17:44,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 950 transitions, 19567 flow, removed 180 selfloop flow, removed 18 redundant places. [2023-08-24 08:17:44,373 INFO L231 Difference]: Finished difference. Result has 323 places, 871 transitions, 18784 flow [2023-08-24 08:17:44,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=14779, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=603, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=18784, PETRI_PLACES=323, PETRI_TRANSITIONS=871} [2023-08-24 08:17:44,374 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 303 predicate places. [2023-08-24 08:17:44,374 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 871 transitions, 18784 flow [2023-08-24 08:17:44,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 232.58823529411765) internal successors, (7908), 34 states have internal predecessors, (7908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:17:44,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:17:44,375 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:17:44,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-24 08:17:44,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:17:44,575 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:17:44,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:17:44,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1243375433, now seen corresponding path program 18 times [2023-08-24 08:17:44,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:17:44,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871203897] [2023-08-24 08:17:44,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:17:44,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:17:44,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:17:46,713 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:17:46,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:17:46,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871203897] [2023-08-24 08:17:46,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871203897] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:17:46,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [179069200] [2023-08-24 08:17:46,713 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 08:17:46,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:17:46,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:17:46,717 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:17:46,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-24 08:17:46,856 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-24 08:17:46,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:17:46,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 80 conjunts are in the unsatisfiable core [2023-08-24 08:17:46,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:17:47,639 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 08:17:47,639 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 231 treesize of output 159 [2023-08-24 08:17:47,751 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:17:47,752 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:17:50,729 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 08:17:50,730 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 501 treesize of output 209 [2023-08-24 08:17:51,952 INFO L322 Elim1Store]: treesize reduction 24, result has 35.1 percent of original size [2023-08-24 08:17:51,952 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 946 treesize of output 334 [2023-08-24 08:17:53,054 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 08:17:53,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [179069200] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:17:53,055 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:17:53,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 10] total 33 [2023-08-24 08:17:53,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234151250] [2023-08-24 08:17:53,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:17:53,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-24 08:17:53,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:17:53,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-24 08:17:53,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=968, Unknown=0, NotChecked=0, Total=1122 [2023-08-24 08:17:53,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 752 [2023-08-24 08:17:53,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 871 transitions, 18784 flow. Second operand has 34 states, 34 states have (on average 232.64705882352942) internal successors, (7910), 34 states have internal predecessors, (7910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:17:53,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:17:53,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 752 [2023-08-24 08:17:53,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:18:05,890 INFO L124 PetriNetUnfolderBase]: 2032/3332 cut-off events. [2023-08-24 08:18:05,890 INFO L125 PetriNetUnfolderBase]: For 40715/40715 co-relation queries the response was YES. [2023-08-24 08:18:05,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34420 conditions, 3332 events. 2032/3332 cut-off events. For 40715/40715 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 19007 event pairs, 66 based on Foata normal form. 1/3333 useless extension candidates. Maximal degree in co-relation 34363. Up to 2070 conditions per place. [2023-08-24 08:18:05,975 INFO L140 encePairwiseOnDemand]: 741/752 looper letters, 690 selfloop transitions, 487 changer transitions 6/1183 dead transitions. [2023-08-24 08:18:05,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 1183 transitions, 26871 flow [2023-08-24 08:18:05,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-08-24 08:18:05,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-08-24 08:18:05,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 10622 transitions. [2023-08-24 08:18:05,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3138888888888889 [2023-08-24 08:18:05,983 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 10622 transitions. [2023-08-24 08:18:05,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 10622 transitions. [2023-08-24 08:18:05,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:18:05,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 10622 transitions. [2023-08-24 08:18:05,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 236.04444444444445) internal successors, (10622), 45 states have internal predecessors, (10622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:18:06,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 752.0) internal successors, (34592), 46 states have internal predecessors, (34592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:18:06,014 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 752.0) internal successors, (34592), 46 states have internal predecessors, (34592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:18:06,014 INFO L175 Difference]: Start difference. First operand has 323 places, 871 transitions, 18784 flow. Second operand 45 states and 10622 transitions. [2023-08-24 08:18:06,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 1183 transitions, 26871 flow [2023-08-24 08:18:06,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 1183 transitions, 26394 flow, removed 152 selfloop flow, removed 20 redundant places. [2023-08-24 08:18:06,629 INFO L231 Difference]: Finished difference. Result has 368 places, 1079 transitions, 25195 flow [2023-08-24 08:18:06,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=18454, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=871, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=292, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=25195, PETRI_PLACES=368, PETRI_TRANSITIONS=1079} [2023-08-24 08:18:06,630 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 348 predicate places. [2023-08-24 08:18:06,630 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 1079 transitions, 25195 flow [2023-08-24 08:18:06,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 232.64705882352942) internal successors, (7910), 34 states have internal predecessors, (7910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:18:06,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:18:06,631 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:18:06,637 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-24 08:18:06,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-24 08:18:06,837 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:18:06,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:18:06,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1269442973, now seen corresponding path program 19 times [2023-08-24 08:18:06,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:18:06,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490750287] [2023-08-24 08:18:06,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:18:06,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:18:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:18:11,558 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:18:11,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:18:11,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490750287] [2023-08-24 08:18:11,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490750287] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:18:11,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734902614] [2023-08-24 08:18:11,559 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 08:18:11,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:18:11,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:18:11,560 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:18:11,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-24 08:18:11,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:18:11,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 81 conjunts are in the unsatisfiable core [2023-08-24 08:18:11,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:18:12,329 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 08:18:12,329 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 313 treesize of output 201 [2023-08-24 08:18:12,634 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:18:12,634 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:18:15,984 INFO L322 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2023-08-24 08:18:15,984 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 716 treesize of output 278 [2023-08-24 08:18:17,064 INFO L322 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2023-08-24 08:18:17,064 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1205 treesize of output 1 [2023-08-24 08:18:17,663 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 08:18:17,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734902614] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:18:17,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:18:17,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 10] total 32 [2023-08-24 08:18:17,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259989708] [2023-08-24 08:18:17,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:18:17,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-24 08:18:17,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:18:17,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-24 08:18:17,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=884, Unknown=0, NotChecked=0, Total=1056 [2023-08-24 08:18:17,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 752 [2023-08-24 08:18:17,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 1079 transitions, 25195 flow. Second operand has 33 states, 33 states have (on average 232.6060606060606) internal successors, (7676), 33 states have internal predecessors, (7676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:18:17,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:18:17,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 752 [2023-08-24 08:18:17,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:18:30,832 INFO L124 PetriNetUnfolderBase]: 2210/3614 cut-off events. [2023-08-24 08:18:30,832 INFO L125 PetriNetUnfolderBase]: For 55718/55718 co-relation queries the response was YES. [2023-08-24 08:18:30,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39565 conditions, 3614 events. 2210/3614 cut-off events. For 55718/55718 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 20714 event pairs, 53 based on Foata normal form. 4/3618 useless extension candidates. Maximal degree in co-relation 39488. Up to 1728 conditions per place. [2023-08-24 08:18:30,886 INFO L140 encePairwiseOnDemand]: 742/752 looper letters, 363 selfloop transitions, 873 changer transitions 10/1246 dead transitions. [2023-08-24 08:18:30,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 1246 transitions, 30586 flow [2023-08-24 08:18:30,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-08-24 08:18:30,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-08-24 08:18:30,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 11079 transitions. [2023-08-24 08:18:30,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3134619737437755 [2023-08-24 08:18:30,896 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 11079 transitions. [2023-08-24 08:18:30,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 11079 transitions. [2023-08-24 08:18:30,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:18:30,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 11079 transitions. [2023-08-24 08:18:30,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 235.72340425531914) internal successors, (11079), 47 states have internal predecessors, (11079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:18:30,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 752.0) internal successors, (36096), 48 states have internal predecessors, (36096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:18:30,928 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 752.0) internal successors, (36096), 48 states have internal predecessors, (36096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:18:30,929 INFO L175 Difference]: Start difference. First operand has 368 places, 1079 transitions, 25195 flow. Second operand 47 states and 11079 transitions. [2023-08-24 08:18:30,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 1246 transitions, 30586 flow [2023-08-24 08:18:31,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 1246 transitions, 30071 flow, removed 214 selfloop flow, removed 11 redundant places. [2023-08-24 08:18:31,900 INFO L231 Difference]: Finished difference. Result has 410 places, 1166 transitions, 29645 flow [2023-08-24 08:18:31,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=24760, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1079, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=792, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=29645, PETRI_PLACES=410, PETRI_TRANSITIONS=1166} [2023-08-24 08:18:31,901 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 390 predicate places. [2023-08-24 08:18:31,901 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 1166 transitions, 29645 flow [2023-08-24 08:18:31,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 232.6060606060606) internal successors, (7676), 33 states have internal predecessors, (7676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:18:31,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:18:31,902 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:18:31,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-24 08:18:32,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-24 08:18:32,103 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:18:32,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:18:32,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1694617683, now seen corresponding path program 20 times [2023-08-24 08:18:32,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:18:32,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41104808] [2023-08-24 08:18:32,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:18:32,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:18:32,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:18:33,681 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:18:33,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:18:33,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41104808] [2023-08-24 08:18:33,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41104808] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:18:33,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323538551] [2023-08-24 