/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:17:41,090 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:17:41,142 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 15:17:41,157 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:17:41,158 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:17:41,158 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:17:41,158 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:17:41,158 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:17:41,159 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:17:41,159 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:17:41,159 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:17:41,159 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:17:41,160 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:17:41,160 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:17:41,160 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:17:41,160 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:17:41,161 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:17:41,161 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:17:41,161 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:17:41,161 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:17:41,161 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:17:41,167 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:17:41,167 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:17:41,168 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:17:41,170 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:17:41,170 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:17:41,171 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:17:41,171 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:17:41,172 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:17:41,172 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:17:41,173 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:17:41,173 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:17:41,173 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:17:41,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:17:41,374 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:17:41,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:17:41,377 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:17:41,377 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:17:41,378 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.i [2023-11-17 15:17:42,414 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:17:42,570 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:17:42,574 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.i [2023-11-17 15:17:42,590 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96d13adaa/74e8db1c48374fc99239bdb1d8175292/FLAG9c3cb61b1 [2023-11-17 15:17:42,602 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96d13adaa/74e8db1c48374fc99239bdb1d8175292 [2023-11-17 15:17:42,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:17:42,605 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:17:42,606 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:17:42,606 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:17:42,609 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:17:42,609 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:17:42" (1/1) ... [2023-11-17 15:17:42,610 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@182edc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:42, skipping insertion in model container [2023-11-17 15:17:42,610 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:17:42" (1/1) ... [2023-11-17 15:17:42,641 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:17:42,746 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.i[945,958] [2023-11-17 15:17:42,836 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:17:42,856 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:17:42,864 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.i[945,958] [2023-11-17 15:17:42,892 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:17:42,911 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:17:42,911 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 15:17:42,918 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:17:42,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:42 WrapperNode [2023-11-17 15:17:42,920 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:17:42,921 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:17:42,921 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:17:42,921 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:17:42,926 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:42" (1/1) ... [2023-11-17 15:17:42,951 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:42" (1/1) ... [2023-11-17 15:17:42,971 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2023-11-17 15:17:42,972 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:17:42,972 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:17:42,972 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:17:42,973 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:17:42,978 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:42" (1/1) ... [2023-11-17 15:17:42,978 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:42" (1/1) ... [2023-11-17 15:17:42,992 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:42" (1/1) ... [2023-11-17 15:17:42,993 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:42" (1/1) ... [2023-11-17 15:17:42,996 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:42" (1/1) ... [2023-11-17 15:17:42,997 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:42" (1/1) ... [2023-11-17 15:17:42,998 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:42" (1/1) ... [2023-11-17 15:17:42,999 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:42" (1/1) ... [2023-11-17 15:17:43,001 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:17:43,001 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:17:43,001 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:17:43,001 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:17:43,002 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:42" (1/1) ... [2023-11-17 15:17:43,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:17:43,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:17:43,033 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 15:17:43,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 15:17:43,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:17:43,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 15:17:43,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:17:43,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:17:43,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:17:43,060 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-17 15:17:43,060 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-17 15:17:43,060 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-17 15:17:43,061 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-17 15:17:43,061 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-17 15:17:43,061 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-17 15:17:43,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:17:43,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 15:17:43,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:17:43,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:17:43,063 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 15:17:43,196 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:17:43,198 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:17:43,357 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:17:43,365 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:17:43,367 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 