/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:29:27,312 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:29:27,363 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 11:29:27,384 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:29:27,385 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:29:27,385 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:29:27,386 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:29:27,386 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:29:27,387 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:29:27,387 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:29:27,387 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:29:27,388 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:29:27,388 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:29:27,388 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:29:27,389 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:29:27,389 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:29:27,389 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:29:27,390 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:29:27,390 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:29:27,390 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:29:27,391 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:29:27,391 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:29:27,392 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:29:27,392 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:29:27,392 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:29:27,393 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:29:27,393 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:29:27,393 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:29:27,394 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:29:27,394 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:29:27,394 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:29:27,395 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:29:27,395 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:29:27,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:29:27,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:29:27,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:29:27,647 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:29:27,647 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:29:27,648 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe022_tso.i [2023-11-17 11:29:28,983 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:29:29,229 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:29:29,237 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe022_tso.i [2023-11-17 11:29:29,255 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebef18c29/c2d3e4f1ef5940debd32c3be0973dc1a/FLAG676c7c3f0 [2023-11-17 11:29:29,268 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebef18c29/c2d3e4f1ef5940debd32c3be0973dc1a [2023-11-17 11:29:29,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:29:29,272 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:29:29,277 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:29:29,277 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:29:29,283 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:29:29,283 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:29:29" (1/1) ... [2023-11-17 11:29:29,285 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@206c60b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:29, skipping insertion in model container [2023-11-17 11:29:29,286 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:29:29" (1/1) ... [2023-11-17 11:29:29,331 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:29:29,492 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/safe022_tso.i[945,958] [2023-11-17 11:29:29,657 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:29:29,668 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:29:29,681 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/safe022_tso.i[945,958] [2023-11-17 11:29:29,720 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:29:29,759 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:29:29,760 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:29:29,766 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:29:29,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:29 WrapperNode [2023-11-17 11:29:29,768 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:29:29,770 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:29:29,770 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:29:29,770 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:29:29,776 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:29" (1/1) ... [2023-11-17 11:29:29,806 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:29" (1/1) ... [2023-11-17 11:29:29,831 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 58 [2023-11-17 11:29:29,832 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:29:29,833 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:29:29,833 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:29:29,833 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:29:29,842 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:29" (1/1) ... [2023-11-17 11:29:29,842 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:29" (1/1) ... [2023-11-17 11:29:29,848 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:29" (1/1) ... [2023-11-17 11:29:29,849 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:29" (1/1) ... [2023-11-17 11:29:29,866 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:29" (1/1) ... [2023-11-17 11:29:29,867 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:29" (1/1) ... [2023-11-17 11:29:29,869 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:29" (1/1) ... [2023-11-17 11:29:29,870 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:29" (1/1) ... [2023-11-17 11:29:29,872 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:29:29,873 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:29:29,873 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:29:29,873 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:29:29,874 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:29" (1/1) ... [2023-11-17 11:29:29,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:29:29,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:29:29,911 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 11:29:29,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 11:29:29,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:29:29,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 11:29:29,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:29:29,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:29:29,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:29:29,947 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-17 11:29:29,947 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-17 11:29:29,947 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-17 11:29:29,947 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-17 11:29:29,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:29:29,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 11:29:29,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:29:29,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:29:29,949 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 11:29:30,101 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:29:30,103 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:29:30,243 