/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:58:38,405 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:58:38,476 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 15:58:38,508 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:58:38,509 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:58:38,509 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:58:38,510 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:58:38,510 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:58:38,511 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:58:38,514 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:58:38,515 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:58:38,515 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:58:38,515 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:58:38,516 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:58:38,517 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:58:38,517 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:58:38,517 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:58:38,517 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:58:38,517 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:58:38,518 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:58:38,518 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:58:38,519 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:58:38,519 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:58:38,519 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:58:38,519 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:58:38,519 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:58:38,519 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:58:38,520 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:58:38,520 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:58:38,520 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:58:38,521 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:58:38,521 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:58:38,521 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:58:38,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:58:38,759 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:58:38,761 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:58:38,762 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:58:38,764 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:58:38,765 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c [2023-11-17 15:58:39,866 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:58:40,044 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:58:40,045 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c [2023-11-17 15:58:40,051 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06073767a/0f707d0dbe8c42b086cbb8a351c26cdb/FLAG72bcbe660 [2023-11-17 15:58:40,064 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/06073767a/0f707d0dbe8c42b086cbb8a351c26cdb [2023-11-17 15:58:40,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:58:40,069 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:58:40,071 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:58:40,071 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:58:40,075 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:58:40,075 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:58:40" (1/1) ... [2023-11-17 15:58:40,076 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e643599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:58:40, skipping insertion in model container [2023-11-17 15:58:40,076 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:58:40" (1/1) ... [2023-11-17 15:58:40,101 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:58:40,222 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c[2644,2657] [2023-11-17 15:58:40,228 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:58:40,245 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:58:40,263 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/loop-tiling-eq.wvr.c[2644,2657] [2023-11-17 15:58:40,269 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:58:40,282 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:58:40,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:58:40 WrapperNode [2023-11-17 15:58:40,283 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:58:40,283 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:58:40,284 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:58:40,284 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:58:40,289 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:58:40" (1/1) ... [2023-11-17 15:58:40,296 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:58:40" (1/1) ... [2023-11-17 15:58:40,324 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 196 [2023-11-17 15:58:40,325 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:58:40,325 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:58:40,325 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:58:40,325 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:58:40,331 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:58:40" (1/1) ... [2023-11-17 15:58:40,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:58:40" (1/1) ... [2023-11-17 15:58:40,338 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:58:40" (1/1) ... [2023-11-17 15:58:40,338 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:58:40" (1/1) ... [2023-11-17 15:58:40,346 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:58:40" (1/1) ... [2023-11-17 15:58:40,349 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:58:40" (1/1) ... [2023-11-17 15:58:40,351 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:58:40" (1/1) ... [2023-11-17 15:58:40,353 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:58:40" (1/1) ... [2023-11-17 15:58:40,356 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:58:40,356 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:58:40,357 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:58:40,357 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:58:40,357 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:58:40" (1/1) ... [2023-11-17 15:58:40,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:58:40,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:58:40,402 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 15:58:40,427 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 15:58:40,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:58:40,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-17 15:58:40,433 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:58:40,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:58:40,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 15:58:40,433 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-17 15:58:40,434 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 15:58:40,434 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 15:58:40,435 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 15:58:40,435 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 15:58:40,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:58:40,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-17 15:58:40,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:58:40,435 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:58:40,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:58:40,437 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 15:58:40,569 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:58:40,571 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:58:40,997 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:58:41,013 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:58:41,014 INFO L307 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-17 15:58:41,015 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:58:41 BoogieIcfgContainer [2023-11-17 15:58:41,015 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:58:41,017 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:58:41,017 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:58:41,019 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:58:41,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:58:40" (1/3) ... [2023-11-17 15:58:41,020 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2129a77d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:58:41, skipping insertion in model container [2023-11-17 15:58:41,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:58:40" (2/3) ... [2023-11-17 15:58:41,020 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2129a77d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:58:41, skipping insertion in model container [2023-11-17 15:58:41,021 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:58:41" (3/3) ... [2023-11-17 15:58:41,021 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2023-11-17 15:58:41,032 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:58:41,033 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:58:41,033 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:58:41,106 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 15:58:41,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 291 transitions, 596 flow [2023-11-17 15:58:41,234 INFO L124 PetriNetUnfolderBase]: 26/289 cut-off events. [2023-11-17 15:58:41,235 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:58:41,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 289 events. 