15:17:43,368 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:17:43 BoogieIcfgContainer [2023-11-17 15:17:43,368 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:17:43,369 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:17:43,369 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:17:43,371 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:17:43,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:17:42" (1/3) ... [2023-11-17 15:17:43,372 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3cf5bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:17:43, skipping insertion in model container [2023-11-17 15:17:43,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:17:42" (2/3) ... [2023-11-17 15:17:43,372 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b3cf5bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:17:43, skipping insertion in model container [2023-11-17 15:17:43,372 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:17:43" (3/3) ... [2023-11-17 15:17:43,373 INFO L112 eAbstractionObserver]: Analyzing ICFG safe004_tso.i [2023-11-17 15:17:43,385 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:17:43,385 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:17:43,385 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:17:43,442 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 15:17:43,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 91 transitions, 194 flow [2023-11-17 15:17:43,518 INFO L124 PetriNetUnfolderBase]: 2/88 cut-off events. [2023-11-17 15:17:43,518 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:17:43,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2023-11-17 15:17:43,522 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 91 transitions, 194 flow [2023-11-17 15:17:43,525 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 73 transitions, 155 flow [2023-11-17 15:17:43,527 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:17:43,535 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 73 transitions, 155 flow [2023-11-17 15:17:43,537 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 73 transitions, 155 flow [2023-11-17 15:17:43,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 73 transitions, 155 flow [2023-11-17 15:17:43,550 INFO L124 PetriNetUnfolderBase]: 1/73 cut-off events. [2023-11-17 15:17:43,550 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:17:43,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 73 events. 1/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2023-11-17 15:17:43,551 INFO L119 LiptonReduction]: Number of co-enabled transitions 1344 [2023-11-17 15:17:45,127 INFO L134 LiptonReduction]: Checked pairs total: 2023 [2023-11-17 15:17:45,127 INFO L136 LiptonReduction]: Total number of compositions: 59 [2023-11-17 15:17:45,138 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:17:45,143 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;@6c7e6600, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:17:45,143 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-17 15:17:45,146 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:17:45,146 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-17 15:17:45,146 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:17:45,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:45,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:45,147 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:17:45,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:45,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1736716117, now seen corresponding path program 1 times [2023-11-17 15:17:45,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:45,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527020693] [2023-11-17 15:17:45,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:45,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:45,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:17:45,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:45,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527020693] [2023-11-17 15:17:45,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527020693] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:45,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:45,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 15:17:45,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215410138] [2023-11-17 15:17:45,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:45,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:17:45,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:45,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:17:45,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:17:45,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 150 [2023-11-17 15:17:45,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:45,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:45,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 150 [2023-11-17 15:17:45,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:45,619 INFO L124 PetriNetUnfolderBase]: 522/834 cut-off events. [2023-11-17 15:17:45,619 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-11-17 15:17:45,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1723 conditions, 834 events. 522/834 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3534 event pairs, 281 based on Foata normal form. 61/895 useless extension candidates. Maximal degree in co-relation 1712. Up to 589 conditions per place. [2023-11-17 15:17:45,625 INFO L140 encePairwiseOnDemand]: 142/150 looper letters, 24 selfloop transitions, 7 changer transitions 0/31 dead transitions. [2023-11-17 15:17:45,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 139 flow [2023-11-17 15:17:45,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:17:45,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:17:45,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 254 transitions. [2023-11-17 15:17:45,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5644444444444444 [2023-11-17 15:17:45,638 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 254 transitions. [2023-11-17 15:17:45,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 254 transitions. [2023-11-17 15:17:45,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:45,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 254 transitions. [2023-11-17 15:17:45,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:45,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:45,649 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:45,650 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 254 transitions. [2023-11-17 15:17:45,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 139 flow [2023-11-17 15:17:45,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 15:17:45,655 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 94 flow [2023-11-17 15:17:45,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2023-11-17 15:17:45,660 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-11-17 15:17:45,660 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 94 flow [2023-11-17 15:17:45,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.66666666666667) internal successors, (230), 3 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:45,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:45,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:45,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:17:45,661 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:17:45,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:45,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1996375757, now seen corresponding path program 1 times [2023-11-17 15:17:45,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:45,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077942230] [2023-11-17 15:17:45,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:45,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:45,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:17:45,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:45,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077942230] [2023-11-17 15:17:45,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077942230] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:45,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:45,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:17:45,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662452268] [2023-11-17 15:17:45,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:45,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:17:45,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:45,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:17:45,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:17:45,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 150 [2023-11-17 15:17:45,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:45,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:45,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 150 [2023-11-17 15:17:45,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:45,928 INFO L124 PetriNetUnfolderBase]: 437/702 cut-off events. [2023-11-17 15:17:45,928 INFO L125 PetriNetUnfolderBase]: For 392/392 co-relation queries the response was YES. [2023-11-17 15:17:45,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2044 conditions, 702 events. 437/702 cut-off events. For 392/392 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2682 event pairs, 160 based on Foata normal form. 14/716 useless extension candidates. Maximal degree in co-relation 2032. Up to 331 conditions per place. [2023-11-17 15:17:45,932 INFO L140 encePairwiseOnDemand]: 143/150 looper letters, 29 selfloop transitions, 7 changer transitions 2/38 dead transitions. [2023-11-17 15:17:45,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 224 flow [2023-11-17 15:17:45,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:17:45,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:17:45,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 329 transitions. [2023-11-17 15:17:45,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5483333333333333 [2023-11-17 15:17:45,936 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 329 transitions. [2023-11-17 15:17:45,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 329 transitions. [2023-11-17 15:17:45,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:45,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 329 transitions. [2023-11-17 15:17:45,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:45,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:45,941 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:45,941 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 94 flow. Second operand 4 states and 329 transitions. [2023-11-17 15:17:45,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 224 flow [2023-11-17 15:17:45,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 38 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 15:17:45,945 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 134 flow [2023-11-17 15:17:45,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-11-17 15:17:45,945 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-11-17 15:17:45,946 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 134 flow [2023-11-17 15:17:45,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.25) internal successors, (305), 4 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:45,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:45,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:45,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:17:45,948 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:17:45,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:45,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1309150720, now seen corresponding path program 1 times [2023-11-17 15:17:45,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:45,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406063494] [2023-11-17 15:17:45,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:45,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:46,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:17:46,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:46,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406063494] [2023-11-17 15:17:46,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406063494] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:46,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:46,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:17:46,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075034562] [2023-11-17 15:17:46,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:46,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:17:46,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:46,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:17:46,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:17:46,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 150 [2023-11-17 15:17:46,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:46,078 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 150 [2023-11-17 15:17:46,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:46,164 INFO L124 PetriNetUnfolderBase]: 428/687 cut-off events. [2023-11-17 15:17:46,164 INFO L125 PetriNetUnfolderBase]: For 474/474 co-relation queries the response was YES. [2023-11-17 15:17:46,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2159 conditions, 687 events. 428/687 cut-off events. For 474/474 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2694 event pairs, 78 based on Foata normal form. 2/689 useless extension candidates. Maximal degree in co-relation 2144. Up to 460 conditions per place. [2023-11-17 15:17:46,169 INFO L140 encePairwiseOnDemand]: 142/150 looper letters, 35 selfloop transitions, 14 changer transitions 3/52 dead transitions. [2023-11-17 15:17:46,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 52 transitions, 344 flow [2023-11-17 15:17:46,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:17:46,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:17:46,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 338 transitions. [2023-11-17 15:17:46,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5633333333333334 [2023-11-17 15:17:46,170 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 338 transitions. [2023-11-17 15:17:46,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 338 transitions. [2023-11-17 15:17:46,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:46,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 338 transitions. [2023-11-17 15:17:46,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,172 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,172 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,172 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 134 flow. Second operand 4 states and 338 transitions. [2023-11-17 15:17:46,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 52 transitions, 344 flow [2023-11-17 15:17:46,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 52 transitions, 339 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:17:46,177 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 238 flow [2023-11-17 15:17:46,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=238, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2023-11-17 15:17:46,178 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-11-17 15:17:46,178 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 238 flow [2023-11-17 15:17:46,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:46,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:46,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:17:46,179 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:17:46,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:46,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1309151154, now seen corresponding path program 1 times [2023-11-17 15:17:46,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:46,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548610452] [2023-11-17 15:17:46,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:46,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:46,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:17:46,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:46,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548610452] [2023-11-17 15:17:46,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548610452] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:46,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:46,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:17:46,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566281278] [2023-11-17 15:17:46,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:46,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:17:46,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:46,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:17:46,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:17:46,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 150 [2023-11-17 15:17:46,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 238 flow. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:46,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 150 [2023-11-17 15:17:46,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:46,365 INFO L124 PetriNetUnfolderBase]: 329/550 cut-off events. [2023-11-17 15:17:46,365 INFO L125 PetriNetUnfolderBase]: For 893/893 co-relation queries the response was YES. [2023-11-17 15:17:46,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2003 conditions, 550 events. 329/550 cut-off events. For 893/893 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2134 event pairs, 68 based on Foata normal form. 2/552 useless extension candidates. Maximal degree in co-relation 1984. Up to 386 conditions per place. [2023-11-17 15:17:46,369 INFO L140 encePairwiseOnDemand]: 142/150 looper letters, 34 selfloop transitions, 17 changer transitions 4/55 dead transitions. [2023-11-17 15:17:46,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 55 transitions, 468 flow [2023-11-17 15:17:46,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:17:46,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:17:46,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 336 transitions. [2023-11-17 15:17:46,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56 [2023-11-17 15:17:46,370 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 336 transitions. [2023-11-17 15:17:46,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 336 transitions. [2023-11-17 15:17:46,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:46,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 336 transitions. [2023-11-17 15:17:46,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,372 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,372 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 238 flow. Second operand 4 states and 336 transitions. [2023-11-17 15:17:46,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 55 transitions, 468 flow [2023-11-17 15:17:46,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 55 transitions, 468 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 15:17:46,376 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 358 flow [2023-11-17 15:17:46,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=358, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2023-11-17 15:17:46,376 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2023-11-17 15:17:46,376 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 358 flow [2023-11-17 15:17:46,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:46,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:46,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 15:17:46,377 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:17:46,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:46,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1904243000, now seen corresponding path program 1 times [2023-11-17 15:17:46,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:46,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322523899] [2023-11-17 15:17:46,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:46,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:46,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:46,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:17:46,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:46,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322523899] [2023-11-17 15:17:46,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322523899] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:46,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:46,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:17:46,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553467687] [2023-11-17 15:17:46,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:46,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:17:46,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:46,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:17:46,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:17:46,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 150 [2023-11-17 15:17:46,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 358 flow. Second operand has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:46,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 150 [2023-11-17 15:17:46,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:46,529 INFO L124 PetriNetUnfolderBase]: 325/580 cut-off events. [2023-11-17 15:17:46,530 INFO L125 PetriNetUnfolderBase]: For 2022/2022 co-relation queries the response was YES. [2023-11-17 15:17:46,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2440 conditions, 580 events. 325/580 cut-off events. For 2022/2022 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2494 event pairs, 98 based on Foata normal form. 10/590 useless extension candidates. Maximal degree in co-relation 2416. Up to 252 conditions per place. [2023-11-17 15:17:46,533 INFO L140 encePairwiseOnDemand]: 145/150 looper letters, 25 selfloop transitions, 5 changer transitions 21/55 dead transitions. [2023-11-17 15:17:46,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 55 transitions, 570 flow [2023-11-17 15:17:46,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:17:46,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:17:46,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 348 transitions. [2023-11-17 15:17:46,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.58 [2023-11-17 15:17:46,535 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 348 transitions. [2023-11-17 15:17:46,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 348 transitions. [2023-11-17 15:17:46,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:46,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 348 transitions. [2023-11-17 15:17:46,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 87.0) internal successors, (348), 4 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,537 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,537 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 358 flow. Second operand 4 states and 348 transitions. [2023-11-17 15:17:46,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 55 transitions, 570 flow [2023-11-17 