/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/safe005_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:17:46,484 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:17:46,572 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 15:17:46,605 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:17:46,606 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:17:46,607 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:17:46,607 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:17:46,608 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:17:46,608 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:17:46,612 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:17:46,612 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:17:46,613 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:17:46,613 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:17:46,614 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:17:46,614 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:17:46,614 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:17:46,615 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:17:46,615 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:17:46,615 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:17:46,615 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:17:46,615 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:17:46,616 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:17:46,616 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:17:46,616 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:17:46,617 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:17:46,617 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:17:46,617 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:17:46,617 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:17:46,617 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:17:46,618 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:17:46,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:17:46,619 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:17:46,619 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:17:46,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:17:46,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:17:46,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:17:46,866 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:17:46,866 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:17:46,867 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.i [2023-11-17 15:17:48,022 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:17:48,260 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:17:48,262 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.i [2023-11-17 15:17:48,282 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abac004be/98ebc1ed856d4d96ac06e7e16a6e3056/FLAGbf85988dc [2023-11-17 15:17:48,299 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/abac004be/98ebc1ed856d4d96ac06e7e16a6e3056 [2023-11-17 15:17:48,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:17:48,303 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:17:48,307 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:17:48,307 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:17:48,310 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:17:48,311 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:17:48" (1/1) ... [2023-11-17 15:17:48,312 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e8038a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:48, skipping insertion in model container [2023-11-17 15:17:48,312 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:17:48" (1/1) ... [2023-11-17 15:17:48,367 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:17:48,530 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/safe005_tso.i[945,958] [2023-11-17 15:17:48,710 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:17:48,721 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:17:48,733 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/safe005_tso.i[945,958] [2023-11-17 15:17:48,779 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:17:48,817 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:17:48,818 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:17:48,825 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:17:48,825 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:48 WrapperNode [2023-11-17 15:17:48,826 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:17:48,827 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:17:48,827 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:17:48,827 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:17:48,834 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:48" (1/1) ... [2023-11-17 15:17:48,863 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:48" (1/1) ... [2023-11-17 15:17:48,886 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-11-17 15:17:48,886 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:17:48,887 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:17:48,887 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:17:48,887 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:17:48,895 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:48" (1/1) ... [2023-11-17 15:17:48,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:48" (1/1) ... [2023-11-17 15:17:48,913 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:48" (1/1) ... [2023-11-17 15:17:48,913 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:48" (1/1) ... [2023-11-17 15:17:48,917 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:48" (1/1) ... [2023-11-17 15:17:48,919 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:48" (1/1) ... [2023-11-17 15:17:48,920 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:48" (1/1) ... [2023-11-17 15:17:48,930 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:48" (1/1) ... [2023-11-17 15:17:48,933 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:17:48,934 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:17:48,934 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:17:48,934 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:17:48,935 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:48" (1/1) ... [2023-11-17 15:17:48,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:17:48,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:17:48,978 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 15:17:49,001 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 15:17:49,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:17:49,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 15:17:49,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:17:49,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:17:49,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:17:49,013 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-17 15:17:49,014 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-17 15:17:49,014 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-17 15:17:49,014 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-17 15:17:49,014 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-17 15:17:49,014 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-17 15:17:49,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:17:49,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 15:17:49,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:17:49,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:17:49,016 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 15:17:49,166 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:17:49,168 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:17:49,350 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:17:49,359 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:17:49,359 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 15:17:49,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:17:49 BoogieIcfgContainer [2023-11-17 15:17:49,361 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:17:49,363 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:17:49,363 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:17:49,366 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:17:49,366 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:17:48" (1/3) ... [2023-11-17 15:17:49,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a89cd81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:17:49, skipping insertion in model container [2023-11-17 15:17:49,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:48" (2/3) ... [2023-11-17 15:17:49,367 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a89cd81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:17:49, skipping insertion in model container [2023-11-17 15:17:49,367 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:17:49" (3/3) ... [2023-11-17 15:17:49,369 INFO L112 eAbstractionObserver]: Analyzing ICFG safe005_tso.i [2023-11-17 15:17:49,384 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:17:49,385 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:17:49,385 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:17:49,434 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 15:17:49,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 93 transitions, 198 flow [2023-11-17 15:17:49,537 INFO L124 PetriNetUnfolderBase]: 2/90 cut-off events. [2023-11-17 15:17:49,537 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:17:49,542 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 15:17:49,542 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 93 transitions, 198 flow [2023-11-17 15:17:49,547 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2023-11-17 15:17:49,550 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:17:49,562 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 75 transitions, 159 flow [2023-11-17 15:17:49,564 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 75 transitions, 159 flow [2023-11-17 15:17:49,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 75 transitions, 159 flow [2023-11-17 15:17:49,588 INFO L124 PetriNetUnfolderBase]: 1/75 cut-off events. [2023-11-17 15:17:49,588 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:17:49,589 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 15:17:49,590 INFO L119 LiptonReduction]: Number of co-enabled transitions 1436 [2023-11-17 15:17:51,763 INFO L134 LiptonReduction]: Checked pairs total: 2155 [2023-11-17 15:17:51,763 INFO L136 LiptonReduction]: Total number of compositions: 64 [2023-11-17 15:17:51,779 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:17:51,785 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;@430ee700, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:17:51,785 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 15:17:51,790 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:17:51,791 INFO L124 PetriNetUnfolderBase]: 0/13 cut-off events. [2023-11-17 15:17:51,791 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:17:51,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:51,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:51,792 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 15:17:51,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:51,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1847475896, now seen corresponding path program 1 times [2023-11-17 15:17:51,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:51,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912106940] [2023-11-17 15:17:51,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:51,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:51,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:52,269 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 15:17:52,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:52,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912106940] [2023-11-17 15:17:52,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912106940] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:52,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:52,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 15:17:52,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647258580] [2023-11-17 15:17:52,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:52,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:17:52,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:52,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:17:52,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:17:52,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 157 [2023-11-17 15:17:52,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 45 flow. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:52,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:52,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 157 [2023-11-17 15:17:52,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:52,487 INFO L124 PetriNetUnfolderBase]: 281/470 cut-off events. [2023-11-17 15:17:52,487 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-17 15:17:52,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 955 conditions, 470 events. 281/470 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1925 event pairs, 71 based on Foata normal form. 8/478 useless extension candidates. Maximal degree in co-relation 944. Up to 411 conditions per place. [2023-11-17 15:17:52,493 INFO L140 encePairwiseOnDemand]: 152/157 looper letters, 24 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2023-11-17 15:17:52,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 28 transitions, 125 flow [2023-11-17 15:17:52,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:17:52,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:17:52,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2023-11-17 15:17:52,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5796178343949044 [2023-11-17 15:17:52,516 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2023-11-17 15:17:52,517 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2023-11-17 15:17:52,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:52,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2023-11-17 15:17:52,527 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:52,531 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 15:17:52,532 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 15:17:52,534 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 45 flow. Second operand 3 states and 273 transitions. [2023-11-17 15:17:52,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 28 transitions, 125 flow [2023-11-17 15:17:52,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 28 transitions, 120 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 15:17:52,540 INFO L231 Difference]: Finished difference. Result has 27 places, 19 transitions, 59 flow [2023-11-17 15:17:52,541 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=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=27, PETRI_TRANSITIONS=19} [2023-11-17 15:17:52,545 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 0 predicate places. [2023-11-17 15:17:52,546 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 19 transitions, 59 flow [2023-11-17 15:17:52,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:52,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:52,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:52,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:17:52,547 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 15:17:52,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:52,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1437178268, now seen corresponding path program 1 times [2023-11-17 15:17:52,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:52,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95528649] [2023-11-17 15:17:52,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:52,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:52,791 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 15:17:52,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:52,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95528649] [2023-11-17 15:17:52,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95528649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:52,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:52,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:17:52,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755172143] [2023-11-17 15:17:52,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:52,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:17:52,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:52,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:17:52,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:17:52,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 157 [2023-11-17 15:17:52,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 19 transitions, 59 flow. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:52,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:52,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 157 [2023-11-17 15:17:52,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:52,906 INFO L124 PetriNetUnfolderBase]: 401/654 cut-off events. [2023-11-17 15:17:52,907 INFO L125 PetriNetUnfolderBase]: For 142/142 co-relation queries the response was YES. [2023-11-17 15:17:52,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1511 conditions, 654 events. 401/654 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2427 event pairs, 155 based on Foata normal form. 56/710 useless extension candidates. Maximal degree in co-relation 1500. Up to 256 conditions per place. [2023-11-17 15:17:52,913 INFO L140 encePairwiseOnDemand]: 151/157 looper letters, 27 selfloop transitions, 6 changer transitions 2/35 dead transitions. [2023-11-17 15:17:52,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 35 transitions, 173 flow [2023-11-17 15:17:52,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:17:52,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:17:52,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 341 transitions. [2023-11-17 15:17:52,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5429936305732485 [2023-11-17 15:17:52,916 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 341 transitions. [2023-11-17 15:17:52,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 341 transitions. [2023-11-17 15:17:52,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:52,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 341 transitions. [2023-11-17 15:17:52,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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 15:17:52,922 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 15:17:52,922 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 15:17:52,923 INFO L175 Difference]: Start difference. First operand has 27 places, 19 transitions, 59 flow. Second operand 4 states and 341 transitions. [2023-11-17 15:17:52,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 35 transitions, 173 flow [2023-11-17 15:17:52,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 35 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:17:52,924 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 106 flow [2023-11-17 15:17:52,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-11-17 15:17:52,925 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-11-17 15:17:52,926 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 106 flow [2023-11-17 15:17:52,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:52,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:52,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:52,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:17:52,928 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 15:17:52,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:52,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1850789236, now seen corresponding path program 1 times [2023-11-17 15:17:52,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:52,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320472818] [2023-11-17 15:17:52,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:52,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:53,118 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 15:17:53,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:53,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320472818] [2023-11-17 15:17:53,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320472818] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:53,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:53,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:17:53,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186302725] [2023-11-17 15:17:53,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:53,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:17:53,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:53,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:17:53,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:17:53,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 157 [2023-11-17 15:17:53,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:53,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:53,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 157 [2023-11-17 15:17:53,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:53,244 INFO L124 PetriNetUnfolderBase]: 385/686 cut-off events. [2023-11-17 15:17:53,244 INFO L125 PetriNetUnfolderBase]: For 644/644 co-relation queries the response was YES. [2023-11-17 15:17:53,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1809 conditions, 686 events. 385/686 cut-off events. For 644/644 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3235 event pairs, 81 based on Foata normal form. 24/706 useless extension candidates. Maximal degree in co-relation 1794. Up to 316 conditions per place. [2023-11-17 15:17:53,250 INFO L140 encePairwiseOnDemand]: 152/157 looper letters, 27 selfloop transitions, 4 changer transitions 7/40 dead transitions. [2023-11-17 15:17:53,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 40 transitions, 240 flow [2023-11-17 15:17:53,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:17:53,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:17:53,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 355 transitions. [2023-11-17 15:17:53,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5652866242038217 [2023-11-17 15:17:53,252 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 355 transitions. [2023-11-17 15:17:53,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 355 transitions. [2023-11-17 15:17:53,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:53,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 355 transitions. [2023-11-17 15:17:53,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.75) internal successors, (355), 4 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:53,255 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 15:17:53,255 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 15:17:53,255 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 106 flow. Second operand 4 states and 355 transitions. [2023-11-17 15:17:53,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 40 transitions, 240 flow [2023-11-17 15:17:53,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 237 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:17:53,260 INFO L231 Difference]: Finished difference. Result has 35 places, 22 transitions, 109 flow [2023-11-17 15:17:53,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=109, PETRI_PLACES=35, PETRI_TRANSITIONS=22} [2023-11-17 15:17:53,261 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2023-11-17 15:17:53,261 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 22 transitions, 109 flow [2023-11-17 15:17:53,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:53,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:53,262 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:53,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:17:53,263 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 15:17:53,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:53,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1540667523, now seen corresponding path program 1 times [2023-11-17 15:17:53,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:53,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447747072] [2023-11-17 15:17:53,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:53,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:53,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:53,429 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 15:17:53,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:53,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447747072] [2023-11-17 15:17:53,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447747072] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:53,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:53,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:17:53,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695696718] [2023-11-17 15:17:53,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:53,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:17:53,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:53,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:17:53,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:17:53,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 157 [2023-11-17 15:17:53,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 22 transitions, 109 flow. Second operand has 5 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:53,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:53,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 157 [2023-11-17 15:17:53,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:53,563 INFO L124 PetriNetUnfolderBase]: 573/946 cut-off events. [2023-11-17 15:17:53,563 INFO L125 PetriNetUnfolderBase]: For 995/995 co-relation queries the response was YES. [2023-11-17 15:17:53,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2749 conditions, 946 events. 573/946 cut-off events. For 995/995 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4243 event pairs, 121 based on Foata normal form. 20/966 useless extension candidates. Maximal degree in co-relation 2732. Up to 462 conditions per place. [2023-11-17 15:17:53,568 INFO L140 encePairwiseOnDemand]: 150/157 looper letters, 30 selfloop transitions, 9 changer transitions 10/49 dead transitions. [2023-11-17 15:17:53,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 49 transitions, 309 flow [2023-11-17 15:17:53,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:17:53,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:17:53,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 429 transitions. [2023-11-17 15:17:53,570 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5464968152866242 [2023-11-17 15:17:53,570 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 429 transitions. [2023-11-17 15:17:53,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 429 transitions. [2023-11-17 15:17:53,571 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:53,571 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 429 transitions. [2023-11-17 15:17:53,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 85.8) internal successors, (429), 5 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:53,573 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 15:17:53,574 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 15:17:53,574 INFO L175 Difference]: Start difference. First operand has 35 places, 22 transitions, 109 flow. Second operand 5 states and 429 transitions. [2023-11-17 15:17:53,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 49 transitions, 309 flow [2023-11-17 15:17:53,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 49 transitions, 293 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-17 15:17:53,577 INFO L231 Difference]: Finished difference. Result has 39 places, 24 transitions, 152 flow [2023-11-17 15:17:53,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=152, PETRI_PLACES=39, PETRI_TRANSITIONS=24} [2023-11-17 15:17:53,578 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 12 predicate places. [2023-11-17 15:17:53,578 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 24 transitions, 152 flow [2023-11-17 15:17:53,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:53,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:53,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:53,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 15:17:53,579 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 15:17:53,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:53,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1550498553, now seen corresponding path program 2 times [2023-11-17 15:17:53,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:53,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068351135] [2023-11-17 15:17:53,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:53,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:53,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:53,687 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 15:17:53,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:53,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068351135] [2023-11-17 15:17:53,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068351135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:53,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:53,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:17:53,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515549958] [2023-11-17 15:17:53,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:53,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:17:53,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:53,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:17:53,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:17:53,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 157 [2023-11-17 15:17:53,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 24 transitions, 152 flow. Second operand has 5 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:53,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:53,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 157 [2023-11-17 15:17:53,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:53,894 INFO L124 PetriNetUnfolderBase]: 559/964 cut-off events. [2023-11-17 15:17:53,896 INFO L125 PetriNetUnfolderBase]: For 1390/1390 co-relation queries the response was YES. [2023-11-17 15:17:53,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2879 conditions, 964 events. 559/964 cut-off events. For 1390/1390 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4647 event pairs, 99 based on Foata normal form. 24/988 useless extension candidates. Maximal degree in co-relation 2860. Up to 252 conditions per place. [2023-11-17 15:17:53,900 INFO L140 encePairwiseOnDemand]: 150/157 looper letters, 30 selfloop transitions, 9 changer transitions 23/62 dead transitions. [2023-11-17 15:17:53,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 62 transitions, 420 flow [2023-11-17 15:17:53,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:17:53,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:17:53,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 598 transitions. [2023-11-17 15:17:53,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5441310282074613 [2023-11-17 15:17:53,903 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 598 transitions. [2023-11-17 15:17:53,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 598 transitions. [2023-11-17 15:17:53,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:53,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 598 transitions. [2023-11-17 15:17:53,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 85.42857142857143) internal successors, (598), 7 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:53,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:53,907 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 157.0) internal successors, (1256), 8 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:53,907 INFO L175 Difference]: Start difference. First operand has 39 places, 24 transitions, 152 flow. Second operand 7 states and 598 transitions. [2023-11-17 15:17:53,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 62 transitions, 420 flow [2023-11-17 15:17:53,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 62 transitions, 391 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-17 15:17:53,915 INFO L231 Difference]: Finished difference. Result has 46 places, 24 transitions, 178 flow [2023-11-17 15:17:53,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=178, PETRI_PLACES=46, PETRI_TRANSITIONS=24} [2023-11-17 15:17:53,917 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2023-11-17 15:17:53,917 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 24 transitions, 178 flow [2023-11-17 15:17:53,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:53,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:53,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:53,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:17:53,918 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 15:17:53,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:53,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1464498580, now seen corresponding path program 1 times [2023-11-17 15:17:53,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:53,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528730365] [2023-11-17 15:17:53,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:53,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:53,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:54,030 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 15:17:54,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:54,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528730365] [2023-11-17 15:17:54,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528730365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:54,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:54,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:17:54,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524357502] [2023-11-17 15:17:54,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:54,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:17:54,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:54,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:17:54,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:17:54,033 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 157 [2023-11-17 15:17:54,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 24 transitions, 178 flow. Second operand has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:54,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:54,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 157 [2023-11-17 15:17:54,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:54,134 INFO L124 PetriNetUnfolderBase]: 313/570 cut-off events. [2023-11-17 15:17:54,134 INFO L125 PetriNetUnfolderBase]: For 1104/1104 co-relation queries the response was YES. [2023-11-17 15:17:54,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1825 conditions, 570 events. 313/570 cut-off events. For 1104/1104 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2468 event pairs, 97 based on Foata normal form. 16/586 useless extension candidates. Maximal degree in co-relation 1802. Up to 270 conditions per place. [2023-11-17 15:17:54,137 INFO L140 encePairwiseOnDemand]: 154/157 looper letters, 20 selfloop transitions, 2 changer transitions 17/39 dead transitions. [2023-11-17 15:17:54,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 323 flow [2023-11-17 15:17:54,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:17:54,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:17:54,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 361 transitions. [2023-11-17 15:17:54,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5748407643312102 [2023-11-17 15:17:54,139 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 361 transitions. [2023-11-17 15:17:54,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 361 transitions. [2023-11-17 15:17:54,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:54,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 361 transitions. [2023-11-17 15:17:54,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.25) internal successors, (361), 4 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:54,141 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 15:17:54,143 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 15:17:54,143 INFO L175 Difference]: Start difference. First operand has 46 places, 24 transitions, 178 flow. Second operand 4 states and 361 transitions. [2023-11-17 15:17:54,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 323 flow [2023-11-17 15:17:54,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 301 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-11-17 15:17:54,147 INFO L231 Difference]: Finished difference. Result has 44 places, 17 transitions, 92 flow [2023-11-17 15:17:54,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=92, PETRI_PLACES=44, PETRI_TRANSITIONS=17} [2023-11-17 15:17:54,149 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 17 predicate places. [2023-11-17 15:17:54,150 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 17 transitions, 92 flow [2023-11-17 15:17:54,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:54,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:54,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:54,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:17:54,152 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 15:17:54,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:54,152 INFO L85 PathProgramCache]: Analyzing trace with hash 73275711, now seen corresponding path program 1 times [2023-11-17 15:17:54,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:54,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543780912] [2023-11-17 15:17:54,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:54,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:54,241 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 15:17:54,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:54,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543780912] [2023-11-17 15:17:54,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543780912] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:54,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:54,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:17:54,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496136700] [2023-11-17 15:17:54,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:54,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:17:54,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:54,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:17:54,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:17:54,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 157 [2023-11-17 15:17:54,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 17 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:54,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:54,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 157 [2023-11-17 15:17:54,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:54,278 INFO L124 PetriNetUnfolderBase]: 37/88 cut-off events. [2023-11-17 15:17:54,278 INFO L125 PetriNetUnfolderBase]: For 200/203 co-relation queries the response was YES. [2023-11-17 15:17:54,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 88 events. 37/88 cut-off events. For 200/203 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 214 event pairs, 13 based on Foata normal form. 6/93 useless extension candidates. Maximal degree in co-relation 268. Up to 66 conditions per place. [2023-11-17 15:17:54,279 INFO L140 encePairwiseOnDemand]: 152/157 looper letters, 20 selfloop transitions, 3 changer transitions 1/25 dead transitions. [2023-11-17 15:17:54,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 25 transitions, 178 flow [2023-11-17 15:17:54,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:17:54,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:17:54,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 271 transitions. [2023-11-17 15:17:54,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5753715498938429 [2023-11-17 15:17:54,281 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 271 transitions. [2023-11-17 15:17:54,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 271 transitions. [2023-11-17 15:17:54,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:54,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 271 transitions. [2023-11-17 15:17:54,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.33333333333333) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:54,283 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 15:17:54,283 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 15:17:54,283 INFO L175 Difference]: Start difference. First operand has 44 places, 17 transitions, 92 flow. Second operand 3 states and 271 transitions. [2023-11-17 15:17:54,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 25 transitions, 178 flow [2023-11-17 15:17:54,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 25 transitions, 129 flow, removed 8 selfloop flow, removed 13 redundant places. [2023-11-17 15:17:54,285 INFO L231 Difference]: Finished difference. Result has 33 places, 19 transitions, 78 flow [2023-11-17 15:17:54,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=33, PETRI_TRANSITIONS=19} [2023-11-17 15:17:54,286 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2023-11-17 15:17:54,286 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 19 transitions, 78 flow [2023-11-17 15:17:54,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:54,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:54,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:54,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 15:17:54,286 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 15:17:54,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:54,287 INFO L85 PathProgramCache]: Analyzing trace with hash 2100776177, now seen corresponding path program 1 times [2023-11-17 15:17:54,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:54,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944561635] [2023-11-17 15:17:54,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:54,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:54,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:54,385 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 15:17:54,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:54,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944561635] [2023-11-17 15:17:54,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944561635] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:54,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:54,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:17:54,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542358429] [2023-11-17 15:17:54,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:54,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:17:54,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:54,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:17:54,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:17:54,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 157 [2023-11-17 15:17:54,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 19 transitions, 78 flow. Second operand has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:54,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:54,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 157 [2023-11-17 15:17:54,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:54,421 INFO L124 PetriNetUnfolderBase]: 19/56 cut-off events. [2023-11-17 15:17:54,421 INFO L125 PetriNetUnfolderBase]: For 14/19 co-relation queries the response was YES. [2023-11-17 15:17:54,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 56 events. 19/56 cut-off events. For 14/19 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 97 event pairs, 5 based on Foata normal form. 7/62 useless extension candidates. Maximal degree in co-relation 174. Up to 27 conditions per place. [2023-11-17 15:17:54,422 INFO L140 encePairwiseOnDemand]: 152/157 looper letters, 19 selfloop transitions, 5 changer transitions 3/28 dead transitions. [2023-11-17 15:17:54,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 28 transitions, 166 flow [2023-11-17 15:17:54,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:17:54,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:17:54,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 356 transitions. [2023-11-17 15:17:54,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5668789808917197 [2023-11-17 15:17:54,424 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 356 transitions. [2023-11-17 15:17:54,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 356 transitions. [2023-11-17 15:17:54,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:54,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 356 transitions. [2023-11-17 15:17:54,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.0) internal successors, (356), 4 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:54,426 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 15:17:54,426 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 15:17:54,426 INFO L175 Difference]: Start difference. First operand has 33 places, 19 transitions, 78 flow. Second operand 4 states and 356 transitions. [2023-11-17 15:17:54,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 28 transitions, 166 flow [2023-11-17 15:17:54,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 28 transitions, 158 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 15:17:54,427 INFO L231 Difference]: Finished difference. Result has 35 places, 19 transitions, 89 flow [2023-11-17 15:17:54,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=89, PETRI_PLACES=35, PETRI_TRANSITIONS=19} [2023-11-17 15:17:54,428 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 8 predicate places. [2023-11-17 15:17:54,428 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 19 transitions, 89 flow [2023-11-17 15:17:54,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:54,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:54,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:54,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 15:17:54,429 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 15:17:54,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:54,429 INFO L85 PathProgramCache]: Analyzing trace with hash 699531960, now seen corresponding path program 1 times [2023-11-17 15:17:54,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:54,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886853269] [2023-11-17 15:17:54,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:54,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:54,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:54,580 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 15:17:54,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:54,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886853269] [2023-11-17 15:17:54,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886853269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:54,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:54,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:17:54,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233302756] [2023-11-17 15:17:54,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:54,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:17:54,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:54,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:17:54,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:17:54,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 157 [2023-11-17 15:17:54,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 19 transitions, 89 flow. Second operand has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:54,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:54,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 157 [2023-11-17 15:17:54,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:54,614 INFO L124 PetriNetUnfolderBase]: 13/41 cut-off events. [2023-11-17 15:17:54,614 INFO L125 PetriNetUnfolderBase]: For 42/46 co-relation queries the response was YES. [2023-11-17 15:17:54,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 41 events. 13/41 cut-off events. For 42/46 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 4 based on Foata normal form. 4/45 useless extension candidates. Maximal degree in co-relation 134. Up to 19 conditions per place. [2023-11-17 15:17:54,615 INFO L140 encePairwiseOnDemand]: 152/157 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2023-11-17 15:17:54,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 24 transitions, 150 flow [2023-11-17 15:17:54,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:17:54,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:17:54,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 434 transitions. [2023-11-17 15:17:54,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5528662420382165 [2023-11-17 15:17:54,617 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 434 transitions. [2023-11-17 15:17:54,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 434 transitions. [2023-11-17 15:17:54,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:54,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 434 transitions. [2023-11-17 15:17:54,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.8) internal successors, (434), 5 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:54,620 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 15:17:54,620 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 15:17:54,620 INFO L175 Difference]: Start difference. First operand has 35 places, 19 transitions, 89 flow. Second operand 5 states and 434 transitions. [2023-11-17 15:17:54,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 24 transitions, 150 flow [2023-11-17 15:17:54,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 24 transitions, 132 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-17 15:17:54,621 INFO L231 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2023-11-17 15:17:54,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2023-11-17 15:17:54,622 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-11-17 15:17:54,622 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2023-11-17 15:17:54,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:54,625 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 15:17:54,626 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 15:17:54,626 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 15:17:54,626 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 15:17:54,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 15:17:54,627 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:54,630 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:17:54,630 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:17:54,633 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:17:54 BasicIcfg [2023-11-17 15:17:54,633 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:17:54,634 INFO L158 Benchmark]: Toolchain (without parser) took 6330.55ms. Allocated memory was 304.1MB in the beginning and 367.0MB in the end (delta: 62.9MB). Free memory was 243.6MB in the beginning and 316.5MB in the end (delta: -72.8MB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:17:54,634 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 183.5MB. Free memory is still 134.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:17:54,634 INFO L158 Benchmark]: CACSL2BoogieTranslator took 518.89ms. Allocated memory is still 304.1MB. Free memory was 243.1MB in the beginning and 222.7MB in the end (delta: 20.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-17 15:17:54,634 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.47ms. Allocated memory is still 304.1MB. Free memory was 222.7MB in the beginning and 221.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:17:54,635 INFO L158 Benchmark]: Boogie Preprocessor took 46.15ms. Allocated memory is still 304.1MB. Free memory was 221.1MB in the beginning and 219.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 15:17:54,635 INFO L158 Benchmark]: RCFGBuilder took 427.01ms. Allocated memory is still 304.1MB. Free memory was 219.5MB in the beginning and 204.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-11-17 15:17:54,635 INFO L158 Benchmark]: TraceAbstraction took 5270.41ms. Allocated memory was 304.1MB in the beginning and 367.0MB in the end (delta: 62.9MB). Free memory was 203.8MB in the beginning and 316.5MB in the end (delta: -112.7MB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:17:54,637 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 183.5MB. Free memory is still 134.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 518.89ms. Allocated memory is still 304.1MB. Free memory was 243.1MB in the beginning and 222.7MB in the end (delta: 20.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 59.47ms. Allocated memory is still 304.1MB. Free memory was 222.7MB in the beginning and 221.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 46.15ms. Allocated memory is still 304.1MB. Free memory was 221.1MB in the beginning and 219.5MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 427.01ms. Allocated memory is still 304.1MB. Free memory was 219.5MB in the beginning and 204.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 5270.41ms. Allocated memory was 304.1MB in the beginning and 367.0MB in the end (delta: 62.9MB). Free memory was 203.8MB in the beginning and 316.5MB in the end (delta: -112.7MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 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: 1350, independent: 1276, independent conditional: 0, independent unconditional: 1276, 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: 976, independent: 940, independent conditional: 0, independent unconditional: 940, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 976, independent: 931, independent conditional: 0, independent unconditional: 931, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 45, independent: 9, independent conditional: 0, independent unconditional: 9, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 139, independent: 31, independent conditional: 0, independent unconditional: 31, dependent: 107, dependent conditional: 0, dependent unconditional: 107, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1350, independent: 336, independent conditional: 0, independent unconditional: 336, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 976, unknown conditional: 0, unknown unconditional: 976] , Statistics on independence cache: Total cache size (in pairs): 72, Positive cache size: 60, Positive conditional cache size: 0, Positive unconditional cache size: 60, 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: 5.2s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 133 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 133 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 396 IncrementalHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 6 mSDtfsCounter, 396 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=178occurred in iteration=5, InterpolantAutomatonStates: 39, 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, 1.3s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 99 ConstructedInterpolants, 0 QuantifiedInterpolants, 309 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 15:17:54,659 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...