26/289 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 302 event pairs, 0 based on Foata normal form. 0/262 useless extension candidates. Maximal degree in co-relation 218. Up to 2 conditions per place. [2023-11-17 15:58:41,240 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 291 transitions, 596 flow [2023-11-17 15:58:41,245 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 261 places, 280 transitions, 572 flow [2023-11-17 15:58:41,248 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:58:41,263 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 261 places, 280 transitions, 572 flow [2023-11-17 15:58:41,265 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 261 places, 280 transitions, 572 flow [2023-11-17 15:58:41,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 280 transitions, 572 flow [2023-11-17 15:58:41,315 INFO L124 PetriNetUnfolderBase]: 26/280 cut-off events. [2023-11-17 15:58:41,315 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:58:41,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 280 events. 26/280 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 299 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 218. Up to 2 conditions per place. [2023-11-17 15:58:41,318 INFO L119 LiptonReduction]: Number of co-enabled transitions 1212 [2023-11-17 15:59:05,402 INFO L134 LiptonReduction]: Checked pairs total: 1678 [2023-11-17 15:59:05,403 INFO L136 LiptonReduction]: Total number of compositions: 317 [2023-11-17 15:59:05,415 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:59:05,420 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;@1b4267c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:59:05,420 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 15:59:05,426 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:59:05,426 INFO L124 PetriNetUnfolderBase]: 7/27 cut-off events. [2023-11-17 15:59:05,426 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:59:05,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:05,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:05,427 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:05,431 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:05,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1863382562, now seen corresponding path program 1 times [2023-11-17 15:59:05,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:05,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203890047] [2023-11-17 15:59:05,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:05,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:05,518 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 15:59:05,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2090596059] [2023-11-17 15:59:05,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:05,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:05,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:05,526 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:05,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 15:59:05,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:05,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-17 15:59:05,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:05,713 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 15:59:05,713 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:59:05,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:05,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203890047] [2023-11-17 15:59:05,715 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-17 15:59:05,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090596059] [2023-11-17 15:59:05,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090596059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:59:05,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:59:05,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:59:05,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320391864] [2023-11-17 15:59:05,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:59:05,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:59:05,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:05,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:59:05,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:59:05,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 248 out of 608 [2023-11-17 15:59:05,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 28 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:05,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:05,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 248 of 608 [2023-11-17 15:59:05,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:05,885 INFO L124 PetriNetUnfolderBase]: 183/326 cut-off events. [2023-11-17 15:59:05,886 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-11-17 15:59:05,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 672 conditions, 326 events. 183/326 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1098 event pairs, 114 based on Foata normal form. 1/256 useless extension candidates. Maximal degree in co-relation 264. Up to 159 conditions per place. [2023-11-17 15:59:05,889 INFO L140 encePairwiseOnDemand]: 604/608 looper letters, 28 selfloop transitions, 2 changer transitions 18/49 dead transitions. [2023-11-17 15:59:05,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 49 transitions, 218 flow [2023-11-17 15:59:05,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:59:05,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:59:05,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1041 transitions. [2023-11-17 15:59:05,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42804276315789475 [2023-11-17 15:59:05,909 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1041 transitions. [2023-11-17 15:59:05,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1041 transitions. [2023-11-17 15:59:05,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:05,915 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1041 transitions. [2023-11-17 15:59:05,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 260.25) internal successors, (1041), 4 states have internal predecessors, (1041), 0 states have call successors, (0), 0 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 15:59:05,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 608.0) internal successors, (3040), 5 states have internal predecessors, (3040), 0 states have call successors, (0), 0 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 15:59:05,929 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 608.0) internal successors, (3040), 5 states have internal predecessors, (3040), 0 states have call successors, (0), 0 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 15:59:05,931 INFO L175 Difference]: Start difference. First operand has 28 places, 28 transitions, 68 flow. Second operand 4 states and 1041 transitions. [2023-11-17 15:59:05,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 49 transitions, 218 flow [2023-11-17 15:59:05,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 49 transitions, 202 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 15:59:05,936 INFO L231 Difference]: Finished difference. Result has 29 places, 29 transitions, 74 flow [2023-11-17 15:59:05,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=608, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=29, PETRI_TRANSITIONS=29} [2023-11-17 15:59:05,942 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2023-11-17 15:59:05,943 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 74 flow [2023-11-17 15:59:05,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:05,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:05,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:05,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:06,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-17 15:59:06,151 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:06,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:06,152 INFO L85 PathProgramCache]: Analyzing trace with hash -114617912, now seen corresponding path program 1 times [2023-11-17 15:59:06,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:06,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432522046] [2023-11-17 15:59:06,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:06,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:06,180 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 15:59:06,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1795806667] [2023-11-17 15:59:06,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:06,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:06,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:06,189 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:06,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 15:59:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:06,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-17 15:59:06,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:06,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:06,406 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:06,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:06,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:06,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432522046] [2023-11-17 15:59:06,440 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-17 15:59:06,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795806667] [2023-11-17 15:59:06,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795806667] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:06,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:59:06,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2023-11-17 15:59:06,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981297474] [2023-11-17 15:59:06,441 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:06,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:59:06,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:06,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:59:06,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:59:06,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 608 [2023-11-17 15:59:06,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 74 flow. Second operand has 6 states, 6 states have (on average 245.5) internal successors, (1473), 6 states have internal predecessors, (1473), 0 states have call successors, (0), 0 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 15:59:06,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:06,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 608 [2023-11-17 15:59:06,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:06,596 INFO L124 PetriNetUnfolderBase]: 174/291 cut-off events. [2023-11-17 15:59:06,596 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-17 15:59:06,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 291 events. 174/291 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 858 event pairs, 33 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 590. Up to 106 conditions per place. [2023-11-17 15:59:06,598 INFO L140 encePairwiseOnDemand]: 601/608 looper letters, 42 selfloop transitions, 7 changer transitions 0/49 dead transitions. [2023-11-17 15:59:06,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 49 transitions, 214 flow [2023-11-17 15:59:06,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:59:06,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:59:06,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1743 transitions. [2023-11-17 15:59:06,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4095394736842105 [2023-11-17 15:59:06,603 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1743 transitions. [2023-11-17 15:59:06,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1743 transitions. [2023-11-17 15:59:06,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:06,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1743 transitions. [2023-11-17 15:59:06,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 249.0) internal successors, (1743), 7 states have internal predecessors, (1743), 0 states have call successors, (0), 0 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 15:59:06,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 608.0) internal successors, (4864), 8 states have internal predecessors, (4864), 0 states have call successors, (0), 0 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 15:59:06,616 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 608.0) internal successors, (4864), 8 states have internal predecessors, (4864), 0 states have call successors, (0), 0 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 15:59:06,616 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 74 flow. Second operand 7 states and 1743 transitions. [2023-11-17 15:59:06,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 49 transitions, 214 flow [2023-11-17 15:59:06,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 49 transitions, 210 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 15:59:06,618 INFO L231 Difference]: Finished difference. Result has 35 places, 32 transitions, 105 flow [2023-11-17 15:59:06,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=608, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=105, PETRI_PLACES=35, PETRI_TRANSITIONS=32} [2023-11-17 15:59:06,618 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 7 predicate places. [2023-11-17 15:59:06,619 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 105 flow [2023-11-17 15:59:06,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 245.5) internal successors, (1473), 6 states have internal predecessors, (1473), 0 states have call successors, (0), 0 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 15:59:06,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:06,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:06,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:06,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-17 15:59:06,826 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:06,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:06,826 INFO L85 PathProgramCache]: Analyzing trace with hash 985319896, now seen corresponding path program 1 times [2023-11-17 15:59:06,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:06,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537220668] [2023-11-17 15:59:06,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:06,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:06,845 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 15:59:06,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [559696883] [2023-11-17 15:59:06,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:06,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:06,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:06,847 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:06,867 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 15:59:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:06,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-17 15:59:06,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:06,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:59:06,998 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:59:06,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:06,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537220668] [2023-11-17 15:59:06,998 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-17 15:59:06,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [559696883] [2023-11-17 15:59:06,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [559696883] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:59:07,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:59:07,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:59:07,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062548968] [2023-11-17 15:59:07,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:59:07,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:59:07,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:07,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:59:07,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:59:07,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 608 [2023-11-17 15:59:07,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 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 15:59:07,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:07,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 608 [2023-11-17 15:59:07,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:07,155 INFO L124 PetriNetUnfolderBase]: 347/579 cut-off events. [2023-11-17 15:59:07,156 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2023-11-17 15:59:07,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1371 conditions, 579 events. 347/579 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2058 event pairs, 234 based on Foata normal form. 1/535 useless extension candidates. Maximal degree in co-relation 1322. Up to 292 conditions per place. [2023-11-17 15:59:07,161 INFO L140 encePairwiseOnDemand]: 604/608 looper letters, 30 selfloop transitions, 3 changer transitions 28/61 dead transitions. [2023-11-17 15:59:07,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 61 transitions, 322 flow [2023-11-17 15:59:07,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:59:07,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:59:07,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1140 transitions. [2023-11-17 15:59:07,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2023-11-17 15:59:07,165 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1140 transitions. [2023-11-17 15:59:07,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1140 transitions. [2023-11-17 15:59:07,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:07,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1140 transitions. [2023-11-17 15:59:07,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 0 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 15:59:07,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 608.0) internal successors, (3648), 6 states have internal predecessors, (3648), 0 states have call successors, (0), 0 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 15:59:07,174 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 608.0) internal successors, (3648), 6 states have internal predecessors, (3648), 0 states have call successors, (0), 0 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 15:59:07,174 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 105 flow. Second operand 5 states and 1140 transitions. [2023-11-17 15:59:07,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 61 transitions, 322 flow [2023-11-17 15:59:07,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 61 transitions, 321 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:59:07,179 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 127 flow [2023-11-17 15:59:07,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=608, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=127, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2023-11-17 15:59:07,180 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 13 predicate places. [2023-11-17 15:59:07,180 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 127 flow [2023-11-17 15:59:07,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 222.0) internal successors, (888), 4 states have internal predecessors, (888), 0 states have call successors, (0), 0 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 15:59:07,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:07,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:07,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:07,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:07,388 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:07,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:07,388 INFO L85 PathProgramCache]: Analyzing trace with hash 885026496, now seen corresponding path program 1 times [2023-11-17 15:59:07,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:07,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040231103] [2023-11-17 15:59:07,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:07,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:07,402 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 15:59:07,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [242234712] [2023-11-17 15:59:07,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:07,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:07,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:07,404 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:07,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 15:59:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:07,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 15:59:07,515 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:07,566 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:07,566 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:07,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:07,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:07,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040231103] [2023-11-17 15:59:07,608 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-17 15:59:07,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242234712] [2023-11-17 15:59:07,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242234712] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:07,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:59:07,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-17 15:59:07,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333970436] [2023-11-17 15:59:07,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:59:07,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:59:07,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:07,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:59:07,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-17 15:59:07,615 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 608 [2023-11-17 15:59:07,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 127 flow. Second operand has 5 states, 5 states have (on average 216.2) internal successors, (1081), 5 states have internal predecessors, (1081), 0 states have call successors, (0), 0 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 15:59:07,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:07,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 608 [2023-11-17 15:59:07,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:07,732 INFO L124 PetriNetUnfolderBase]: 204/347 cut-off events. [2023-11-17 15:59:07,732 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2023-11-17 15:59:07,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 829 conditions, 347 events. 204/347 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 938 event pairs, 69 based on Foata normal form. 20/339 useless extension candidates. Maximal degree in co-relation 816. Up to 178 conditions per place. [2023-11-17 15:59:07,734 INFO L140 encePairwiseOnDemand]: 599/608 looper letters, 38 selfloop transitions, 9 changer transitions 0/47 dead transitions. [2023-11-17 15:59:07,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 47 transitions, 263 flow [2023-11-17 15:59:07,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:59:07,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:59:07,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1103 transitions. [2023-11-17 15:59:07,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36282894736842103 [2023-11-17 15:59:07,738 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1103 transitions. [2023-11-17 15:59:07,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1103 transitions. [2023-11-17 15:59:07,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:07,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1103 transitions. [2023-11-17 15:59:07,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 220.6) internal successors, (1103), 5 states have internal predecessors, (1103), 0 states have call successors, (0), 0 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 15:59:07,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 608.0) internal successors, (3648), 6 states have internal predecessors, (3648), 0 states have call successors, (0), 0 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 15:59:07,747 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 608.0) internal successors, (3648), 6 states have internal predecessors, (3648), 0 states have call successors, (0), 0 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 15:59:07,747 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 127 flow. Second operand 5 states and 1103 transitions. [2023-11-17 15:59:07,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 47 transitions, 263 flow [2023-11-17 15:59:07,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 47 transitions, 248 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-17 15:59:07,750 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 181 flow [2023-11-17 15:59:07,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=608, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=181, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2023-11-17 15:59:07,750 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 16 predicate places. [2023-11-17 15:59:07,750 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 181 flow [2023-11-17 15:59:07,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 216.2) internal successors, (1081), 5 states have internal predecessors, (1081), 0 states have call successors, (0), 0 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 15:59:07,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:07,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:07,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:07,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:07,965 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:07,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:07,965 INFO L85 PathProgramCache]: Analyzing trace with hash 2086727846, now seen corresponding path program 1 times [2023-11-17 15:59:07,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:07,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882239843] [2023-11-17 15:59:07,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:07,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:07,980 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 15:59:07,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [29955941] [2023-11-17 15:59:07,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:07,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:07,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:07,981 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:08,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 15:59:08,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:08,133 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-17 15:59:08,134 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:08,238 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 15:59:08,239 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-17 15:59:08,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:08,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882239843] [2023-11-17 15:59:08,239 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-17 15:59:08,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29955941] [2023-11-17 15:59:08,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29955941] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:59:08,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:59:08,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:59:08,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675889154] [2023-11-17 15:59:08,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:59:08,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:59:08,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:08,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:59:08,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:59:08,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 608 [2023-11-17 15:59:08,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 181 flow. Second operand has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 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 15:59:08,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:08,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 608 [2023-11-17 15:59:08,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:08,470 INFO L124 PetriNetUnfolderBase]: 204/348 cut-off events. [2023-11-17 15:59:08,470 INFO L125 PetriNetUnfolderBase]: For 126/126 co-relation queries the response was YES. [2023-11-17 15:59:08,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 997 conditions, 348 events. 204/348 cut-off events. For 126/126 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 928 event pairs, 141 based on Foata normal form. 1/322 useless extension candidates. Maximal degree in co-relation 937. Up to 342 conditions per place. [2023-11-17 15:59:08,472 INFO L140 encePairwiseOnDemand]: 601/608 looper letters, 33 selfloop transitions, 2 changer transitions 6/41 dead transitions. [2023-11-17 15:59:08,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 41 transitions, 273 flow [2023-11-17 15:59:08,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:59:08,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:59:08,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1443 transitions. [2023-11-17 15:59:08,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33905075187969924 [2023-11-17 15:59:08,477 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1443 transitions. [2023-11-17 15:59:08,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1443 transitions. [2023-11-17 15:59:08,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:08,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1443 transitions. [2023-11-17 15:59:08,480 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 206.14285714285714) internal successors, (1443), 7 states have internal predecessors, (1443), 0 states have call successors, (0), 0 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 15:59:08,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 608.0) internal successors, (4864), 8 states have internal predecessors, (4864), 0 states have call successors, (0), 0 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 15:59:08,486 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 608.0) internal successors, (4864), 8 states have internal predecessors, (4864), 0 states have call successors, (0), 0 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 15:59:08,486 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 181 flow. Second operand 7 states and 1443 transitions. [2023-11-17 15:59:08,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 41 transitions, 273 flow [2023-11-17 15:59:08,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 41 transitions, 269 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:59:08,489 INFO L231 Difference]: Finished difference. Result has 51 places, 35 transitions, 164 flow [2023-11-17 15:59:08,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=608, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=164, PETRI_PLACES=51, PETRI_TRANSITIONS=35} [2023-11-17 15:59:08,490 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 23 predicate places. [2023-11-17 15:59:08,490 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 35 transitions, 164 flow [2023-11-17 15:59:08,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 0 states have call successors, (0), 0 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 15:59:08,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:08,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:08,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:08,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:08,698 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:08,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:08,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1451797075, now seen corresponding path program 1 times [2023-11-17 15:59:08,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:08,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952117766] [2023-11-17 15:59:08,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:08,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:08,726 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 15:59:08,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1329618710] [2023-11-17 15:59:08,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:08,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:08,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:08,728 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:08,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-17 15:59:08,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:08,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 15:59:08,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:08,886 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 15:59:08,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:08,909 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-17 15:59:08,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:08,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952117766] [2023-11-17 15:59:08,910 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-17 15:59:08,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329618710] [2023-11-17 15:59:08,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329618710] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:08,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:59:08,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-17 15:59:08,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094811766] [2023-11-17 15:59:08,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:59:08,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:59:08,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:08,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:59:08,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-17 15:59:08,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 222 out of 608 [2023-11-17 15:59:08,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 35 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 226.8) internal successors, (1134), 5 states have internal predecessors, (1134), 0 states have call successors, (0), 0 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 15:59:08,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:08,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 222 of 608 [2023-11-17 15:59:08,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:09,009 INFO L124 PetriNetUnfolderBase]: 174/313 cut-off events. [2023-11-17 15:59:09,009 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2023-11-17 15:59:09,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 867 conditions, 313 events. 