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:29:30,337 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:29:30,338 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 11:29:30,339 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:29:30 BoogieIcfgContainer [2023-11-17 11:29:30,339 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:29:30,341 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:29:30,341 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:29:30,344 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:29:30,345 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:29:29" (1/3) ... [2023-11-17 11:29:30,349 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20efb7b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:29:30, skipping insertion in model container [2023-11-17 11:29:30,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:29:29" (2/3) ... [2023-11-17 11:29:30,350 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20efb7b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:29:30, skipping insertion in model container [2023-11-17 11:29:30,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:29:30" (3/3) ... [2023-11-17 11:29:30,351 INFO L112 eAbstractionObserver]: Analyzing ICFG safe022_tso.i [2023-11-17 11:29:30,370 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:29:30,370 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 11:29:30,371 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:29:30,411 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 11:29:30,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 35 places, 29 transitions, 66 flow [2023-11-17 11:29:30,476 INFO L124 PetriNetUnfolderBase]: 1/27 cut-off events. [2023-11-17 11:29:30,476 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:29:30,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 1/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2023-11-17 11:29:30,480 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 29 transitions, 66 flow [2023-11-17 11:29:30,483 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2023-11-17 11:29:30,487 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:29:30,498 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 31 places, 24 transitions, 54 flow [2023-11-17 11:29:30,501 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 31 places, 24 transitions, 54 flow [2023-11-17 11:29:30,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 31 places, 24 transitions, 54 flow [2023-11-17 11:29:30,511 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2023-11-17 11:29:30,511 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:29:30,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 24 events. 0/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-11-17 11:29:30,512 INFO L119 LiptonReduction]: Number of co-enabled transitions 288 [2023-11-17 11:29:30,935 INFO L134 LiptonReduction]: Checked pairs total: 425 [2023-11-17 11:29:30,935 INFO L136 LiptonReduction]: Total number of compositions: 12 [2023-11-17 11:29:30,961 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:29:30,967 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;@605b88e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:29:30,967 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 11:29:30,974 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:29:30,974 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-11-17 11:29:30,975 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:29:30,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:30,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-17 11:29:30,976 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:29:30,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:30,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1133659298, now seen corresponding path program 1 times [2023-11-17 11:29:30,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:30,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710961363] [2023-11-17 11:29:30,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:30,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:31,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:29:31,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:31,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710961363] [2023-11-17 11:29:31,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710961363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:31,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:31,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 11:29:31,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021479567] [2023-11-17 11:29:31,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:31,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:29:31,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:31,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:29:31,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:29:31,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2023-11-17 11:29:31,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 12 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:31,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:31,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2023-11-17 11:29:31,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:31,538 INFO L124 PetriNetUnfolderBase]: 56/109 cut-off events. [2023-11-17 11:29:31,538 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 11:29:31,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 232 conditions, 109 events. 56/109 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 280 event pairs, 17 based on Foata normal form. 4/113 useless extension candidates. Maximal degree in co-relation 222. Up to 84 conditions per place. [2023-11-17 11:29:31,542 INFO L140 encePairwiseOnDemand]: 38/41 looper letters, 14 selfloop transitions, 2 changer transitions 0/16 dead transitions. [2023-11-17 11:29:31,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 16 transitions, 70 flow [2023-11-17 11:29:31,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:29:31,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:29:31,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2023-11-17 11:29:31,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5040650406504065 [2023-11-17 11:29:31,560 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 62 transitions. [2023-11-17 11:29:31,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 62 transitions. [2023-11-17 11:29:31,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:31,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 62 transitions. [2023-11-17 11:29:31,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:31,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:31,569 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:31,571 INFO L175 Difference]: Start difference. First operand has 19 places, 12 transitions, 30 flow. Second operand 3 states and 62 transitions. [2023-11-17 11:29:31,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 16 transitions, 70 flow [2023-11-17 11:29:31,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 16 transitions, 68 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:29:31,575 INFO L231 Difference]: Finished difference. Result has 20 places, 12 transitions, 36 flow [2023-11-17 11:29:31,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=12} [2023-11-17 11:29:31,580 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 1 predicate places. [2023-11-17 11:29:31,580 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 12 transitions, 36 flow [2023-11-17 11:29:31,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:31,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:31,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:31,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:29:31,581 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:29:31,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:31,582 INFO L85 PathProgramCache]: Analyzing trace with hash 783699836, now seen corresponding path program 1 times [2023-11-17 11:29:31,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:31,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326928903] [2023-11-17 11:29:31,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:31,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:31,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:29:31,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:31,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326928903] [2023-11-17 11:29:31,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326928903] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:31,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:31,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:29:31,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777052671] [2023-11-17 11:29:31,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:31,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:29:31,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:31,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:29:31,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:29:31,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2023-11-17 11:29:31,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 12 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:31,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:31,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2023-11-17 11:29:31,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:31,838 INFO L124 PetriNetUnfolderBase]: 54/113 cut-off events. [2023-11-17 11:29:31,838 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-17 11:29:31,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 113 events. 54/113 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 356 event pairs, 19 based on Foata normal form. 12/125 useless extension candidates. Maximal degree in co-relation 252. Up to 40 conditions per place. [2023-11-17 11:29:31,841 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 14 selfloop transitions, 3 changer transitions 5/22 dead transitions. [2023-11-17 11:29:31,841 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 22 transitions, 105 flow [2023-11-17 11:29:31,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:29:31,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:29:31,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2023-11-17 11:29:31,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121951219512195 [2023-11-17 11:29:31,845 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 84 transitions. [2023-11-17 11:29:31,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 84 transitions. [2023-11-17 11:29:31,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:31,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 84 transitions. [2023-11-17 11:29:31,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:31,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:31,851 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:31,852 INFO L175 Difference]: Start difference. First operand has 20 places, 12 transitions, 36 flow. Second operand 4 states and 84 transitions. [2023-11-17 11:29:31,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 22 transitions, 105 flow [2023-11-17 11:29:31,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 22 transitions, 99 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:29:31,853 INFO L231 Difference]: Finished difference. Result has 23 places, 12 transitions, 46 flow [2023-11-17 11:29:31,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=46, PETRI_PLACES=23, PETRI_TRANSITIONS=12} [2023-11-17 11:29:31,854 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 4 predicate places. [2023-11-17 11:29:31,855 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 12 transitions, 46 flow [2023-11-17 11:29:31,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:31,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:31,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:31,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:29:31,856 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:29:31,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:31,858 INFO L85 PathProgramCache]: Analyzing trace with hash -14035632, now seen corresponding path program 1 times [2023-11-17 11:29:31,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:31,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128615966] [2023-11-17 11:29:31,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:31,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:32,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:29:32,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:32,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128615966] [2023-11-17 11:29:32,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128615966] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:32,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:32,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:29:32,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111091674] [2023-11-17 11:29:32,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:32,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:29:32,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:32,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:29:32,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:29:32,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2023-11-17 11:29:32,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 12 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:32,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:32,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2023-11-17 11:29:32,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:32,056 INFO L124 PetriNetUnfolderBase]: 16/44 cut-off events. [2023-11-17 11:29:32,056 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-11-17 11:29:32,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 44 events. 16/44 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 75 event pairs, 6 based on Foata normal form. 5/49 useless extension candidates. Maximal degree in co-relation 119. Up to 29 conditions per place. [2023-11-17 11:29:32,057 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 15 selfloop transitions, 3 changer transitions 0/18 dead transitions. [2023-11-17 11:29:32,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 18 transitions, 100 flow [2023-11-17 11:29:32,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:29:32,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:29:32,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2023-11-17 11:29:32,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5203252032520326 [2023-11-17 11:29:32,060 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 64 transitions. [2023-11-17 11:29:32,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 64 transitions. [2023-11-17 11:29:32,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:32,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 64 transitions. [2023-11-17 11:29:32,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:32,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:32,062 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 41.0) internal successors, (164), 4 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:32,062 INFO L175 Difference]: Start difference. First operand has 23 places, 12 transitions, 46 flow. Second operand 3 states and 64 transitions. [2023-11-17 11:29:32,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 18 transitions, 100 flow [2023-11-17 11:29:32,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 18 transitions, 86 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-17 11:29:32,065 INFO L231 Difference]: Finished difference. Result has 22 places, 14 transitions, 53 flow [2023-11-17 11:29:32,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=22, PETRI_TRANSITIONS=14} [2023-11-17 11:29:32,066 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2023-11-17 11:29:32,066 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 14 transitions, 53 flow [2023-11-17 11:29:32,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:32,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:32,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:32,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 11:29:32,068 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:29:32,069 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:32,069 INFO L85 PathProgramCache]: Analyzing trace with hash -359312292, now seen corresponding path program 1 times [2023-11-17 11:29:32,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:32,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125559075] [2023-11-17 11:29:32,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:32,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:32,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:29:32,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:32,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125559075] [2023-11-17 11:29:32,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125559075] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:32,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:32,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:29:32,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084912808] [2023-11-17 11:29:32,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:32,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:29:32,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:32,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:29:32,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:29:32,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 41 [2023-11-17 11:29:32,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 14 transitions, 53 flow. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:32,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:32,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 41 [2023-11-17 11:29:32,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:32,231 INFO L124 PetriNetUnfolderBase]: 9/30 cut-off events. [2023-11-17 11:29:32,232 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 11:29:32,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 30 events. 9/30 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 4 based on Foata normal form. 4/34 useless extension candidates. Maximal degree in co-relation 85. Up to 16 conditions per place. [2023-11-17 11:29:32,233 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 13 selfloop transitions, 5 changer transitions 0/18 dead transitions. [2023-11-17 11:29:32,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 18 transitions, 101 flow [2023-11-17 11:29:32,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 11:29:32,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 11:29:32,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 79 transitions. [2023-11-17 11:29:32,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4817073170731707 [2023-11-17 11:29:32,234 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 79 transitions. [2023-11-17 11:29:32,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 79 transitions. [2023-11-17 11:29:32,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:32,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 79 transitions. [2023-11-17 11:29:32,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:32,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:32,236 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 41.0) internal successors, (205), 5 states have internal predecessors, (205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:32,236 INFO L175 Difference]: Start difference. First operand has 22 places, 14 transitions, 53 flow. Second operand 4 states and 79 transitions. [2023-11-17 11:29:32,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 18 transitions, 101 flow [2023-11-17 11:29:32,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 18 transitions, 93 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 11:29:32,237 INFO L231 Difference]: Finished difference. Result has 24 places, 14 transitions, 62 flow [2023-11-17 11:29:32,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=62, PETRI_PLACES=24, PETRI_TRANSITIONS=14} [2023-11-17 11:29:32,238 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 5 predicate places. [2023-11-17 11:29:32,238 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 14 transitions, 62 flow [2023-11-17 11:29:32,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:32,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:29:32,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:29:32,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 11:29:32,239 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 11:29:32,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:29:32,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1709174701, now seen corresponding path program 1 times [2023-11-17 11:29:32,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:29:32,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389498024] [2023-11-17 11:29:32,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:29:32,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:29:32,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:29:32,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:29:32,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:29:32,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389498024] [2023-11-17 11:29:32,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389498024] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:29:32,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:29:32,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 11:29:32,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291492830] [2023-11-17 11:29:32,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:29:32,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:29:32,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:29:32,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:29:32,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:29:32,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 41 [2023-11-17 11:29:32,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 14 transitions, 62 flow. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:32,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:29:32,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 41 [2023-11-17 11:29:32,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:29:32,395 INFO L124 PetriNetUnfolderBase]: 9/29 cut-off events. [2023-11-17 11:29:32,397 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-11-17 11:29:32,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 29 events. 9/29 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 40 event pairs, 1 based on Foata normal form. 1/30 useless extension candidates. Maximal degree in co-relation 85. Up to 22 conditions per place. [2023-11-17 11:29:32,399 INFO L140 encePairwiseOnDemand]: 36/41 looper letters, 0 selfloop transitions, 0 changer transitions 16/16 dead transitions. [2023-11-17 11:29:32,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 16 transitions, 105 flow [2023-11-17 11:29:32,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:29:32,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:29:32,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2023-11-17 11:29:32,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146341463414634 [2023-11-17 11:29:32,400 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 85 transitions. [2023-11-17 11:29:32,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 85 transitions. [2023-11-17 11:29:32,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:29:32,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 85 transitions. [2023-11-17 11:29:32,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:32,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:32,404 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 41.0) internal successors, (246), 6 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:32,404 INFO L175 Difference]: Start difference. First operand has 24 places, 14 transitions, 62 flow. Second operand 5 states and 85 transitions. [2023-11-17 11:29:32,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 16 transitions, 105 flow [2023-11-17 11:29:32,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 16 transitions, 94 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-17 11:29:32,405 INFO L231 Difference]: Finished difference. Result has 25 places, 0 transitions, 0 flow [2023-11-17 11:29:32,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=25, PETRI_TRANSITIONS=0} [2023-11-17 11:29:32,408 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 6 predicate places. [2023-11-17 11:29:32,408 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 0 transitions, 0 flow [2023-11-17 11:29:32,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:29:32,412 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-17 11:29:32,413 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-17 11:29:32,414 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-17 11:29:32,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 11:29:32,415 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-17 11:29:32,418 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:29:32,418 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:29:32,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:29:32 BasicIcfg [2023-11-17 11:29:32,425 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:29:32,426 INFO L158 Benchmark]: Toolchain (without parser) took 3154.31ms. Allocated memory is still 266.3MB. Free memory was 216.1MB in the beginning and 186.7MB in the end (delta: 29.4MB). Peak memory consumption was 30.3MB. Max. memory is 8.0GB. [2023-11-17 11:29:32,426 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 186.6MB. Free memory is still 138.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:29:32,427 INFO L158 Benchmark]: CACSL2BoogieTranslator took 491.51ms. Allocated memory is still 266.3MB. Free memory was 215.7MB in the beginning and 195.8MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-17 11:29:32,427 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.54ms. Allocated memory is still 266.3MB. Free memory was 195.8MB in the beginning and 193.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:29:32,427 INFO L158 Benchmark]: Boogie Preprocessor took 39.50ms. Allocated memory is still 266.3MB. Free memory was 193.7MB in the beginning and 192.4MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 11:29:32,428 INFO L158 Benchmark]: RCFGBuilder took 466.35ms. Allocated memory is still 266.3MB. Free memory was 192.4MB in the beginning and 173.8MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-11-17 11:29:32,428 INFO L158 Benchmark]: TraceAbstraction took 2084.34ms. Allocated memory is still 266.3MB. Free memory was 173.1MB in the beginning and 186.7MB in the end (delta: -13.6MB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:29:32,429 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 186.6MB. Free memory is still 138.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 491.51ms. Allocated memory is still 266.3MB. Free memory was 215.7MB in the beginning and 195.8MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 62.54ms. Allocated memory is still 266.3MB. Free memory was 195.8MB in the beginning and 193.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 39.50ms. Allocated memory is still 266.3MB. Free memory was 193.7MB in the beginning and 192.4MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 466.35ms. Allocated memory is still 266.3MB. Free memory was 192.4MB in the beginning and 173.8MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * TraceAbstraction took 2084.34ms. Allocated memory is still 266.3MB. Free memory was 173.1MB in the beginning and 186.7MB in the end (delta: -13.6MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.4s, 31 PlacesBefore, 19 PlacesAfterwards, 24 TransitionsBefore, 12 TransitionsAfterwards, 288 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 12 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 12 TotalNumberOfCompositions, 425 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 300, independent: 267, independent conditional: 0, independent unconditional: 267, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 208, independent: 192, independent conditional: 0, independent unconditional: 192, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 208, independent: 188, independent conditional: 0, independent unconditional: 188, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 20, independent: 4, independent conditional: 0, independent unconditional: 4, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 65, independent: 20, independent conditional: 0, independent unconditional: 20, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 300, independent: 75, independent conditional: 0, independent unconditional: 75, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 208, unknown conditional: 0, unknown unconditional: 208] , Statistics on independence cache: Total cache size (in pairs): 30, Positive cache size: 23, Positive conditional cache size: 0, Positive unconditional cache size: 23, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, 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 5 procedures, 45 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.0s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 40 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 40 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 108 IncrementalHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 0 mSDtfsCounter, 108 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=4, InterpolantAutomatonStates: 19, 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, 0.7s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 159 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 11:29:32,459 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...