/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 01:39:18,020 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 01:39:18,083 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 01:39:18,087 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 01:39:18,087 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 01:39:18,107 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 01:39:18,107 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 01:39:18,107 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 01:39:18,108 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 01:39:18,110 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 01:39:18,111 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 01:39:18,111 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 01:39:18,111 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 01:39:18,112 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 01:39:18,112 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 01:39:18,112 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 01:39:18,112 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 01:39:18,112 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 01:39:18,113 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 01:39:18,113 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 01:39:18,113 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 01:39:18,113 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 01:39:18,113 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 01:39:18,114 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 01:39:18,114 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 01:39:18,114 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 01:39:18,114 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 01:39:18,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 01:39:18,115 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 01:39:18,115 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 01:39:18,115 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 01:39:18,116 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 01:39:18,116 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 01:39:18,116 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 01:39:18,116 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 01:39:18,116 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-24 01:39:18,348 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 01:39:18,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 01:39:18,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 01:39:18,365 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 01:39:18,365 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 01:39:18,366 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c [2023-08-24 01:39:19,236 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 01:39:19,419 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 01:39:19,420 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-min-max-1.wvr.c [2023-08-24 01:39:19,426 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1cac5037/16f55c65c7494f5492a70e68ef618a91/FLAGda6fd1a45 [2023-08-24 01:39:19,435 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1cac5037/16f55c65c7494f5492a70e68ef618a91 [2023-08-24 01:39:19,437 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 01:39:19,438 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 01:39:19,438 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 01:39:19,439 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 01:39:19,440 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 01:39:19,441 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:39:19" (1/1) ... [2023-08-24 01:39:19,441 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@404b1fad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:39:19, skipping insertion in model container [2023-08-24 01:39:19,441 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:39:19" (1/1) ... [2023-08-24 01:39:19,461 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 01:39:19,565 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-min-max-1.wvr.c[3057,3070] [2023-08-24 01:39:19,568 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 01:39:19,574 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 01:39:19,588 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-min-max-1.wvr.c[3057,3070] [2023-08-24 01:39:19,591 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 01:39:19,596 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 01:39:19,596 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 01:39:19,600 INFO L206 MainTranslator]: Completed translation [2023-08-24 01:39:19,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:39:19 WrapperNode [2023-08-24 01:39:19,601 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 01:39:19,601 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 01:39:19,602 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 01:39:19,602 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 01:39:19,606 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:39:19" (1/1) ... [2023-08-24 01:39:19,621 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:39:19" (1/1) ... [2023-08-24 01:39:19,645 INFO L138 Inliner]: procedures = 25, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 130 [2023-08-24 01:39:19,645 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 01:39:19,646 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 01:39:19,646 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 01:39:19,646 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 01:39:19,652 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:39:19" (1/1) ... [2023-08-24 01:39:19,652 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:39:19" (1/1) ... [2023-08-24 01:39:19,663 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:39:19" (1/1) ... [2023-08-24 01:39:19,663 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:39:19" (1/1) ... [2023-08-24 01:39:19,674 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:39:19" (1/1) ... [2023-08-24 01:39:19,683 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:39:19" (1/1) ... [2023-08-24 01:39:19,684 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:39:19" (1/1) ... [2023-08-24 01:39:19,685 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:39:19" (1/1) ... [2023-08-24 01:39:19,686 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 01:39:19,687 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 01:39:19,687 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 01:39:19,687 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 01:39:19,687 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:39:19" (1/1) ... [2023-08-24 01:39:19,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 01:39:19,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:39:19,720 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 01:39:19,749 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 01:39:19,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 01:39:19,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 01:39:19,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 01:39:19,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 01:39:19,761 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 01:39:19,761 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 01:39:19,761 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 01:39:19,761 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 01:39:19,761 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 01:39:19,761 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 01:39:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 01:39:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 01:39:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 01:39:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 01:39:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 01:39:19,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 01:39:19,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 01:39:19,765 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 01:39:19,860 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 01:39:19,862 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 01:39:20,131 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 01:39:20,180 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 01:39:20,180 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-24 01:39:20,182 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:39:20 BoogieIcfgContainer [2023-08-24 01:39:20,182 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 01:39:20,184 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 01:39:20,184 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 01:39:20,186 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 01:39:20,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 01:39:19" (1/3) ... [2023-08-24 01:39:20,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ae0657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:39:20, skipping insertion in model container [2023-08-24 01:39:20,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:39:19" (2/3) ... [2023-08-24 01:39:20,186 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ae0657 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:39:20, skipping insertion in model container [2023-08-24 01:39:20,186 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:39:20" (3/3) ... [2023-08-24 01:39:20,187 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2023-08-24 01:39:20,198 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 01:39:20,198 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 01:39:20,198 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 01:39:20,261 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 01:39:20,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 172 transitions, 368 flow [2023-08-24 01:39:20,332 INFO L124 PetriNetUnfolderBase]: 12/169 cut-off events. [2023-08-24 01:39:20,336 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 01:39:20,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 169 events. 12/169 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 113 event pairs, 0 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 140. Up to 2 conditions per place. [2023-08-24 01:39:20,340 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 172 transitions, 368 flow [2023-08-24 01:39:20,343 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 159 transitions, 336 flow [2023-08-24 01:39:20,345 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 01:39:20,351 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 159 transitions, 336 flow [2023-08-24 01:39:20,356 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 159 transitions, 336 flow [2023-08-24 01:39:20,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 159 transitions, 336 flow [2023-08-24 01:39:20,406 INFO L124 PetriNetUnfolderBase]: 12/159 cut-off events. [2023-08-24 01:39:20,407 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 01:39:20,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 159 events. 12/159 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 113 event pairs, 0 based on Foata normal form. 0/147 useless extension candidates. Maximal degree in co-relation 140. Up to 2 conditions per place. [2023-08-24 01:39:20,408 INFO L119 LiptonReduction]: Number of co-enabled transitions 1250 [2023-08-24 01:39:25,388 INFO L134 LiptonReduction]: Checked pairs total: 1957 [2023-08-24 01:39:25,388 INFO L136 LiptonReduction]: Total number of compositions: 163 [2023-08-24 01:39:25,397 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 01:39:25,401 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;@1b2cb5a6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 01:39:25,401 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 01:39:25,406 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 01:39:25,406 INFO L124 PetriNetUnfolderBase]: 3/23 cut-off events. [2023-08-24 01:39:25,406 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 01:39:25,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:39:25,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:39:25,406 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:39:25,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:39:25,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1755034696, now seen corresponding path program 1 times [2023-08-24 01:39:25,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:39:25,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145497410] [2023-08-24 01:39:25,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:39:25,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:39:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:39:25,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:39:25,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:39:25,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145497410] [2023-08-24 01:39:25,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145497410] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:39:25,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:39:25,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 01:39:25,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596456821] [2023-08-24 01:39:25,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:39:25,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 01:39:25,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:39:25,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 01:39:25,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 01:39:25,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 335 [2023-08-24 01:39:25,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 146.25) internal successors, (585), 4 states have internal predecessors, (585), 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 01:39:25,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:39:25,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 335 [2023-08-24 01:39:25,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:39:25,813 INFO L124 PetriNetUnfolderBase]: 282/438 cut-off events. [2023-08-24 01:39:25,814 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-08-24 01:39:25,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 944 conditions, 438 events. 282/438 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1316 event pairs, 173 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 800. Up to 356 conditions per place. [2023-08-24 01:39:25,817 INFO L140 encePairwiseOnDemand]: 331/335 looper letters, 32 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2023-08-24 01:39:25,817 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 164 flow [2023-08-24 01:39:25,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 01:39:25,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 01:39:25,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 600 transitions. [2023-08-24 01:39:25,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44776119402985076 [2023-08-24 01:39:25,828 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 600 transitions. [2023-08-24 01:39:25,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 600 transitions. [2023-08-24 01:39:25,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:39:25,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 600 transitions. [2023-08-24 01:39:25,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:39:25,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 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 01:39:25,844 