08:18:33,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 08:18:33,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:18:33,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:18:33,682 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:18:33,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-24 08:18:33,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 08:18:33,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:18:33,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 52 conjunts are in the unsatisfiable core [2023-08-24 08:18:33,822 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:18:34,350 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 08:18:34,351 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 253 treesize of output 173 [2023-08-24 08:18:34,602 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:18:34,602 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:18:36,382 INFO L322 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2023-08-24 08:18:36,382 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 968 treesize of output 554 [2023-08-24 08:18:43,167 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 08:18:43,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323538551] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:18:43,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:18:43,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 8] total 29 [2023-08-24 08:18:43,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280769408] [2023-08-24 08:18:43,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:18:43,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-24 08:18:43,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:18:43,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-24 08:18:43,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2023-08-24 08:18:43,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 752 [2023-08-24 08:18:43,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 1166 transitions, 29645 flow. Second operand has 30 states, 30 states have (on average 243.9) internal successors, (7317), 30 states have internal predecessors, (7317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:18:43,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:18:43,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 752 [2023-08-24 08:18:43,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:18:48,114 INFO L124 PetriNetUnfolderBase]: 2334/3799 cut-off events. [2023-08-24 08:18:48,114 INFO L125 PetriNetUnfolderBase]: For 71216/71216 co-relation queries the response was YES. [2023-08-24 08:18:48,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44207 conditions, 3799 events. 2334/3799 cut-off events. For 71216/71216 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 21927 event pairs, 46 based on Foata normal form. 1/3800 useless extension candidates. Maximal degree in co-relation 44122. Up to 2205 conditions per place. [2023-08-24 08:18:48,154 INFO L140 encePairwiseOnDemand]: 743/752 looper letters, 688 selfloop transitions, 599 changer transitions 7/1294 dead transitions. [2023-08-24 08:18:48,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 1294 transitions, 34589 flow [2023-08-24 08:18:48,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-24 08:18:48,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-24 08:18:48,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 7169 transitions. [2023-08-24 08:18:48,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3287325752017608 [2023-08-24 08:18:48,158 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 7169 transitions. [2023-08-24 08:18:48,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 7169 transitions. [2023-08-24 08:18:48,159 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:18:48,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 7169 transitions. [2023-08-24 08:18:48,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 247.20689655172413) internal successors, (7169), 29 states have internal predecessors, (7169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:18:48,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 752.0) internal successors, (22560), 30 states have internal predecessors, (22560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:18:48,178 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 752.0) internal successors, (22560), 30 states have internal predecessors, (22560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:18:48,178 INFO L175 Difference]: Start difference. First operand has 410 places, 1166 transitions, 29645 flow. Second operand 29 states and 7169 transitions. [2023-08-24 08:18:48,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 1294 transitions, 34589 flow [2023-08-24 08:18:49,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 1294 transitions, 33945 flow, removed 192 selfloop flow, removed 22 redundant places. [2023-08-24 08:18:49,503 INFO L231 Difference]: Finished difference. Result has 422 places, 1228 transitions, 32284 flow [2023-08-24 08:18:49,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=29007, PETRI_DIFFERENCE_MINUEND_PLACES=387, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=546, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=596, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=32284, PETRI_PLACES=422, PETRI_TRANSITIONS=1228} [2023-08-24 08:18:49,505 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 402 predicate places. [2023-08-24 08:18:49,505 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 1228 transitions, 32284 flow [2023-08-24 08:18:49,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 243.9) internal successors, (7317), 30 states have internal predecessors, (7317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:18:49,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:18:49,506 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:18:49,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-24 08:18:49,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-24 08:18:49,711 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:18:49,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:18:49,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1010470017, now seen corresponding path program 21 times [2023-08-24 08:18:49,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:18:49,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616300464] [2023-08-24 08:18:49,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:18:49,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:18:49,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:18:52,832 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:18:52,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:18:52,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616300464] [2023-08-24 08:18:52,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616300464] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:18:52,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523697801] [2023-08-24 08:18:52,833 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 08:18:52,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:18:52,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:18:52,834 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:18:52,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-24 08:18:52,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-24 08:18:52,975 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:18:52,977 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 70 conjunts are in the unsatisfiable core [2023-08-24 08:18:52,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:18:53,960 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 08:18:53,961 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 282 treesize of output 186 [2023-08-24 08:18:54,272 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:18:54,272 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:18:59,088 INFO L322 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2023-08-24 08:18:59,088 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1961 treesize of output 783 [2023-08-24 08:19:12,930 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 08:19:12,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523697801] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:19:12,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:19:12,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 10] total 34 [2023-08-24 08:19:12,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259594717] [2023-08-24 08:19:12,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:19:12,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-24 08:19:12,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:19:12,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-24 08:19:12,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=994, Unknown=0, NotChecked=0, Total=1190 [2023-08-24 08:19:12,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 752 [2023-08-24 08:19:12,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 1228 transitions, 32284 flow. Second operand has 35 states, 35 states have (on average 232.57142857142858) internal successors, (8140), 35 states have internal predecessors, (8140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:19:12,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:19:12,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 752 [2023-08-24 08:19:12,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:19:33,216 INFO L124 PetriNetUnfolderBase]: 2645/4295 cut-off events. [2023-08-24 08:19:33,217 INFO L125 PetriNetUnfolderBase]: For 93234/93234 co-relation queries the response was YES. [2023-08-24 08:19:33,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52121 conditions, 4295 events. 2645/4295 cut-off events. For 93234/93234 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 25241 event pairs, 54 based on Foata normal form. 3/4298 useless extension candidates. Maximal degree in co-relation 52030. Up to 1837 conditions per place. [2023-08-24 08:19:33,263 INFO L140 encePairwiseOnDemand]: 742/752 looper letters, 387 selfloop transitions, 1100 changer transitions 8/1495 dead transitions. [2023-08-24 08:19:33,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 1495 transitions, 41075 flow [2023-08-24 08:19:33,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-08-24 08:19:33,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-08-24 08:19:33,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 13665 transitions. [2023-08-24 08:19:33,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31330245781364635 [2023-08-24 08:19:33,271 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 13665 transitions. [2023-08-24 08:19:33,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 13665 transitions. [2023-08-24 08:19:33,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:19:33,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 13665 transitions. [2023-08-24 08:19:33,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 235.60344827586206) internal successors, (13665), 58 states have internal predecessors, (13665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:19:33,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 752.0) internal successors, (44368), 59 states have internal predecessors, (44368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:19:33,297 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 752.0) internal successors, (44368), 59 states have internal predecessors, (44368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:19:33,297 INFO L175 Difference]: Start difference. First operand has 422 places, 1228 transitions, 32284 flow. Second operand 58 states and 13665 transitions. [2023-08-24 08:19:33,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 1495 transitions, 41075 flow [2023-08-24 08:19:34,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 1495 transitions, 40191 flow, removed 150 selfloop flow, removed 18 redundant places. [2023-08-24 08:19:34,832 INFO L231 Difference]: Finished difference. Result has 469 places, 1398 transitions, 39403 flow [2023-08-24 08:19:34,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=31573, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=943, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=39403, PETRI_PLACES=469, PETRI_TRANSITIONS=1398} [2023-08-24 08:19:34,834 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 449 predicate places. [2023-08-24 08:19:34,834 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 1398 transitions, 39403 flow [2023-08-24 08:19:34,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 232.57142857142858) internal successors, (8140), 35 states have internal predecessors, (8140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:19:34,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:19:34,835 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:19:34,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-24 08:19:35,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:19:35,041 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:19:35,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:19:35,041 INFO L85 PathProgramCache]: Analyzing trace with hash 820877003, now seen corresponding path program 22 times [2023-08-24 08:19:35,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:19:35,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196599084] [2023-08-24 08:19:35,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:19:35,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:19:35,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:19:36,971 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:19:36,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:19:36,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196599084] [2023-08-24 08:19:36,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196599084] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:19:36,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367985272] [2023-08-24 08:19:36,972 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 08:19:36,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:19:36,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:19:36,973 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:19:36,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-24 08:19:37,101 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 08:19:37,101 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:19:37,103 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 72 conjunts are in the unsatisfiable core [2023-08-24 08:19:37,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:19:38,832 INFO L322 Elim1Store]: treesize reduction 32, result has 17.9 percent of original size [2023-08-24 08:19:38,833 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 375 treesize of output 251 [2023-08-24 08:19:39,456 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:19:39,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:19:43,341 INFO L322 Elim1Store]: treesize reduction 28, result has 24.3 percent of original size [2023-08-24 08:19:43,342 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1724 treesize of output 682 [2023-08-24 08:19:44,611 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 08:19:44,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367985272] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:19:44,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:19:44,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 10] total 33 [2023-08-24 08:19:44,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923680244] [2023-08-24 08:19:44,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:19:44,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-24 08:19:44,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:19:44,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-24 08:19:44,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=919, Unknown=0, NotChecked=0, Total=1122 [2023-08-24 08:19:44,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 752 [2023-08-24 08:19:44,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 1398 transitions, 39403 flow. Second operand has 34 states, 34 states have (on average 232.61764705882354) internal successors, (7909), 34 states have internal predecessors, (7909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:19:44,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:19:44,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 752 [2023-08-24 08:19:44,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:20:03,495 INFO L124 PetriNetUnfolderBase]: 2828/4601 cut-off events. [2023-08-24 08:20:03,496 INFO L125 PetriNetUnfolderBase]: For 112302/112302 co-relation queries the response was YES. [2023-08-24 08:20:03,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58107 conditions, 4601 events. 2828/4601 cut-off events. For 112302/112302 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 27423 event pairs, 14 based on Foata normal form. 12/4613 useless extension candidates. Maximal degree in co-relation 58008. Up to 1984 conditions per place. [2023-08-24 08:20:03,552 INFO L140 encePairwiseOnDemand]: 741/752 looper letters, 422 selfloop transitions, 1173 changer transitions 23/1618 dead transitions. [2023-08-24 08:20:03,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 524 places, 1618 transitions, 46397 flow [2023-08-24 08:20:03,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2023-08-24 08:20:03,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2023-08-24 08:20:03,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 13192 transitions. [2023-08-24 08:20:03,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3132598784194529 [2023-08-24 08:20:03,559 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 13192 transitions. [2023-08-24 08:20:03,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 13192 transitions. [2023-08-24 08:20:03,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:20:03,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 13192 transitions. [2023-08-24 08:20:03,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 235.57142857142858) internal successors, (13192), 56 states have internal predecessors, (13192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:20:03,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 752.0) internal successors, (42864), 57 states have internal predecessors, (42864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:20:03,586 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 752.0) internal successors, (42864), 57 states have internal predecessors, (42864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:20:03,586 INFO L175 Difference]: Start difference. First operand has 469 places, 1398 transitions, 39403 flow. Second operand 56 states and 13192 transitions. [2023-08-24 08:20:03,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 524 places, 1618 transitions, 46397 flow [2023-08-24 08:20:05,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 499 places, 1618 transitions, 44890 flow, removed 280 selfloop flow, removed 25 redundant places. [2023-08-24 08:20:05,650 INFO L231 Difference]: Finished difference. Result has 513 places, 1507 transitions, 44875 flow [2023-08-24 08:20:05,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=36638, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1349, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1011, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=44875, PETRI_PLACES=513, PETRI_TRANSITIONS=1507} [2023-08-24 08:20:05,652 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 493 predicate places. [2023-08-24 08:20:05,652 INFO L495 AbstractCegarLoop]: Abstraction has has 513 places, 1507 transitions, 44875 flow [2023-08-24 08:20:05,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 232.61764705882354) internal successors, (7909), 34 states have internal predecessors, (7909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:20:05,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:20:05,653 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:20:05,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-24 08:20:05,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-24 08:20:05,858 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:20:05,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:20:05,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1189343795, now seen corresponding path program 23 times [2023-08-24 08:20:05,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:20:05,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432406604] [2023-08-24 08:20:05,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:20:05,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:20:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:20:07,181 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:20:07,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:20:07,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432406604] [2023-08-24 08:20:07,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432406604] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:20:07,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401301207] [2023-08-24 08:20:07,181 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 08:20:07,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:20:07,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:20:07,182 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:20:07,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-24 08:20:07,305 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-24 08:20:07,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:20:07,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 49 conjunts are in the unsatisfiable core [2023-08-24 08:20:07,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:20:08,661 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 08:20:08,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 08:20:08,662 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 08:20:08,668 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 08:20:08,668 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 290 treesize of output 204 [2023-08-24 08:20:08,884 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 08:20:08,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:20:10,476 INFO L322 Elim1Store]: treesize reduction 36, result has 20.0 percent of original size [2023-08-24 08:20:10,477 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1088 treesize of output 568 [2023-08-24 08:20:11,896 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 08:20:11,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401301207] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:20:11,897 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:20:11,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 9] total 27 [2023-08-24 08:20:11,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358736784] [2023-08-24 08:20:11,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:20:11,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-24 08:20:11,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:20:11,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-24 08:20:11,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2023-08-24 08:20:11,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 752 [2023-08-24 08:20:11,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 1507 transitions, 44875 flow. Second operand has 28 states, 28 states have (on average 240.82142857142858) internal successors, (6743), 28 states have internal predecessors, (6743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:20:11,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:20:11,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 752 [2023-08-24 08:20:11,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:20:19,360 INFO L124 PetriNetUnfolderBase]: 2978/4882 cut-off events. [2023-08-24 08:20:19,360 INFO L125 PetriNetUnfolderBase]: For 121692/121692 co-relation queries the response was YES. [2023-08-24 08:20:19,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65420 conditions, 4882 events. 2978/4882 cut-off events. For 121692/121692 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 29791 event pairs, 28 based on Foata normal form. 5/4887 useless extension candidates. Maximal degree in co-relation 65313. Up to 1970 conditions per place. [2023-08-24 08:20:19,425 INFO L140 encePairwiseOnDemand]: 742/752 looper letters, 434 selfloop transitions, 1222 changer transitions 28/1684 dead transitions. [2023-08-24 08:20:19,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 1684 transitions, 52481 flow [2023-08-24 08:20:19,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-24 08:20:19,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-24 08:20:19,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 8763 transitions. [2023-08-24 08:20:19,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32369237588652483 [2023-08-24 08:20:19,434 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 8763 transitions. [2023-08-24 08:20:19,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 8763 transitions. [2023-08-24 08:20:19,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:20:19,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 8763 transitions. [2023-08-24 08:20:19,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 243.41666666666666) internal successors, (8763), 36 states have internal predecessors, (8763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:20:19,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 752.0) internal successors, (27824), 37 states have internal predecessors, (27824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:20:19,449 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 752.0) internal successors, (27824), 37 states have internal predecessors, (27824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:20:19,449 INFO L175 Difference]: Start difference. First operand has 513 places, 1507 transitions, 44875 flow. Second operand 36 states and 8763 transitions. [2023-08-24 08:20:19,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 1684 transitions, 52481 flow [2023-08-24 08:20:21,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 1684 transitions, 50791 flow, removed 88 selfloop flow, removed 26 redundant places. [2023-08-24 08:20:21,851 INFO L231 Difference]: Finished difference. Result has 523 places, 1603 transitions, 49912 flow [2023-08-24 08:20:21,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=43340, PETRI_DIFFERENCE_MINUEND_PLACES=482, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=49912, PETRI_PLACES=523, PETRI_TRANSITIONS=1603} [2023-08-24 08:20:21,852 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 503 predicate places. [2023-08-24 08:20:21,852 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 1603 transitions, 49912 flow [2023-08-24 08:20:21,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 240.82142857142858) internal successors, (6743), 28 states have internal predecessors, (6743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:20:21,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:20:21,853 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:20:21,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-24 08:20:22,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-24 08:20:22,054 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:20:22,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:20:22,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1148922989, now seen corresponding path program 24 times [2023-08-24 08:20:22,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:20:22,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612500164] [2023-08-24 08:20:22,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:20:22,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:20:22,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:20:23,751 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:20:23,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:20:23,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612500164] [2023-08-24 08:20:23,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612500164] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:20:23,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877799587] [2023-08-24 08:20:23,752 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 08:20:23,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:20:23,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:20:23,755 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:20:23,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-24 08:20:23,911 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-24 08:20:23,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:20:23,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 50 conjunts are in the unsatisfiable core [2023-08-24 08:20:23,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:20:25,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 08:20:25,497 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 08:20:25,497 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 08:20:25,503 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 08:20:25,503 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 307 treesize of output 215 [2023-08-24 08:20:26,038 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:20:26,038 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:20:27,178 INFO L322 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2023-08-24 08:20:27,178 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1018 treesize of output 526 [2023-08-24 08:20:41,777 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 08:20:41,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877799587] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:20:41,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:20:41,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 8] total 27 [2023-08-24 08:20:41,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058813971] [2023-08-24 08:20:41,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:20:41,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-24 08:20:41,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:20:41,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-24 08:20:41,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=653, Unknown=0, NotChecked=0, Total=756 [2023-08-24 08:20:41,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 752 [2023-08-24 08:20:41,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 1603 transitions, 49912 flow. Second operand has 28 states, 28 states have (on average 236.82142857142858) internal successors, (6631), 28 states have internal predecessors, (6631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:20:41,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:20:41,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 752 [2023-08-24 08:20:41,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:20:46,636 INFO L124 PetriNetUnfolderBase]: 3057/4999 cut-off events. [2023-08-24 08:20:46,637 INFO L125 PetriNetUnfolderBase]: For 127734/127734 co-relation queries the response was YES. [2023-08-24 08:20:46,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69825 conditions, 4999 events. 3057/4999 cut-off events. For 127734/127734 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 30490 event pairs, 122 based on Foata normal form. 2/5001 useless extension candidates. Maximal degree in co-relation 69720. Up to 3738 conditions per place. [2023-08-24 08:20:46,712 INFO L140 encePairwiseOnDemand]: 744/752 looper letters, 1205 selfloop transitions, 501 changer transitions 9/1715 dead transitions. [2023-08-24 08:20:46,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 1715 transitions, 56040 flow [2023-08-24 08:20:46,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-24 08:20:46,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-24 08:20:46,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 6237 transitions. [2023-08-24 08:20:46,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3189954991816694 [2023-08-24 08:20:46,716 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 6237 transitions. [2023-08-24 08:20:46,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 6237 transitions. [2023-08-24 08:20:46,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:20:46,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 6237 transitions. [2023-08-24 08:20:46,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 239.8846153846154) internal successors, (6237), 26 states have internal predecessors, (6237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:20:46,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 752.0) internal successors, (20304), 27 states have internal predecessors, (20304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:20:46,727 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 752.0) internal successors, (20304), 27 states have internal predecessors, (20304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:20:46,727 INFO L175 Difference]: Start difference. First operand has 523 places, 1603 transitions, 49912 flow. Second operand 26 states and 6237 transitions. [2023-08-24 08:20:46,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 1715 transitions, 56040 flow [2023-08-24 08:20:49,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 1715 transitions, 55526 flow, removed 126 selfloop flow, removed 15 redundant places. [2023-08-24 08:20:49,191 INFO L231 Difference]: Finished difference. Result has 537 places, 1655 transitions, 52363 flow [2023-08-24 08:20:49,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=49458, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=451, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=52363, PETRI_PLACES=537, PETRI_TRANSITIONS=1655} [2023-08-24 08:20:49,192 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 517 predicate places. [2023-08-24 08:20:49,193 INFO L495 AbstractCegarLoop]: Abstraction has has 537 places, 1655 transitions, 52363 flow [2023-08-24 08:20:49,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 236.82142857142858) internal successors, (6631), 28 states have internal predecessors, (6631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:20:49,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:20:49,193 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:20:49,199 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-08-24 08:20:49,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:20:49,394 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:20:49,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:20:49,394 INFO L85 PathProgramCache]: Analyzing trace with hash 979134631, now seen corresponding path program 25 times [2023-08-24 08:20:49,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:20:49,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895568505] [2023-08-24 08:20:49,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:20:49,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:20:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:20:51,117 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:20:51,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:20:51,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895568505] [2023-08-24 08:20:51,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895568505] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:20:51,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699929529] [2023-08-24 08:20:51,117 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 08:20:51,117 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:20:51,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:20:51,119 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:20:51,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-24 08:20:51,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:20:51,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 80 conjunts are in the unsatisfiable core [2023-08-24 08:20:51,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:20:51,942 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 08:20:51,942 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 313 treesize of output 201 [2023-08-24 08:20:52,302 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:20:52,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:20:54,883 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 08:20:54,884 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 890 treesize of output 346 [2023-08-24 08:20:58,968 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 08:20:58,968 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 439 treesize of output 181 [2023-08-24 08:21:03,737 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 08:21:03,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699929529] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:21:03,737 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:21:03,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 10] total 31 [2023-08-24 08:21:03,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250106092] [2023-08-24 08:21:03,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:21:03,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-24 08:21:03,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:21:03,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-24 08:21:03,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=846, Unknown=0, NotChecked=0, Total=992 [2023-08-24 08:21:03,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 752 [2023-08-24 08:21:03,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 537 places, 1655 transitions, 52363 flow. Second operand has 32 states, 32 states have (on average 239.65625) internal successors, (7669), 32 states have internal predecessors, (7669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:21:03,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:21:03,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 752 [2023-08-24 08:21:03,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:21:13,227 INFO L124 PetriNetUnfolderBase]: 3402/5527 cut-off events. [2023-08-24 08:21:13,228 INFO L125 PetriNetUnfolderBase]: For 154904/154904 co-relation queries the response was YES. [2023-08-24 08:21:13,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78810 conditions, 5527 events. 3402/5527 cut-off events. For 154904/154904 co-relation queries the response was YES. Maximal size of possible extension queue 415. Compared 34262 event pairs, 65 based on Foata normal form. 1/5528 useless extension candidates. Maximal degree in co-relation 78699. Up to 3524 conditions per place. [2023-08-24 08:21:13,307 INFO L140 encePairwiseOnDemand]: 742/752 looper letters, 1064 selfloop transitions, 858 changer transitions 7/1929 dead transitions. [2023-08-24 08:21:13,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 1929 transitions, 63706 flow [2023-08-24 08:21:13,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-08-24 08:21:13,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-08-24 08:21:13,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 10212 transitions. [2023-08-24 08:21:13,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32332826747720367 [2023-08-24 08:21:13,313 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 10212 transitions. [2023-08-24 08:21:13,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 10212 transitions. [2023-08-24 08:21:13,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:21:13,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 10212 transitions. [2023-08-24 08:21:13,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 243.14285714285714) internal successors, (10212), 42 states have internal predecessors, (10212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:21:13,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 752.0) internal successors, (32336), 43 states have internal predecessors, (32336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:21:13,331 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 752.0) internal successors, (32336), 43 states have internal predecessors, (32336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:21:13,331 INFO L175 Difference]: Start difference. First operand has 537 places, 1655 transitions, 52363 flow. Second operand 42 states and 10212 transitions. [2023-08-24 08:21:13,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 1929 transitions, 63706 flow [2023-08-24 08:21:16,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 565 places, 1929 transitions, 63322 flow, removed 108 selfloop flow, removed 13 redundant places. [2023-08-24 08:21:16,246 INFO L231 Difference]: Finished difference. Result has 577 places, 1835 transitions, 61056 flow [2023-08-24 08:21:16,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=52092, PETRI_DIFFERENCE_MINUEND_PLACES=524, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1655, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=693, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=915, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=61056, PETRI_PLACES=577, PETRI_TRANSITIONS=1835} [2023-08-24 08:21:16,247 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 557 predicate places. [2023-08-24 08:21:16,247 INFO L495 AbstractCegarLoop]: Abstraction has has 577 places, 1835 transitions, 61056 flow [2023-08-24 08:21:16,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 239.65625) internal successors, (7669), 32 states have internal predecessors, (7669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:21:16,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:21:16,248 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:21:16,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-08-24 08:21:16,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:21:16,449 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:21:16,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:21:16,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1734553059, now seen corresponding path program 26 times [2023-08-24 08:21:16,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:21:16,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241879905] [2023-08-24 08:21:16,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:21:16,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:21:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:21:19,803 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:21:19,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:21:19,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241879905] [2023-08-24 08:21:19,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241879905] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:21:19,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873137221] [2023-08-24 08:21:19,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 08:21:19,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:21:19,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:21:19,805 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:21:19,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-24 08:21:19,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 08:21:19,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:21:19,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 80 conjunts are in the unsatisfiable core [2023-08-24 08:21:19,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:21:20,656 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 08:21:20,657 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 313 treesize of output 201 [2023-08-24 08:21:20,987 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:21:20,987 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:21:23,723 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 08:21:23,724 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 577 treesize of output 217 [2023-08-24 08:21:24,821 INFO L322 Elim1Store]: treesize reduction 24, result has 35.1 percent of original size [2023-08-24 08:21:24,822 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1166 treesize of output 394 [2023-08-24 08:21:25,972 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 08:21:25,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873137221] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:21:25,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:21:25,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 10] total 33 [2023-08-24 08:21:25,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32176421] [2023-08-24 08:21:25,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:21:25,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-24 08:21:25,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:21:25,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-24 08:21:25,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=973, Unknown=0, NotChecked=0, Total=1122 [2023-08-24 08:21:25,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 752 [2023-08-24 08:21:25,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 577 places, 1835 transitions, 61056 flow. Second operand has 34 states, 34 states have (on average 232.58823529411765) internal successors, (7908), 34 states have internal predecessors, (7908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:21:25,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:21:25,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 752 [2023-08-24 08:21:25,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:21:37,800 INFO L124 PetriNetUnfolderBase]: 3549/5740 cut-off events. [2023-08-24 08:21:37,801 INFO L125 PetriNetUnfolderBase]: For 183508/183508 co-relation queries the response was YES. [2023-08-24 08:21:37,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85334 conditions, 5740 events. 3549/5740 cut-off events. For 183508/183508 co-relation queries the response was YES. Maximal size of possible extension queue 416. Compared 35445 event pairs, 99 based on Foata normal form. 5/5745 useless extension candidates. Maximal degree in co-relation 85212. Up to 4141 conditions per place. [2023-08-24 08:21:37,877 INFO L140 encePairwiseOnDemand]: 742/752 looper letters, 1225 selfloop transitions, 766 changer transitions 6/1997 dead transitions. [2023-08-24 08:21:37,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 1997 transitions, 69131 flow [2023-08-24 08:21:37,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-24 08:21:37,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-24 08:21:37,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 11296 transitions. [2023-08-24 08:21:37,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3129432624113475 [2023-08-24 08:21:37,888 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 11296 transitions. [2023-08-24 08:21:37,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 11296 transitions. [2023-08-24 08:21:37,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:21:37,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 11296 transitions. [2023-08-24 08:21:37,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 235.33333333333334) internal successors, (11296), 48 states have internal predecessors, (11296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:21:37,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 752.0) internal successors, (36848), 49 states have internal predecessors, (36848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:21:37,910 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 752.0) internal successors, (36848), 49 states have internal predecessors, (36848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:21:37,910 INFO L175 Difference]: Start difference. First operand has 577 places, 1835 transitions, 61056 flow. Second operand 48 states and 11296 transitions. [2023-08-24 08:21:37,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 1997 transitions, 69131 flow [2023-08-24 08:21:41,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 609 places, 1997 transitions, 68669 flow, removed 202 selfloop flow, removed 11 redundant places. [2023-08-24 08:21:41,928 INFO L231 Difference]: Finished difference. Result has 618 places, 1923 transitions, 66052 flow [2023-08-24 08:21:41,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=59559, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1806, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=658, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=66052, PETRI_PLACES=618, PETRI_TRANSITIONS=1923} [2023-08-24 08:21:41,929 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 598 predicate places. [2023-08-24 08:21:41,929 INFO L495 AbstractCegarLoop]: Abstraction has has 618 places, 1923 transitions, 66052 flow [2023-08-24 08:21:41,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 232.58823529411765) internal successors, (7908), 34 states have internal predecessors, (7908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:21:41,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:21:41,931 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:21:41,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-08-24 08:21:42,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:21:42,131 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:21:42,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:21:42,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1274654753, now seen corresponding path program 27 times [2023-08-24 08:21:42,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:21:42,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114201968] [2023-08-24 08:21:42,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:21:42,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:21:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:21:43,513 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:21:43,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:21:43,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114201968] [2023-08-24 08:21:43,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114201968] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:21:43,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601413314] [2023-08-24 08:21:43,514 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 08:21:43,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:21:43,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:21:43,515 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:21:43,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-24 08:21:43,651 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-24 08:21:43,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:21:43,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 73 conjunts are in the unsatisfiable core [2023-08-24 08:21:43,655 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:21:43,684 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-24 08:21:43,713 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-24 08:21:43,752 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 08:21:43,819 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 08:21:45,183 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 08:21:45,184 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 08:21:45,191 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 08:21:45,192 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 284 treesize of output 198 [2023-08-24 08:21:45,438 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:21:45,438 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:21:50,454 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse52 (* c_~j~0 4)) (.cse53 (* c_~i~0 4))) (let ((.cse1 (< 2147483647 (+ c_~bag1~0 c_~sum1~0))) (.cse16 (< (+ c_~bag1~0 c_~sum1~0 2147483648) 0)) (.cse0 (<= c_~N~0 (+ c_~i~0 1))) (.cse8 (+ c_~A~0.offset .cse53 4)) (.cse7 (+ c_~A~0.offset .cse53)) (.cse9 (+ c_~A~0.offset .cse52)) (.cse10 (+ c_~A~0.offset .cse52 4)) (.cse11 (<= (+ 3 c_~i~0) c_~N~0)) (.cse17 (< (+ 2 c_~j~0) c_~N~0)) (.cse18 (<= c_~N~0 (+ c_~j~0 1)))) (and (or .cse0 .cse1 (and (or (forall ((v_ArrVal_1019 (Array Int Int))) (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1019) c_~A~0.base))) (let ((.cse3 (select .cse6 .cse10)) (.cse2 (select .cse6 .cse9)) (.cse4 (select .cse6 .cse8)) (.cse5 (select .cse6 .cse7))) (or (< (+ c_~bag2~0 .cse2 2147483648) 0) (< (+ c_~bag2~0 .cse2 .cse3 2147483648) 0) (< 2147483647 (+ c_~bag2~0 .cse2 .cse3)) (< 2147483647 (+ .cse4 .cse5)) (= (+ c_~bag2~0 .cse2 .cse3 c_~sum2~0) (+ c_~bag1~0 c_~sum1~0 .cse4 .cse5)) (< 2147483647 (+ c_~bag2~0 .cse2)) (< (+ .cse4 .cse5 2147483648) 0))))) .cse11) (or (forall ((v_ArrVal_1019 (Array Int Int))) (let ((.cse15 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1019) c_~A~0.base))) (let ((.cse14 (select .cse15 .cse10)) (.cse12 (select .cse15 .cse7)) (.cse13 (select .cse15 .cse9))) (or (< 2147483647 (+ c_~bag1~0 c_~sum1~0 .cse12)) (< (+ c_~bag2~0 .cse13 2147483648) 0) (< (+ c_~bag1~0 c_~sum1~0 .cse12 2147483648) 0) (< (+ c_~bag2~0 .cse13 .cse14 2147483648) 0) (< 2147483647 (+ c_~bag2~0 .cse13 .cse14)) (= (+ c_~bag2~0 .cse13 .cse14 c_~sum2~0) (+ c_~bag1~0 c_~sum1~0 (select .cse15 .cse8) .cse12)) (< 2147483647 (+ c_~bag2~0 .cse13)))))) .cse11)) .cse16 .cse17 .cse18) (or (and (or (forall ((v_ArrVal_1019 (Array Int Int))) (let ((.cse23 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1019) c_~A~0.base))) (let ((.cse22 (select .cse23 .cse10)) (.cse21 (select .cse23 .cse9)) (.cse19 (select .cse23 .cse8)) (.cse20 (select .cse23 .cse7))) (or (< (+ c_~bag1~0 .cse19 .cse20 2147483648) 0) (< (+ c_~bag2~0 .cse21 2147483648) 0) (< (+ c_~bag2~0 .cse21 .cse22 2147483648) 0) (< 2147483647 (+ c_~bag2~0 .cse21 .cse22)) (= (+ c_~bag2~0 .cse21 .cse22 c_~sum2~0) (+ c_~bag1~0 c_~sum1~0 .cse19 .cse20)) (< 2147483647 (+ c_~bag1~0 .cse20)) (< 2147483647 (+ c_~bag2~0 .cse21)) (< 2147483647 (+ c_~bag1~0 .cse19 .cse20)) (< (+ c_~bag1~0 .cse20 2147483648) 0))))) .cse11) (or (forall ((v_ArrVal_1019 (Array Int Int))) (let ((.cse27 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1019) c_~A~0.base))) (let ((.cse26 (select .cse27 .cse10)) (.cse25 (select .cse27 .cse9)) (.cse24 (select .cse27 .cse7))) (or (< 2147483647 (+ c_~bag1~0 c_~sum1~0 .cse24)) (< (+ c_~bag2~0 .cse25 2147483648) 0) (< (+ c_~bag1~0 c_~sum1~0 .cse24 2147483648) 0) (< (+ c_~bag2~0 .cse25 .cse26 2147483648) 0) (< 2147483647 (+ c_~bag2~0 .cse25 .cse26)) (= (+ c_~bag2~0 .cse25 .cse26 c_~sum2~0) (+ c_~bag1~0 c_~sum1~0 (select .cse27 .cse8) .cse24)) (< 2147483647 (+ c_~bag1~0 .cse24)) (< 2147483647 (+ c_~bag2~0 .cse25)) (< (+ c_~bag1~0 .cse24 2147483648) 0))))) .cse11)) .cse0 .cse17 .cse18) (or (< (+ c_~bag2~0 c_~sum2~0 2147483648) 0) (and (or .cse0 .cse1 .cse16 (and (or .cse11 .cse17 .cse18 (forall ((v_ArrVal_1019 (Array Int Int))) (let ((.cse30 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1019) c_~A~0.base))) (let ((.cse29 (select .cse30 .cse10)) (.cse28 (select .cse30 .cse9))) (or (< (+ .cse28 .cse29 2147483648) 0) (< (+ c_~bag2~0 .cse28 2147483648) 0) (< 2147483647 (+ .cse28 .cse29)) (< 2147483647 (+ c_~bag2~0 .cse28 c_~sum2~0)) (< (+ c_~bag2~0 .cse28 c_~sum2~0 2147483648) 0) (= (+ c_~bag2~0 .cse28 .cse29 c_~sum2~0) (+ c_~bag1~0 c_~sum1~0 (select .cse30 .cse8) (select .cse30 .cse7))) (< 2147483647 (+ c_~bag2~0 .cse28))))))) (or (forall ((v_ArrVal_1019 (Array Int Int))) (let ((.cse33 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1019) c_~A~0.base))) (let ((.cse32 (select .cse33 .cse10)) (.cse31 (select .cse33 .cse9))) (or (< (+ .cse31 .cse32 2147483648) 0) (< c_~bag2~0 (+ .cse32 1)) (= (+ c_~bag2~0 .cse31 .cse32 c_~sum2~0) (+ c_~bag1~0 c_~sum1~0 (select .cse33 .cse8) (select .cse33 .cse7))) (< 2147483647 (+ c_~bag2~0 .cse31)))))) .cse11 .cse17 .cse18))) (or .cse0 (and (or (and (or (forall ((v_ArrVal_1019 (Array Int Int))) (let ((.cse37 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1019) c_~A~0.base))) (let ((.cse36 (select .cse37 .cse10)) (.cse35 (select .cse37 .cse9)) (.cse34 (select .cse37 .cse7))) (or (< 2147483647 (+ c_~bag1~0 c_~sum1~0 .cse34)) (< (+ .cse35 .cse36 2147483648) 0) (< (+ c_~bag1~0 c_~sum1~0 .cse34 2147483648) 0) (< c_~bag2~0 (+ .cse36 1)) (= (+ c_~bag2~0 .cse35 .cse36 c_~sum2~0) (+ c_~bag1~0 c_~sum1~0 (select .cse37 .cse8) .cse34)) (< 2147483647 (+ c_~bag1~0 .cse34)) (< 2147483647 (+ c_~bag2~0 .cse35)) (< (+ c_~bag1~0 .cse34 2147483648) 0))))) .cse11) (or (forall ((v_ArrVal_1019 (Array Int Int))) (let ((.cse42 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1019) c_~A~0.base))) (let ((.cse41 (select .cse42 .cse10)) (.cse40 (select .cse42 .cse9)) (.cse38 (select .cse42 .cse8)) (.cse39 (select .cse42 .cse7))) (or (< (+ c_~bag1~0 .cse38 .cse39 2147483648) 0) (< (+ .cse40 .cse41 2147483648) 0) (< c_~bag2~0 (+ .cse41 1)) (= (+ c_~bag2~0 .cse40 .cse41 c_~sum2~0) (+ c_~bag1~0 c_~sum1~0 .cse38 .cse39)) (< 2147483647 (+ c_~bag1~0 .cse39)) (< 2147483647 (+ c_~bag2~0 .cse40)) (< 2147483647 (+ c_~bag1~0 .cse38 .cse39)) (< (+ c_~bag1~0 .cse39 2147483648) 0))))) .cse11)) .cse17 .cse18) (or (and (or (forall ((v_ArrVal_1019 (Array Int Int))) (let ((.cse47 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1019) c_~A~0.base))) (let ((.cse46 (select .cse47 .cse10)) (.cse45 (select .cse47 .cse9)) (.cse43 (select .cse47 .cse8)) (.cse44 (select .cse47 .cse7))) (or (< (+ c_~bag1~0 .cse43 .cse44 2147483648) 0) (< (+ .cse45 .cse46 2147483648) 0) (< (+ c_~bag2~0 .cse45 2147483648) 0) (< 2147483647 (+ .cse45 .cse46)) (< 2147483647 (+ c_~bag2~0 .cse45 c_~sum2~0)) (< (+ c_~bag2~0 .cse45 c_~sum2~0 2147483648) 0) (= (+ c_~bag2~0 .cse45 .cse46 c_~sum2~0) (+ c_~bag1~0 c_~sum1~0 .cse43 .cse44)) (< 2147483647 (+ c_~bag1~0 .cse44)) (< 2147483647 (+ c_~bag2~0 .cse45)) (< 2147483647 (+ c_~bag1~0 .cse43 .cse44)) (< (+ c_~bag1~0 .cse44 2147483648) 0))))) .cse11) (or (forall ((v_ArrVal_1019 (Array Int Int))) (let ((.cse51 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1019) c_~A~0.base))) (let ((.cse50 (select .cse51 .cse10)) (.cse49 (select .cse51 .cse9)) (.cse48 (select .cse51 .cse7))) (or (< 2147483647 (+ c_~bag1~0 c_~sum1~0 .cse48)) (< (+ .cse49 .cse50 2147483648) 0) (< (+ c_~bag2~0 .cse49 2147483648) 0) (< 2147483647 (+ .cse49 .cse50)) (< 2147483647 (+ c_~bag2~0 .cse49 c_~sum2~0)) (< (+ c_~bag1~0 c_~sum1~0 .cse48 2147483648) 0) (< (+ c_~bag2~0 .cse49 c_~sum2~0 2147483648) 0) (= (+ c_~bag2~0 .cse49 .cse50 c_~sum2~0) (+ c_~bag1~0 c_~sum1~0 (select .cse51 .cse8) .cse48)) (< 2147483647 (+ c_~bag1~0 .cse48)) (< 2147483647 (+ c_~bag2~0 .cse49)) (< (+ c_~bag1~0 .cse48 2147483648) 0))))) .cse11)) .cse17 .cse18)))) (< 2147483647 (+ c_~bag2~0 c_~sum2~0)))))) is different from false [2023-08-24 08:21:51,230 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 08:21:51,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601413314] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:21:51,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:21:51,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 30 [2023-08-24 08:21:51,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134550149] [2023-08-24 08:21:51,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:21:51,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-24 08:21:51,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:21:51,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-24 08:21:51,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=719, Unknown=1, NotChecked=56, Total=930 [2023-08-24 08:21:51,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 752 [2023-08-24 08:21:51,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 1923 transitions, 66052 flow. Second operand has 31 states, 31 states have (on average 236.67741935483872) internal successors, (7337), 31 states have internal predecessors, (7337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:21:51,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:21:51,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 752 [2023-08-24 08:21:51,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:22:06,773 INFO L124 PetriNetUnfolderBase]: 3580/5839 cut-off events. [2023-08-24 08:22:06,773 INFO L125 PetriNetUnfolderBase]: For 200644/200644 co-relation queries the response was YES. [2023-08-24 08:22:06,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88732 conditions, 5839 events. 3580/5839 cut-off events. For 200644/200644 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 36838 event pairs, 36 based on Foata normal form. 21/5860 useless extension candidates. Maximal degree in co-relation 88602. Up to 2322 conditions per place. [2023-08-24 08:22:06,859 INFO L140 encePairwiseOnDemand]: 742/752 looper letters, 548 selfloop transitions, 1463 changer transitions 23/2034 dead transitions. [2023-08-24 08:22:06,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 656 places, 2034 transitions, 72329 flow [2023-08-24 08:22:06,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-24 08:22:06,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-24 08:22:06,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 9588 transitions. [2023-08-24 08:22:06,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31875 [2023-08-24 08:22:06,864 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 9588 transitions. [2023-08-24 08:22:06,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 9588 transitions. [2023-08-24 08:22:06,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:22:06,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 9588 transitions. [2023-08-24 08:22:06,872 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 239.7) internal successors, (9588), 40 states have internal predecessors, (9588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:22:06,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 752.0) internal successors, (30832), 41 states have internal predecessors, (30832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:22:06,883 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 752.0) internal successors, (30832), 41 states have internal predecessors, (30832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:22:06,883 INFO L175 Difference]: Start difference. First operand has 618 places, 1923 transitions, 66052 flow. Second operand 40 states and 9588 transitions. [2023-08-24 08:22:06,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 656 places, 2034 transitions, 72329 flow [2023-08-24 08:22:11,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 630 places, 2034 transitions, 71105 flow, removed 264 selfloop flow, removed 26 redundant places. [2023-08-24 08:22:11,212 INFO L231 Difference]: Finished difference. Result has 637 places, 1957 transitions, 70337 flow [2023-08-24 08:22:11,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=62660, PETRI_DIFFERENCE_MINUEND_PLACES=591, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1867, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1368, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=70337, PETRI_PLACES=637, PETRI_TRANSITIONS=1957} [2023-08-24 08:22:11,214 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 617 predicate places. [2023-08-24 08:22:11,214 INFO L495 AbstractCegarLoop]: Abstraction has has 637 places, 1957 transitions, 70337 flow [2023-08-24 08:22:11,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 236.67741935483872) internal successors, (7337), 31 states have internal predecessors, (7337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:22:11,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:22:11,215 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:22:11,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-08-24 08:22:11,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:22:11,415 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:22:11,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:22:11,416 INFO L85 PathProgramCache]: Analyzing trace with hash -721095935, now seen corresponding path program 28 times [2023-08-24 08:22:11,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:22:11,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790034680] [2023-08-24 08:22:11,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:22:11,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:22:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:22:34,504 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:22:34,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:22:34,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790034680] [2023-08-24 08:22:34,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790034680] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:22:34,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638100790] [2023-08-24 08:22:34,505 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 08:22:34,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:22:34,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:22:34,506 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:22:34,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-24 08:22:34,647 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 08:22:34,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:22:34,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 97 conjunts are in the unsatisfiable core [2023-08-24 08:22:34,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:22:34,712 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-24 08:22:34,765 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 08:22:34,826 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 08:22:35,405 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 08:22:35,405 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 313 treesize of output 201 [2023-08-24 08:22:35,771 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:22:35,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:22:41,466 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse55 (* c_~j~0 4)) (.cse54 (* c_~i~0 4))) (let ((.cse16 (< 2147483647 (+ c_~bag1~0 c_~sum1~0))) (.cse17 (< (+ c_~bag1~0 c_~sum1~0 2147483648) 0)) (.cse6 (+ c_~A~0.offset .cse54)) (.cse8 (+ c_~A~0.offset .cse55)) (.cse9 (+ c_~A~0.offset .cse55 4)) (.cse7 (+ c_~A~0.offset .cse54 4)) (.cse0 (<= c_~N~0 (+ c_~i~0 1))) (.cse10 (< (+ 2 c_~i~0) c_~N~0)) (.cse18 (< (+ 2 c_~j~0) c_~N~0)) (.cse19 (<= c_~N~0 (+ c_~j~0 1)))) (and (or .cse0 (and (or (forall ((v_ArrVal_1057 (Array Int Int))) (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1057) c_~A~0.base))) (let ((.cse3 (select .cse5 .cse9)) (.cse1 (select .cse5 .cse8)) (.cse4 (select .cse5 .cse7)) (.cse2 (select .cse5 .cse6))) (or (< (+ c_~bag2~0 .cse1 2147483648) 0) (< (+ c_~bag1~0 .cse2 c_~sum1~0 2147483648) 0) (< 2147483647 (+ c_~bag2~0 .cse3 .cse1)) (< 2147483647 (+ c_~bag1~0 .cse2 c_~sum1~0)) (< 2147483647 (+ c_~bag2~0 .cse1)) (= (+ c_~bag1~0 .cse4 .cse2 c_~sum1~0) (+ c_~bag2~0 .cse3 c_~sum2~0 .cse1)) (< (+ c_~bag1~0 .cse2 2147483648) 0) (< (+ c_~bag2~0 .cse3 .cse1 2147483648) 0) (< (+ .cse4 .cse2 2147483648) 0) (< 2147483647 (+ c_~bag1~0 .cse2)) (< 2147483647 (+ .cse4 .cse2)))))) .cse10) (or (forall ((v_ArrVal_1057 (Array Int Int))) (let ((.cse15 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1057) c_~A~0.base))) (let ((.cse12 (select .cse15 .cse9)) (.cse11 (select .cse15 .cse8)) (.cse13 (select .cse15 .cse7)) (.cse14 (select .cse15 .cse6))) (or (< (+ c_~bag2~0 .cse11 2147483648) 0) (< 2147483647 (+ c_~bag2~0 .cse12 .cse11)) (< 2147483647 (+ c_~bag2~0 .cse11)) (= (+ c_~bag1~0 .cse13 .cse14 c_~sum1~0) (+ c_~bag2~0 .cse12 c_~sum2~0 .cse11)) (< c_~bag1~0 (+ .cse13 1)) (< (+ c_~bag2~0 .cse12 .cse11 2147483648) 0) (< (+ .cse13 .cse14 2147483648) 0) (< 2147483647 (+ c_~bag1~0 .cse14)))))) .cse10)) .cse16 .cse17 .cse18 .cse19) (or (< (+ c_~bag2~0 c_~sum2~0 2147483648) 0) (and (or .cse0 .cse16 (and (or (and (or .cse10 (forall ((v_ArrVal_1057 (Array Int Int))) (let ((.cse24 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1057) c_~A~0.base))) (let ((.cse20 (select .cse24 .cse9)) (.cse21 (select .cse24 .cse8)) (.cse22 (select .cse24 .cse7)) (.cse23 (select .cse24 .cse6))) (or (< c_~bag2~0 (+ .cse20 1)) (< 2147483647 (+ c_~bag2~0 .cse21)) (= (+ c_~bag1~0 .cse22 .cse23 c_~sum1~0) (+ c_~bag2~0 .cse20 c_~sum2~0 .cse21)) (< c_~bag1~0 (+ .cse22 1)) (< (+ .cse22 .cse23 2147483648) 0) (< 2147483647 (+ c_~bag1~0 .cse23))))))) (or (forall ((v_ArrVal_1057 (Array Int Int))) (let ((.cse29 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1057) c_~A~0.base))) (let ((.cse26 (select .cse29 .cse9)) (.cse27 (select .cse29 .cse8)) (.cse28 (select .cse29 .cse7)) (.cse25 (select .cse29 .cse6))) (or (< (+ c_~bag1~0 .cse25 c_~sum1~0 2147483648) 0) (< 2147483647 (+ c_~bag1~0 .cse25 c_~sum1~0)) (< c_~bag2~0 (+ .cse26 1)) (< 2147483647 (+ c_~bag2~0 .cse27)) (= (+ c_~bag1~0 .cse28 .cse25 c_~sum1~0) (+ c_~bag2~0 .cse26 c_~sum2~0 .cse27)) (< (+ c_~bag1~0 .cse25 2147483648) 0) (< (+ .cse28 .cse25 2147483648) 0) (< 2147483647 (+ c_~bag1~0 .cse25)))))) .cse10)) .cse18 .cse19) (or (and (or (forall ((v_ArrVal_1057 (Array Int Int))) (let ((.cse33 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1057) c_~A~0.base))) (let ((.cse30 (select .cse33 .cse8)) (.cse31 (select .cse33 .cse7)) (.cse32 (select .cse33 .cse6))) (or (< (+ c_~bag2~0 .cse30 2147483648) 0) (< 2147483647 (+ c_~bag2~0 .cse30)) (= (+ c_~bag1~0 .cse31 .cse32 c_~sum1~0) (+ c_~bag2~0 (select .cse33 .cse9) c_~sum2~0 .cse30)) (< c_~bag1~0 (+ .cse31 1)) (< 2147483647 (+ c_~bag2~0 c_~sum2~0 .cse30)) (< (+ c_~bag2~0 c_~sum2~0 .cse30 2147483648) 0) (< (+ .cse31 .cse32 2147483648) 0) (< 2147483647 (+ c_~bag1~0 .cse32)))))) .cse10) (or (forall ((v_ArrVal_1057 (Array Int Int))) (let ((.cse38 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1057) c_~A~0.base))) (let ((.cse36 (select .cse38 .cse7)) (.cse37 (select .cse38 .cse9)) (.cse34 (select .cse38 .cse8)) (.cse35 (select .cse38 .cse6))) (or (< (+ c_~bag2~0 .cse34 2147483648) 0) (< (+ c_~bag1~0 .cse35 c_~sum1~0 2147483648) 0) (< 2147483647 (+ c_~bag1~0 .cse35 c_~sum1~0)) (< 2147483647 (+ c_~bag2~0 .cse34)) (= (+ c_~bag1~0 .cse36 .cse35 c_~sum1~0) (+ c_~bag2~0 .cse37 c_~sum2~0 .cse34)) (< (+ c_~bag1~0 .cse35 2147483648) 0) (< 2147483647 (+ c_~bag2~0 c_~sum2~0 .cse34)) (< (+ c_~bag2~0 c_~sum2~0 .cse34 2147483648) 0) (< (+ .cse36 .cse35 2147483648) 0) (< 2147483647 (+ .cse37 .cse34)) (< 2147483647 (+ c_~bag1~0 .cse35)))))) .cse10)) .cse18 .cse19)) .cse17) (or (and (or .cse10 .cse18 (forall ((v_ArrVal_1057 (Array Int Int))) (let ((.cse43 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1057) c_~A~0.base))) (let ((.cse39 (select .cse43 .cse9)) (.cse40 (select .cse43 .cse8)) (.cse41 (select .cse43 .cse7)) (.cse42 (select .cse43 .cse6))) (or (< (+ .cse39 .cse40 2147483648) 0) (< (+ c_~bag1~0 .cse41 .cse42 2147483648) 0) (< c_~bag2~0 (+ .cse39 1)) (< 2147483647 (+ c_~bag2~0 .cse40)) (= (+ c_~bag1~0 .cse41 .cse42 c_~sum1~0) (+ c_~bag2~0 .cse39 c_~sum2~0 .cse40)) (< 2147483647 (+ c_~bag1~0 .cse41 .cse42)) (< (+ c_~bag1~0 .cse42 2147483648) 0) (< 2147483647 (+ c_~bag1~0 .cse42)))))) .cse19) (or (forall ((v_ArrVal_1057 (Array Int Int))) (let ((.cse48 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1057) c_~A~0.base))) (let ((.cse46 (select .cse48 .cse7)) (.cse45 (select .cse48 .cse9)) (.cse44 (select .cse48 .cse8)) (.cse47 (select .cse48 .cse6))) (or (< (+ c_~bag2~0 .cse44 2147483648) 0) (< (+ .cse45 .cse44 2147483648) 0) (< (+ c_~bag1~0 .cse46 .cse47 2147483648) 0) (< 2147483647 (+ c_~bag2~0 .cse44)) (= (+ c_~bag1~0 .cse46 .cse47 c_~sum1~0) (+ c_~bag2~0 .cse45 c_~sum2~0 .cse44)) (< 2147483647 (+ c_~bag1~0 .cse46 .cse47)) (< (+ c_~bag1~0 .cse47 2147483648) 0) (< 2147483647 (+ c_~bag2~0 c_~sum2~0 .cse44)) (< (+ c_~bag2~0 c_~sum2~0 .cse44 2147483648) 0) (< 2147483647 (+ .cse45 .cse44)) (< 2147483647 (+ c_~bag1~0 .cse47)))))) .cse10 .cse18 .cse19)) .cse0)) (< 2147483647 (+ c_~bag2~0 c_~sum2~0))) (or (forall ((v_ArrVal_1057 (Array Int Int))) (let ((.cse53 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1057) c_~A~0.base))) (let ((.cse50 (select .cse53 .cse7)) (.cse52 (select .cse53 .cse9)) (.cse49 (select .cse53 .cse8)) (.cse51 (select .cse53 .cse6))) (or (< (+ c_~bag2~0 .cse49 2147483648) 0) (< (+ c_~bag1~0 .cse50 .cse51 2147483648) 0) (< 2147483647 (+ c_~bag2~0 .cse52 .cse49)) (< 2147483647 (+ c_~bag2~0 .cse49)) (= (+ c_~bag1~0 .cse50 .cse51 c_~sum1~0) (+ c_~bag2~0 .cse52 c_~sum2~0 .cse49)) (< 2147483647 (+ c_~bag1~0 .cse50 .cse51)) (< (+ c_~bag1~0 .cse51 2147483648) 0) (< (+ c_~bag2~0 .cse52 .cse49 2147483648) 0) (< 2147483647 (+ c_~bag1~0 .cse51)))))) .cse0 .cse10 .cse18 .cse19)))) is different from false [2023-08-24 08:22:42,119 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 08:22:42,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638100790] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:22:42,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:22:42,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 11] total 36 [2023-08-24 08:22:42,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591508652] [2023-08-24 08:22:42,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:22:42,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-08-24 08:22:42,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:22:42,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-08-24 08:22:42,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1027, Unknown=1, NotChecked=68, Total=1332 [2023-08-24 08:22:42,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 752 [2023-08-24 08:22:42,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 637 places, 1957 transitions, 70337 flow. Second operand has 37 states, 37 states have (on average 232.48648648648648) internal successors, (8602), 37 states have internal predecessors, (8602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:22:42,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:22:42,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 752 [2023-08-24 08:22:42,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:23:05,801 INFO L124 PetriNetUnfolderBase]: 3711/6032 cut-off events. [2023-08-24 08:23:05,801 INFO L125 PetriNetUnfolderBase]: For 228647/228647 co-relation queries the response was YES. [2023-08-24 08:23:05,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95972 conditions, 6032 events. 3711/6032 cut-off events. For 228647/228647 co-relation queries the response was YES. Maximal size of possible extension queue 461. Compared 38077 event pairs, 23 based on Foata normal form. 13/6045 useless extension candidates. Maximal degree in co-relation 95839. Up to 2523 conditions per place. [2023-08-24 08:23:05,903 INFO L140 encePairwiseOnDemand]: 741/752 looper letters, 568 selfloop transitions, 1542 changer transitions 15/2125 dead transitions. [2023-08-24 08:23:05,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 688 places, 2125 transitions, 78905 flow [2023-08-24 08:23:05,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-08-24 08:23:05,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-08-24 08:23:05,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 12927 transitions. [2023-08-24 08:23:05,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125483558994197 [2023-08-24 08:23:05,914 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 12927 transitions. [2023-08-24 08:23:05,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 12927 transitions. [2023-08-24 08:23:05,915 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:23:05,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 12927 transitions. [2023-08-24 08:23:05,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 235.03636363636363) internal successors, (12927), 55 states have internal predecessors, (12927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:23:05,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 752.0) internal successors, (42112), 56 states have internal predecessors, (42112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:23:05,943 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 752.0) internal successors, (42112), 56 states have internal predecessors, (42112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:23:05,943 INFO L175 Difference]: Start difference. First operand has 637 places, 1957 transitions, 70337 flow. Second operand 55 states and 12927 transitions. [2023-08-24 08:23:05,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 688 places, 2125 transitions, 78905 flow [2023-08-24 08:23:11,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 663 places, 2125 transitions, 77873 flow, removed 137 selfloop flow, removed 25 redundant places. [2023-08-24 08:23:11,080 INFO L231 Difference]: Finished difference. Result has 673 places, 2045 transitions, 76367 flow [2023-08-24 08:23:11,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=69425, PETRI_DIFFERENCE_MINUEND_PLACES=609, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1957, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1455, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=486, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=76367, PETRI_PLACES=673, PETRI_TRANSITIONS=2045} [2023-08-24 08:23:11,082 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 653 predicate places. [2023-08-24 08:23:11,082 INFO L495 AbstractCegarLoop]: Abstraction has has 673 places, 2045 transitions, 76367 flow [2023-08-24 08:23:11,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 232.48648648648648) internal successors, (8602), 37 states have internal predecessors, (8602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:23:11,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:23:11,083 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:23:11,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-08-24 08:23:11,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-08-24 08:23:11,284 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:23:11,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:23:11,284 INFO L85 PathProgramCache]: Analyzing trace with hash 2020518899, now seen corresponding path program 29 times [2023-08-24 08:23:11,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:23:11,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669523029] [2023-08-24 08:23:11,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:23:11,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:23:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:23:18,492 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:23:18,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:23:18,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669523029] [2023-08-24 08:23:18,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669523029] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:23:18,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831499348] [2023-08-24 08:23:18,493 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 08:23:18,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:23:18,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:23:18,496 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:23:18,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-24 08:23:18,632 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-24 08:23:18,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:23:18,634 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 62 conjunts are in the unsatisfiable core [2023-08-24 08:23:18,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:23:18,682 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-24 08:23:18,725 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 08:23:18,769 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 08:23:19,323 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 08:23:19,323 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 225 treesize of output 153 [2023-08-24 08:23:19,421 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:23:19,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:23:24,857 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse54 (* c_~i~0 4)) (.cse53 (* c_~j~0 4))) (let ((.cse0 (< 2147483647 (+ c_~bag1~0 c_~sum1~0))) (.cse16 (< (+ c_~bag1~0 c_~sum1~0 2147483648) 0)) (.cse10 (< c_~i~0 c_~j~0)) (.cse6 (+ c_~A~0.offset .cse53)) (.cse8 (+ c_~A~0.offset .cse54)) (.cse9 (+ c_~A~0.offset .cse54 4)) (.cse7 (+ c_~A~0.offset .cse53 4)) (.cse11 (< c_~j~0 c_~i~0))) (and (or .cse0 (and (or (forall ((v_ArrVal_1095 (Array Int Int))) (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1095) c_~A~0.base))) (let ((.cse3 (select .cse5 .cse9)) (.cse4 (select .cse5 .cse8)) (.cse2 (select .cse5 .cse7)) (.cse1 (select .cse5 .cse6))) (or (< (+ c_~bag2~0 2147483648 .cse1) 0) (< 2147483647 (+ c_~bag2~0 .cse1)) (= (+ c_~bag2~0 .cse2 c_~sum2~0 .cse1) (+ c_~bag1~0 c_~sum1~0 .cse3 .cse4)) (< (+ .cse3 .cse4 2147483648) 0) (< (+ c_~bag2~0 .cse2 2147483648 .cse1) 0) (< 2147483647 (+ .cse3 .cse4)) (< 2147483647 (+ c_~bag2~0 .cse2 .cse1)))))) .cse10 .cse11) (or .cse10 (forall ((v_ArrVal_1095 (Array Int Int))) (let ((.cse15 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1095) c_~A~0.base))) (let ((.cse12 (select .cse15 .cse8)) (.cse14 (select .cse15 .cse7)) (.cse13 (select .cse15 .cse6))) (or (< 2147483647 (+ c_~bag1~0 c_~sum1~0 .cse12)) (< (+ c_~bag2~0 2147483648 .cse13) 0) (< 2147483647 (+ c_~bag2~0 .cse13)) (= (+ c_~bag2~0 .cse14 c_~sum2~0 .cse13) (+ c_~bag1~0 c_~sum1~0 (select .cse15 .cse9) .cse12)) (< (+ c_~bag2~0 .cse14 2147483648 .cse13) 0) (< (+ c_~bag1~0 c_~sum1~0 .cse12 2147483648) 0) (< 2147483647 (+ c_~bag2~0 .cse14 .cse13)))))) .cse11)) .cse16) (or .cse10 (forall ((v_ArrVal_1095 (Array Int Int))) (let ((.cse21 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1095) c_~A~0.base))) (let ((.cse18 (select .cse21 .cse9)) (.cse17 (select .cse21 .cse8)) (.cse20 (select .cse21 .cse7)) (.cse19 (select .cse21 .cse6))) (or (< (+ c_~bag1~0 .cse17 2147483648) 0) (< 2147483647 (+ c_~bag1~0 .cse18 .cse17)) (< (+ c_~bag1~0 .cse18 .cse17 2147483648) 0) (< (+ c_~bag2~0 2147483648 .cse19) 0) (< 2147483647 (+ c_~bag2~0 .cse19)) (= (+ c_~bag2~0 .cse20 c_~sum2~0 .cse19) (+ c_~bag1~0 c_~sum1~0 .cse18 .cse17)) (< 2147483647 (+ c_~bag1~0 .cse17)) (< (+ c_~bag2~0 .cse20 2147483648 .cse19) 0) (< 2147483647 (+ c_~bag2~0 .cse20 .cse19)))))) .cse11) (or (forall ((v_ArrVal_1095 (Array Int Int))) (let ((.cse25 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1095) c_~A~0.base))) (let ((.cse22 (select .cse25 .cse8)) (.cse24 (select .cse25 .cse7)) (.cse23 (select .cse25 .cse6))) (or (< (+ c_~bag1~0 .cse22 2147483648) 0) (< 2147483647 (+ c_~bag1~0 c_~sum1~0 .cse22)) (< (+ c_~bag2~0 2147483648 .cse23) 0) (< 2147483647 (+ c_~bag2~0 .cse23)) (= (+ c_~bag2~0 .cse24 c_~sum2~0 .cse23) (+ c_~bag1~0 c_~sum1~0 (select .cse25 .cse9) .cse22)) (< 2147483647 (+ c_~bag1~0 .cse22)) (< (+ c_~bag2~0 .cse24 2147483648 .cse23) 0) (< (+ c_~bag1~0 c_~sum1~0 .cse22 2147483648) 0) (< 2147483647 (+ c_~bag2~0 .cse24 .cse23)))))) .cse10 .cse11) (or (and (or .cse0 .cse16 (and (or .cse10 (forall ((v_ArrVal_1095 (Array Int Int))) (let ((.cse27 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1095) c_~A~0.base))) (let ((.cse26 (select .cse27 .cse6)) (.cse28 (select .cse27 .cse9)) (.cse29 (select .cse27 .cse8))) (or (< (+ c_~bag2~0 2147483648 .cse26) 0) (< 2147483647 (+ c_~bag2~0 .cse26)) (= (+ c_~bag2~0 (select .cse27 .cse7) c_~sum2~0 .cse26) (+ c_~bag1~0 c_~sum1~0 .cse28 .cse29)) (< (+ .cse28 .cse29 2147483648) 0) (< 2147483647 (+ c_~bag2~0 c_~sum2~0 .cse26)) (< (+ c_~bag2~0 c_~sum2~0 2147483648 .cse26) 0) (< 2147483647 (+ .cse28 .cse29)))))) .cse11) (or .cse10 (forall ((v_ArrVal_1095 (Array Int Int))) (let ((.cse34 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1095) c_~A~0.base))) (let ((.cse30 (select .cse34 .cse6)) (.cse32 (select .cse34 .cse9)) (.cse33 (select .cse34 .cse8)) (.cse31 (select .cse34 .cse7))) (or (< 2147483647 (+ c_~bag2~0 .cse30)) (= (+ c_~bag2~0 .cse31 c_~sum2~0 .cse30) (+ c_~bag1~0 c_~sum1~0 .cse32 .cse33)) (< (+ .cse32 .cse33 2147483648) 0) (< c_~bag2~0 (+ .cse31 1)))))) .cse11))) (or (forall ((v_ArrVal_1095 (Array Int Int))) (let ((.cse39 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1095) c_~A~0.base))) (let ((.cse38 (select .cse39 .cse6)) (.cse36 (select .cse39 .cse9)) (.cse35 (select .cse39 .cse8)) (.cse37 (select .cse39 .cse7))) (or (< (+ c_~bag1~0 .cse35 2147483648) 0) (< 2147483647 (+ c_~bag1~0 .cse36 .cse35)) (< (+ c_~bag1~0 .cse36 .cse35 2147483648) 0) (< (+ .cse37 2147483648 .cse38) 0) (< 2147483647 (+ c_~bag2~0 .cse38)) (= (+ c_~bag2~0 .cse37 c_~sum2~0 .cse38) (+ c_~bag1~0 c_~sum1~0 .cse36 .cse35)) (< 2147483647 (+ c_~bag1~0 .cse35)) (< c_~bag2~0 (+ .cse37 1)))))) .cse10 .cse11) (or .cse10 (forall ((v_ArrVal_1095 (Array Int Int))) (let ((.cse43 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1095) c_~A~0.base))) (let ((.cse41 (select .cse43 .cse7)) (.cse42 (select .cse43 .cse6)) (.cse40 (select .cse43 .cse8))) (or (< (+ c_~bag1~0 .cse40 2147483648) 0) (< 2147483647 (+ c_~bag1~0 c_~sum1~0 .cse40)) (< (+ .cse41 2147483648 .cse42) 0) (< 2147483647 (+ .cse41 .cse42)) (< (+ c_~bag2~0 2147483648 .cse42) 0) (< 2147483647 (+ c_~bag2~0 .cse42)) (= (+ c_~bag2~0 .cse41 c_~sum2~0 .cse42) (+ c_~bag1~0 c_~sum1~0 (select .cse43 .cse9) .cse40)) (< 2147483647 (+ c_~bag2~0 c_~sum2~0 .cse42)) (< 2147483647 (+ c_~bag1~0 .cse40)) (< (+ c_~bag2~0 c_~sum2~0 2147483648 .cse42) 0) (< (+ c_~bag1~0 c_~sum1~0 .cse40 2147483648) 0))))) .cse11) (or .cse10 .cse11 (forall ((v_ArrVal_1095 (Array Int Int))) (let ((.cse47 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1095) c_~A~0.base))) (let ((.cse46 (select .cse47 .cse6)) (.cse44 (select .cse47 .cse8)) (.cse45 (select .cse47 .cse7))) (or (< (+ c_~bag1~0 .cse44 2147483648) 0) (< 2147483647 (+ c_~bag1~0 c_~sum1~0 .cse44)) (< (+ .cse45 2147483648 .cse46) 0) (< 2147483647 (+ c_~bag2~0 .cse46)) (= (+ c_~bag2~0 .cse45 c_~sum2~0 .cse46) (+ c_~bag1~0 c_~sum1~0 (select .cse47 .cse9) .cse44)) (< 2147483647 (+ c_~bag1~0 .cse44)) (< (+ c_~bag1~0 c_~sum1~0 .cse44 2147483648) 0) (< c_~bag2~0 (+ .cse45 1))))))) (or .cse10 (forall ((v_ArrVal_1095 (Array Int Int))) (let ((.cse52 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1095) c_~A~0.base))) (let ((.cse50 (select .cse52 .cse7)) (.cse49 (select .cse52 .cse9)) (.cse48 (select .cse52 .cse8)) (.cse51 (select .cse52 .cse6))) (or (< (+ c_~bag1~0 .cse48 2147483648) 0) (< 2147483647 (+ c_~bag1~0 .cse49 .cse48)) (< (+ c_~bag1~0 .cse49 .cse48 2147483648) 0) (< (+ .cse50 2147483648 .cse51) 0) (< 2147483647 (+ .cse50 .cse51)) (< (+ c_~bag2~0 2147483648 .cse51) 0) (< 2147483647 (+ c_~bag2~0 .cse51)) (= (+ c_~bag2~0 .cse50 c_~sum2~0 .cse51) (+ c_~bag1~0 c_~sum1~0 .cse49 .cse48)) (< 2147483647 (+ c_~bag2~0 c_~sum2~0 .cse51)) (< 2147483647 (+ c_~bag1~0 .cse48)) (< (+ c_~bag2~0 c_~sum2~0 2147483648 .cse51) 0))))) .cse11)) (< (+ c_~bag2~0 c_~sum2~0 2147483648) 0) (< 2147483647 (+ c_~bag2~0 c_~sum2~0)))))) is different from false [2023-08-24 08:23:25,504 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 08:23:25,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831499348] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:23:25,504 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:23:25,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 10] total 32 [2023-08-24 08:23:25,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614847556] [2023-08-24 08:23:25,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:23:25,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-24 08:23:25,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:23:25,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-24 08:23:25,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=822, Unknown=1, NotChecked=60, Total=1056 [2023-08-24 08:23:25,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 752 [2023-08-24 08:23:25,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 673 places, 2045 transitions, 76367 flow. Second operand has 33 states, 33 states have (on average 232.6969696969697) internal successors, (7679), 33 states have internal predecessors, (7679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:23:25,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:23:25,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 752 [2023-08-24 08:23:25,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:23:39,913 INFO L124 PetriNetUnfolderBase]: 3922/6351 cut-off events. [2023-08-24 08:23:39,913 INFO L125 PetriNetUnfolderBase]: For 246904/246904 co-relation queries the response was YES. [2023-08-24 08:23:39,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105054 conditions, 6351 events. 3922/6351 cut-off events. For 246904/246904 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 40144 event pairs, 50 based on Foata normal form. 9/6360 useless extension candidates. Maximal degree in co-relation 104915. Up to 2460 conditions per place. [2023-08-24 08:23:40,018 INFO L140 encePairwiseOnDemand]: 742/752 looper letters, 612 selfloop transitions, 1602 changer transitions 24/2238 dead transitions. [2023-08-24 08:23:40,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 717 places, 2238 transitions, 86332 flow [2023-08-24 08:23:40,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-08-24 08:23:40,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-08-24 08:23:40,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 11316 transitions. [2023-08-24 08:23:40,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3134973404255319 [2023-08-24 08:23:40,024 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 11316 transitions. [2023-08-24 08:23:40,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 11316 transitions. [2023-08-24 08:23:40,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:23:40,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 11316 transitions. [2023-08-24 08:23:40,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 235.75) internal successors, (11316), 48 states have internal predecessors, (11316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:23:40,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 752.0) internal successors, (36848), 49 states have internal predecessors, (36848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:23:40,046 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 752.0) internal successors, (36848), 49 states have internal predecessors, (36848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:23:40,046 INFO L175 Difference]: Start difference. First operand has 673 places, 2045 transitions, 76367 flow. Second operand 48 states and 11316 transitions. [2023-08-24 08:23:40,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 717 places, 2238 transitions, 86332 flow [2023-08-24 08:23:46,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 694 places, 2238 transitions, 85776 flow, removed 191 selfloop flow, removed 23 redundant places. [2023-08-24 08:23:46,204 INFO L231 Difference]: Finished difference. Result has 703 places, 2144 transitions, 85394 flow [2023-08-24 08:23:46,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=75867, PETRI_DIFFERENCE_MINUEND_PLACES=647, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2045, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1497, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=85394, PETRI_PLACES=703, PETRI_TRANSITIONS=2144} [2023-08-24 08:23:46,206 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 683 predicate places. [2023-08-24 08:23:46,206 INFO L495 AbstractCegarLoop]: Abstraction has has 703 places, 2144 transitions, 85394 flow [2023-08-24 08:23:46,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 232.6969696969697) internal successors, (7679), 33 states have internal predecessors, (7679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:23:46,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:23:46,207 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:23:46,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-08-24 08:23:46,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:23:46,407 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:23:46,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:23:46,408 INFO L85 PathProgramCache]: Analyzing trace with hash 663544719, now seen corresponding path program 30 times [2023-08-24 08:23:46,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:23:46,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630110081] [2023-08-24 08:23:46,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:23:46,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:23:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:23:50,240 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:23:50,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:23:50,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630110081] [2023-08-24 08:23:50,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630110081] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:23:50,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124336833] [2023-08-24 08:23:50,241 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 08:23:50,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:23:50,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:23:50,245 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:23:50,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-08-24 08:23:50,386 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-24 08:23:50,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:23:50,388 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 65 conjunts are in the unsatisfiable core [2023-08-24 08:23:50,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:23:50,447 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-24 08:23:50,491 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 08:23:50,554 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 08:23:51,019 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 08:23:51,019 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 253 treesize of output 173 [2023-08-24 08:23:51,339 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:23:51,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:24:02,384 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 08:24:02,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [124336833] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:24:02,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:24:02,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 10] total 32 [2023-08-24 08:24:02,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870233347] [2023-08-24 08:24:02,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:24:02,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-24 08:24:02,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:24:02,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-24 08:24:02,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=866, Unknown=4, NotChecked=0, Total=1056 [2023-08-24 08:24:02,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 752 [2023-08-24 08:24:02,390 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 703 places, 2144 transitions, 85394 flow. Second operand has 33 states, 33 states have (on average 232.6060606060606) internal successors, (7676), 33 states have internal predecessors, (7676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:24:02,390 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:24:02,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 752 [2023-08-24 08:24:02,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:24:14,512 WARN L234 SmtUtils]: Spent 8.00s on a formula simplification. DAG size of input: 301 DAG size of output: 197 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 08:24:37,826 WARN L234 SmtUtils]: Spent 5.09s on a formula simplification that was a NOOP. DAG size: 267 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 08:24:58,058 INFO L124 PetriNetUnfolderBase]: 4174/6732 cut-off events. [2023-08-24 08:24:58,058 INFO L125 PetriNetUnfolderBase]: For 288766/288766 co-relation queries the response was YES. [2023-08-24 08:24:58,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118246 conditions, 6732 events. 4174/6732 cut-off events. For 288766/288766 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 42525 event pairs, 23 based on Foata normal form. 17/6749 useless extension candidates. Maximal degree in co-relation 118101. Up to 2939 conditions per place. [2023-08-24 08:24:58,185 INFO L140 encePairwiseOnDemand]: 742/752 looper letters, 1045 selfloop transitions, 1330 changer transitions 13/2388 dead transitions. [2023-08-24 08:24:58,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 744 places, 2388 transitions, 98064 flow [2023-08-24 08:24:58,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-08-24 08:24:58,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-08-24 08:24:58,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 10374 transitions. [2023-08-24 08:24:58,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31352756286266925 [2023-08-24 08:24:58,193 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 10374 transitions. [2023-08-24 08:24:58,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 10374 transitions. [2023-08-24 08:24:58,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:24:58,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 10374 transitions. [2023-08-24 08:24:58,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 235.77272727272728) internal successors, (10374), 44 states have internal predecessors, (10374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:24:58,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 752.0) internal successors, (33840), 45 states have internal predecessors, (33840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:24:58,213 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 752.0) internal successors, (33840), 45 states have internal predecessors, (33840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:24:58,214 INFO L175 Difference]: Start difference. First operand has 703 places, 2144 transitions, 85394 flow. Second operand 44 states and 10374 transitions. [2023-08-24 08:24:58,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 744 places, 2388 transitions, 98064 flow [2023-08-24 08:25:05,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 717 places, 2388 transitions, 96377 flow, removed 357 selfloop flow, removed 27 redundant places. [2023-08-24 08:25:05,766 INFO L231 Difference]: Finished difference. Result has 726 places, 2287 transitions, 93778 flow [2023-08-24 08:25:05,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=83217, PETRI_DIFFERENCE_MINUEND_PLACES=674, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=882, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=93778, PETRI_PLACES=726, PETRI_TRANSITIONS=2287} [2023-08-24 08:25:05,768 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 706 predicate places. [2023-08-24 08:25:05,768 INFO L495 AbstractCegarLoop]: Abstraction has has 726 places, 2287 transitions, 93778 flow [2023-08-24 08:25:05,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 232.6060606060606) internal successors, (7676), 33 states have internal predecessors, (7676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:25:05,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:25:05,769 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:25:05,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-08-24 08:25:05,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:25:05,975 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:25:05,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:25:05,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1112110689, now seen corresponding path program 31 times [2023-08-24 08:25:05,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:25:05,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678942929] [2023-08-24 08:25:05,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:25:05,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:25:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:25:07,998 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:25:07,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:25:07,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678942929] [2023-08-24 08:25:07,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678942929] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:25:07,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659150529] [2023-08-24 08:25:07,998 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 08:25:07,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:25:07,998 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:25:07,999 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:25:08,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-08-24 08:25:08,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:25:08,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 81 conjunts are in the unsatisfiable core [2023-08-24 08:25:08,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:25:08,895 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 08:25:08,895 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 286 treesize of output 190 [2023-08-24 08:25:09,303 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:25:09,303 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:25:12,756 INFO L322 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2023-08-24 08:25:12,756 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 944 treesize of output 380 [2023-08-24 08:25:19,316 INFO L322 Elim1Store]: treesize reduction 10, result has 73.0 percent of original size [2023-08-24 08:25:19,316 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 578 treesize of output 242 [2023-08-24 08:25:24,870 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 08:25:24,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659150529] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:25:24,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:25:24,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 10] total 33 [2023-08-24 08:25:24,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455312739] [2023-08-24 08:25:24,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:25:24,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-08-24 08:25:24,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:25:24,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-08-24 08:25:24,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=939, Unknown=0, NotChecked=0, Total=1122 [2023-08-24 08:25:24,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 752 [2023-08-24 08:25:24,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 726 places, 2287 transitions, 93778 flow. Second operand has 34 states, 34 states have (on average 239.61764705882354) internal successors, (8147), 34 states have internal predecessors, (8147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:25:24,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:25:24,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 752 [2023-08-24 08:25:24,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:25:49,248 INFO L124 PetriNetUnfolderBase]: 4513/7261 cut-off events. [2023-08-24 08:25:49,249 INFO L125 PetriNetUnfolderBase]: For 339445/339445 co-relation queries the response was YES. [2023-08-24 08:25:49,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130761 conditions, 7261 events. 4513/7261 cut-off events. For 339445/339445 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 46320 event pairs, 111 based on Foata normal form. 5/7266 useless extension candidates. Maximal degree in co-relation 130612. Up to 3442 conditions per place. [2023-08-24 08:25:49,375 INFO L140 encePairwiseOnDemand]: 742/752 looper letters, 732 selfloop transitions, 1842 changer transitions 9/2583 dead transitions. [2023-08-24 08:25:49,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 778 places, 2583 transitions, 108726 flow [2023-08-24 08:25:49,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-08-24 08:25:49,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-08-24 08:25:49,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 13331 transitions. [2023-08-24 08:25:49,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.322316247582205 [2023-08-24 08:25:49,383 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 13331 transitions. [2023-08-24 08:25:49,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 13331 transitions. [2023-08-24 08:25:49,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:25:49,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 13331 transitions. [2023-08-24 08:25:49,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 242.38181818181818) internal successors, (13331), 55 states have internal predecessors, (13331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:25:49,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 752.0) internal successors, (42112), 56 states have internal predecessors, (42112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:25:49,409 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 752.0) internal successors, (42112), 56 states have internal predecessors, (42112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:25:49,409 INFO L175 Difference]: Start difference. First operand has 726 places, 2287 transitions, 93778 flow. Second operand 55 states and 13331 transitions. [2023-08-24 08:25:49,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 778 places, 2583 transitions, 108726 flow [2023-08-24 08:25:58,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 760 places, 2583 transitions, 107075 flow, removed 157 selfloop flow, removed 18 redundant places. [2023-08-24 08:25:58,654 INFO L231 Difference]: Finished difference. Result has 770 places, 2494 transitions, 107219 flow [2023-08-24 08:25:58,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=752, PETRI_DIFFERENCE_MINUEND_FLOW=92259, PETRI_DIFFERENCE_MINUEND_PLACES=706, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1646, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=598, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=107219, PETRI_PLACES=770, PETRI_TRANSITIONS=2494} [2023-08-24 08:25:58,657 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 750 predicate places. [2023-08-24 08:25:58,657 INFO L495 AbstractCegarLoop]: Abstraction has has 770 places, 2494 transitions, 107219 flow [2023-08-24 08:25:58,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 239.61764705882354) internal successors, (8147), 34 states have internal predecessors, (8147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:25:58,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:25:58,658 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:25:58,663 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-08-24 08:25:58,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-08-24 08:25:58,863 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:25:58,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:25:58,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1090327411, now seen corresponding path program 32 times [2023-08-24 08:25:58,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:25:58,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946155003] [2023-08-24 08:25:58,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:25:58,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:25:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:26:08,332 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:26:08,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:26:08,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946155003] [2023-08-24 08:26:08,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946155003] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:26:08,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874776099] [2023-08-24 08:26:08,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 08:26:08,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:26:08,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:26:08,333 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:26:08,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-08-24 08:26:08,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 08:26:08,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:26:08,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 78 conjunts are in the unsatisfiable core [2023-08-24 08:26:08,478 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:26:09,185 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 08:26:09,185 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 313 treesize of output 201 [2023-08-24 08:26:09,536 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:26:09,536 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:26:12,198 INFO L322 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2023-08-24 08:26:12,199 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1051 treesize of output 549 [2023-08-24 08:26:27,680 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 08:26:27,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874776099] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:26:27,680 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:26:27,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 10] total 34 [2023-08-24 08:26:27,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12138231] [2023-08-24 08:26:27,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:26:27,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-24 08:26:27,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:26:27,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-24 08:26:27,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1005, Unknown=0, NotChecked=0, Total=1190 [2023-08-24 08:26:27,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 752 [2023-08-24 08:26:27,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 770 places, 2494 transitions, 107219 flow. Second operand has 35 states, 35 states have (on average 232.57142857142858) internal successors, (8140), 35 states have internal predecessors, (8140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:26:27,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:26:27,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 752 [2023-08-24 08:26:27,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-24 08:26:46,551 WARN L266 SmtUtils]: Removed 11 from assertion stack [2023-08-24 08:26:46,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-08-24 08:26:46,552 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-24 08:26:46,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-08-24 08:26:46,597 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 08:26:46,597 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 08:26:46,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-24 08:26:46,753 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 78 for 102ms.. [2023-08-24 08:26:46,754 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-24 08:26:46,754 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-24 08:26:46,754 INFO L445 BasicCegarLoop]: Path program histogram: [32, 2, 1, 1, 1, 1] [2023-08-24 08:26:46,757 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 08:26:46,757 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 08:26:46,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 08:26:46 BasicIcfg [2023-08-24 08:26:46,759 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 08:26:46,759 INFO L158 Benchmark]: Toolchain (without parser) took 765294.72ms. Allocated memory was 381.7MB in the beginning and 3.3GB in the end (delta: 2.9GB). Free memory was 358.2MB in the beginning and 518.9MB in the end (delta: -160.7MB). Peak memory consumption was 2.8GB. Max. memory is 16.0GB. [2023-08-24 08:26:46,759 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 381.7MB. Free memory is still 358.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 08:26:46,759 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.45ms. Allocated memory is still 381.7MB. Free memory was 357.7MB in the beginning and 345.9MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 08:26:46,760 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.25ms. Allocated memory is still 381.7MB. Free memory was 345.9MB in the beginning and 343.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 08:26:46,760 INFO L158 Benchmark]: Boogie Preprocessor took 52.61ms. Allocated memory is still 381.7MB. Free memory was 343.3MB in the beginning and 341.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 08:26:46,760 INFO L158 Benchmark]: RCFGBuilder took 567.40ms. Allocated memory is still 381.7MB. Free memory was 341.2MB in the beginning and 316.0MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-24 08:26:46,760 INFO L158 Benchmark]: TraceAbstraction took 764412.31ms. Allocated memory was 381.7MB in the beginning and 3.3GB in the end (delta: 2.9GB). Free memory was 315.5MB in the beginning and 518.9MB in the end (delta: -203.4MB). Peak memory consumption was 2.7GB. Max. memory is 16.0GB. [2023-08-24 08:26:46,761 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 381.7MB. Free memory is still 358.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 217.45ms. Allocated memory is still 381.7MB. Free memory was 357.7MB in the beginning and 345.9MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 40.25ms. Allocated memory is still 381.7MB. Free memory was 345.9MB in the beginning and 343.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 52.61ms. Allocated memory is still 381.7MB. Free memory was 343.3MB in the beginning and 341.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 567.40ms. Allocated memory is still 381.7MB. Free memory was 341.2MB in the beginning and 316.0MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 764412.31ms. Allocated memory was 381.7MB in the beginning and 3.3GB in the end (delta: 2.9GB). Free memory was 315.5MB in the beginning and 518.9MB in the end (delta: -203.4MB). Peak memory consumption was 2.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 9.7s, 316 PlacesBefore, 20 PlacesAfterwards, 337 TransitionsBefore, 16 TransitionsAfterwards, 25652 CoEnabledTransitionPairs, 7 FixpointIterations, 100 TrivialSequentialCompositions, 194 ConcurrentSequentialCompositions, 14 TrivialYvCompositions, 72 ConcurrentYvCompositions, 25 ChoiceCompositions, 405 TotalNumberOfCompositions, 21888 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 21645, independent: 21625, independent conditional: 0, independent unconditional: 21625, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 15283, independent: 15270, independent conditional: 0, independent unconditional: 15270, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 21645, independent: 6355, independent conditional: 0, independent unconditional: 6355, dependent: 7, dependent conditional: 0, dependent unconditional: 7, unknown: 15283, unknown conditional: 0, unknown unconditional: 15283] , Statistics on independence cache: Total cache size (in pairs): 20, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 78 for 102ms.. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 78 for 102ms.. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 78 for 102ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 514 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 764.2s, OverallIterations: 38, TraceHistogramMax: 2, PathProgramHistogramMax: 32, EmptinessCheckTime: 0.0s, AutomataDifference: 412.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.9s, HoareTripleCheckerStatistics: 58 mSolverCounterUnknown, 6496 SdHoareTripleChecker+Valid, 29.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6496 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 27.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1281 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1998 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 28475 IncrementalHoareTripleChecker+Invalid, 31812 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1998 mSolverCounterUnsat, 0 mSDtfsCounter, 28475 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2519 GetRequests, 656 SyntacticMatches, 38 SemanticMatches, 1824 ConstructedPredicates, 8 IntricatePredicates, 2 DeprecatedPredicates, 33301 ImplicationChecksByTransitivity, 327.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107219occurred in iteration=37, InterpolantAutomatonStates: 1121, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 4.4s SatisfiabilityAnalysisTime, 327.6s InterpolantComputationTime, 1303 NumberOfCodeBlocks, 1303 NumberOfCodeBlocksAsserted, 112 NumberOfCheckSat, 1822 ConstructedInterpolants, 42 QuantifiedInterpolants, 183490 SizeOfPredicates, 2215 NumberOfNonLiveVariables, 8367 ConjunctsInSsa, 2010 ConjunctsInUnsatCore, 106 InterpolantComputations, 6 PerfectInterpolantSequences, 117/744 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown