/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 08:15:36,248 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 08:15:36,323 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-VariableLbe.epf [2023-08-24 08:15:36,328 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 08:15:36,329 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 08:15:36,359 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 08:15:36,361 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 08:15:36,365 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 08:15:36,366 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 08:15:36,369 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 08:15:36,369 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 08:15:36,370 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 08:15:36,370 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 08:15:36,371 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 08:15:36,371 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 08:15:36,371 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 08:15:36,372 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 08:15:36,372 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 08:15:36,372 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 08:15:36,372 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 08:15:36,372 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 08:15:36,373 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 08:15:36,373 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 08:15:36,373 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 08:15:36,374 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 08:15:36,374 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 08:15:36,374 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 08:15:36,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 08:15:36,374 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 08:15:36,375 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 08:15:36,376 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 08:15:36,376 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 08:15:36,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 08:15:36,376 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 08:15:36,376 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 08:15:36,380 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 08:15:36,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 08:15:36,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 08:15:36,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 08:15:36,725 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 08:15:36,725 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 08:15:36,727 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c [2023-08-24 08:15:37,950 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 08:15:38,175 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 08:15:38,176 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c [2023-08-24 08:15:38,183 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c2a30ba5/5403c9a2c91640a9a983e909c74db369/FLAGe011f5ad7 [2023-08-24 08:15:38,202 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c2a30ba5/5403c9a2c91640a9a983e909c74db369 [2023-08-24 08:15:38,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 08:15:38,208 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 08:15:38,211 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 08:15:38,211 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 08:15:38,214 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 08:15:38,215 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 08:15:38" (1/1) ... [2023-08-24 08:15:38,216 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19ac1ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:15:38, skipping insertion in model container [2023-08-24 08:15:38,216 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 08:15:38" (1/1) ... [2023-08-24 08:15:38,236 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 08:15:38,409 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c[2410,2423] [2023-08-24 08:15:38,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 08:15:38,418 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 08:15:38,454 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c[2410,2423] [2023-08-24 08:15:38,455 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 08:15:38,461 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 08:15:38,462 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 08:15:38,467 INFO L206 MainTranslator]: Completed translation [2023-08-24 08:15:38,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:15:38 WrapperNode [2023-08-24 08:15:38,468 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 08:15:38,469 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 08:15:38,469 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 08:15:38,469 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 08:15:38,474 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:15:38" (1/1) ... [2023-08-24 08:15:38,488 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:15:38" (1/1) ... [2023-08-24 08:15:38,504 INFO L138 Inliner]: procedures = 21, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2023-08-24 08:15:38,507 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 08:15:38,508 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 08:15:38,508 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 08:15:38,508 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 08:15:38,515 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:15:38" (1/1) ... [2023-08-24 08:15:38,515 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:15:38" (1/1) ... [2023-08-24 08:15:38,517 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:15:38" (1/1) ... [2023-08-24 08:15:38,517 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:15:38" (1/1) ... [2023-08-24 08:15:38,526 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:15:38" (1/1) ... [2023-08-24 08:15:38,529 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:15:38" (1/1) ... [2023-08-24 08:15:38,530 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:15:38" (1/1) ... [2023-08-24 08:15:38,530 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:15:38" (1/1) ... [2023-08-24 08:15:38,532 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 08:15:38,533 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 08:15:38,533 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 08:15:38,533 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 08:15:38,534 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:15:38" (1/1) ... [2023-08-24 08:15:38,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 08:15:38,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:15:38,558 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) [2023-08-24 08:15:38,563 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 [2023-08-24 08:15:38,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 08:15:38,584 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 08:15:38,584 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 08:15:38,585 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 08:15:38,585 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 08:15:38,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 08:15:38,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 08:15:38,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 08:15:38,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 08:15:38,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 08:15:38,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 08:15:38,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 08:15:38,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 08:15:38,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 08:15:38,587 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 08:15:38,698 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 08:15:38,700 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 08:15:38,930 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 08:15:38,959 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 08:15:38,959 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-24 08:15:38,961 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 08:15:38 BoogieIcfgContainer [2023-08-24 08:15:38,961 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 08:15:38,966 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 08:15:38,966 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 08:15:38,969 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 08:15:38,969 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 08:15:38" (1/3) ... [2023-08-24 08:15:38,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a693493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 08:15:38, skipping insertion in model container [2023-08-24 08:15:38,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:15:38" (2/3) ... [2023-08-24 08:15:38,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a693493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 08:15:38, skipping insertion in model container [2023-08-24 08:15:38,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 08:15:38" (3/3) ... [2023-08-24 08:15:38,972 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2023-08-24 08:15:38,985 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 08:15:38,985 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 08:15:38,985 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 08:15:39,033 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-24 08:15:39,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 92 transitions, 200 flow [2023-08-24 08:15:39,109 INFO L124 PetriNetUnfolderBase]: 11/90 cut-off events. [2023-08-24 08:15:39,110 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 08:15:39,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 90 events. 11/90 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 104 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2023-08-24 08:15:39,114 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 92 transitions, 200 flow [2023-08-24 08:15:39,117 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 82 transitions, 176 flow [2023-08-24 08:15:39,119 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 08:15:39,127 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 82 transitions, 176 flow [2023-08-24 08:15:39,129 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 82 transitions, 176 flow [2023-08-24 08:15:39,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 82 transitions, 176 flow [2023-08-24 08:15:39,149 INFO L124 PetriNetUnfolderBase]: 11/82 cut-off events. [2023-08-24 08:15:39,150 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 08:15:39,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 82 events. 11/82 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 101 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2023-08-24 08:15:39,152 INFO L119 LiptonReduction]: Number of co-enabled transitions 1188 [2023-08-24 08:15:41,853 INFO L134 LiptonReduction]: Checked pairs total: 1141 [2023-08-24 08:15:41,854 INFO L136 LiptonReduction]: Total number of compositions: 81 [2023-08-24 08:15:41,865 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 08:15:41,870 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=LoopsAndPotentialCycles, 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;@24ea7fc1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 08:15:41,871 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-24 08:15:41,875 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 08:15:41,875 INFO L124 PetriNetUnfolderBase]: 2/12 cut-off events. [2023-08-24 08:15:41,875 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 08:15:41,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:15:41,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:15:41,876 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:15:41,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:15:41,880 INFO L85 PathProgramCache]: Analyzing trace with hash 941425486, now seen corresponding path program 1 times [2023-08-24 08:15:41,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:15:41,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286374437] [2023-08-24 08:15:41,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:15:41,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:15:42,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:15:42,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:15:42,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:15:42,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286374437] [2023-08-24 08:15:42,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286374437] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:15:42,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:15:42,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 08:15:42,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153524302] [2023-08-24 08:15:42,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:15:42,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 08:15:42,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:15:42,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 08:15:42,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 08:15:42,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 173 [2023-08-24 08:15:42,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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) [2023-08-24 08:15:42,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:15:42,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 173 [2023-08-24 08:15:42,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:15:42,209 INFO L124 PetriNetUnfolderBase]: 29/54 cut-off events. [2023-08-24 08:15:42,209 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-24 08:15:42,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 54 events. 29/54 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 88 event pairs, 1 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 90. Up to 45 conditions per place. [2023-08-24 08:15:42,212 INFO L140 encePairwiseOnDemand]: 170/173 looper letters, 17 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2023-08-24 08:15:42,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 19 transitions, 91 flow [2023-08-24 08:15:42,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 08:15:42,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 08:15:42,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 251 transitions. [2023-08-24 08:15:42,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4836223506743738 [2023-08-24 08:15:42,226 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 251 transitions. [2023-08-24 08:15:42,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 251 transitions. [2023-08-24 08:15:42,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:15:42,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 251 transitions. [2023-08-24 08:15:42,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:15:42,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-08-24 08:15:42,238 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-08-24 08:15:42,239 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 38 flow. Second operand 3 states and 251 transitions. [2023-08-24 08:15:42,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 19 transitions, 91 flow [2023-08-24 08:15:42,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 19 transitions, 81 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-24 08:15:42,243 INFO L231 Difference]: Finished difference. Result has 17 places, 14 transitions, 42 flow [2023-08-24 08:15:42,244 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=17, PETRI_TRANSITIONS=14} [2023-08-24 08:15:42,247 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -1 predicate places. [2023-08-24 08:15:42,247 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 14 transitions, 42 flow [2023-08-24 08:15:42,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 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) [2023-08-24 08:15:42,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:15:42,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:15:42,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 08:15:42,249 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:15:42,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:15:42,249 INFO L85 PathProgramCache]: Analyzing trace with hash 789177524, now seen corresponding path program 1 times [2023-08-24 08:15:42,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:15:42,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036428438] [2023-08-24 08:15:42,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:15:42,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:15:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:15:42,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 08:15:42,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:15:42,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036428438] [2023-08-24 08:15:42,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036428438] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:15:42,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:15:42,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 08:15:42,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396101789] [2023-08-24 08:15:42,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:15:42,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 08:15:42,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:15:42,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 08:15:42,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 08:15:42,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 173 [2023-08-24 08:15:42,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 14 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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) [2023-08-24 08:15:42,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:15:42,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 173 [2023-08-24 08:15:42,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:15:42,412 INFO L124 PetriNetUnfolderBase]: 40/73 cut-off events. [2023-08-24 08:15:42,412 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-24 08:15:42,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 73 events. 40/73 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 139 event pairs, 6 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 112. Up to 49 conditions per place. [2023-08-24 08:15:42,413 INFO L140 encePairwiseOnDemand]: 170/173 looper letters, 19 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-08-24 08:15:42,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 21 transitions, 106 flow [2023-08-24 08:15:42,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 08:15:42,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 08:15:42,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 251 transitions. [2023-08-24 08:15:42,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4836223506743738 [2023-08-24 08:15:42,419 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 251 transitions. [2023-08-24 08:15:42,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 251 transitions. [2023-08-24 08:15:42,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:15:42,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 251 transitions. [2023-08-24 08:15:42,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:15:42,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-08-24 08:15:42,422 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 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) [2023-08-24 08:15:42,422 INFO L175 Difference]: Start difference. First operand has 17 places, 14 transitions, 42 flow. Second operand 3 states and 251 transitions. [2023-08-24 08:15:42,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 21 transitions, 106 flow [2023-08-24 08:15:42,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 21 transitions, 103 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 08:15:42,425 INFO L231 Difference]: Finished difference. Result has 19 places, 15 transitions, 52 flow [2023-08-24 08:15:42,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=19, PETRI_TRANSITIONS=15} [2023-08-24 08:15:42,426 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 1 predicate places. [2023-08-24 08:15:42,426 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 15 transitions, 52 flow [2023-08-24 08:15:42,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 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) [2023-08-24 08:15:42,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:15:42,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:15:42,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 08:15:42,430 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:15:42,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:15:42,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1336220021, now seen corresponding path program 1 times [2023-08-24 08:15:42,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:15:42,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326027983] [2023-08-24 08:15:42,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:15:42,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:15:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:15:42,772 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 08:15:42,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:15:42,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326027983] [2023-08-24 08:15:42,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326027983] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:15:42,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331110439] [2023-08-24 08:15:42,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:15:42,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:15:42,774 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:15:42,783 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:15:42,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 08:15:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:15:42,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-24 08:15:42,859 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:15:43,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:15:43,065 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:15:43,328 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:15:43,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331110439] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:15:43,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:15:43,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 7 [2023-08-24 08:15:43,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351227373] [2023-08-24 08:15:43,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:15:43,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 08:15:43,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:15:43,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 08:15:43,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-08-24 08:15:43,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 173 [2023-08-24 08:15:43,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 15 transitions, 52 flow. Second operand has 8 states, 8 states have (on average 68.5) internal successors, (548), 8 states have internal predecessors, (548), 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) [2023-08-24 08:15:43,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:15:43,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 173 [2023-08-24 08:15:43,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:15:43,464 INFO L124 PetriNetUnfolderBase]: 61/110 cut-off events. [2023-08-24 08:15:43,465 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2023-08-24 08:15:43,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 110 events. 61/110 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 253 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 84. Up to 45 conditions per place. [2023-08-24 08:15:43,468 INFO L140 encePairwiseOnDemand]: 168/173 looper letters, 36 selfloop transitions, 11 changer transitions 0/47 dead transitions. [2023-08-24 08:15:43,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 47 transitions, 245 flow [2023-08-24 08:15:43,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 08:15:43,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 08:15:43,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 566 transitions. [2023-08-24 08:15:43,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40895953757225434 [2023-08-24 08:15:43,471 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 566 transitions. [2023-08-24 08:15:43,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 566 transitions. [2023-08-24 08:15:43,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:15:43,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 566 transitions. [2023-08-24 08:15:43,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 70.75) internal successors, (566), 8 states have internal predecessors, (566), 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) [2023-08-24 08:15:43,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 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) [2023-08-24 08:15:43,479 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 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) [2023-08-24 08:15:43,479 INFO L175 Difference]: Start difference. First operand has 19 places, 15 transitions, 52 flow. Second operand 8 states and 566 transitions. [2023-08-24 08:15:43,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 47 transitions, 245 flow [2023-08-24 08:15:43,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 47 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 08:15:43,481 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 125 flow [2023-08-24 08:15:43,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=125, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2023-08-24 08:15:43,482 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 10 predicate places. [2023-08-24 08:15:43,482 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 125 flow [2023-08-24 08:15:43,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 68.5) internal successors, (548), 8 states have internal predecessors, (548), 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) [2023-08-24 08:15:43,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:15:43,483 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:15:43,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-24 08:15:43,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:15:43,690 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:15:43,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:15:43,690 INFO L85 PathProgramCache]: Analyzing trace with hash 728758898, now seen corresponding path program 2 times [2023-08-24 08:15:43,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:15:43,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957803057] [2023-08-24 08:15:43,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:15:43,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:15:43,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:15:43,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 08:15:43,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:15:43,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957803057] [2023-08-24 08:15:43,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957803057] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:15:43,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244997101] [2023-08-24 08:15:43,884 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 08:15:43,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:15:43,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:15:43,885 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:15:43,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 08:15:43,955 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 08:15:43,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:15:43,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-24 08:15:43,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:15:44,003 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 08:15:44,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:15:44,323 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:15:44,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244997101] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:15:44,323 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:15:44,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 6] total 10 [2023-08-24 08:15:44,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342246051] [2023-08-24 08:15:44,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:15:44,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-24 08:15:44,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:15:44,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-24 08:15:44,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-08-24 08:15:44,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 173 [2023-08-24 08:15:44,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 125 flow. Second operand has 11 states, 11 states have (on average 60.90909090909091) internal successors, (670), 11 states have internal predecessors, (670), 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) [2023-08-24 08:15:44,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:15:44,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 173 [2023-08-24 08:15:44,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:15:44,573 INFO L124 PetriNetUnfolderBase]: 91/170 cut-off events. [2023-08-24 08:15:44,573 INFO L125 PetriNetUnfolderBase]: For 190/190 co-relation queries the response was YES. [2023-08-24 08:15:44,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 170 events. 91/170 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 483 event pairs, 2 based on Foata normal form. 16/176 useless extension candidates. Maximal degree in co-relation 257. Up to 67 conditions per place. [2023-08-24 08:15:44,575 INFO L140 encePairwiseOnDemand]: 168/173 looper letters, 41 selfloop transitions, 26 changer transitions 0/67 dead transitions. [2023-08-24 08:15:44,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 67 transitions, 436 flow [2023-08-24 08:15:44,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-24 08:15:44,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-24 08:15:44,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 820 transitions. [2023-08-24 08:15:44,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36460649177412185 [2023-08-24 08:15:44,578 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 820 transitions. [2023-08-24 08:15:44,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 820 transitions. [2023-08-24 08:15:44,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:15:44,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 820 transitions. [2023-08-24 08:15:44,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 63.07692307692308) internal successors, (820), 13 states have internal predecessors, (820), 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) [2023-08-24 08:15:44,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 173.0) internal successors, (2422), 14 states have internal predecessors, (2422), 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) [2023-08-24 08:15:44,585 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 173.0) internal successors, (2422), 14 states have internal predecessors, (2422), 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) [2023-08-24 08:15:44,585 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 125 flow. Second operand 13 states and 820 transitions. [2023-08-24 08:15:44,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 67 transitions, 436 flow [2023-08-24 08:15:44,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 67 transitions, 382 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-08-24 08:15:44,589 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 285 flow [2023-08-24 08:15:44,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=285, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-08-24 08:15:44,589 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 26 predicate places. [2023-08-24 08:15:44,590 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 285 flow [2023-08-24 08:15:44,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 60.90909090909091) internal successors, (670), 11 states have internal predecessors, (670), 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) [2023-08-24 08:15:44,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:15:44,590 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:15:44,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-24 08:15:44,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-24 08:15:44,796 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:15:44,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:15:44,797 INFO L85 PathProgramCache]: Analyzing trace with hash 793394256, now seen corresponding path program 3 times [2023-08-24 08:15:44,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:15:44,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85978641] [2023-08-24 08:15:44,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:15:44,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:15:44,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:15:45,386 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 08:15:45,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:15:45,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85978641] [2023-08-24 08:15:45,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85978641] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:15:45,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127608428] [2023-08-24 08:15:45,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 08:15:45,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:15:45,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:15:45,389 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:15:45,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-24 08:15:45,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-24 08:15:45,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:15:45,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-24 08:15:45,463 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:15:45,642 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:15:45,642 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:15:46,121 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 08:15:46,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127608428] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:15:46,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:15:46,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 14 [2023-08-24 08:15:46,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053122305] [2023-08-24 08:15:46,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:15:46,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 08:15:46,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:15:46,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 08:15:46,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2023-08-24 08:15:46,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 173 [2023-08-24 08:15:46,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 285 flow. Second operand has 16 states, 16 states have (on average 56.3125) internal successors, (901), 16 states have internal predecessors, (901), 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) [2023-08-24 08:15:46,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:15:46,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 173 [2023-08-24 08:15:46,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:15:46,853 INFO L124 PetriNetUnfolderBase]: 194/365 cut-off events. [2023-08-24 08:15:46,853 INFO L125 PetriNetUnfolderBase]: For 838/838 co-relation queries the response was YES. [2023-08-24 08:15:46,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1591 conditions, 365 events. 194/365 cut-off events. For 838/838 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1432 event pairs, 4 based on Foata normal form. 10/375 useless extension candidates. Maximal degree in co-relation 1022. Up to 103 conditions per place. [2023-08-24 08:15:46,857 INFO L140 encePairwiseOnDemand]: 167/173 looper letters, 50 selfloop transitions, 54 changer transitions 30/134 dead transitions. [2023-08-24 08:15:46,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 134 transitions, 1100 flow [2023-08-24 08:15:46,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-24 08:15:46,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-24 08:15:46,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1181 transitions. [2023-08-24 08:15:46,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34132947976878614 [2023-08-24 08:15:46,861 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1181 transitions. [2023-08-24 08:15:46,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1181 transitions. [2023-08-24 08:15:46,862 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:15:46,862 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1181 transitions. [2023-08-24 08:15:46,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 59.05) internal successors, (1181), 20 states have internal predecessors, (1181), 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) [2023-08-24 08:15:46,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 173.0) internal successors, (3633), 21 states have internal predecessors, (3633), 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) [2023-08-24 08:15:46,869 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 173.0) internal successors, (3633), 21 states have internal predecessors, (3633), 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) [2023-08-24 08:15:46,869 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 285 flow. Second operand 20 states and 1181 transitions. [2023-08-24 08:15:46,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 134 transitions, 1100 flow [2023-08-24 08:15:46,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 134 transitions, 1000 flow, removed 34 selfloop flow, removed 6 redundant places. [2023-08-24 08:15:46,876 INFO L231 Difference]: Finished difference. Result has 63 places, 70 transitions, 670 flow [2023-08-24 08:15:46,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=670, PETRI_PLACES=63, PETRI_TRANSITIONS=70} [2023-08-24 08:15:46,877 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 45 predicate places. [2023-08-24 08:15:46,877 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 70 transitions, 670 flow [2023-08-24 08:15:46,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 56.3125) internal successors, (901), 16 states have internal predecessors, (901), 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) [2023-08-24 08:15:46,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:15:46,878 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:15:46,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-24 08:15:47,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:15:47,084 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:15:47,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:15:47,085 INFO L85 PathProgramCache]: Analyzing trace with hash -2120211330, now seen corresponding path program 4 times [2023-08-24 08:15:47,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:15:47,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628884209] [2023-08-24 08:15:47,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:15:47,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:15:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:15:47,642 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:15:47,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:15:47,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628884209] [2023-08-24 08:15:47,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628884209] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:15:47,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036565130] [2023-08-24 08:15:47,642 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 08:15:47,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:15:47,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:15:47,645 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:15:47,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-24 08:15:47,710 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 08:15:47,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:15:47,711 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-24 08:15:47,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:15:47,873 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:15:47,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:15:48,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:15:48,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036565130] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:15:48,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:15:48,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-24 08:15:48,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824610873] [2023-08-24 08:15:48,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:15:48,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-24 08:15:48,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:15:48,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-24 08:15:48,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-08-24 08:15:48,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 173 [2023-08-24 08:15:48,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 70 transitions, 670 flow. Second operand has 18 states, 18 states have (on average 56.166666666666664) internal successors, (1011), 18 states have internal predecessors, (1011), 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) [2023-08-24 08:15:48,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:15:48,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 173 [2023-08-24 08:15:48,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:15:48,851 INFO L124 PetriNetUnfolderBase]: 130/236 cut-off events. [2023-08-24 08:15:48,851 INFO L125 PetriNetUnfolderBase]: For 761/761 co-relation queries the response was YES. [2023-08-24 08:15:48,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1213 conditions, 236 events. 130/236 cut-off events. For 761/761 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 769 event pairs, 0 based on Foata normal form. 19/255 useless extension candidates. Maximal degree in co-relation 1197. Up to 73 conditions per place. [2023-08-24 08:15:48,853 INFO L140 encePairwiseOnDemand]: 167/173 looper letters, 0 selfloop transitions, 0 changer transitions 86/86 dead transitions. [2023-08-24 08:15:48,853 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 86 transitions, 875 flow [2023-08-24 08:15:48,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-24 08:15:48,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-24 08:15:48,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 587 transitions. [2023-08-24 08:15:48,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393063583815029 [2023-08-24 08:15:48,856 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 587 transitions. [2023-08-24 08:15:48,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 587 transitions. [2023-08-24 08:15:48,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:15:48,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 587 transitions. [2023-08-24 08:15:48,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.7) internal successors, (587), 10 states have internal predecessors, (587), 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) [2023-08-24 08:15:48,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 173.0) internal successors, (1903), 11 states have internal predecessors, (1903), 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) [2023-08-24 08:15:48,862 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 173.0) internal successors, (1903), 11 states have internal predecessors, (1903), 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) [2023-08-24 08:15:48,862 INFO L175 Difference]: Start difference. First operand has 63 places, 70 transitions, 670 flow. Second operand 10 states and 587 transitions. [2023-08-24 08:15:48,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 86 transitions, 875 flow [2023-08-24 08:15:48,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 86 transitions, 693 flow, removed 60 selfloop flow, removed 9 redundant places. [2023-08-24 08:15:48,868 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2023-08-24 08:15:48,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2023-08-24 08:15:48,871 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 37 predicate places. [2023-08-24 08:15:48,871 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2023-08-24 08:15:48,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 56.166666666666664) internal successors, (1011), 18 states have internal predecessors, (1011), 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) [2023-08-24 08:15:48,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-24 08:15:48,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-24 08:15:48,874 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-24 08:15:48,884 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-24 08:15:49,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:15:49,080 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2023-08-24 08:15:49,082 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 08:15:49,082 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 08:15:49,084 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 08:15:49 BasicIcfg [2023-08-24 08:15:49,085 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 08:15:49,085 INFO L158 Benchmark]: Toolchain (without parser) took 10876.99ms. Allocated memory was 400.6MB in the beginning and 583.0MB in the end (delta: 182.5MB). Free memory was 376.4MB in the beginning and 507.2MB in the end (delta: -130.8MB). Peak memory consumption was 54.7MB. Max. memory is 16.0GB. [2023-08-24 08:15:49,085 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 400.6MB. Free memory was 378.0MB in the beginning and 377.8MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 08:15:49,086 INFO L158 Benchmark]: CACSL2BoogieTranslator took 257.04ms. Allocated memory is still 400.6MB. Free memory was 376.4MB in the beginning and 365.8MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-24 08:15:49,086 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.89ms. Allocated memory is still 400.6MB. Free memory was 365.1MB in the beginning and 363.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 08:15:49,086 INFO L158 Benchmark]: Boogie Preprocessor took 24.23ms. Allocated memory is still 400.6MB. Free memory was 363.7MB in the beginning and 362.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 08:15:49,087 INFO L158 Benchmark]: RCFGBuilder took 428.74ms. Allocated memory is still 400.6MB. Free memory was 362.2MB in the beginning and 348.3MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-24 08:15:49,087 INFO L158 Benchmark]: TraceAbstraction took 10118.38ms. Allocated memory was 400.6MB in the beginning and 583.0MB in the end (delta: 182.5MB). Free memory was 347.3MB in the beginning and 507.2MB in the end (delta: -159.9MB). Peak memory consumption was 25.3MB. Max. memory is 16.0GB. [2023-08-24 08:15:49,089 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 400.6MB. Free memory was 378.0MB in the beginning and 377.8MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 257.04ms. Allocated memory is still 400.6MB. Free memory was 376.4MB in the beginning and 365.8MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 37.89ms. Allocated memory is still 400.6MB. Free memory was 365.1MB in the beginning and 363.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 24.23ms. Allocated memory is still 400.6MB. Free memory was 363.7MB in the beginning and 362.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 428.74ms. Allocated memory is still 400.6MB. Free memory was 362.2MB in the beginning and 348.3MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 10118.38ms. Allocated memory was 400.6MB in the beginning and 583.0MB in the end (delta: 182.5MB). Free memory was 347.3MB in the beginning and 507.2MB in the end (delta: -159.9MB). Peak memory consumption was 25.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 78 PlacesBefore, 18 PlacesAfterwards, 82 TransitionsBefore, 13 TransitionsAfterwards, 1188 CoEnabledTransitionPairs, 6 FixpointIterations, 29 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 6 ConcurrentYvCompositions, 9 ChoiceCompositions, 81 TotalNumberOfCompositions, 1141 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1095, independent: 1089, independent conditional: 0, independent unconditional: 1089, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 617, independent: 614, independent conditional: 0, independent unconditional: 614, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1095, independent: 475, independent conditional: 0, independent unconditional: 475, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 617, unknown conditional: 0, unknown unconditional: 617] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 101]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 112 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: 10.0s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 261 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 261 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 85 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 706 IncrementalHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 85 mSolverCounterUnsat, 0 mSDtfsCounter, 706 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 75 SyntacticMatches, 6 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=670occurred in iteration=5, InterpolantAutomatonStates: 57, 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, 0.3s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 1809 SizeOfPredicates, 23 NumberOfNonLiveVariables, 453 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 11/55 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! [2023-08-24 08:15:49,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...