174/313 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 887 event pairs, 117 based on Foata normal form. 1/290 useless extension candidates. Maximal degree in co-relation 843. Up to 293 conditions per place. [2023-11-17 15:59:09,011 INFO L140 encePairwiseOnDemand]: 603/608 looper letters, 31 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2023-11-17 15:59:09,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 36 transitions, 238 flow [2023-11-17 15:59:09,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:59:09,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:59:09,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1140 transitions. [2023-11-17 15:59:09,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2023-11-17 15:59:09,015 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1140 transitions. [2023-11-17 15:59:09,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1140 transitions. [2023-11-17 15:59:09,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:09,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1140 transitions. [2023-11-17 15:59:09,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 0 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 15:59:09,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 608.0) internal successors, (3648), 6 states have internal predecessors, (3648), 0 states have call successors, (0), 0 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 15:59:09,022 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 608.0) internal successors, (3648), 6 states have internal predecessors, (3648), 0 states have call successors, (0), 0 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 15:59:09,022 INFO L175 Difference]: Start difference. First operand has 51 places, 35 transitions, 164 flow. Second operand 5 states and 1140 transitions. [2023-11-17 15:59:09,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 36 transitions, 238 flow [2023-11-17 15:59:09,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 36 transitions, 218 flow, removed 7 selfloop flow, removed 6 redundant places. [2023-11-17 15:59:09,024 INFO L231 Difference]: Finished difference. Result has 46 places, 36 transitions, 162 flow [2023-11-17 15:59:09,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=608, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=46, PETRI_TRANSITIONS=36} [2023-11-17 15:59:09,025 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 18 predicate places. [2023-11-17 15:59:09,025 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 36 transitions, 162 flow [2023-11-17 15:59:09,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 226.8) internal successors, (1134), 5 states have internal predecessors, (1134), 0 states have call successors, (0), 0 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 15:59:09,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:09,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:09,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:09,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:09,235 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:09,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:09,236 INFO L85 PathProgramCache]: Analyzing trace with hash 784583526, now seen corresponding path program 1 times [2023-11-17 15:59:09,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:09,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864554363] [2023-11-17 15:59:09,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:09,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:09,254 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 15:59:09,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1768094538] [2023-11-17 15:59:09,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:09,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:09,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:09,255 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:09,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-17 15:59:09,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:09,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 15:59:09,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:09,424 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-17 15:59:09,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:09,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-17 15:59:09,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:09,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864554363] [2023-11-17 15:59:09,457 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-17 15:59:09,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768094538] [2023-11-17 15:59:09,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768094538] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:09,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-17 15:59:09,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-17 15:59:09,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673707112] [2023-11-17 15:59:09,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:59:09,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:59:09,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:09,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:59:09,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-17 15:59:09,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 608 [2023-11-17 15:59:09,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 36 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 221.0) internal successors, (1105), 5 states have internal predecessors, (1105), 0 states have call successors, (0), 0 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 15:59:09,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:09,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 608 [2023-11-17 15:59:09,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:09,552 INFO L124 PetriNetUnfolderBase]: 210/367 cut-off events. [2023-11-17 15:59:09,552 INFO L125 PetriNetUnfolderBase]: For 262/262 co-relation queries the response was YES. [2023-11-17 15:59:09,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1016 conditions, 367 events. 210/367 cut-off events. For 262/262 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1111 event pairs, 83 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 989. Up to 214 conditions per place. [2023-11-17 15:59:09,554 INFO L140 encePairwiseOnDemand]: 602/608 looper letters, 43 selfloop transitions, 5 changer transitions 0/49 dead transitions. [2023-11-17 15:59:09,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 321 flow [2023-11-17 15:59:09,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:59:09,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:59:09,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1119 transitions. [2023-11-17 15:59:09,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3680921052631579 [2023-11-17 15:59:09,558 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1119 transitions. [2023-11-17 15:59:09,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1119 transitions. [2023-11-17 15:59:09,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:09,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1119 transitions. [2023-11-17 15:59:09,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 223.8) internal successors, (1119), 5 states have internal predecessors, (1119), 0 states have call successors, (0), 0 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 15:59:09,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 608.0) internal successors, (3648), 6 states have internal predecessors, (3648), 0 states have call successors, (0), 0 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 15:59:09,565 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 608.0) internal successors, (3648), 6 states have internal predecessors, (3648), 0 states