15:17:46,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 55 transitions, 570 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 15:17:46,541 INFO L231 Difference]: Finished difference. Result has 47 places, 26 transitions, 238 flow [2023-11-17 15:17:46,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=238, PETRI_PLACES=47, PETRI_TRANSITIONS=26} [2023-11-17 15:17:46,542 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 20 predicate places. [2023-11-17 15:17:46,542 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 26 transitions, 238 flow [2023-11-17 15:17:46,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:46,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:46,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:17:46,543 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:17:46,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:46,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1618541576, now seen corresponding path program 2 times [2023-11-17 15:17:46,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:46,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118043397] [2023-11-17 15:17:46,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:46,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:46,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:46,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:17:46,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:46,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118043397] [2023-11-17 15:17:46,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118043397] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:46,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:46,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:17:46,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193278459] [2023-11-17 15:17:46,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:46,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:17:46,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:46,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:17:46,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:17:46,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 150 [2023-11-17 15:17:46,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 26 transitions, 238 flow. Second operand has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:46,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 150 [2023-11-17 15:17:46,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:46,670 INFO L124 PetriNetUnfolderBase]: 146/293 cut-off events. [2023-11-17 15:17:46,670 INFO L125 PetriNetUnfolderBase]: For 1030/1030 co-relation queries the response was YES. [2023-11-17 15:17:46,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1175 conditions, 293 events. 146/293 cut-off events. For 1030/1030 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1104 event pairs, 29 based on Foata normal form. 6/299 useless extension candidates. Maximal degree in co-relation 1148. Up to 78 conditions per place. [2023-11-17 15:17:46,672 INFO L140 encePairwiseOnDemand]: 146/150 looper letters, 18 selfloop transitions, 1 changer transitions 22/42 dead transitions. [2023-11-17 15:17:46,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 42 transitions, 360 flow [2023-11-17 15:17:46,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:17:46,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:17:46,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 425 transitions. [2023-11-17 15:17:46,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2023-11-17 15:17:46,673 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 425 transitions. [2023-11-17 15:17:46,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 425 transitions. [2023-11-17 15:17:46,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:46,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 425 transitions. [2023-11-17 15:17:46,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 85.0) internal successors, (425), 5 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,676 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,676 INFO L175 Difference]: Start difference. First operand has 47 places, 26 transitions, 238 flow. Second operand 5 states and 425 transitions. [2023-11-17 15:17:46,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 42 transitions, 360 flow [2023-11-17 15:17:46,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 42 transitions, 307 flow, removed 5 selfloop flow, removed 7 redundant places. [2023-11-17 15:17:46,679 INFO L231 Difference]: Finished difference. Result has 46 places, 17 transitions, 111 flow [2023-11-17 15:17:46,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=111, PETRI_PLACES=46, PETRI_TRANSITIONS=17} [2023-11-17 15:17:46,681 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 19 predicate places. [2023-11-17 15:17:46,681 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 17 transitions, 111 flow [2023-11-17 15:17:46,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.0) internal successors, (324), 4 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:46,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:46,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:17:46,682 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:17:46,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:46,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1397985889, now seen corresponding path program 1 times [2023-11-17 15:17:46,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:46,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749771986] [2023-11-17 15:17:46,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:46,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:46,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:46,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:17:46,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:46,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749771986] [2023-11-17 15:17:46,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749771986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:46,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:46,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:17:46,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377651822] [2023-11-17 15:17:46,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:46,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:17:46,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:46,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:17:46,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:17:46,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 150 [2023-11-17 15:17:46,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 17 transitions, 111 flow. Second operand has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:46,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 150 [2023-11-17 15:17:46,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:46,778 INFO L124 PetriNetUnfolderBase]: 35/84 cut-off events. [2023-11-17 15:17:46,778 INFO L125 PetriNetUnfolderBase]: For 242/242 co-relation queries the response was YES. [2023-11-17 15:17:46,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 84 events. 