/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/triangular-longest-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:16:46,656 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:16:46,745 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 11:16:46,782 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:16:46,783 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:16:46,784 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:16:46,784 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:16:46,785 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:16:46,785 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:16:46,789 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:16:46,789 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:16:46,789 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:16:46,789 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:16:46,790 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:16:46,791 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:16:46,791 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:16:46,791 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:16:46,791 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:16:46,791 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:16:46,792 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:16:46,792 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:16:46,793 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:16:46,793 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:16:46,793 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:16:46,793 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:16:46,793 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:16:46,794 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:16:46,794 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:16:46,794 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:16:46,794 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:16:46,795 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:16:46,795 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:16:46,796 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:16:47,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:16:47,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:16:47,065 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:16:47,066 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:16:47,067 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:16:47,069 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-2.i [2023-11-17 11:16:48,228 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:16:48,419 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:16:48,420 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i [2023-11-17 11:16:48,435 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22b2fc449/1c188e63089f4b18ad43c73e75e4a0a5/FLAGe097b41ff [2023-11-17 11:16:48,448 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22b2fc449/1c188e63089f4b18ad43c73e75e4a0a5 [2023-11-17 11:16:48,450 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:16:48,451 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:16:48,452 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:16:48,452 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:16:48,456 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:16:48,457 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:16:48" (1/1) ... [2023-11-17 11:16:48,458 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@292590bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:16:48, skipping insertion in model container [2023-11-17 11:16:48,458 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:16:48" (1/1) ... [2023-11-17 11:16:48,507 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:16:48,835 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i[30964,30977] [2023-11-17 11:16:48,840 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:16:48,852 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:16:48,905 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-2.i[30964,30977] [2023-11-17 11:16:48,906 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:16:48,932 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:16:48,933 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:16:48,940 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:16:48,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:16:48 WrapperNode [2023-11-17 11:16:48,940 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:16:48,941 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:16:48,941 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:16:48,941 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:16:48,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:16:48" (1/1) ... [2023-11-17 11:16:48,960 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:16:48" (1/1) ... [2023-11-17 11:16:48,982 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 46 [2023-11-17 11:16:48,982 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:16:48,983 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:16:48,983 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:16:48,983 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:16:48,992 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:16:48" (1/1) ... [2023-11-17 11:16:48,993 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:16:48" (1/1) ... [2023-11-17 11:16:48,995 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:16:48" (1/1) ... [2023-11-17 11:16:48,995 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:16:48" (1/1) ... [2023-11-17 11:16:49,000 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:16:48" (1/1) ... [2023-11-17 11:16:49,010 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:16:48" (1/1) ... [2023-11-17 11:16:49,011 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:16:48" (1/1) ... [2023-11-17 11:16:49,012 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:16:48" (1/1) ... [2023-11-17 11:16:49,014 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:16:49,015 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:16:49,015 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:16:49,015 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:16:49,016 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:16:48" (1/1) ... [2023-11-17 11:16:49,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:16:49,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:16:49,060 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 11:16:49,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 11:16:49,092 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-17 11:16:49,092 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-17 11:16:49,092 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-17 11:16:49,093 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-17 11:16:49,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:16:49,093 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 11:16:49,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:16:49,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:16:49,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:16:49,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:16:49,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 11:16:49,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:16:49,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:16:49,096 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 11:16:49,205 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:16:49,207 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:16:49,338 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:16:49,439 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:16:49,439 INFO L307 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-17 11:16:49,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:16:49 BoogieIcfgContainer [2023-11-17 11:16:49,441 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:16:49,443 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:16:49,443 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:16:49,446 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:16:49,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:16:48" (1/3) ... [2023-11-17 11:16:49,447 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38db6018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:16:49, skipping insertion in model container [2023-11-17 11:16:49,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:16:48" (2/3) ... [2023-11-17 11:16:49,447 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38db6018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:16:49, skipping insertion in model container [2023-11-17 11:16:49,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:16:49" (3/3) ... [2023-11-17 11:16:49,449 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-2.i [2023-11-17 11:16:49,469 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:16:49,470 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 11:16:49,470 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:16:49,520 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 11:16:49,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 56 flow [2023-11-17 11:16:49,575 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2023-11-17 11:16:49,576 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:16:49,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 22 events. 3/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2023-11-17 11:16:49,580 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions, 56 flow [2023-11-17 11:16:49,583 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 22 transitions, 50 flow [2023-11-17 11:16:49,586 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:16:49,596 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 26 places, 22 transitions, 50 flow [2023-11-17 11:16:49,599 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 26 places, 22 transitions, 50 flow [2023-11-17 11:16:49,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 22 transitions, 50 flow [2023-11-17 11:16:49,609 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2023-11-17 11:16:49,609 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:16:49,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 22 events. 3/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 30 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2023-11-17 11:16:49,612 INFO L119 LiptonReduction]: Number of co-enabled transitions 230 [2023-11-17 11:16:49,921 INFO L134 LiptonReduction]: Checked pairs total: 219 [2023-11-17 11:16:49,921 INFO L136 LiptonReduction]: Total number of compositions: 12 [2023-11-17 11:16:49,946 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:16:49,952 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7f7d6a9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:16:49,952 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 11:16:49,961 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:16:49,961 INFO L124 PetriNetUnfolderBase]: 2/11 cut-off events. [2023-11-17 11:16:49,962 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:16:49,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:16:49,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-17 11:16:49,963 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:16:49,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:16:49,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1048666412, now seen corresponding path program 1 times [2023-11-17 11:16:49,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:16:49,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696108268] [2023-11-17 11:16:49,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:16:49,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:16:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:16:50,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:16:50,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:16:50,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696108268] [2023-11-17 11:16:50,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696108268] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:16:50,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:16:50,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:16:50,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481180028] [2023-11-17 11:16:50,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:16:50,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:16:50,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:16:50,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:16:50,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:16:50,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:16:50,433 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 32 flow. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:50,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:16:50,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:16:50,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:16:50,527 INFO L124 PetriNetUnfolderBase]: 94/152 cut-off events. [2023-11-17 11:16:50,528 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-17 11:16:50,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 152 events. 94/152 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 389 event pairs, 23 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 306. Up to 76 conditions per place. [2023-11-17 11:16:50,533 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 18 selfloop transitions, 4 changer transitions 4/26 dead transitions. [2023-11-17 11:16:50,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 26 transitions, 110 flow [2023-11-17 11:16:50,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:16:50,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:16:50,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 47 transitions. [2023-11-17 11:16:50,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3263888888888889 [2023-11-17 11:16:50,548 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 47 transitions. [2023-11-17 11:16:50,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 47 transitions. [2023-11-17 11:16:50,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:16:50,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 47 transitions. [2023-11-17 11:16:50,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:50,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:50,559 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 36.0) internal successors, (180), 5 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:50,561 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 32 flow. Second operand 4 states and 47 transitions. [2023-11-17 11:16:50,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 26 transitions, 110 flow [2023-11-17 11:16:50,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 26 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:16:50,570 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 53 flow [2023-11-17 11:16:50,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=53, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-11-17 11:16:50,576 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 3 predicate places. [2023-11-17 11:16:50,576 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 53 flow [2023-11-17 11:16:50,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:50,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:16:50,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:16:50,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:16:50,577 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:16:50,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:16:50,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1549308775, now seen corresponding path program 1 times [2023-11-17 11:16:50,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:16:50,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188585970] [2023-11-17 11:16:50,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:16:50,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:16:50,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:16:50,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:16:50,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:16:50,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188585970] [2023-11-17 11:16:50,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188585970] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:16:50,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:16:50,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:16:50,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368911994] [2023-11-17 11:16:50,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:16:50,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:16:50,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:16:50,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:16:50,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:16:50,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:16:50,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 53 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:50,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:16:50,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:16:50,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:16:50,832 INFO L124 PetriNetUnfolderBase]: 126/217 cut-off events. [2023-11-17 11:16:50,832 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2023-11-17 11:16:50,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 217 events. 126/217 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 657 event pairs, 19 based on Foata normal form. 10/191 useless extension candidates. Maximal degree in co-relation 535. Up to 89 conditions per place. [2023-11-17 11:16:50,835 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 33 selfloop transitions, 9 changer transitions 0/42 dead transitions. [2023-11-17 11:16:50,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 42 transitions, 215 flow [2023-11-17 11:16:50,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:16:50,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:16:50,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2023-11-17 11:16:50,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3148148148148148 [2023-11-17 11:16:50,839 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 68 transitions. [2023-11-17 11:16:50,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 68 transitions. [2023-11-17 11:16:50,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:16:50,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 68 transitions. [2023-11-17 11:16:50,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:50,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 36.0) internal successors, (252), 7 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:50,844 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 36.0) internal successors, (252), 7 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:50,844 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 53 flow. Second operand 6 states and 68 transitions. [2023-11-17 11:16:50,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 42 transitions, 215 flow [2023-11-17 11:16:50,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 42 transitions, 215 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 11:16:50,848 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 134 flow [2023-11-17 11:16:50,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=134, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2023-11-17 11:16:50,849 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 11 predicate places. [2023-11-17 11:16:50,849 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 134 flow [2023-11-17 11:16:50,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:50,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:16:50,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:16:50,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:16:50,850 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:16:50,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:16:50,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1549307845, now seen corresponding path program 2 times [2023-11-17 11:16:50,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:16:50,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510793813] [2023-11-17 11:16:50,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:16:50,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:16:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:16:50,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:16:50,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:16:50,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510793813] [2023-11-17 11:16:50,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510793813] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:16:50,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:16:50,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:16:50,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537516171] [2023-11-17 11:16:50,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:16:50,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:16:50,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:16:50,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:16:50,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:16:50,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:16:50,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:50,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:16:50,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:16:50,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:16:51,089 INFO L124 PetriNetUnfolderBase]: 114/199 cut-off events. [2023-11-17 11:16:51,089 INFO L125 PetriNetUnfolderBase]: For 277/277 co-relation queries the response was YES. [2023-11-17 11:16:51,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 199 events. 114/199 cut-off events. For 277/277 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 629 event pairs, 19 based on Foata normal form. 10/209 useless extension candidates. Maximal degree in co-relation 636. Up to 84 conditions per place. [2023-11-17 11:16:51,094 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 29 selfloop transitions, 9 changer transitions 4/42 dead transitions. [2023-11-17 11:16:51,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 284 flow [2023-11-17 11:16:51,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:16:51,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:16:51,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 58 transitions. [2023-11-17 11:16:51,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32222222222222224 [2023-11-17 11:16:51,096 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 58 transitions. [2023-11-17 11:16:51,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 58 transitions. [2023-11-17 11:16:51,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:16:51,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 58 transitions. [2023-11-17 11:16:51,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:51,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:51,099 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 36.0) internal successors, (216), 6 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:51,099 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 134 flow. Second operand 5 states and 58 transitions. [2023-11-17 11:16:51,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 284 flow [2023-11-17 11:16:51,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 42 transitions, 282 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-17 11:16:51,105 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 182 flow [2023-11-17 11:16:51,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=182, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2023-11-17 11:16:51,106 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 17 predicate places. [2023-11-17 11:16:51,106 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 182 flow [2023-11-17 11:16:51,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:51,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:16:51,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:16:51,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 11:16:51,107 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:16:51,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:16:51,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1282021618, now seen corresponding path program 1 times [2023-11-17 11:16:51,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:16:51,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354570221] [2023-11-17 11:16:51,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:16:51,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:16:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:16:51,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:16:51,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:16:51,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354570221] [2023-11-17 11:16:51,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354570221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:16:51,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:16:51,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:16:51,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054849275] [2023-11-17 11:16:51,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:16:51,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:16:51,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:16:51,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:16:51,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-17 11:16:51,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:16:51,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:51,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:16:51,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:16:51,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:16:51,368 INFO L124 PetriNetUnfolderBase]: 136/239 cut-off events. [2023-11-17 11:16:51,368 INFO L125 PetriNetUnfolderBase]: For 556/556 co-relation queries the response was YES. [2023-11-17 11:16:51,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 239 events. 136/239 cut-off events. For 556/556 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 801 event pairs, 31 based on Foata normal form. 4/243 useless extension candidates. Maximal degree in co-relation 842. Up to 101 conditions per place. [2023-11-17 11:16:51,371 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 30 selfloop transitions, 16 changer transitions 8/54 dead transitions. [2023-11-17 11:16:51,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 54 transitions, 419 flow [2023-11-17 11:16:51,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:16:51,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:16:51,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 76 transitions. [2023-11-17 11:16:51,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30158730158730157 [2023-11-17 11:16:51,374 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 76 transitions. [2023-11-17 11:16:51,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 76 transitions. [2023-11-17 11:16:51,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:16:51,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 76 transitions. [2023-11-17 11:16:51,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:51,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 36.0) internal successors, (288), 8 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:51,376 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 36.0) internal successors, (288), 8 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:51,377 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 182 flow. Second operand 7 states and 76 transitions. [2023-11-17 11:16:51,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 54 transitions, 419 flow [2023-11-17 11:16:51,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 54 transitions, 379 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-11-17 11:16:51,383 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 269 flow [2023-11-17 11:16:51,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=269, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2023-11-17 11:16:51,385 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 22 predicate places. [2023-11-17 11:16:51,385 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 269 flow [2023-11-17 11:16:51,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:51,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:16:51,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:16:51,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 11:16:51,386 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:16:51,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:16:51,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1281993718, now seen corresponding path program 2 times [2023-11-17 11:16:51,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:16:51,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303675730] [2023-11-17 11:16:51,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:16:51,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:16:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:16:51,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:16:51,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:16:51,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303675730] [2023-11-17 11:16:51,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303675730] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:16:51,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:16:51,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:16:51,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586596590] [2023-11-17 11:16:51,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:16:51,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:16:51,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:16:51,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:16:51,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 11:16:51,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:16:51,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 269 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:51,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:16:51,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:16:51,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:16:51,654 INFO L124 PetriNetUnfolderBase]: 172/303 cut-off events. [2023-11-17 11:16:51,656 INFO L125 PetriNetUnfolderBase]: For 822/822 co-relation queries the response was YES. [2023-11-17 11:16:51,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1151 conditions, 303 events. 