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 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 01:39:25,845 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 66 flow. Second operand 4 states and 600 transitions. [2023-08-24 01:39:25,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 164 flow [2023-08-24 01:39:25,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 148 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-24 01:39:25,850 INFO L231 Difference]: Finished difference. Result has 29 places, 25 transitions, 68 flow [2023-08-24 01:39:25,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=29, PETRI_TRANSITIONS=25} [2023-08-24 01:39:25,854 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, -2 predicate places. [2023-08-24 01:39:25,854 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 25 transitions, 68 flow [2023-08-24 01:39:25,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 146.25) internal successors, (585), 4 states have internal predecessors, (585), 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 01:39:25,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:39:25,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:39:25,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 01:39:25,855 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:39:25,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:39:25,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1833042564, now seen corresponding path program 1 times [2023-08-24 01:39:25,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:39:25,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007810019] [2023-08-24 01:39:25,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:39:25,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:39:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:39:25,983 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 01:39:25,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:39:25,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007810019] [2023-08-24 01:39:25,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007810019] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:39:25,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:39:25,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 01:39:25,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544789548] [2023-08-24 01:39:25,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:39:25,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 01:39:25,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:39:25,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 01:39:25,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 01:39:25,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 335 [2023-08-24 01:39:25,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 146.5) internal successors, (586), 4 states have internal predecessors, (586), 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 01:39:25,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:39:25,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 335 [2023-08-24 01:39:25,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:39:26,054 INFO L124 PetriNetUnfolderBase]: 344/532 cut-off events. [2023-08-24 01:39:26,054 INFO L125 PetriNetUnfolderBase]: For 146/146 co-relation queries the response was YES. [2023-08-24 01:39:26,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 532 events. 344/532 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1673 event pairs, 221 based on Foata normal form. 0/465 useless extension candidates. Maximal degree in co-relation 397. Up to 438 conditions per place. [2023-08-24 01:39:26,057 INFO L140 encePairwiseOnDemand]: 331/335 looper letters, 34 selfloop transitions, 3 changer transitions 0/37 dead transitions. [2023-08-24 01:39:26,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 37 transitions, 178 flow [2023-08-24 01:39:26,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 01:39:26,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 01:39:26,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 600 transitions. [2023-08-24 01:39:26,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44776119402985076 [2023-08-24 01:39:26,059 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 600 transitions. [2023-08-24 01:39:26,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 600 transitions. [2023-08-24 01:39:26,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:39:26,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 600 transitions. [2023-08-24 01:39:26,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 150.0) internal successors, (600), 4 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:39:26,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 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 01:39:26,062 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 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 01:39:26,062 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 68 flow. Second operand 4 states and 600 transitions. [2023-08-24 01:39:26,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 37 transitions, 178 flow [2023-08-24 01:39:26,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 37 transitions, 168 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-24 01:39:26,063 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 76 flow [2023-08-24 01:39:26,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=76, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-08-24 01:39:26,064 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 0 predicate places. [2023-08-24 01:39:26,064 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 76 flow [2023-08-24 01:39:26,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 146.5) internal successors, (586), 4 states have internal predecessors, (586), 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 01:39:26,065 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:39:26,065 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:39:26,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 01:39:26,065 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:39:26,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:39:26,065 INFO L85 PathProgramCache]: Analyzing trace with hash -873477243, now seen corresponding path program 1 times [2023-08-24 01:39:26,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:39:26,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537313045] [2023-08-24 01:39:26,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:39:26,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:39:26,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:39:26,148 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 01:39:26,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:39:26,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537313045] [2023-08-24 01:39:26,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537313045] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:39:26,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:39:26,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 01:39:26,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923026424] [2023-08-24 01:39:26,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:39:26,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 01:39:26,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:39:26,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 01:39:26,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 01:39:26,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 335 [2023-08-24 01:39:26,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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 01:39:26,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:39:26,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 335 [2023-08-24 01:39:26,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:39:26,216 INFO L124 PetriNetUnfolderBase]: 344/533 cut-off events. [2023-08-24 01:39:26,216 INFO L125 PetriNetUnfolderBase]: For 204/204 co-relation queries the response was YES. [2023-08-24 01:39:26,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1365 conditions, 533 events. 344/533 cut-off events. For 204/204 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1619 event pairs, 277 based on Foata normal form. 0/466 useless extension candidates. Maximal degree in co-relation 594. Up to 533 conditions per place. [2023-08-24 01:39:26,219 INFO L140 encePairwiseOnDemand]: 332/335 looper letters, 25 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2023-08-24 01:39:26,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 132 flow [2023-08-24 01:39:26,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 01:39:26,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 01:39:26,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 425 transitions. [2023-08-24 01:39:26,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4228855721393035 [2023-08-24 01:39:26,221 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 425 transitions. [2023-08-24 01:39:26,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 425 transitions. [2023-08-24 01:39:26,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:39:26,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 425 transitions. [2023-08-24 01:39:26,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.66666666666666) internal successors, (425), 3 states have internal predecessors, (425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:39:26,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 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 01:39:26,223 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 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 01:39:26,223 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 76 flow. Second operand 3 states and 425 transitions. [2023-08-24 01:39:26,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 132 flow [2023-08-24 01:39:26,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 126 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-24 01:39:26,225 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 82 flow [2023-08-24 01:39:26,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-08-24 01:39:26,226 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2023-08-24 01:39:26,228 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 82 flow [2023-08-24 01:39:26,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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 01:39:26,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:39:26,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:39:26,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 01:39:26,229 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:39:26,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:39:26,229 INFO L85 PathProgramCache]: Analyzing trace with hash 700259226, now seen corresponding path program 1 times [2023-08-24 01:39:26,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:39:26,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590962756] [2023-08-24 01:39:26,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:39:26,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:39:26,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:39:26,642 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:39:26,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:39:26,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590962756] [2023-08-24 01:39:26,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590962756] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:39:26,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775587761] [2023-08-24 01:39:26,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:39:26,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:39:26,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:39:26,646 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 01:39:26,675 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 01:39:26,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:39:26,762 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 43 conjunts are in the unsatisfiable core [2023-08-24 01:39:26,766 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:39:26,838 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-24 01:39:26,891 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 01:39:26,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 01:39:26,936 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-24 01:39:26,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 01:39:27,000 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2023-08-24 01:39:27,045 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-08-24 01:39:27,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:39:27,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 01:39:27,242 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset))) (and (or (forall ((v_ArrVal_109 (Array Int Int))) (<= .cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_109) c_~A~0.base) c_~A~0.offset))) (<= c_~min~0 .cse0)) (forall ((v_ArrVal_109 (Array Int Int))) (let ((.cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_109) c_~A~0.base) c_~A~0.offset))) (or (<= c_~min~0 .cse1) (< .cse1 .cse0)))))) is different from false [2023-08-24 01:39:33,486 WARN L234 SmtUtils]: Spent 6.17s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 01:39:33,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:39:33,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775587761] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 01:39:33,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 01:39:33,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 8] total 25 [2023-08-24 01:39:33,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859220983] [2023-08-24 01:39:33,527 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 01:39:33,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-24 01:39:33,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:39:33,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-24 01:39:33,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=490, Unknown=3, NotChecked=46, Total=650 [2023-08-24 01:39:33,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 335 [2023-08-24 01:39:33,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 82 flow. Second operand has 26 states, 26 states have (on average 101.76923076923077) internal successors, (2646), 26 states have internal predecessors, (2646), 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 01:39:33,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:39:33,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 335 [2023-08-24 01:39:33,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:39:34,643 INFO L124 PetriNetUnfolderBase]: 634/984 cut-off events. [2023-08-24 01:39:34,643 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2023-08-24 01:39:34,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2446 conditions, 984 events. 634/984 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3787 event pairs, 99 based on Foata normal form. 3/826 useless extension candidates. Maximal degree in co-relation 2433. Up to 219 conditions per place. [2023-08-24 01:39:34,646 INFO L140 encePairwiseOnDemand]: 326/335 looper letters, 0 selfloop transitions, 0 changer transitions 149/149 dead transitions. [2023-08-24 01:39:34,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 149 transitions, 730 flow [2023-08-24 01:39:34,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-24 01:39:34,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-24 01:39:34,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1932 transitions. [2023-08-24 01:39:34,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32039800995024875 [2023-08-24 01:39:34,651 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1932 transitions. [2023-08-24 01:39:34,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1932 transitions. [2023-08-24 01:39:34,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:39:34,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1932 transitions. [2023-08-24 01:39:34,656 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 107.33333333333333) internal successors, (1932), 18 states have internal predecessors, (1932), 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 01:39:34,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 335.0) internal successors, (6365), 19 states have internal predecessors, (6365), 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 01:39:34,661 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 335.0) internal successors, (6365), 19 states have internal predecessors, (6365), 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 01:39:34,662 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 82 flow. Second operand 18 states and 1932 transitions. [2023-08-24 01:39:34,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 149 transitions, 730 flow [2023-08-24 01:39:34,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 149 transitions, 726 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 01:39:34,665 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2023-08-24 01:39:34,665 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2023-08-24 01:39:34,666 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 16 predicate places. [2023-08-24 01:39:34,666 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2023-08-24 01:39:34,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 101.76923076923077) internal successors, (2646), 26 states have internal predecessors, (2646), 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 01:39:34,670 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 01:39:34,670 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 01:39:34,672 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 01:39:34,674 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 01:39:34,683 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 01:39:34,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:39:34,880 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-24 01:39:34,883 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 01:39:34,883 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 01:39:34,885 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 01:39:34 BasicIcfg [2023-08-24 01:39:34,885 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 01:39:34,885 INFO L158 Benchmark]: Toolchain (without parser) took 15447.49ms. Allocated memory was 358.6MB in the beginning and 570.4MB in the end (delta: 211.8MB). Free memory was 333.4MB in the beginning and 480.2MB in the end (delta: -146.8MB). Peak memory consumption was 64.0MB. Max. memory is 16.0GB. [2023-08-24 01:39:34,885 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 358.6MB. Free memory is still 336.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 01:39:34,886 INFO L158 Benchmark]: CACSL2BoogieTranslator took 162.46ms. Allocated memory is still 358.6MB. Free memory was 333.4MB in the beginning and 320.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 01:39:34,886 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.56ms. Allocated memory is still 358.6MB. Free memory was 320.8MB in the beginning and 318.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 01:39:34,886 INFO L158 Benchmark]: Boogie Preprocessor took 40.32ms. Allocated memory is still 358.6MB. Free memory was 318.7MB in the beginning and 317.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 01:39:34,886 INFO L158 Benchmark]: RCFGBuilder took 495.65ms. Allocated memory is still 358.6MB. Free memory was 317.2MB in the beginning and 294.4MB in the end (delta: 22.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-24 01:39:34,887 INFO L158 Benchmark]: TraceAbstraction took 14701.41ms. Allocated memory was 358.6MB in the beginning and 570.4MB in the end (delta: 211.8MB). Free memory was 294.1MB in the beginning and 480.2MB in the end (delta: -186.1MB). Peak memory consumption was 26.2MB. Max. memory is 16.0GB. [2023-08-24 01:39:34,888 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 358.6MB. Free memory is still 336.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 162.46ms. Allocated memory is still 358.6MB. Free memory was 333.4MB in the beginning and 320.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 43.56ms. Allocated memory is still 358.6MB. Free memory was 320.8MB in the beginning and 318.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 40.32ms. Allocated memory is still 358.6MB. Free memory was 318.7MB in the beginning and 317.2MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 495.65ms. Allocated memory is still 358.6MB. Free memory was 317.2MB in the beginning and 294.4MB in the end (delta: 22.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 14701.41ms. Allocated memory was 358.6MB in the beginning and 570.4MB in the end (delta: 211.8MB). Free memory was 294.1MB in the beginning and 480.2MB in the end (delta: -186.1MB). Peak memory consumption was 26.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.0s, 157 PlacesBefore, 31 PlacesAfterwards, 159 TransitionsBefore, 24 TransitionsAfterwards, 1250 CoEnabledTransitionPairs, 8 FixpointIterations, 94 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 28 TrivialYvCompositions, 4 ConcurrentYvCompositions, 9 ChoiceCompositions, 163 TotalNumberOfCompositions, 1957 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1466, independent: 1402, independent conditional: 0, independent unconditional: 1402, dependent: 64, dependent conditional: 0, dependent unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 666, independent: 645, independent conditional: 0, independent unconditional: 645, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1466, independent: 757, independent conditional: 0, independent unconditional: 757, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 666, unknown conditional: 0, unknown unconditional: 666] , Statistics on independence cache: Total cache size (in pairs): 59, Positive cache size: 52, Positive conditional cache size: 0, Positive unconditional cache size: 52, 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: 115]: 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 7 procedures, 192 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.6s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 359 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 359 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 133 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 731 IncrementalHoareTripleChecker+Invalid, 901 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 0 mSDtfsCounter, 731 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 40 SyntacticMatches, 9 SemanticMatches, 45 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 7.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=3, InterpolantAutomatonStates: 29, 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, 7.5s InterpolantComputationTime, 114 NumberOfCodeBlocks, 114 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 132 ConstructedInterpolants, 4 QuantifiedInterpolants, 1150 SizeOfPredicates, 22 NumberOfNonLiveVariables, 228 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 5/12 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 01:39:34,916 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...