/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:18:20,805 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:18:20,879 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 15:18:20,896 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:18:20,896 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:18:20,897 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:18:20,897 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:18:20,897 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:18:20,897 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:18:20,898 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:18:20,898 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:18:20,898 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:18:20,898 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:18:20,899 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:18:20,899 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:18:20,899 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:18:20,899 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:18:20,899 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:18:20,900 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:18:20,900 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:18:20,900 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:18:20,900 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:18:20,901 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:18:20,901 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:18:20,901 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:18:20,901 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:18:20,901 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:18:20,902 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:18:20,902 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:18:20,902 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:18:20,902 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:18:20,902 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:18:20,902 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:18:21,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:18:21,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:18:21,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:18:21,039 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:18:21,039 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:18:21,040 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe013_tso.i [2023-11-17 15:18:22,171 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:18:22,382 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:18:22,383 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe013_tso.i [2023-11-17 15:18:22,397 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4515b70ad/73ae1256816d4b39850788bd4f5e8f97/FLAGb2d341283 [2023-11-17 15:18:22,410 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4515b70ad/73ae1256816d4b39850788bd4f5e8f97 [2023-11-17 15:18:22,412 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:18:22,413 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:18:22,414 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:18:22,414 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:18:22,426 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:18:22,426 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:18:22" (1/1) ... [2023-11-17 15:18:22,427 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2482b391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:22, skipping insertion in model container [2023-11-17 15:18:22,427 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:18:22" (1/1) ... [2023-11-17 15:18:22,467 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:18:22,590 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-wmm/safe013_tso.i[945,958] [2023-11-17 15:18:22,726 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:18:22,735 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:18:22,744 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-wmm/safe013_tso.i[945,958] [2023-11-17 15:18:22,779 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:18:22,807 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:18:22,808 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:18:22,813 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:18:22,814 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:22 WrapperNode [2023-11-17 15:18:22,814 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:18:22,815 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:18:22,815 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:18:22,816 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:18:22,820 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:22" (1/1) ... [2023-11-17 15:18:22,843 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:22" (1/1) ... [2023-11-17 15:18:22,860 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-11-17 15:18:22,860 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:18:22,861 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:18:22,861 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:18:22,861 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:18:22,867 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:22" (1/1) ... [2023-11-17 15:18:22,868 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:22" (1/1) ... [2023-11-17 15:18:22,881 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:22" (1/1) ... [2023-11-17 15:18:22,881 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:22" (1/1) ... [2023-11-17 15:18:22,885 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:22" (1/1) ... [2023-11-17 15:18:22,886 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:22" (1/1) ... [2023-11-17 15:18:22,887 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:22" (1/1) ... [2023-11-17 15:18:22,888 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:22" (1/1) ... [2023-11-17 15:18:22,889 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:18:22,890 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:18:22,890 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:18:22,890 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:18:22,891 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:22" (1/1) ... [2023-11-17 15:18:22,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:18:22,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:18:22,936 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 15:18:23,001 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 15:18:23,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:18:23,019 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 15:18:23,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:18:23,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:18:23,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:18:23,020 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-17 15:18:23,020 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-17 15:18:23,020 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-17 15:18:23,020 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-17 15:18:23,020 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-17 15:18:23,021 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-17 15:18:23,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:18:23,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 15:18:23,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:18:23,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:18:23,022 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 15:18:23,150 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:18:23,152 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:18:23,305 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:18:23,312 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:18:23,312 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 15:18:23,313 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:18:23 BoogieIcfgContainer [2023-11-17 15:18:23,313 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:18:23,315 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:18:23,315 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:18:23,317 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:18:23,317 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:18:22" (1/3) ... [2023-11-17 15:18:23,317 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@405ea942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:18:23, skipping insertion in model container [2023-11-17 15:18:23,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:18:22" (2/3) ... [2023-11-17 15:18:23,318 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@405ea942 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:18:23, skipping insertion in model container [2023-11-17 15:18:23,318 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:18:23" (3/3) ... [2023-11-17 15:18:23,319 INFO L112 eAbstractionObserver]: Analyzing ICFG safe013_tso.i [2023-11-17 15:18:23,336 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:18:23,336 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:18:23,336 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:18:23,372 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 15:18:23,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 93 transitions, 198 flow [2023-11-17 15:18:23,435 INFO L124 PetriNetUnfolderBase]: 2/90 cut-off events. [2023-11-17 15:18:23,437 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:18:23,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 90 events. 2/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 56 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2023-11-17 15:18:23,441 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 93 transitions, 198 flow [2023-11-17 15:18:23,444 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2023-11-17 15:18:23,446 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:18:23,455 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 75 transitions, 159 flow [2023-11-17 15:18:23,457 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 75 transitions, 159 flow [2023-11-17 15:18:23,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 75 transitions, 159 flow [2023-11-17 15:18:23,472 INFO L124 PetriNetUnfolderBase]: 1/75 cut-off events. [2023-11-17 15:18:23,472 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:18:23,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 1/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 58. Up to 2 conditions per place. [2023-11-17 15:18:23,474 INFO L119 LiptonReduction]: Number of co-enabled transitions 1436 [2023-11-17 15:18:25,108 INFO L134 LiptonReduction]: Checked pairs total: 2155 [2023-11-17 15:18:25,108 INFO L136 LiptonReduction]: Total number of compositions: 64 [2023-11-17 15:18:25,119 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:18:25,124 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;@3160607a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:18:25,124 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 15:18:25,127 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:18:25,127 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-17 15:18:25,127 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:18:25,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:25,127 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:25,128 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:18:25,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:25,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1818846807, now seen corresponding path program 1 times [2023-11-17 15:18:25,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:25,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638652432] [2023-11-17 15:18:25,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:25,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:25,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:25,552 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 15:18:25,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:25,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638652432] [2023-11-17 15:18:25,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638652432] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:25,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:25,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 15:18:25,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73034217] [2023-11-17 15:18:25,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:25,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:18:25,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:25,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:18:25,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:18:25,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 157 [2023-11-17 15:18:25,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:25,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:25,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 157 [2023-11-17 15:18:25,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:25,736 INFO L124 PetriNetUnfolderBase]: 494/795 cut-off events. [2023-11-17 15:18:25,736 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-11-17 15:18:25,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1637 conditions, 795 events. 494/795 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3437 event pairs, 181 based on Foata normal form. 36/831 useless extension candidates. Maximal degree in co-relation 1626. Up to 544 conditions per place. [2023-11-17 15:18:25,745 INFO L140 encePairwiseOnDemand]: 150/157 looper letters, 25 selfloop transitions, 5 changer transitions 0/30 dead transitions. [2023-11-17 15:18:25,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 30 transitions, 135 flow [2023-11-17 15:18:25,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:18:25,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:18:25,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2023-11-17 15:18:25,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5732484076433121 [2023-11-17 15:18:25,759 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 270 transitions. [2023-11-17 15:18:25,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 270 transitions. [2023-11-17 15:18:25,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:25,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 270 transitions. [2023-11-17 15:18:25,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:25,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:25,770 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:25,771 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 270 transitions. [2023-11-17 15:18:25,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 30 transitions, 135 flow [2023-11-17 15:18:25,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 30 transitions, 130 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 15:18:25,774 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 69 flow [2023-11-17 15:18:25,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2023-11-17 15:18:25,778 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-11-17 15:18:25,778 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 69 flow [2023-11-17 15:18:25,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.66666666666667) internal successors, (245), 3 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:25,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:25,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:25,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:18:25,779 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:18:25,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:25,781 INFO L85 PathProgramCache]: Analyzing trace with hash -549676509, now seen corresponding path program 1 times [2023-11-17 15:18:25,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:25,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388714190] [2023-11-17 15:18:25,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:25,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:25,910 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 15:18:25,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:25,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388714190] [2023-11-17 15:18:25,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388714190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:25,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:25,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 15:18:25,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675075951] [2023-11-17 15:18:25,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:25,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:18:25,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:25,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:18:25,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:18:25,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 157 [2023-11-17 15:18:25,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:25,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:25,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 157 [2023-11-17 15:18:25,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:26,002 INFO L124 PetriNetUnfolderBase]: 401/674 cut-off events. [2023-11-17 15:18:26,002 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2023-11-17 15:18:26,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1625 conditions, 674 events. 401/674 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2900 event pairs, 121 based on Foata normal form. 8/661 useless extension candidates. Maximal degree in co-relation 1614. Up to 509 conditions per place. [2023-11-17 15:18:26,005 INFO L140 encePairwiseOnDemand]: 154/157 looper letters, 21 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2023-11-17 15:18:26,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 26 transitions, 132 flow [2023-11-17 15:18:26,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:18:26,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:18:26,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2023-11-17 15:18:26,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.583864118895966 [2023-11-17 15:18:26,009 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 275 transitions. [2023-11-17 15:18:26,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 275 transitions. [2023-11-17 15:18:26,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:26,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 275 transitions. [2023-11-17 15:18:26,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 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 15:18:26,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:26,012 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:26,012 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 69 flow. Second operand 3 states and 275 transitions. [2023-11-17 15:18:26,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 26 transitions, 132 flow [2023-11-17 15:18:26,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 26 transitions, 126 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:18:26,014 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 75 flow [2023-11-17 15:18:26,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2023-11-17 15:18:26,015 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2023-11-17 15:18:26,015 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 75 flow [2023-11-17 15:18:26,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.0) internal successors, (261), 3 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:26,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:26,015 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:26,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:18:26,016 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:18:26,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:26,016 INFO L85 PathProgramCache]: Analyzing trace with hash -549676850, now seen corresponding path program 1 times [2023-11-17 15:18:26,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:26,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879080680] [2023-11-17 15:18:26,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:26,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:26,095 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 15:18:26,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:26,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879080680] [2023-11-17 15:18:26,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879080680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:26,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:26,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 15:18:26,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166581775] [2023-11-17 15:18:26,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:26,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:18:26,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:26,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:18:26,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:18:26,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 157 [2023-11-17 15:18:26,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:26,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:26,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 157 [2023-11-17 15:18:26,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:26,157 INFO L124 PetriNetUnfolderBase]: 390/667 cut-off events. [2023-11-17 15:18:26,158 INFO L125 PetriNetUnfolderBase]: For 179/179 co-relation queries the response was YES. [2023-11-17 15:18:26,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1635 conditions, 667 events. 390/667 cut-off events. For 179/179 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2849 event pairs, 107 based on Foata normal form. 4/659 useless extension candidates. Maximal degree in co-relation 1622. Up to 556 conditions per place. [2023-11-17 15:18:26,162 INFO L140 encePairwiseOnDemand]: 153/157 looper letters, 24 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2023-11-17 15:18:26,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 30 transitions, 159 flow [2023-11-17 15:18:26,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:18:26,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:18:26,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 277 transitions. [2023-11-17 15:18:26,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5881104033970276 [2023-11-17 15:18:26,163 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 277 transitions. [2023-11-17 15:18:26,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 277 transitions. [2023-11-17 15:18:26,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:26,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 277 transitions. [2023-11-17 15:18:26,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.33333333333333) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:26,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:26,166 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:26,166 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 75 flow. Second operand 3 states and 277 transitions. [2023-11-17 15:18:26,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 30 transitions, 159 flow [2023-11-17 15:18:26,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 30 transitions, 153 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 15:18:26,168 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 95 flow [2023-11-17 15:18:26,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2023-11-17 15:18:26,169 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 3 predicate places. [2023-11-17 15:18:26,169 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 95 flow [2023-11-17 15:18:26,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:26,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:26,169 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:26,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:18:26,170 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:18:26,170 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:26,170 INFO L85 PathProgramCache]: Analyzing trace with hash 139896724, now seen corresponding path program 1 times [2023-11-17 15:18:26,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:26,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264509422] [2023-11-17 15:18:26,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:26,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:26,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:26,292 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 15:18:26,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:26,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264509422] [2023-11-17 15:18:26,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264509422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:26,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:26,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:18:26,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871517950] [2023-11-17 15:18:26,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:26,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:18:26,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:26,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:18:26,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:18:26,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 157 [2023-11-17 15:18:26,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 95 flow. Second operand has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:26,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:26,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 157 [2023-11-17 15:18:26,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:26,394 INFO L124 PetriNetUnfolderBase]: 498/803 cut-off events. [2023-11-17 15:18:26,395 INFO L125 PetriNetUnfolderBase]: For 413/413 co-relation queries the response was YES. [2023-11-17 15:18:26,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2192 conditions, 803 events. 498/803 cut-off events. For 413/413 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3380 event pairs, 75 based on Foata normal form. 12/815 useless extension candidates. Maximal degree in co-relation 2178. Up to 263 conditions per place. [2023-11-17 15:18:26,398 INFO L140 encePairwiseOnDemand]: 150/157 looper letters, 40 selfloop transitions, 18 changer transitions 0/58 dead transitions. [2023-11-17 15:18:26,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 58 transitions, 352 flow [2023-11-17 15:18:26,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:18:26,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:18:26,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 436 transitions. [2023-11-17 15:18:26,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5554140127388535 [2023-11-17 15:18:26,400 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 436 transitions. [2023-11-17 15:18:26,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 436 transitions. [2023-11-17 15:18:26,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:26,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 436 transitions. [2023-11-17 15:18:26,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 87.2) internal successors, (436), 5 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:26,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:26,403 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:26,403 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 95 flow. Second operand 5 states and 436 transitions. [2023-11-17 15:18:26,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 58 transitions, 352 flow [2023-11-17 15:18:26,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 58 transitions, 343 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:18:26,407 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 249 flow [2023-11-17 15:18:26,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=249, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2023-11-17 15:18:26,408 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-11-17 15:18:26,408 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 249 flow [2023-11-17 15:18:26,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.5) internal successors, (318), 4 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:26,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:26,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:26,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 15:18:26,409 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:18:26,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:26,410 INFO L85 PathProgramCache]: Analyzing trace with hash 139223404, now seen corresponding path program 2 times [2023-11-17 15:18:26,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:26,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991898588] [2023-11-17 15:18:26,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:26,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:26,480 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 15:18:26,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:26,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991898588] [2023-11-17 15:18:26,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991898588] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:26,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:26,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:18:26,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811601544] [2023-11-17 15:18:26,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:26,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:18:26,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:26,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:18:26,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:18:26,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 157 [2023-11-17 15:18:26,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 249 flow. Second operand has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:26,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:26,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 157 [2023-11-17 15:18:26,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:26,561 INFO L124 PetriNetUnfolderBase]: 530/873 cut-off events. [2023-11-17 15:18:26,561 INFO L125 PetriNetUnfolderBase]: For 1612/1612 co-relation queries the response was YES. [2023-11-17 15:18:26,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2923 conditions, 873 events. 530/873 cut-off events. For 1612/1612 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3809 event pairs, 167 based on Foata normal form. 36/909 useless extension candidates. Maximal degree in co-relation 2904. Up to 322 conditions per place. [2023-11-17 15:18:26,564 INFO L140 encePairwiseOnDemand]: 150/157 looper letters, 28 selfloop transitions, 9 changer transitions 18/55 dead transitions. [2023-11-17 15:18:26,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 55 transitions, 449 flow [2023-11-17 15:18:26,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:18:26,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:18:26,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 426 transitions. [2023-11-17 15:18:26,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5426751592356688 [2023-11-17 15:18:26,565 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 426 transitions. [2023-11-17 15:18:26,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 426 transitions. [2023-11-17 15:18:26,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:26,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 426 transitions. [2023-11-17 15:18:26,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 85.2) internal successors, (426), 5 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:26,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:26,568 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:26,568 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 249 flow. Second operand 5 states and 426 transitions. [2023-11-17 15:18:26,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 55 transitions, 449 flow [2023-11-17 15:18:26,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 55 transitions, 447 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-11-17 15:18:26,571 INFO L231 Difference]: Finished difference. Result has 43 places, 24 transitions, 180 flow [2023-11-17 15:18:26,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=43, PETRI_TRANSITIONS=24} [2023-11-17 15:18:26,571 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2023-11-17 15:18:26,571 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 24 transitions, 180 flow [2023-11-17 15:18:26,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:26,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:26,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:26,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:18:26,572 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:18:26,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:26,572 INFO L85 PathProgramCache]: Analyzing trace with hash 87525035, now seen corresponding path program 1 times [2023-11-17 15:18:26,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:26,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859205704] [2023-11-17 15:18:26,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:26,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:26,621 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 15:18:26,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:26,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859205704] [2023-11-17 15:18:26,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859205704] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:26,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:26,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:18:26,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812732901] [2023-11-17 15:18:26,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:26,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:18:26,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:26,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:18:26,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:18:26,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 157 [2023-11-17 15:18:26,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 24 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:26,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:26,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 157 [2023-11-17 15:18:26,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:26,659 INFO L124 PetriNetUnfolderBase]: 143/273 cut-off events. [2023-11-17 15:18:26,660 INFO L125 PetriNetUnfolderBase]: For 932/940 co-relation queries the response was YES. [2023-11-17 15:18:26,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1027 conditions, 273 events. 143/273 cut-off events. For 932/940 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1027 event pairs, 43 based on Foata normal form. 12/277 useless extension candidates. Maximal degree in co-relation 1004. Up to 216 conditions per place. [2023-11-17 15:18:26,661 INFO L140 encePairwiseOnDemand]: 152/157 looper letters, 34 selfloop transitions, 4 changer transitions 0/40 dead transitions. [2023-11-17 15:18:26,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 40 transitions, 362 flow [2023-11-17 15:18:26,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:18:26,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:18:26,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2023-11-17 15:18:26,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.583864118895966 [2023-11-17 15:18:26,662 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 275 transitions. [2023-11-17 15:18:26,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 275 transitions. [2023-11-17 15:18:26,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:26,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 275 transitions. [2023-11-17 15:18:26,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 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 15:18:26,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:26,664 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:26,664 INFO L175 Difference]: Start difference. First operand has 43 places, 24 transitions, 180 flow. Second operand 3 states and 275 transitions. [2023-11-17 15:18:26,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 40 transitions, 362 flow [2023-11-17 15:18:26,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 40 transitions, 270 flow, removed 10 selfloop flow, removed 9 redundant places. [2023-11-17 15:18:26,666 INFO L231 Difference]: Finished difference. Result has 37 places, 27 transitions, 145 flow [2023-11-17 15:18:26,666 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=37, PETRI_TRANSITIONS=27} [2023-11-17 15:18:26,666 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-11-17 15:18:26,667 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 27 transitions, 145 flow [2023-11-17 15:18:26,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:26,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:26,667 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:26,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:18:26,667 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:18:26,667 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:26,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1794026797, now seen corresponding path program 1 times [2023-11-17 15:18:26,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:26,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25283268] [2023-11-17 15:18:26,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:26,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:26,735 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 15:18:26,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:26,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25283268] [2023-11-17 15:18:26,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25283268] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:26,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:26,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:18:26,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122896473] [2023-11-17 15:18:26,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:26,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:18:26,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:26,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:18:26,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:18:26,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 157 [2023-11-17 15:18:26,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 27 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:26,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:26,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 157 [2023-11-17 15:18:26,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:26,776 INFO L124 PetriNetUnfolderBase]: 88/186 cut-off events. [2023-11-17 15:18:26,776 INFO L125 PetriNetUnfolderBase]: For 178/184 co-relation queries the response was YES. [2023-11-17 15:18:26,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 676 conditions, 186 events. 88/186 cut-off events. For 178/184 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 630 event pairs, 19 based on Foata normal form. 21/202 useless extension candidates. Maximal degree in co-relation 659. Up to 84 conditions per place. [2023-11-17 15:18:26,777 INFO L140 encePairwiseOnDemand]: 152/157 looper letters, 39 selfloop transitions, 7 changer transitions 0/48 dead transitions. [2023-11-17 15:18:26,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 48 transitions, 344 flow [2023-11-17 15:18:26,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:18:26,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:18:26,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 365 transitions. [2023-11-17 15:18:26,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5812101910828026 [2023-11-17 15:18:26,778 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 365 transitions. [2023-11-17 15:18:26,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 365 transitions. [2023-11-17 15:18:26,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:26,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 365 transitions. [2023-11-17 15:18:26,779 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 91.25) internal successors, (365), 4 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:26,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:26,780 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:26,780 INFO L175 Difference]: Start difference. First operand has 37 places, 27 transitions, 145 flow. Second operand 4 states and 365 transitions. [2023-11-17 15:18:26,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 48 transitions, 344 flow [2023-11-17 15:18:26,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 48 transitions, 340 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:18:26,781 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 181 flow [2023-11-17 15:18:26,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2023-11-17 15:18:26,782 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 13 predicate places. [2023-11-17 15:18:26,782 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 181 flow [2023-11-17 15:18:26,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:26,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:26,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:26,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 15:18:26,782 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:18:26,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:26,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1447456827, now seen corresponding path program 1 times [2023-11-17 15:18:26,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:26,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754515808] [2023-11-17 15:18:26,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:26,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:26,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:26,838 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 15:18:26,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:26,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754515808] [2023-11-17 15:18:26,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754515808] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:26,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:26,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:18:26,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749015875] [2023-11-17 15:18:26,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:26,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:18:26,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:26,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:18:26,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:18:26,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 157 [2023-11-17 15:18:26,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 181 flow. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:26,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:26,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 157 [2023-11-17 15:18:26,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:26,889 INFO L124 PetriNetUnfolderBase]: 144/292 cut-off events. [2023-11-17 15:18:26,889 INFO L125 PetriNetUnfolderBase]: For 455/455 co-relation queries the response was YES. [2023-11-17 15:18:26,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1156 conditions, 292 events. 144/292 cut-off events. For 455/455 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1085 event pairs, 32 based on Foata normal form. 5/297 useless extension candidates. Maximal degree in co-relation 1137. Up to 149 conditions per place. [2023-11-17 15:18:26,891 INFO L140 encePairwiseOnDemand]: 154/157 looper letters, 28 selfloop transitions, 2 changer transitions 20/50 dead transitions. [2023-11-17 15:18:26,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 50 transitions, 396 flow [2023-11-17 15:18:26,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:18:26,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:18:26,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 360 transitions. [2023-11-17 15:18:26,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5732484076433121 [2023-11-17 15:18:26,892 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 360 transitions. [2023-11-17 15:18:26,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 360 transitions. [2023-11-17 15:18:26,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:26,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 360 transitions. [2023-11-17 15:18:26,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.0) internal successors, (360), 4 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:26,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:26,894 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 157.0) internal successors, (785), 5 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:26,894 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 181 flow. Second operand 4 states and 360 transitions. [2023-11-17 15:18:26,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 50 transitions, 396 flow [2023-11-17 15:18:26,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 50 transitions, 369 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-11-17 15:18:26,896 INFO L231 Difference]: Finished difference. Result has 43 places, 27 transitions, 155 flow [2023-11-17 15:18:26,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=155, PETRI_PLACES=43, PETRI_TRANSITIONS=27} [2023-11-17 15:18:26,896 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2023-11-17 15:18:26,896 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 27 transitions, 155 flow [2023-11-17 15:18:26,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:26,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:18:26,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:18:26,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 15:18:26,897 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:18:26,897 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:18:26,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1529261355, now seen corresponding path program 2 times [2023-11-17 15:18:26,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:18:26,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417053398] [2023-11-17 15:18:26,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:18:26,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:18:26,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:18:26,956 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 15:18:26,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:18:26,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417053398] [2023-11-17 15:18:26,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417053398] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:18:26,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:18:26,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:18:26,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914158532] [2023-11-17 15:18:26,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:18:26,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:18:26,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:18:26,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:18:26,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:18:26,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 157 [2023-11-17 15:18:26,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 27 transitions, 155 flow. Second operand has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:26,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:18:26,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 157 [2023-11-17 15:18:26,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:18:26,998 INFO L124 PetriNetUnfolderBase]: 93/206 cut-off events. [2023-11-17 15:18:26,999 INFO L125 PetriNetUnfolderBase]: For 295/296 co-relation queries the response was YES. [2023-11-17 15:18:26,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 764 conditions, 206 events. 93/206 cut-off events. For 295/296 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 817 event pairs, 20 based on Foata normal form. 15/214 useless extension candidates. Maximal degree in co-relation 744. Up to 86 conditions per place. [2023-11-17 15:18:27,000 INFO L140 encePairwiseOnDemand]: 152/157 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2023-11-17 15:18:27,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 42 transitions, 308 flow [2023-11-17 15:18:27,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:18:27,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:18:27,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 445 transitions. [2023-11-17 15:18:27,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5668789808917197 [2023-11-17 15:18:27,001 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 445 transitions. [2023-11-17 15:18:27,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 445 transitions. [2023-11-17 15:18:27,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:18:27,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 445 transitions. [2023-11-17 15:18:27,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.0) internal successors, (445), 5 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:27,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:27,003 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 157.0) internal successors, (942), 6 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:27,003 INFO L175 Difference]: Start difference. First operand has 43 places, 27 transitions, 155 flow. Second operand 5 states and 445 transitions. [2023-11-17 15:18:27,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 42 transitions, 308 flow [2023-11-17 15:18:27,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 42 transitions, 286 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 15:18:27,004 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2023-11-17 15:18:27,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2023-11-17 15:18:27,005 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 15 predicate places. [2023-11-17 15:18:27,005 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2023-11-17 15:18:27,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.8) internal successors, (424), 5 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:18:27,007 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 15:18:27,007 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 15:18:27,008 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 15:18:27,008 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 15:18:27,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 15:18:27,008 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1] [2023-11-17 15:18:27,010 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:18:27,010 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:18:27,012 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:18:27 BasicIcfg [2023-11-17 15:18:27,012 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:18:27,012 INFO L158 Benchmark]: Toolchain (without parser) took 4599.39ms. Allocated memory was 248.5MB in the beginning and 328.2MB in the end (delta: 79.7MB). Free memory was 208.4MB in the beginning and 173.0MB in the end (delta: 35.4MB). Peak memory consumption was 114.5MB. Max. memory is 8.0GB. [2023-11-17 15:18:27,013 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 173.0MB. Free memory is still 124.5MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:18:27,013 INFO L158 Benchmark]: CACSL2BoogieTranslator took 401.05ms. Allocated memory is still 248.5MB. Free memory was 208.4MB in the beginning and 188.0MB in the end (delta: 20.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-17 15:18:27,013 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.23ms. Allocated memory is still 248.5MB. Free memory was 188.0MB in the beginning and 185.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:18:27,013 INFO L158 Benchmark]: Boogie Preprocessor took 28.45ms. Allocated memory is still 248.5MB. Free memory was 185.9MB in the beginning and 184.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:18:27,014 INFO L158 Benchmark]: RCFGBuilder took 423.50ms. Allocated memory is still 248.5MB. Free memory was 184.3MB in the beginning and 170.1MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-11-17 15:18:27,014 INFO L158 Benchmark]: TraceAbstraction took 3697.24ms. Allocated memory was 248.5MB in the beginning and 328.2MB in the end (delta: 79.7MB). Free memory was 169.6MB in the beginning and 173.0MB in the end (delta: -3.4MB). Peak memory consumption was 75.8MB. Max. memory is 8.0GB. [2023-11-17 15:18:27,015 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 173.0MB. Free memory is still 124.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 401.05ms. Allocated memory is still 248.5MB. Free memory was 208.4MB in the beginning and 188.0MB in the end (delta: 20.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 45.23ms. Allocated memory is still 248.5MB. Free memory was 188.0MB in the beginning and 185.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.45ms. Allocated memory is still 248.5MB. Free memory was 185.9MB in the beginning and 184.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 423.50ms. Allocated memory is still 248.5MB. Free memory was 184.3MB in the beginning and 170.1MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3697.24ms. Allocated memory was 248.5MB in the beginning and 328.2MB in the end (delta: 79.7MB). Free memory was 169.6MB in the beginning and 173.0MB in the end (delta: -3.4MB). Peak memory consumption was 75.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 84 PlacesBefore, 27 PlacesAfterwards, 75 TransitionsBefore, 18 TransitionsAfterwards, 1436 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 0 ChoiceCompositions, 64 TotalNumberOfCompositions, 2155 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1501, independent: 1427, independent conditional: 0, independent unconditional: 1427, dependent: 74, dependent conditional: 0, dependent unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1003, independent: 968, independent conditional: 0, independent unconditional: 968, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1003, independent: 959, independent conditional: 0, independent unconditional: 959, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 44, independent: 9, independent conditional: 0, independent unconditional: 9, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 61, independent: 13, independent conditional: 0, independent unconditional: 13, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1501, independent: 459, independent conditional: 0, independent unconditional: 459, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 1003, unknown conditional: 0, unknown unconditional: 1003] , Statistics on independence cache: Total cache size (in pairs): 83, Positive cache size: 71, Positive conditional cache size: 0, Positive unconditional cache size: 71, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 120 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.6s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 119 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 119 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 350 IncrementalHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 6 mSDtfsCounter, 350 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=249occurred in iteration=4, InterpolantAutomatonStates: 35, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 347 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 15:18:27,043 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...