35/84 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 209 event pairs, 11 based on Foata normal form. 5/87 useless extension candidates. Maximal degree in co-relation 284. Up to 66 conditions per place. [2023-11-17 15:17:46,779 INFO L140 encePairwiseOnDemand]: 145/150 looper letters, 19 selfloop transitions, 3 changer transitions 1/25 dead transitions. [2023-11-17 15:17:46,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 25 transitions, 198 flow [2023-11-17 15:17:46,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:17:46,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:17:46,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2023-11-17 15:17:46,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5866666666666667 [2023-11-17 15:17:46,780 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2023-11-17 15:17:46,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2023-11-17 15:17:46,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:46,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2023-11-17 15:17:46,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,781 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,782 INFO L175 Difference]: Start difference. First operand has 46 places, 17 transitions, 111 flow. Second operand 3 states and 264 transitions. [2023-11-17 15:17:46,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 25 transitions, 198 flow [2023-11-17 15:17:46,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 25 transitions, 129 flow, removed 11 selfloop flow, removed 14 redundant places. [2023-11-17 15:17:46,783 INFO L231 Difference]: Finished difference. Result has 33 places, 19 transitions, 79 flow [2023-11-17 15:17:46,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=33, PETRI_TRANSITIONS=19} [2023-11-17 15:17:46,783 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2023-11-17 15:17:46,783 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 19 transitions, 79 flow [2023-11-17 15:17:46,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.0) internal successors, (252), 3 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:46,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:46,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 15:17:46,785 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:17:46,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:46,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1015587560, now seen corresponding path program 1 times [2023-11-17 15:17:46,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:46,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216529529] [2023-11-17 15:17:46,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:46,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:46,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:46,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:17:46,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:46,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216529529] [2023-11-17 15:17:46,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216529529] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:46,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:46,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:17:46,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643242267] [2023-11-17 15:17:46,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:46,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:17:46,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:46,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:17:46,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:17:46,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 150 [2023-11-17 15:17:46,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 19 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:46,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 150 [2023-11-17 15:17:46,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:46,874 INFO L124 PetriNetUnfolderBase]: 17/52 cut-off events. [2023-11-17 15:17:46,874 INFO L125 PetriNetUnfolderBase]: For 25/29 co-relation queries the response was YES. [2023-11-17 15:17:46,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175 conditions, 52 events. 17/52 cut-off events. For 25/29 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 96 event pairs, 3 based on Foata normal form. 7/57 useless extension candidates. Maximal degree in co-relation 161. Up to 27 conditions per place. [2023-11-17 15:17:46,875 INFO L140 encePairwiseOnDemand]: 145/150 looper letters, 18 selfloop transitions, 5 changer transitions 3/28 dead transitions. [2023-11-17 15:17:46,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 28 transitions, 168 flow [2023-11-17 15:17:46,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:17:46,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:17:46,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 347 transitions. [2023-11-17 15:17:46,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5783333333333334 [2023-11-17 15:17:46,876 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 347 transitions. [2023-11-17 15:17:46,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 347 transitions. [2023-11-17 15:17:46,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:46,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 347 transitions. [2023-11-17 15:17:46,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.75) internal successors, (347), 4 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,880 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 150.0) internal successors, (750), 5 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,880 INFO L175 Difference]: Start difference. First operand has 33 places, 19 transitions, 79 flow. Second operand 4 states and 347 transitions. [2023-11-17 15:17:46,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 28 transitions, 168 flow [2023-11-17 15:17:46,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 157 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-17 15:17:46,881 INFO L231 Difference]: Finished difference. Result has 34 places, 19 transitions, 89 flow [2023-11-17 15:17:46,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=89, PETRI_PLACES=34, PETRI_TRANSITIONS=19} [2023-11-17 15:17:46,883 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-11-17 15:17:46,883 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 19 transitions, 89 flow [2023-11-17 15:17:46,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:17:46,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:46,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 15:17:46,884 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-17 15:17:46,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:17:46,884 INFO L85 PathProgramCache]: Analyzing trace with hash 647916147, now seen corresponding path program 1 times [2023-11-17 15:17:46,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:17:46,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192500212] [2023-11-17 15:17:46,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:17:46,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:17:46,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:17:46,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:17:46,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:17:46,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192500212] [2023-11-17 15:17:46,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192500212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:17:46,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:17:46,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:17:46,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243666838] [2023-11-17 15:17:46,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:17:46,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:17:46,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:17:46,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:17:46,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:17:46,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 150 [2023-11-17 15:17:46,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 19 transitions, 89 flow. Second operand has 5 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:17:46,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 150 [2023-11-17 15:17:46,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:17:46,985 INFO L124 PetriNetUnfolderBase]: 11/37 cut-off events. [2023-11-17 15:17:46,985 INFO L125 PetriNetUnfolderBase]: For 51/57 co-relation queries the response was YES. [2023-11-17 15:17:46,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137 conditions, 37 events. 11/37 cut-off events. For 51/57 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 53 event pairs, 2 based on Foata normal form. 4/40 useless extension candidates. Maximal degree in co-relation 123. Up to 15 conditions per place. [2023-11-17 15:17:46,986 INFO L140 encePairwiseOnDemand]: 145/150 looper letters, 0 selfloop transitions, 0 changer transitions 24/24 dead transitions. [2023-11-17 15:17:46,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 24 transitions, 151 flow [2023-11-17 15:17:46,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:17:46,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:17:46,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 423 transitions. [2023-11-17 15:17:46,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.564 [2023-11-17 15:17:46,987 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 423 transitions. [2023-11-17 15:17:46,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 423 transitions. [2023-11-17 15:17:46,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:17:46,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 423 transitions. [2023-11-17 15:17:46,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,989 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,989 INFO L175 Difference]: Start difference. First operand has 34 places, 19 transitions, 89 flow. Second operand 5 states and 423 transitions. [2023-11-17 15:17:46,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 24 transitions, 151 flow [2023-11-17 15:17:46,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 24 transitions, 134 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-17 15:17:46,990 INFO L231 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2023-11-17 15:17:46,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=150, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2023-11-17 15:17:46,990 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-11-17 15:17:46,991 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2023-11-17 15:17:46,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:17:46,993 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-11-17 15:17:46,993 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-11-17 15:17:46,993 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-11-17 15:17:46,993 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-11-17 15:17:46,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 15:17:46,993 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:17:46,995 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:17:46,995 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:17:46,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:17:46 BasicIcfg [2023-11-17 15:17:46,997 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:17:46,998 INFO L158 Benchmark]: Toolchain (without parser) took 4393.05ms. Allocated memory was 271.6MB in the beginning and 328.2MB in the end (delta: 56.6MB). Free memory was 218.7MB in the beginning and 126.9MB in the end (delta: 91.8MB). Peak memory consumption was 148.9MB. Max. memory is 8.0GB. [2023-11-17 15:17:46,998 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 215.0MB. Free memory was 163.9MB in the beginning and 163.8MB in the end (delta: 129.4kB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:17:46,998 INFO L158 Benchmark]: CACSL2BoogieTranslator took 314.85ms. Allocated memory is still 271.6MB. Free memory was 218.7MB in the beginning and 198.3MB in the end (delta: 20.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-17 15:17:46,998 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.36ms. Allocated memory is still 271.6MB. Free memory was 198.3MB in the beginning and 196.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:17:46,998 INFO L158 Benchmark]: Boogie Preprocessor took 28.59ms. Allocated memory is still 271.6MB. Free memory was 196.2MB in the beginning and 194.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 15:17:46,999 INFO L158 Benchmark]: RCFGBuilder took 366.66ms. Allocated memory is still 271.6MB. Free memory was 194.6MB in the beginning and 181.0MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-11-17 15:17:46,999 INFO L158 Benchmark]: TraceAbstraction took 3628.19ms. Allocated memory was 271.6MB in the beginning and 328.2MB in the end (delta: 56.6MB). Free memory was 180.5MB in the beginning and 126.9MB in the end (delta: 53.5MB). Peak memory consumption was 111.2MB. Max. memory is 8.0GB. [2023-11-17 15:17:47,000 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 215.0MB. Free memory was 163.9MB in the beginning and 163.8MB in the end (delta: 129.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 314.85ms. Allocated memory is still 271.6MB. Free memory was 218.7MB in the beginning and 198.3MB in the end (delta: 20.4MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 50.36ms. Allocated memory is still 271.6MB. Free memory was 198.3MB in the beginning and 196.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.59ms. Allocated memory is still 271.6MB. Free memory was 196.2MB in the beginning and 194.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 366.66ms. Allocated memory is still 271.6MB. Free memory was 194.6MB in the beginning and 181.0MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3628.19ms. Allocated memory was 271.6MB in the beginning and 328.2MB in the end (delta: 56.6MB). Free memory was 180.5MB in the beginning and 126.9MB in the end (delta: 53.5MB). Peak memory consumption was 111.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 82 PlacesBefore, 27 PlacesAfterwards, 73 TransitionsBefore, 17 TransitionsAfterwards, 1344 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 59 TotalNumberOfCompositions, 2023 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1195, independent: 1121, independent conditional: 0, independent unconditional: 1121, dependent: 74, dependent conditional: 0, dependent unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 918, independent: 875, independent conditional: 0, independent unconditional: 875, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 918, independent: 868, independent conditional: 0, independent unconditional: 868, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 50, independent: 7, independent conditional: 0, independent unconditional: 7, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 108, independent: 19, independent conditional: 0, independent unconditional: 19, dependent: 89, dependent conditional: 0, dependent unconditional: 89, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1195, independent: 246, independent conditional: 0, independent unconditional: 246, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 918, unknown conditional: 0, unknown unconditional: 918] , Statistics on independence cache: Total cache size (in pairs): 71, Positive cache size: 58, Positive conditional cache size: 0, Positive unconditional cache size: 58, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 117 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.5s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 96 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 96 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 327 IncrementalHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 15 mSDtfsCounter, 327 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=358occurred in iteration=4, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 402 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 15:17:47,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...