172/303 cut-off events. For 822/822 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1050 event pairs, 18 based on Foata normal form. 8/311 useless extension candidates. Maximal degree in co-relation 1127. Up to 79 conditions per place. [2023-11-17 11:16:51,660 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 38 selfloop transitions, 22 changer transitions 3/63 dead transitions. [2023-11-17 11:16:51,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 63 transitions, 519 flow [2023-11-17 11:16:51,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 11:16:51,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 11:16:51,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2023-11-17 11:16:51,665 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2986111111111111 [2023-11-17 11:16:51,665 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 86 transitions. [2023-11-17 11:16:51,665 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 86 transitions. [2023-11-17 11:16:51,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:16:51,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 86 transitions. [2023-11-17 11:16:51,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:51,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 36.0) internal successors, (324), 9 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:51,669 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 36.0) internal successors, (324), 9 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:51,669 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 269 flow. Second operand 8 states and 86 transitions. [2023-11-17 11:16:51,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 63 transitions, 519 flow [2023-11-17 11:16:51,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 63 transitions, 495 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-11-17 11:16:51,675 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 375 flow [2023-11-17 11:16:51,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=375, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2023-11-17 11:16:51,676 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 32 predicate places. [2023-11-17 11:16:51,676 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 375 flow [2023-11-17 11:16:51,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:51,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:16:51,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:16:51,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 11:16:51,677 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:16:51,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:16:51,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1046048068, now seen corresponding path program 3 times [2023-11-17 11:16:51,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:16:51,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801907455] [2023-11-17 11:16:51,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:16:51,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:16:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:16:51,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:16:51,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:16:51,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801907455] [2023-11-17 11:16:51,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801907455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:16:51,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:16:51,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:16:51,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171687479] [2023-11-17 11:16:51,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:16:51,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:16:51,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:16:51,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:16:51,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-17 11:16:51,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:16:51,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 375 flow. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:51,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:16:51,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:16:51,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:16:51,875 INFO L124 PetriNetUnfolderBase]: 160/283 cut-off events. [2023-11-17 11:16:51,875 INFO L125 PetriNetUnfolderBase]: For 1345/1345 co-relation queries the response was YES. [2023-11-17 11:16:51,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1266 conditions, 283 events. 160/283 cut-off events. For 1345/1345 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 989 event pairs, 22 based on Foata normal form. 8/291 useless extension candidates. Maximal degree in co-relation 1237. Up to 69 conditions per place. [2023-11-17 11:16:51,878 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 30 selfloop transitions, 22 changer transitions 8/60 dead transitions. [2023-11-17 11:16:51,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 60 transitions, 601 flow [2023-11-17 11:16:51,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:16:51,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:16:51,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 75 transitions. [2023-11-17 11:16:51,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2976190476190476 [2023-11-17 11:16:51,879 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 75 transitions. [2023-11-17 11:16:51,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 75 transitions. [2023-11-17 11:16:51,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:16:51,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 75 transitions. [2023-11-17 11:16:51,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:51,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 36.0) internal successors, (288), 8 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:51,881 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 36.0) internal successors, (288), 8 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:51,881 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 375 flow. Second operand 7 states and 75 transitions. [2023-11-17 11:16:51,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 60 transitions, 601 flow [2023-11-17 11:16:51,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 60 transitions, 567 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-11-17 11:16:51,889 INFO L231 Difference]: Finished difference. Result has 55 places, 41 transitions, 427 flow [2023-11-17 11:16:51,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=427, PETRI_PLACES=55, PETRI_TRANSITIONS=41} [2023-11-17 11:16:51,890 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 37 predicate places. [2023-11-17 11:16:51,891 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 41 transitions, 427 flow [2023-11-17 11:16:51,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:51,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:16:51,891 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:16:51,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 11:16:51,891 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:16:51,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:16:51,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1932250210, now seen corresponding path program 4 times [2023-11-17 11:16:51,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:16:51,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238479138] [2023-11-17 11:16:51,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:16:51,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:16:51,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:16:51,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:16:51,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:16:51,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238479138] [2023-11-17 11:16:51,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238479138] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:16:51,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907530655] [2023-11-17 11:16:51,979 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 11:16:51,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:16:51,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:16:51,982 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:16:51,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 11:16:52,050 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 11:16:52,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:16:52,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-17 11:16:52,056 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:16:52,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:16:52,135 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:16:52,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:16:52,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907530655] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:16:52,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:16:52,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-11-17 11:16:52,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355416984] [2023-11-17 11:16:52,209 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:16:52,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 11:16:52,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:16:52,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 11:16:52,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-17 11:16:52,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:16:52,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 41 transitions, 427 flow. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:52,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:16:52,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:16:52,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:16:52,464 INFO L124 PetriNetUnfolderBase]: 208/363 cut-off events. [2023-11-17 11:16:52,465 INFO L125 PetriNetUnfolderBase]: For 2340/2340 co-relation queries the response was YES. [2023-11-17 11:16:52,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1744 conditions, 363 events. 208/363 cut-off events. For 2340/2340 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1260 event pairs, 18 based on Foata normal form. 16/379 useless extension candidates. Maximal degree in co-relation 1713. Up to 90 conditions per place. [2023-11-17 11:16:52,468 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 34 selfloop transitions, 37 changer transitions 22/93 dead transitions. [2023-11-17 11:16:52,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 93 transitions, 989 flow [2023-11-17 11:16:52,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 11:16:52,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 11:16:52,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 144 transitions. [2023-11-17 11:16:52,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2857142857142857 [2023-11-17 11:16:52,470 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 144 transitions. [2023-11-17 11:16:52,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 144 transitions. [2023-11-17 11:16:52,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:16:52,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 144 transitions. [2023-11-17 11:16:52,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 10.285714285714286) internal successors, (144), 14 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:52,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 36.0) internal successors, (540), 15 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:52,474 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 36.0) internal successors, (540), 15 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:52,474 INFO L175 Difference]: Start difference. First operand has 55 places, 41 transitions, 427 flow. Second operand 14 states and 144 transitions. [2023-11-17 11:16:52,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 93 transitions, 989 flow [2023-11-17 11:16:52,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 93 transitions, 927 flow, removed 14 selfloop flow, removed 5 redundant places. [2023-11-17 11:16:52,483 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 735 flow [2023-11-17 11:16:52,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=385, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=735, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2023-11-17 11:16:52,484 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 50 predicate places. [2023-11-17 11:16:52,484 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 735 flow [2023-11-17 11:16:52,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:52,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:16:52,485 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:16:52,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-17 11:16:52,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:16:52,691 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:16:52,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:16:52,692 INFO L85 PathProgramCache]: Analyzing trace with hash -3296339, now seen corresponding path program 5 times [2023-11-17 11:16:52,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:16:52,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108254833] [2023-11-17 11:16:52,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:16:52,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:16:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:16:52,865 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:16:52,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:16:52,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108254833] [2023-11-17 11:16:52,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108254833] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:16:52,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630492830] [2023-11-17 11:16:52,866 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 11:16:52,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:16:52,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:16:52,869 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:16:52,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 11:16:52,947 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-17 11:16:52,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:16:52,948 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 11:16:52,950 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:16:52,997 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:16:52,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:16:53,147 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:16:53,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630492830] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:16:53,148 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:16:53,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-17 11:16:53,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799202876] [2023-11-17 11:16:53,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:16:53,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 11:16:53,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:16:53,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 11:16:53,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-11-17 11:16:53,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:16:53,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 735 flow. Second operand has 16 states, 16 states have (on average 6.8125) internal successors, (109), 16 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:53,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:16:53,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:16:53,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:16:53,441 INFO L124 PetriNetUnfolderBase]: 264/475 cut-off events. [2023-11-17 11:16:53,441 INFO L125 PetriNetUnfolderBase]: For 4861/4861 co-relation queries the response was YES. [2023-11-17 11:16:53,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2527 conditions, 475 events. 264/475 cut-off events. For 4861/4861 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1706 event pairs, 55 based on Foata normal form. 32/507 useless extension candidates. Maximal degree in co-relation 2491. Up to 249 conditions per place. [2023-11-17 11:16:53,446 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 65 selfloop transitions, 27 changer transitions 27/119 dead transitions. [2023-11-17 11:16:53,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 119 transitions, 1505 flow [2023-11-17 11:16:53,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-17 11:16:53,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-17 11:16:53,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 163 transitions. [2023-11-17 11:16:53,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2829861111111111 [2023-11-17 11:16:53,448 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 163 transitions. [2023-11-17 11:16:53,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 163 transitions. [2023-11-17 11:16:53,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:16:53,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 163 transitions. [2023-11-17 11:16:53,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 10.1875) internal successors, (163), 16 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:53,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 36.0) internal successors, (612), 17 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:53,450 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 36.0) internal successors, (612), 17 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:53,451 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 735 flow. Second operand 16 states and 163 transitions. [2023-11-17 11:16:53,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 119 transitions, 1505 flow [2023-11-17 11:16:53,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 119 transitions, 1144 flow, removed 167 selfloop flow, removed 5 redundant places. [2023-11-17 11:16:53,464 INFO L231 Difference]: Finished difference. Result has 88 places, 71 transitions, 813 flow [2023-11-17 11:16:53,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=813, PETRI_PLACES=88, PETRI_TRANSITIONS=71} [2023-11-17 11:16:53,466 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 70 predicate places. [2023-11-17 11:16:53,467 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 71 transitions, 813 flow [2023-11-17 11:16:53,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.8125) internal successors, (109), 16 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:53,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:16:53,467 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:16:53,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 11:16:53,674 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,SelfDestructingSolverStorable7 [2023-11-17 11:16:53,674 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:16:53,674 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:16:53,674 INFO L85 PathProgramCache]: Analyzing trace with hash 852010315, now seen corresponding path program 6 times [2023-11-17 11:16:53,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:16:53,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912582743] [2023-11-17 11:16:53,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:16:53,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:16:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:16:53,827 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:16:53,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:16:53,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912582743] [2023-11-17 11:16:53,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912582743] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:16:53,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769865160] [2023-11-17 11:16:53,828 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 11:16:53,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:16:53,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:16:53,829 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:16:53,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 11:16:53,914 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-11-17 11:16:53,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:16:53,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 11:16:53,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:16:53,973 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:16:53,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:16:54,107 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:16:54,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769865160] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:16:54,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:16:54,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-17 11:16:54,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804307816] [2023-11-17 11:16:54,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:16:54,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 11:16:54,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:16:54,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 11:16:54,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-11-17 11:16:54,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:16:54,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 71 transitions, 813 flow. Second operand has 17 states, 17 states have (on average 6.823529411764706) internal successors, (116), 17 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:54,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:16:54,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:16:54,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:16:54,516 INFO L124 PetriNetUnfolderBase]: 418/767 cut-off events. [2023-11-17 11:16:54,516 INFO L125 PetriNetUnfolderBase]: For 12947/12947 co-relation queries the response was YES. [2023-11-17 11:16:54,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4114 conditions, 767 events. 418/767 cut-off events. For 12947/12947 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3419 event pairs, 44 based on Foata normal form. 32/799 useless extension candidates. Maximal degree in co-relation 4069. Up to 230 conditions per place. [2023-11-17 11:16:54,523 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 73 selfloop transitions, 73 changer transitions 37/183 dead transitions. [2023-11-17 11:16:54,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 183 transitions, 2135 flow [2023-11-17 11:16:54,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-17 11:16:54,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-17 11:16:54,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 224 transitions. [2023-11-17 11:16:54,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2828282828282828 [2023-11-17 11:16:54,525 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 224 transitions. [2023-11-17 11:16:54,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 224 transitions. [2023-11-17 11:16:54,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:16:54,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 224 transitions. [2023-11-17 11:16:54,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 10.181818181818182) internal successors, (224), 22 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:54,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 36.0) internal successors, (828), 23 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:54,529 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 36.0) internal successors, (828), 23 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:54,529 INFO L175 Difference]: Start difference. First operand has 88 places, 71 transitions, 813 flow. Second operand 22 states and 224 transitions. [2023-11-17 11:16:54,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 183 transitions, 2135 flow [2023-11-17 11:16:54,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 183 transitions, 2040 flow, removed 38 selfloop flow, removed 4 redundant places. [2023-11-17 11:16:54,555 INFO L231 Difference]: Finished difference. Result has 119 places, 109 transitions, 1544 flow [2023-11-17 11:16:54,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=718, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1544, PETRI_PLACES=119, PETRI_TRANSITIONS=109} [2023-11-17 11:16:54,556 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 101 predicate places. [2023-11-17 11:16:54,557 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 109 transitions, 1544 flow [2023-11-17 11:16:54,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.823529411764706) internal successors, (116), 17 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:54,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:16:54,557 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:16:54,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 11:16:54,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:16:54,764 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:16:54,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:16:54,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1696549971, now seen corresponding path program 7 times [2023-11-17 11:16:54,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:16:54,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445075176] [2023-11-17 11:16:54,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:16:54,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:16:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:16:54,874 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:16:54,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:16:54,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445075176] [2023-11-17 11:16:54,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445075176] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:16:54,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326500028] [2023-11-17 11:16:54,875 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 11:16:54,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:16:54,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:16:54,877 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:16:54,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 11:16:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:16:54,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 11:16:54,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:16:54,982 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:16:54,982 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:16:55,083 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:16:55,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326500028] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:16:55,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:16:55,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-17 11:16:55,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872665718] [2023-11-17 11:16:55,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:16:55,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 11:16:55,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:16:55,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 11:16:55,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2023-11-17 11:16:55,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:16:55,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 109 transitions, 1544 flow. Second operand has 17 states, 17 states have (on average 6.764705882352941) internal successors, (115), 17 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:55,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:16:55,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:16:55,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:16:55,646 INFO L124 PetriNetUnfolderBase]: 582/1047 cut-off events. [2023-11-17 11:16:55,646 INFO L125 PetriNetUnfolderBase]: For 34545/34545 co-relation queries the response was YES. [2023-11-17 11:16:55,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7375 conditions, 1047 events. 582/1047 cut-off events. For 34545/34545 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4891 event pairs, 20 based on Foata normal form. 32/1079 useless extension candidates. Maximal degree in co-relation 7315. Up to 330 conditions per place. [2023-11-17 11:16:55,657 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 61 selfloop transitions, 129 changer transitions 48/238 dead transitions. [2023-11-17 11:16:55,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 238 transitions, 3696 flow [2023-11-17 11:16:55,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-17 11:16:55,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-17 11:16:55,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 275 transitions. [2023-11-17 11:16:55,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2829218106995885 [2023-11-17 11:16:55,661 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 275 transitions. [2023-11-17 11:16:55,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 275 transitions. [2023-11-17 11:16:55,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:16:55,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 275 transitions. [2023-11-17 11:16:55,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 10.185185185185185) internal successors, (275), 27 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:55,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 36.0) internal successors, (1008), 28 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:55,664 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 36.0) internal successors, (1008), 28 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:55,664 INFO L175 Difference]: Start difference. First operand has 119 places, 109 transitions, 1544 flow. Second operand 27 states and 275 transitions. [2023-11-17 11:16:55,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 238 transitions, 3696 flow [2023-11-17 11:16:55,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 238 transitions, 3378 flow, removed 149 selfloop flow, removed 4 redundant places. [2023-11-17 11:16:55,730 INFO L231 Difference]: Finished difference. Result has 156 places, 151 transitions, 2545 flow [2023-11-17 11:16:55,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1302, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=2545, PETRI_PLACES=156, PETRI_TRANSITIONS=151} [2023-11-17 11:16:55,731 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 138 predicate places. [2023-11-17 11:16:55,731 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 151 transitions, 2545 flow [2023-11-17 11:16:55,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.764705882352941) internal successors, (115), 17 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:55,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:16:55,732 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:16:55,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 11:16:55,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:16:55,938 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:16:55,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:16:55,938 INFO L85 PathProgramCache]: Analyzing trace with hash 2143934805, now seen corresponding path program 8 times [2023-11-17 11:16:55,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:16:55,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452134441] [2023-11-17 11:16:55,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:16:55,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:16:55,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:16:56,077 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:16:56,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:16:56,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452134441] [2023-11-17 11:16:56,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452134441] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:16:56,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112744913] [2023-11-17 11:16:56,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 11:16:56,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:16:56,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:16:56,079 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:16:56,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 11:16:56,155 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 11:16:56,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:16:56,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-17 11:16:56,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:16:56,208 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:16:56,208 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:16:56,362 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:16:56,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112744913] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:16:56,363 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:16:56,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2023-11-17 11:16:56,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602556583] [2023-11-17 11:16:56,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:16:56,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-17 11:16:56,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:16:56,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-17 11:16:56,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=454, Unknown=0, NotChecked=0, Total=600 [2023-11-17 11:16:56,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:16:56,368 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 151 transitions, 2545 flow. Second operand has 25 states, 25 states have (on average 6.44) internal successors, (161), 25 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:56,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:16:56,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:16:56,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:16:57,241 INFO L124 PetriNetUnfolderBase]: 814/1447 cut-off events. [2023-11-17 11:16:57,241 INFO L125 PetriNetUnfolderBase]: For 82872/82872 co-relation queries the response was YES. [2023-11-17 11:16:57,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13290 conditions, 1447 events. 814/1447 cut-off events. For 82872/82872 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 6621 event pairs, 26 based on Foata normal form. 40/1487 useless extension candidates. Maximal degree in co-relation 13216. Up to 485 conditions per place. [2023-11-17 11:16:57,262 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 69 selfloop transitions, 184 changer transitions 70/323 dead transitions. [2023-11-17 11:16:57,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 323 transitions, 6844 flow [2023-11-17 11:16:57,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-11-17 11:16:57,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-11-17 11:16:57,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 378 transitions. [2023-11-17 11:16:57,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27631578947368424 [2023-11-17 11:16:57,264 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 378 transitions. [2023-11-17 11:16:57,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 378 transitions. [2023-11-17 11:16:57,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:16:57,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 378 transitions. [2023-11-17 11:16:57,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 9.947368421052632) internal successors, (378), 38 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:57,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 36.0) internal successors, (1404), 39 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:57,268 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 36.0) internal successors, (1404), 39 states have internal predecessors, (1404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:57,269 INFO L175 Difference]: Start difference. First operand has 156 places, 151 transitions, 2545 flow. Second operand 38 states and 378 transitions. [2023-11-17 11:16:57,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 323 transitions, 6844 flow [2023-11-17 11:16:57,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 323 transitions, 5313 flow, removed 740 selfloop flow, removed 10 redundant places. [2023-11-17 11:16:57,440 INFO L231 Difference]: Finished difference. Result has 203 places, 212 transitions, 3754 flow [2023-11-17 11:16:57,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1966, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3754, PETRI_PLACES=203, PETRI_TRANSITIONS=212} [2023-11-17 11:16:57,441 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 185 predicate places. [2023-11-17 11:16:57,442 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 212 transitions, 3754 flow [2023-11-17 11:16:57,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.44) internal successors, (161), 25 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:57,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:16:57,442 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:16:57,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-17 11:16:57,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-17 11:16:57,651 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:16:57,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:16:57,651 INFO L85 PathProgramCache]: Analyzing trace with hash -734378867, now seen corresponding path program 9 times [2023-11-17 11:16:57,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:16:57,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990761923] [2023-11-17 11:16:57,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:16:57,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:16:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:16:58,084 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:16:58,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:16:58,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990761923] [2023-11-17 11:16:58,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990761923] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:16:58,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146517161] [2023-11-17 11:16:58,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 11:16:58,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:16:58,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:16:58,086 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:16:58,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-17 11:16:58,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-11-17 11:16:58,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:16:58,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-17 11:16:58,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:16:58,233 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:16:58,233 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:16:58,669 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:16:58,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146517161] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:16:58,669 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:16:58,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 38 [2023-11-17 11:16:58,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699925813] [2023-11-17 11:16:58,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:16:58,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-17 11:16:58,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:16:58,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-17 11:16:58,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=1165, Unknown=0, NotChecked=0, Total=1560 [2023-11-17 11:16:58,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:16:58,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 212 transitions, 3754 flow. Second operand has 40 states, 40 states have (on average 6.3) internal successors, (252), 40 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:16:58,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:16:58,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:16:58,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:00,036 INFO L124 PetriNetUnfolderBase]: 934/1687 cut-off events. [2023-11-17 11:17:00,036 INFO L125 PetriNetUnfolderBase]: For 143720/143720 co-relation queries the response was YES. [2023-11-17 11:17:00,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17527 conditions, 1687 events. 934/1687 cut-off events. For 143720/143720 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 7594 event pairs, 265 based on Foata normal form. 80/1767 useless extension candidates. Maximal degree in co-relation 17434. Up to 1189 conditions per place. [2023-11-17 11:17:00,062 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 227 selfloop transitions, 61 changer transitions 75/363 dead transitions. [2023-11-17 11:17:00,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 363 transitions, 8342 flow [2023-11-17 11:17:00,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-17 11:17:00,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-11-17 11:17:00,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 391 transitions. [2023-11-17 11:17:00,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27152777777777776 [2023-11-17 11:17:00,065 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 391 transitions. [2023-11-17 11:17:00,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 391 transitions. [2023-11-17 11:17:00,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:00,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 391 transitions. [2023-11-17 11:17:00,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 9.775) internal successors, (391), 40 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:00,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 36.0) internal successors, (1476), 41 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:00,069 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 36.0) internal successors, (1476), 41 states have internal predecessors, (1476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:00,069 INFO L175 Difference]: Start difference. First operand has 203 places, 212 transitions, 3754 flow. Second operand 40 states and 391 transitions. [2023-11-17 11:17:00,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 363 transitions, 8342 flow [2023-11-17 11:17:00,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 363 transitions, 7062 flow, removed 614 selfloop flow, removed 6 redundant places. [2023-11-17 11:17:00,432 INFO L231 Difference]: Finished difference. Result has 258 places, 242 transitions, 4471 flow [2023-11-17 11:17:00,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2958, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=4471, PETRI_PLACES=258, PETRI_TRANSITIONS=242} [2023-11-17 11:17:00,433 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 240 predicate places. [2023-11-17 11:17:00,433 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 242 transitions, 4471 flow [2023-11-17 11:17:00,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 6.3) internal successors, (252), 40 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:00,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:00,434 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:17:00,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-17 11:17:00,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:17:00,639 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:17:00,640 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:00,640 INFO L85 PathProgramCache]: Analyzing trace with hash -298731221, now seen corresponding path program 10 times [2023-11-17 11:17:00,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:00,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81617619] [2023-11-17 11:17:00,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:00,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:01,013 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:17:01,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:17:01,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81617619] [2023-11-17 11:17:01,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81617619] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:17:01,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102897936] [2023-11-17 11:17:01,013 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 11:17:01,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:17:01,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:17:01,017 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:17:01,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-17 11:17:01,094 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 11:17:01,095 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:17:01,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-17 11:17:01,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:17:01,165 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:17:01,166 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:17:01,602 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:17:01,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102897936] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:17:01,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:17:01,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 39 [2023-11-17 11:17:01,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280111883] [2023-11-17 11:17:01,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:17:01,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-17 11:17:01,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:17:01,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-17 11:17:01,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=1274, Unknown=0, NotChecked=0, Total=1640 [2023-11-17 11:17:01,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:17:01,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 242 transitions, 4471 flow. Second operand has 41 states, 41 states have (on average 6.317073170731708) internal successors, (259), 41 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:01,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:17:01,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:17:01,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:03,141 INFO L124 PetriNetUnfolderBase]: 1214/2247 cut-off events. [2023-11-17 11:17:03,142 INFO L125 PetriNetUnfolderBase]: For 366877/366877 co-relation queries the response was YES. [2023-11-17 11:17:03,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27411 conditions, 2247 events. 1214/2247 cut-off events. For 366877/366877 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 10871 event pairs, 162 based on Foata normal form. 80/2327 useless extension candidates. Maximal degree in co-relation 27295. Up to 881 conditions per place. [2023-11-17 11:17:03,190 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 188 selfloop transitions, 186 changer transitions 87/461 dead transitions. [2023-11-17 11:17:03,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 461 transitions, 10710 flow [2023-11-17 11:17:03,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-17 11:17:03,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-11-17 11:17:03,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 452 transitions. [2023-11-17 11:17:03,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27294685990338163 [2023-11-17 11:17:03,193 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 452 transitions. [2023-11-17 11:17:03,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 452 transitions. [2023-11-17 11:17:03,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:03,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 452 transitions. [2023-11-17 11:17:03,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 9.826086956521738) internal successors, (452), 46 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:03,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 36.0) internal successors, (1692), 47 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:03,198 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 36.0) internal successors, (1692), 47 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:03,199 INFO L175 Difference]: Start difference. First operand has 258 places, 242 transitions, 4471 flow. Second operand 46 states and 452 transitions. [2023-11-17 11:17:03,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 461 transitions, 10710 flow [2023-11-17 11:17:03,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 461 transitions, 9571 flow, removed 542 selfloop flow, removed 14 redundant places. [2023-11-17 11:17:03,895 INFO L231 Difference]: Finished difference. Result has 309 places, 311 transitions, 6193 flow [2023-11-17 11:17:03,895 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3332, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=6193, PETRI_PLACES=309, PETRI_TRANSITIONS=311} [2023-11-17 11:17:03,896 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 291 predicate places. [2023-11-17 11:17:03,896 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 311 transitions, 6193 flow [2023-11-17 11:17:03,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 6.317073170731708) internal successors, (259), 41 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:03,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:03,896 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:17:03,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-17 11:17:04,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:17:04,103 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:17:04,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:04,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1383775441, now seen corresponding path program 11 times [2023-11-17 11:17:04,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:04,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119716968] [2023-11-17 11:17:04,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:04,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:04,425 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:17:04,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:17:04,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119716968] [2023-11-17 11:17:04,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119716968] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:17:04,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121328297] [2023-11-17 11:17:04,426 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 11:17:04,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:17:04,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:17:04,427 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:17:04,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-17 11:17:04,504 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-11-17 11:17:04,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:17:04,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-17 11:17:04,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:17:04,565 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:17:04,565 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:17:05,004 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:17:05,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121328297] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:17:05,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:17:05,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 38 [2023-11-17 11:17:05,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184106809] [2023-11-17 11:17:05,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:17:05,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-17 11:17:05,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:17:05,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-17 11:17:05,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2023-11-17 11:17:05,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:17:05,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 311 transitions, 6193 flow. Second operand has 40 states, 40 states have (on average 6.3) internal successors, (252), 40 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:05,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:17:05,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:17:05,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:07,029 INFO L124 PetriNetUnfolderBase]: 1686/3191 cut-off events. [2023-11-17 11:17:07,029 INFO L125 PetriNetUnfolderBase]: For 853808/853808 co-relation queries the response was YES. [2023-11-17 11:17:07,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47295 conditions, 3191 events. 1686/3191 cut-off events. For 853808/853808 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 17389 event pairs, 100 based on Foata normal form. 80/3271 useless extension candidates. Maximal degree in co-relation 47158. Up to 1337 conditions per place. [2023-11-17 11:17:07,100 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 143 selfloop transitions, 359 changer transitions 97/599 dead transitions. [2023-11-17 11:17:07,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 599 transitions, 15812 flow [2023-11-17 11:17:07,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-17 11:17:07,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-11-17 11:17:07,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 501 transitions. [2023-11-17 11:17:07,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.272875816993464 [2023-11-17 11:17:07,103 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 501 transitions. [2023-11-17 11:17:07,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 501 transitions. [2023-11-17 11:17:07,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:07,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 501 transitions. [2023-11-17 11:17:07,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 9.823529411764707) internal successors, (501), 51 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:07,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 36.0) internal successors, (1872), 52 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:07,107 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 36.0) internal successors, (1872), 52 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:07,107 INFO L175 Difference]: Start difference. First operand has 309 places, 311 transitions, 6193 flow. Second operand 51 states and 501 transitions. [2023-11-17 11:17:07,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 599 transitions, 15812 flow [2023-11-17 11:17:08,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 599 transitions, 13858 flow, removed 936 selfloop flow, removed 14 redundant places. [2023-11-17 11:17:08,918 INFO L231 Difference]: Finished difference. Result has 369 places, 434 transitions, 9486 flow [2023-11-17 11:17:08,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4663, PETRI_DIFFERENCE_MINUEND_PLACES=295, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=9486, PETRI_PLACES=369, PETRI_TRANSITIONS=434} [2023-11-17 11:17:08,919 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 351 predicate places. [2023-11-17 11:17:08,919 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 434 transitions, 9486 flow [2023-11-17 11:17:08,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 6.3) internal successors, (252), 40 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:08,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:08,920 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:17:08,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-17 11:17:09,126 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,SelfDestructingSolverStorable13 [2023-11-17 11:17:09,126 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:17:09,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:09,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1634587819, now seen corresponding path program 12 times [2023-11-17 11:17:09,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:09,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699337832] [2023-11-17 11:17:09,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:09,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:09,414 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:17:09,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:17:09,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699337832] [2023-11-17 11:17:09,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699337832] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:17:09,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059509676] [2023-11-17 11:17:09,414 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 11:17:09,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:17:09,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:17:09,416 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:17:09,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-17 11:17:09,488 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2023-11-17 11:17:09,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:17:09,489 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-17 11:17:09,490 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:17:09,558 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:17:09,558 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:17:09,981 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:17:09,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059509676] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:17:09,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:17:09,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 39 [2023-11-17 11:17:09,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550536986] [2023-11-17 11:17:09,982 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:17:09,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-17 11:17:09,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:17:09,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-17 11:17:09,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1358, Unknown=0, NotChecked=0, Total=1640 [2023-11-17 11:17:09,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:17:09,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 434 transitions, 9486 flow. Second operand has 41 states, 41 states have (on average 6.317073170731708) internal successors, (259), 41 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:09,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:17:09,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:17:09,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:12,769 INFO L124 PetriNetUnfolderBase]: 2246/4211 cut-off events. [2023-11-17 11:17:12,769 INFO L125 PetriNetUnfolderBase]: For 1721721/1721721 co-relation queries the response was YES. [2023-11-17 11:17:12,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74538 conditions, 4211 events. 2246/4211 cut-off events. For 1721721/1721721 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 24415 event pairs, 38 based on Foata normal form. 84/4295 useless extension candidates. Maximal degree in co-relation 74376. Up to 1797 conditions per place. [2023-11-17 11:17:12,849 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 111 selfloop transitions, 543 changer transitions 117/771 dead transitions. [2023-11-17 11:17:12,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 430 places, 771 transitions, 23235 flow [2023-11-17 11:17:12,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2023-11-17 11:17:12,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2023-11-17 11:17:12,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 612 transitions. [2023-11-17 11:17:12,852 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27419354838709675 [2023-11-17 11:17:12,852 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 612 transitions. [2023-11-17 11:17:12,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 612 transitions. [2023-11-17 11:17:12,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:12,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 612 transitions. [2023-11-17 11:17:12,854 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 9.870967741935484) internal successors, (612), 62 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:12,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 36.0) internal successors, (2268), 63 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:12,857 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 36.0) internal successors, (2268), 63 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:12,857 INFO L175 Difference]: Start difference. First operand has 369 places, 434 transitions, 9486 flow. Second operand 62 states and 612 transitions. [2023-11-17 11:17:12,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 430 places, 771 transitions, 23235 flow [2023-11-17 11:17:16,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 771 transitions, 18348 flow, removed 2365 selfloop flow, removed 17 redundant places. [2023-11-17 11:17:16,241 INFO L231 Difference]: Finished difference. Result has 443 places, 578 transitions, 12935 flow [2023-11-17 11:17:16,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=6937, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=406, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=12935, PETRI_PLACES=443, PETRI_TRANSITIONS=578} [2023-11-17 11:17:16,242 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 425 predicate places. [2023-11-17 11:17:16,243 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 578 transitions, 12935 flow [2023-11-17 11:17:16,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 6.317073170731708) internal successors, (259), 41 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:16,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:16,243 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:17:16,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-17 11:17:16,444 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,SelfDestructingSolverStorable14 [2023-11-17 11:17:16,444 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:17:16,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:16,445 INFO L85 PathProgramCache]: Analyzing trace with hash -868206543, now seen corresponding path program 13 times [2023-11-17 11:17:16,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:16,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072100238] [2023-11-17 11:17:16,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:16,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:16,769 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:17:16,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:17:16,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072100238] [2023-11-17 11:17:16,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072100238] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:17:16,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537460290] [2023-11-17 11:17:16,770 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 11:17:16,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:17:16,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:17:16,772 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:17:16,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-17 11:17:16,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:16,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-17 11:17:16,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:17:16,913 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:17:16,913 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:17:17,309 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 11:17:17,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537460290] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:17:17,310 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:17:17,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 41 [2023-11-17 11:17:17,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924821112] [2023-11-17 11:17:17,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:17:17,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-17 11:17:17,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:17:17,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-17 11:17:17,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=1376, Unknown=0, NotChecked=0, Total=1806 [2023-11-17 11:17:17,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:17:17,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 578 transitions, 12935 flow. Second operand has 43 states, 43 states have (on average 6.3023255813953485) internal successors, (271), 43 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:17,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:17:17,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:17:17,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:20,780 INFO L124 PetriNetUnfolderBase]: 2694/5031 cut-off events. [2023-11-17 11:17:20,780 INFO L125 PetriNetUnfolderBase]: For 2260476/2260476 co-relation queries the response was YES. [2023-11-17 11:17:20,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99324 conditions, 5031 events. 2694/5031 cut-off events. For 2260476/2260476 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 29013 event pairs, 12 based on Foata normal form. 80/5111 useless extension candidates. Maximal degree in co-relation 99132. Up to 2157 conditions per place. [2023-11-17 11:17:20,889 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 116 selfloop transitions, 660 changer transitions 148/924 dead transitions. [2023-11-17 11:17:20,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 924 transitions, 33830 flow [2023-11-17 11:17:20,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-11-17 11:17:20,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2023-11-17 11:17:20,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 762 transitions. [2023-11-17 11:17:20,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2748917748917749 [2023-11-17 11:17:20,892 INFO L72 ComplementDD]: Start complementDD. Operand 77 states and 762 transitions. [2023-11-17 11:17:20,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 762 transitions. [2023-11-17 11:17:20,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:20,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 77 states and 762 transitions. [2023-11-17 11:17:20,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 78 states, 77 states have (on average 9.896103896103897) internal successors, (762), 77 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:20,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 78 states, 78 states have (on average 36.0) internal successors, (2808), 78 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:20,898 INFO L81 ComplementDD]: Finished complementDD. Result has 78 states, 78 states have (on average 36.0) internal successors, (2808), 78 states have internal predecessors, (2808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:20,898 INFO L175 Difference]: Start difference. First operand has 443 places, 578 transitions, 12935 flow. Second operand 77 states and 762 transitions. [2023-11-17 11:17:20,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 924 transitions, 33830 flow [2023-11-17 11:17:25,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 924 transitions, 26608 flow, removed 3431 selfloop flow, removed 24 redundant places. [2023-11-17 11:17:25,535 INFO L231 Difference]: Finished difference. Result has 534 places, 691 transitions, 17499 flow [2023-11-17 11:17:25,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=9553, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=548, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=77, PETRI_FLOW=17499, PETRI_PLACES=534, PETRI_TRANSITIONS=691} [2023-11-17 11:17:25,536 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 516 predicate places. [2023-11-17 11:17:25,536 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 691 transitions, 17499 flow [2023-11-17 11:17:25,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 6.3023255813953485) internal successors, (271), 43 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:25,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:25,536 INFO L208 CegarLoopForPetriNet]: trace histogram [18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:17:25,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-17 11:17:25,737 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,SelfDestructingSolverStorable15 [2023-11-17 11:17:25,737 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:17:25,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:25,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1537005311, now seen corresponding path program 14 times [2023-11-17 11:17:25,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:25,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701606302] [2023-11-17 11:17:25,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:25,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:17:26,524 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:17:26,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:17:26,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701606302] [2023-11-17 11:17:26,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701606302] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 11:17:26,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980243403] [2023-11-17 11:17:26,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 11:17:26,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 11:17:26,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:17:26,529 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 11:17:26,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-17 11:17:26,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 11:17:26,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 11:17:26,631 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-17 11:17:26,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 11:17:26,718 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:17:26,718 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 11:17:27,338 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:17:27,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980243403] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 11:17:27,339 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 11:17:27,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 47 [2023-11-17 11:17:27,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914662240] [2023-11-17 11:17:27,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 11:17:27,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-17 11:17:27,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:17:27,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-17 11:17:27,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=534, Invalid=1818, Unknown=0, NotChecked=0, Total=2352 [2023-11-17 11:17:27,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 36 [2023-11-17 11:17:27,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 691 transitions, 17499 flow. Second operand has 49 states, 49 states have (on average 6.244897959183674) internal successors, (306), 49 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:27,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:17:27,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 36 [2023-11-17 11:17:27,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:17:32,405 INFO L124 PetriNetUnfolderBase]: 2962/5479 cut-off events. [2023-11-17 11:17:32,405 INFO L125 PetriNetUnfolderBase]: For 3572836/3572836 co-relation queries the response was YES. [2023-11-17 11:17:32,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128268 conditions, 5479 events. 2962/5479 cut-off events. For 3572836/3572836 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 31255 event pairs, 18 based on Foata normal form. 28/5507 useless extension candidates. Maximal degree in co-relation 128037. Up to 2309 conditions per place. [2023-11-17 11:17:32,523 INFO L140 encePairwiseOnDemand]: 31/36 looper letters, 133 selfloop transitions, 727 changer transitions 170/1030 dead transitions. [2023-11-17 11:17:32,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 1030 transitions, 40130 flow [2023-11-17 11:17:32,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-11-17 11:17:32,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2023-11-17 11:17:32,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 854 transitions. [2023-11-17 11:17:32,526 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26957070707070707 [2023-11-17 11:17:32,526 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 854 transitions. [2023-11-17 11:17:32,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 854 transitions. [2023-11-17 11:17:32,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:17:32,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 854 transitions. [2023-11-17 11:17:32,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 9.704545454545455) internal successors, (854), 88 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:32,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 36.0) internal successors, (3204), 89 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:32,534 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 36.0) internal successors, (3204), 89 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:32,534 INFO L175 Difference]: Start difference. First operand has 534 places, 691 transitions, 17499 flow. Second operand 88 states and 854 transitions. [2023-11-17 11:17:32,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 1030 transitions, 40130 flow [2023-11-17 11:17:41,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 601 places, 1030 transitions, 30619 flow, removed 4602 selfloop flow, removed 20 redundant places. [2023-11-17 11:17:41,157 INFO L231 Difference]: Finished difference. Result has 615 places, 758 transitions, 16622 flow [2023-11-17 11:17:41,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=12102, PETRI_DIFFERENCE_MINUEND_PLACES=514, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=661, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=16622, PETRI_PLACES=615, PETRI_TRANSITIONS=758} [2023-11-17 11:17:41,158 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 597 predicate places. [2023-11-17 11:17:41,158 INFO L495 AbstractCegarLoop]: Abstraction has has 615 places, 758 transitions, 16622 flow [2023-11-17 11:17:41,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 6.244897959183674) internal successors, (306), 49 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:17:41,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:17:41,159 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:17:41,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-17 11:17:41,362 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,SelfDestructingSolverStorable16 [2023-11-17 11:17:41,362 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:17:41,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:17:41,362 INFO L85 PathProgramCache]: Analyzing trace with hash -212940483, now seen corresponding path program 15 times [2023-11-17 11:17:41,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:17:41,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281965125] [2023-11-17 11:17:41,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:17:41,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:17:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 11:17:41,383 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-17 11:17:41,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-17 11:17:41,431 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-17 11:17:41,431 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-17 11:17:41,432 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-17 11:17:41,433 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-17 11:17:41,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-17 11:17:41,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-17 11:17:41,434 INFO L445 BasicCegarLoop]: Path program histogram: [15, 2, 1] [2023-11-17 11:17:41,438 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:17:41,438 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:17:41,492 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated [2023-11-17 11:17:41,493 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated [2023-11-17 11:17:41,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:17:41 BasicIcfg [2023-11-17 11:17:41,512 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:17:41,512 INFO L158 Benchmark]: Toolchain (without parser) took 53061.03ms. Allocated memory was 260.0MB in the beginning and 2.7GB in the end (delta: 2.4GB). Free memory was 212.9MB in the beginning and 1.5GB in the end (delta: -1.3GB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-11-17 11:17:41,512 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 180.4MB. Free memory is still 135.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:17:41,512 INFO L158 Benchmark]: CACSL2BoogieTranslator took 488.27ms. Allocated memory is still 260.0MB. Free memory was 212.9MB in the beginning and 192.9MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-17 11:17:41,513 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.55ms. Allocated memory is still 260.0MB. Free memory was 192.9MB in the beginning and 191.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:17:41,513 INFO L158 Benchmark]: Boogie Preprocessor took 31.00ms. Allocated memory is still 260.0MB. Free memory was 191.4MB in the beginning and 189.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 11:17:41,513 INFO L158 Benchmark]: RCFGBuilder took 426.45ms. Allocated memory is still 260.0MB. Free memory was 189.8MB in the beginning and 169.9MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-17 11:17:41,513 INFO L158 Benchmark]: TraceAbstraction took 52068.55ms. Allocated memory was 260.0MB in the beginning and 2.7GB in the end (delta: 2.4GB). Free memory was 168.8MB in the beginning and 1.5GB in the end (delta: -1.3GB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. [2023-11-17 11:17:41,514 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 180.4MB. Free memory is still 135.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 488.27ms. Allocated memory is still 260.0MB. Free memory was 212.9MB in the beginning and 192.9MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 41.55ms. Allocated memory is still 260.0MB. Free memory was 192.9MB in the beginning and 191.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.00ms. Allocated memory is still 260.0MB. Free memory was 191.4MB in the beginning and 189.8MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 426.45ms. Allocated memory is still 260.0MB. Free memory was 189.8MB in the beginning and 169.9MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * TraceAbstraction took 52068.55ms. Allocated memory was 260.0MB in the beginning and 2.7GB in the end (delta: 2.4GB). Free memory was 168.8MB in the beginning and 1.5GB in the end (delta: -1.3GB). Peak memory consumption was 1.1GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.3s, 26 PlacesBefore, 18 PlacesAfterwards, 22 TransitionsBefore, 13 TransitionsAfterwards, 230 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 10 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 1 ConcurrentYvCompositions, 1 ChoiceCompositions, 12 TotalNumberOfCompositions, 219 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 184, independent: 173, independent conditional: 0, independent unconditional: 173, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 145, independent: 137, independent conditional: 0, independent unconditional: 137, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 145, independent: 137, independent conditional: 0, independent unconditional: 137, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 8, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 29, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 184, independent: 36, independent conditional: 0, independent unconditional: 36, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 145, unknown conditional: 0, unknown unconditional: 145] , Statistics on independence cache: Total cache size (in pairs): 11, Positive cache size: 8, Positive conditional cache size: 0, Positive unconditional cache size: 8, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, argc=49, argv={50:51}, argv={50:51}, i=3, id1={5:0}, id2={3:0}, j=6] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={50:51}, argv={50:51}, i=3, id1={5:0}, id2={3:0}, j=6, k=0] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L716] 0 int condI = i >= (2*20 +6); VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={50:51}, argv={50:51}, condI=0, i=7, id1={5:0}, id2={3:0}, j=6, k=0, k=1] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=10, k=9] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=26, k=10, k=11] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=27, j=28, k=11, k=11] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=28, k=11, k=12] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=29, j=30, k=12, k=12] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=30, k=12, k=13] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=31, j=32, k=13, k=13] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=32, k=13, k=14] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=33, j=34, k=14, k=14] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=34, k=14, k=15] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=35, j=36, k=15, k=15] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=36, k=15, k=16] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=37, j=38, k=16, k=16] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=38, k=16, k=17] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=39, j=40, k=17, k=17] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=40, k=17, k=18] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=41, j=42, k=18, k=18] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=42, k=18, k=19] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=43, j=44, k=19, k=19] [L696] COND TRUE 1 k < 20 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=44, k=19, k=20] [L704] COND TRUE 2 k < 20 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=45, j=46, k=20, k=20] [L719] 0 int condJ = j >= (2*20 +6); [L721] COND TRUE 0 condI || condJ [L722] 0 reach_error() VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={50:51}, argv={50:51}, condI=0, condJ=1, i=45, id1={5:0}, id2={3:0}, j=46, k=20, k=20] - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 34 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: 51.9s, OverallIterations: 18, TraceHistogramMax: 20, PathProgramHistogramMax: 15, EmptinessCheckTime: 0.0s, AutomataDifference: 39.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5871 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5871 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 497 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4052 IncrementalHoareTripleChecker+Invalid, 4549 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 497 mSolverCounterUnsat, 0 mSDtfsCounter, 4052 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1107 GetRequests, 290 SyntacticMatches, 30 SemanticMatches, 787 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19684 ImplicationChecksByTransitivity, 10.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17499occurred in iteration=16, InterpolantAutomatonStates: 518, 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 7.8s InterpolantComputationTime, 590 NumberOfCodeBlocks, 589 NumberOfCodeBlocksAsserted, 65 NumberOfCheckSat, 748 ConstructedInterpolants, 0 QuantifiedInterpolants, 3364 SizeOfPredicates, 149 NumberOfNonLiveVariables, 1946 ConjunctsInSsa, 216 ConjunctsInUnsatCore, 39 InterpolantComputations, 6 PerfectInterpolantSequences, 24/2151 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 proved your program to be incorrect! [2023-11-17 11:17:41,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...