have call successors, (0), 0 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 15:59:09,565 INFO L175 Difference]: Start difference. First operand has 46 places, 36 transitions, 162 flow. Second operand 5 states and 1119 transitions. [2023-11-17 15:59:09,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 321 flow [2023-11-17 15:59:09,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 49 transitions, 316 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 15:59:09,567 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 180 flow [2023-11-17 15:59:09,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=608, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=180, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2023-11-17 15:59:09,568 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 22 predicate places. [2023-11-17 15:59:09,568 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 180 flow [2023-11-17 15:59:09,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 221.0) internal successors, (1105), 5 states have internal predecessors, (1105), 0 states have call successors, (0), 0 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 15:59:09,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:09,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:09,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:09,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:09,778 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:09,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:09,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1881208423, now seen corresponding path program 1 times [2023-11-17 15:59:09,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:09,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189608043] [2023-11-17 15:59:09,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:09,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:09,794 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-17 15:59:09,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1386297799] [2023-11-17 15:59:09,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:09,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:09,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:09,796 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:09,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-17 15:59:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:10,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 83 conjunts are in the unsatisfiable core [2023-11-17 15:59:10,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:10,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-17 15:59:10,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-17 15:59:10,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-17 15:59:10,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-17 15:59:10,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:59:10,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-17 15:59:10,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-17 15:59:10,173 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-17 15:59:10,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-11-17 15:59:10,242 INFO L349 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2023-11-17 15:59:10,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 22 treesize of output 33 [2023-11-17 15:59:10,332 INFO L349 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2023-11-17 15:59:10,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 21 treesize of output 25 [2023-11-17 15:59:10,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-17 15:59:10,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-17 15:59:10,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:59:10,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-11-17 15:59:10,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:59:10,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-17 15:59:10,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:59:10,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-11-17 15:59:10,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-17 15:59:10,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-17 15:59:11,208 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-17 15:59:11,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 63 [2023-11-17 15:59:11,226 INFO L349 Elim1Store]: treesize reduction 33, result has 17.5 percent of original size [2023-11-17 15:59:11,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 22 [2023-11-17 15:59:11,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 11 [2023-11-17 15:59:11,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-17 15:59:11,325 INFO L349 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2023-11-17 15:59:11,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 31 treesize of output 29 [2023-11-17 15:59:11,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 31 [2023-11-17 15:59:11,533 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 15:59:11,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:13,511 INFO L349 Elim1Store]: treesize reduction 148, result has 62.3 percent of original size [2023-11-17 15:59:13,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 1104 treesize of output 1002 [2023-11-17 15:59:13,593 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:59:13,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 726 treesize of output 776 [2023-11-17 15:59:13,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 4 [2023-11-17 15:59:17,165 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-17 15:59:17,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 15 [2023-11-17 15:59:17,213 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-17 15:59:17,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 15 [2023-11-17 15:59:17,254 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-17 15:59:17,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 15 [2023-11-17 15:59:17,348 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-11-17 15:59:17,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 15 [2023-11-17 15:59:17,496 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:59:17,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 78 [2023-11-17 15:59:17,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 63 [2023-11-17 15:59:17,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 48 [2023-11-17 15:59:17,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 4 [2023-11-17 15:59:17,800 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 15:59:17,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 700 treesize of output 603 [2023-11-17 16:00:46,968 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:00:46,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 5186 treesize of output 4275 [2023-11-17 16:00:47,084 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:00:47,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 4262 treesize of output 3231 [2023-11-17 16:01:17,846 WARN L293 SmtUtils]: Spent 29.71s on a formula simplification that was a NOOP. DAG size: 723 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-17 16:01:17,847 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:01:17,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 19 select indices, 19 select index equivalence classes, 0 disjoint index pairs (out of 171 index pairs), introduced 19 new quantified variables, introduced 171 case distinctions, treesize of input 592368 treesize of output 557312 [2023-11-17 16:01:24,043 WARN L293 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 7945 DAG size of output: 3212 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-17 16:06:43,824 WARN L293 SmtUtils]: Spent 5.25m on a formula simplification that was a NOOP. DAG size: 1569 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-11-17 16:06:43,824 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:06:43,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 28 select indices, 28 select index equivalence classes, 0 disjoint index pairs (out of 378 index pairs), introduced 28 new quantified variables, introduced 378 case distinctions, treesize of input 4575250 treesize of output 4339718 [2023-11-17 16:07:19,530 WARN L293 SmtUtils]: Spent 35.61s on a formula simplification. DAG size of input: 26120 DAG size of output: 5716 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-17 16:07:27,178 WARN L293 SmtUtils]: Spent 7.51s on a formula simplification that was a NOOP. DAG size: 5713 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-17 16:07:27,468 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26697 treesize of output 26649 [2023-11-17 16:07:34,974 WARN L293 SmtUtils]: Spent 7.49s on a formula simplification that was a NOOP. DAG size: 5712 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-17 16:07:35,621 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:07:35,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26649 treesize of output 26644 [2023-11-17 16:07:43,012 WARN L293 SmtUtils]: Spent 7.37s on a formula simplification that was a NOOP. DAG size: 5714 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-17 16:07:43,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26635 treesize of output 26539 [2023-11-17 16:07:50,369 WARN L293 SmtUtils]: Spent 7.12s on a formula simplification that was a NOOP. DAG size: 5713 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-17 16:07:53,268 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:07:53,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26539 treesize of output 26496 [2023-11-17 16:08:00,540 WARN L293 SmtUtils]: Spent 7.26s on a formula simplification that was a NOOP. DAG size: 5715 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-17 16:08:00,542 INFO L209 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-11-17 16:08:01,750 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-17 16:08:01,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26487 treesize of output 26468 Received shutdown request... [2023-11-17 16:08:03,081 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-17 16:08:03,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-17 16:08:03,095 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 16:08:03,096 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 16:08:03,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-17 16:08:03,296 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-554-28-11-2-3-3-4-3-3-2-3-2-3-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-554-28-11-2-3-3-4-3-3-2-3-2-3-2-2-1 context. [2023-11-17 16:08:03,298 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-17 16:08:03,298 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-17 16:08:03,298 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:08:03,301 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 16:08:03,302 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 16:08:03,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 04:08:03 BasicIcfg [2023-11-17 16:08:03,307 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 16:08:03,308 INFO L158 Benchmark]: Toolchain (without parser) took 563238.27ms. Allocated memory was 313.5MB in the beginning and 1.3GB in the end (delta: 1.0GB). Free memory was 258.2MB in the beginning and 744.2MB in the end (delta: -486.1MB). Peak memory consumption was 801.3MB. Max. memory is 8.0GB. [2023-11-17 16:08:03,308 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 201.3MB. Free memory was 154.6MB in the beginning and 154.5MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 16:08:03,308 INFO L158 Benchmark]: CACSL2BoogieTranslator took 212.43ms. Allocated memory is still 313.5MB. Free memory was 257.9MB in the beginning and 246.0MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-11-17 16:08:03,308 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.29ms. Allocated memory is still 313.5MB. Free memory was 246.0MB in the beginning and 243.6MB in the end (delta: 2.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 16:08:03,309 INFO L158 Benchmark]: Boogie Preprocessor took 30.57ms. Allocated memory is still 313.5MB. Free memory was 243.6MB in the beginning and 241.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 16:08:03,309 INFO L158 Benchmark]: RCFGBuilder took 658.66ms. Allocated memory is still 313.5MB. Free memory was 241.5MB in the beginning and 276.8MB in the end (delta: -35.3MB). Peak memory consumption was 26.4MB. Max. memory is 8.0GB. [2023-11-17 16:08:03,310 INFO L158 Benchmark]: TraceAbstraction took 562290.40ms. Allocated memory was 313.5MB in the beginning and 1.3GB in the end (delta: 1.0GB). Free memory was 276.3MB in the beginning and 744.2MB in the end (delta: -468.0MB). Peak memory consumption was 819.0MB. Max. memory is 8.0GB. [2023-11-17 16:08:03,311 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 201.3MB. Free memory was 154.6MB in the beginning and 154.5MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 212.43ms. Allocated memory is still 313.5MB. Free memory was 257.9MB in the beginning and 246.0MB in the end (delta: 11.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 41.29ms. Allocated memory is still 313.5MB. Free memory was 246.0MB in the beginning and 243.6MB in the end (delta: 2.4MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.57ms. Allocated memory is still 313.5MB. Free memory was 243.6MB in the beginning and 241.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 658.66ms. Allocated memory is still 313.5MB. Free memory was 241.5MB in the beginning and 276.8MB in the end (delta: -35.3MB). Peak memory consumption was 26.4MB. Max. memory is 8.0GB. * TraceAbstraction took 562290.40ms. Allocated memory was 313.5MB in the beginning and 1.3GB in the end (delta: 1.0GB). Free memory was 276.3MB in the beginning and 744.2MB in the end (delta: -468.0MB). Peak memory consumption was 819.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 24.1s, 261 PlacesBefore, 28 PlacesAfterwards, 280 TransitionsBefore, 28 TransitionsAfterwards, 1212 CoEnabledTransitionPairs, 8 FixpointIterations, 208 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 56 TrivialYvCompositions, 6 ConcurrentYvCompositions, 19 ChoiceCompositions, 317 TotalNumberOfCompositions, 1678 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1261, independent: 1186, independent conditional: 0, independent unconditional: 1186, dependent: 68, dependent conditional: 0, dependent unconditional: 68, unknown: 7, unknown conditional: 0, unknown unconditional: 7] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 821, independent: 796, independent conditional: 0, independent unconditional: 796, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 821, independent: 796, independent conditional: 0, independent unconditional: 796, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 25, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 2, unknown conditional: 0, unknown unconditional: 2] , SemanticIndependenceRelation.Query Time [ms]: [ total: 4412, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 115, dependent conditional: 0, dependent unconditional: 115, unknown: 4297, unknown conditional: 0, unknown unconditional: 4297] ], Cache Queries: [ total: 1261, independent: 390, independent conditional: 0, independent unconditional: 390, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 826, unknown conditional: 0, unknown unconditional: 826] , Statistics on independence cache: Total cache size (in pairs): 64, Positive cache size: 58, Positive conditional cache size: 0, Positive unconditional cache size: 58, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 1, Unknown conditional cache size: 0, Unknown unconditional cache size: 1 - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-554-28-11-2-3-3-4-3-3-2-3-2-3-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-554-28-11-2-3-3-4-3-3-2-3-2-3-2-2-1 context. - TimeoutResultAtElement [Line: 85]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-554-28-11-2-3-3-4-3-3-2-3-2-3-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-554-28-11-2-3-3-4-3-3-2-3-2-3-2-2-1 context. - TimeoutResultAtElement [Line: 86]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was analyzing trace of length 29 with TraceHistMax 1,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∨-554-28-11-2-3-3-4-3-3-2-3-2-3-2-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-554-28-11-2-3-3-4-3-3-2-3-2-3-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 302 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 562.2s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 24.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 181 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 181 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 608 IncrementalHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 1 mSDtfsCounter, 608 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 237 GetRequests, 197 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=181occurred in iteration=4, InterpolantAutomatonStates: 38, 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: 0.2s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 229 ConstructedInterpolants, 1 QuantifiedInterpolants, 546 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1971 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 11 InterpolantComputations, 6 PerfectInterpolantSequences, 31/36 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown