/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/pthread-wmm/safe036.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-23 23:12:03,240 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-23 23:12:03,311 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 [2023-08-23 23:12:03,315 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-23 23:12:03,315 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-23 23:12:03,347 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-23 23:12:03,348 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-23 23:12:03,348 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-23 23:12:03,349 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-23 23:12:03,352 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-23 23:12:03,352 INFO L153 SettingsManager]: * Use SBE=true [2023-08-23 23:12:03,353 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-23 23:12:03,353 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-23 23:12:03,354 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-23 23:12:03,354 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-23 23:12:03,355 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-23 23:12:03,355 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-23 23:12:03,355 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-23 23:12:03,355 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-23 23:12:03,356 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-23 23:12:03,356 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-23 23:12:03,357 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-23 23:12:03,357 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-23 23:12:03,357 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-23 23:12:03,358 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-23 23:12:03,358 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-23 23:12:03,358 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-23 23:12:03,358 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:12:03,359 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-23 23:12:03,359 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-23 23:12:03,360 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-23 23:12:03,360 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-23 23:12:03,360 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-23 23:12:03,360 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-23 23:12:03,360 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-23 23:12:03,361 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-23 23:12:03,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-23 23:12:03,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-23 23:12:03,703 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-23 23:12:03,704 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-23 23:12:03,705 INFO L274 PluginConnector]: CDTParser initialized [2023-08-23 23:12:03,707 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe036.i [2023-08-23 23:12:04,825 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-23 23:12:05,066 INFO L384 CDTParser]: Found 1 translation units. [2023-08-23 23:12:05,067 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036.i [2023-08-23 23:12:05,080 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdc832523/cb0b0b0a290948219693168b0aaf09c0/FLAGbf8b173de [2023-08-23 23:12:05,095 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bdc832523/cb0b0b0a290948219693168b0aaf09c0 [2023-08-23 23:12:05,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-23 23:12:05,098 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-23 23:12:05,099 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-23 23:12:05,099 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-23 23:12:05,101 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-23 23:12:05,102 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:12:05" (1/1) ... [2023-08-23 23:12:05,102 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28a14e8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:05, skipping insertion in model container [2023-08-23 23:12:05,103 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.08 11:12:05" (1/1) ... [2023-08-23 23:12:05,152 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-23 23:12:05,296 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036.i[941,954] [2023-08-23 23:12:05,464 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:12:05,473 INFO L201 MainTranslator]: Completed pre-run [2023-08-23 23:12:05,486 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe036.i[941,954] [2023-08-23 23:12:05,504 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-23 23:12:05,506 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-23 23:12:05,526 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-23 23:12:05,558 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-23 23:12:05,559 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-23 23:12:05,565 INFO L206 MainTranslator]: Completed translation [2023-08-23 23:12:05,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:05 WrapperNode [2023-08-23 23:12:05,565 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-23 23:12:05,566 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-23 23:12:05,566 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-23 23:12:05,566 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-23 23:12:05,572 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:05" (1/1) ... [2023-08-23 23:12:05,602 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:05" (1/1) ... [2023-08-23 23:12:05,624 INFO L138 Inliner]: procedures = 175, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2023-08-23 23:12:05,624 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-23 23:12:05,625 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-23 23:12:05,626 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-23 23:12:05,626 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-23 23:12:05,633 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:05" (1/1) ... [2023-08-23 23:12:05,633 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:05" (1/1) ... [2023-08-23 23:12:05,638 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:05" (1/1) ... [2023-08-23 23:12:05,639 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:05" (1/1) ... [2023-08-23 23:12:05,653 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:05" (1/1) ... [2023-08-23 23:12:05,654 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:05" (1/1) ... [2023-08-23 23:12:05,655 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:05" (1/1) ... [2023-08-23 23:12:05,656 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:05" (1/1) ... [2023-08-23 23:12:05,658 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-23 23:12:05,659 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-23 23:12:05,659 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-23 23:12:05,659 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-23 23:12:05,659 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:05" (1/1) ... [2023-08-23 23:12:05,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-23 23:12:05,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-23 23:12:05,693 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) [2023-08-23 23:12:05,702 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 [2023-08-23 23:12:05,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-23 23:12:05,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-23 23:12:05,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-23 23:12:05,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-23 23:12:05,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-23 23:12:05,729 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-23 23:12:05,729 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-23 23:12:05,729 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-23 23:12:05,730 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-23 23:12:05,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-23 23:12:05,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-23 23:12:05,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-23 23:12:05,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-23 23:12:05,732 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-23 23:12:05,873 INFO L236 CfgBuilder]: Building ICFG [2023-08-23 23:12:05,875 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-23 23:12:06,033 INFO L277 CfgBuilder]: Performing block encoding [2023-08-23 23:12:06,045 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-23 23:12:06,045 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-23 23:12:06,047 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:12:06 BoogieIcfgContainer [2023-08-23 23:12:06,047 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-23 23:12:06,049 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-23 23:12:06,049 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-23 23:12:06,052 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-23 23:12:06,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.08 11:12:05" (1/3) ... [2023-08-23 23:12:06,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6329a487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:12:06, skipping insertion in model container [2023-08-23 23:12:06,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.08 11:12:05" (2/3) ... [2023-08-23 23:12:06,054 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6329a487 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.08 11:12:06, skipping insertion in model container [2023-08-23 23:12:06,054 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.08 11:12:06" (3/3) ... [2023-08-23 23:12:06,055 INFO L112 eAbstractionObserver]: Analyzing ICFG safe036.i [2023-08-23 23:12:06,068 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-23 23:12:06,069 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-23 23:12:06,069 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-23 23:12:06,108 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-23 23:12:06,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 146 flow [2023-08-23 23:12:06,225 INFO L124 PetriNetUnfolderBase]: 2/66 cut-off events. [2023-08-23 23:12:06,225 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:12:06,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 36 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 47. Up to 2 conditions per place. [2023-08-23 23:12:06,229 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 68 transitions, 146 flow [2023-08-23 23:12:06,232 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 56 transitions, 118 flow [2023-08-23 23:12:06,234 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-23 23:12:06,263 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 56 transitions, 118 flow [2023-08-23 23:12:06,269 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 56 transitions, 118 flow [2023-08-23 23:12:06,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 56 transitions, 118 flow [2023-08-23 23:12:06,291 INFO L124 PetriNetUnfolderBase]: 1/56 cut-off events. [2023-08-23 23:12:06,291 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:12:06,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 56 events. 1/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 27 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-08-23 23:12:06,293 INFO L119 LiptonReduction]: Number of co-enabled transitions 540 [2023-08-23 23:12:08,041 INFO L134 LiptonReduction]: Checked pairs total: 1072 [2023-08-23 23:12:08,042 INFO L136 LiptonReduction]: Total number of compositions: 49 [2023-08-23 23:12:08,052 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-23 23:12:08,057 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;@1ce3b2ff, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-23 23:12:08,058 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-23 23:12:08,074 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-23 23:12:08,074 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-08-23 23:12:08,074 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-23 23:12:08,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:12:08,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-23 23:12:08,076 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-23 23:12:08,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:12:08,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1596367963, now seen corresponding path program 1 times [2023-08-23 23:12:08,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:12:08,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239786272] [2023-08-23 23:12:08,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:12:08,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:12:08,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:12:08,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:12:08,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:12:08,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239786272] [2023-08-23 23:12:08,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239786272] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:12:08,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:12:08,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-23 23:12:08,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512084798] [2023-08-23 23:12:08,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:12:08,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-23 23:12:08,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:12:08,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-23 23:12:08,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-23 23:12:08,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 117 [2023-08-23 23:12:08,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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) [2023-08-23 23:12:08,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:12:08,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 117 [2023-08-23 23:12:08,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:12:08,498 INFO L124 PetriNetUnfolderBase]: 16/46 cut-off events. [2023-08-23 23:12:08,499 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-23 23:12:08,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 46 events. 16/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 95 event pairs, 5 based on Foata normal form. 4/49 useless extension candidates. Maximal degree in co-relation 90. Up to 31 conditions per place. [2023-08-23 23:12:08,500 INFO L140 encePairwiseOnDemand]: 112/117 looper letters, 13 selfloop transitions, 3 changer transitions 0/18 dead transitions. [2023-08-23 23:12:08,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 18 transitions, 77 flow [2023-08-23 23:12:08,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-23 23:12:08,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-23 23:12:08,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 196 transitions. [2023-08-23 23:12:08,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5584045584045584 [2023-08-23 23:12:08,512 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 196 transitions. [2023-08-23 23:12:08,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 196 transitions. [2023-08-23 23:12:08,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:12:08,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 196 transitions. [2023-08-23 23:12:08,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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) [2023-08-23 23:12:08,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2023-08-23 23:12:08,521 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 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) [2023-08-23 23:12:08,522 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 32 flow. Second operand 3 states and 196 transitions. [2023-08-23 23:12:08,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 18 transitions, 77 flow [2023-08-23 23:12:08,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 74 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-23 23:12:08,526 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 47 flow [2023-08-23 23:12:08,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-08-23 23:12:08,530 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 1 predicate places. [2023-08-23 23:12:08,530 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 47 flow [2023-08-23 23:12:08,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.0) internal successors, (183), 3 states have internal predecessors, (183), 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) [2023-08-23 23:12:08,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:12:08,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:12:08,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-23 23:12:08,531 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-23 23:12:08,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:12:08,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1280414647, now seen corresponding path program 1 times [2023-08-23 23:12:08,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:12:08,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638640459] [2023-08-23 23:12:08,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:12:08,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:12:08,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:12:08,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:12:08,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:12:08,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638640459] [2023-08-23 23:12:08,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638640459] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:12:08,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:12:08,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:12:08,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142791597] [2023-08-23 23:12:08,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:12:08,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:12:08,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:12:08,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:12:08,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:12:08,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 117 [2023-08-23 23:12:08,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 47 flow. Second operand has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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) [2023-08-23 23:12:08,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:12:08,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 117 [2023-08-23 23:12:08,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:12:08,753 INFO L124 PetriNetUnfolderBase]: 8/30 cut-off events. [2023-08-23 23:12:08,753 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-23 23:12:08,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 30 events. 8/30 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 3 based on Foata normal form. 4/33 useless extension candidates. Maximal degree in co-relation 73. Up to 12 conditions per place. [2023-08-23 23:12:08,755 INFO L140 encePairwiseOnDemand]: 113/117 looper letters, 11 selfloop transitions, 5 changer transitions 0/18 dead transitions. [2023-08-23 23:12:08,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 18 transitions, 89 flow [2023-08-23 23:12:08,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-23 23:12:08,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-23 23:12:08,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 253 transitions. [2023-08-23 23:12:08,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5405982905982906 [2023-08-23 23:12:08,763 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 253 transitions. [2023-08-23 23:12:08,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 253 transitions. [2023-08-23 23:12:08,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:12:08,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 253 transitions. [2023-08-23 23:12:08,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.25) internal successors, (253), 4 states have internal predecessors, (253), 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) [2023-08-23 23:12:08,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 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) [2023-08-23 23:12:08,769 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 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) [2023-08-23 23:12:08,769 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 47 flow. Second operand 4 states and 253 transitions. [2023-08-23 23:12:08,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 18 transitions, 89 flow [2023-08-23 23:12:08,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 18 transitions, 86 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-23 23:12:08,770 INFO L231 Difference]: Finished difference. Result has 23 places, 14 transitions, 60 flow [2023-08-23 23:12:08,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=60, PETRI_PLACES=23, PETRI_TRANSITIONS=14} [2023-08-23 23:12:08,771 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 4 predicate places. [2023-08-23 23:12:08,771 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 14 transitions, 60 flow [2023-08-23 23:12:08,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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) [2023-08-23 23:12:08,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:12:08,773 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:12:08,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-23 23:12:08,779 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-23 23:12:08,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:12:08,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1935446159, now seen corresponding path program 1 times [2023-08-23 23:12:08,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:12:08,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573119837] [2023-08-23 23:12:08,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:12:08,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:12:08,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:12:08,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:12:08,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:12:08,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573119837] [2023-08-23 23:12:08,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573119837] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:12:08,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:12:08,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-23 23:12:08,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825092915] [2023-08-23 23:12:08,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:12:08,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-23 23:12:08,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:12:08,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-23 23:12:08,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-23 23:12:08,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 117 [2023-08-23 23:12:08,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 14 transitions, 60 flow. Second operand has 5 states, 5 states have (on average 58.4) internal successors, (292), 5 states have internal predecessors, (292), 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) [2023-08-23 23:12:08,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:12:08,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 117 [2023-08-23 23:12:08,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:12:09,014 INFO L124 PetriNetUnfolderBase]: 16/50 cut-off events. [2023-08-23 23:12:09,014 INFO L125 PetriNetUnfolderBase]: For 44/44 co-relation queries the response was YES. [2023-08-23 23:12:09,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 50 events. 16/50 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 110 event pairs, 6 based on Foata normal form. 1/51 useless extension candidates. Maximal degree in co-relation 142. Up to 20 conditions per place. [2023-08-23 23:12:09,015 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 14 selfloop transitions, 1 changer transitions 8/23 dead transitions. [2023-08-23 23:12:09,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 23 transitions, 153 flow [2023-08-23 23:12:09,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-23 23:12:09,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-23 23:12:09,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2023-08-23 23:12:09,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5213675213675214 [2023-08-23 23:12:09,017 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 244 transitions. [2023-08-23 23:12:09,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 244 transitions. [2023-08-23 23:12:09,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:12:09,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 244 transitions. [2023-08-23 23:12:09,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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) [2023-08-23 23:12:09,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 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) [2023-08-23 23:12:09,019 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 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) [2023-08-23 23:12:09,019 INFO L175 Difference]: Start difference. First operand has 23 places, 14 transitions, 60 flow. Second operand 4 states and 244 transitions. [2023-08-23 23:12:09,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 23 transitions, 153 flow [2023-08-23 23:12:09,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 23 transitions, 134 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-23 23:12:09,022 INFO L231 Difference]: Finished difference. Result has 26 places, 14 transitions, 57 flow [2023-08-23 23:12:09,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=57, PETRI_PLACES=26, PETRI_TRANSITIONS=14} [2023-08-23 23:12:09,023 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 7 predicate places. [2023-08-23 23:12:09,026 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 14 transitions, 57 flow [2023-08-23 23:12:09,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.4) internal successors, (292), 5 states have internal predecessors, (292), 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) [2023-08-23 23:12:09,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-23 23:12:09,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-23 23:12:09,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-23 23:12:09,027 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-23 23:12:09,027 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-23 23:12:09,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1198263261, now seen corresponding path program 2 times [2023-08-23 23:12:09,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-23 23:12:09,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034499411] [2023-08-23 23:12:09,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-23 23:12:09,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-23 23:12:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-23 23:12:09,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-23 23:12:09,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-23 23:12:09,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034499411] [2023-08-23 23:12:09,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034499411] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-23 23:12:09,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-23 23:12:09,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-23 23:12:09,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618015474] [2023-08-23 23:12:09,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-23 23:12:09,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-23 23:12:09,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-23 23:12:09,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-23 23:12:09,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-23 23:12:09,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 117 [2023-08-23 23:12:09,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 14 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2023-08-23 23:12:09,128 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-23 23:12:09,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 117 [2023-08-23 23:12:09,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-23 23:12:09,172 INFO L124 PetriNetUnfolderBase]: 11/39 cut-off events. [2023-08-23 23:12:09,172 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-08-23 23:12:09,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 39 events. 11/39 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 89 event pairs, 1 based on Foata normal form. 1/40 useless extension candidates. Maximal degree in co-relation 118. Up to 23 conditions per place. [2023-08-23 23:12:09,173 INFO L140 encePairwiseOnDemand]: 114/117 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-08-23 23:12:09,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 20 transitions, 124 flow [2023-08-23 23:12:09,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-23 23:12:09,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-23 23:12:09,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 243 transitions. [2023-08-23 23:12:09,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5192307692307693 [2023-08-23 23:12:09,174 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 243 transitions. [2023-08-23 23:12:09,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 243 transitions. [2023-08-23 23:12:09,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-23 23:12:09,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 243 transitions. [2023-08-23 23:12:09,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 60.75) internal successors, (243), 4 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) [2023-08-23 23:12:09,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 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) [2023-08-23 23:12:09,177 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 117.0) internal successors, (585), 5 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) [2023-08-23 23:12:09,177 INFO L175 Difference]: Start difference. First operand has 26 places, 14 transitions, 57 flow. Second operand 4 states and 243 transitions. [2023-08-23 23:12:09,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 20 transitions, 124 flow [2023-08-23 23:12:09,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 20 transitions, 122 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-23 23:12:09,178 INFO L231 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2023-08-23 23:12:09,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=117, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2023-08-23 23:12:09,179 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 7 predicate places. [2023-08-23 23:12:09,179 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2023-08-23 23:12:09,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2023-08-23 23:12:09,183 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-23 23:12:09,184 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-23 23:12:09,184 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-23 23:12:09,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-23 23:12:09,184 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2023-08-23 23:12:09,188 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-23 23:12:09,188 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-23 23:12:09,193 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.08 11:12:09 BasicIcfg [2023-08-23 23:12:09,193 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-23 23:12:09,196 INFO L158 Benchmark]: Toolchain (without parser) took 4095.70ms. Allocated memory was 398.5MB in the beginning and 507.5MB in the end (delta: 109.1MB). Free memory was 374.3MB in the beginning and 423.1MB in the end (delta: -48.8MB). Peak memory consumption was 63.1MB. Max. memory is 16.0GB. [2023-08-23 23:12:09,196 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 398.5MB. Free memory is still 375.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-23 23:12:09,196 INFO L158 Benchmark]: CACSL2BoogieTranslator took 466.74ms. Allocated memory is still 398.5MB. Free memory was 374.0MB in the beginning and 353.1MB in the end (delta: 20.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-23 23:12:09,197 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.22ms. Allocated memory is still 398.5MB. Free memory was 353.1MB in the beginning and 350.9MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-23 23:12:09,197 INFO L158 Benchmark]: Boogie Preprocessor took 32.57ms. Allocated memory is still 398.5MB. Free memory was 350.9MB in the beginning and 349.4MB in the end (delta: 1.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-23 23:12:09,197 INFO L158 Benchmark]: RCFGBuilder took 388.40ms. Allocated memory is still 398.5MB. Free memory was 349.4MB in the beginning and 336.5MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-23 23:12:09,201 INFO L158 Benchmark]: TraceAbstraction took 3144.25ms. Allocated memory was 398.5MB in the beginning and 507.5MB in the end (delta: 109.1MB). Free memory was 336.2MB in the beginning and 423.1MB in the end (delta: -86.9MB). Peak memory consumption was 25.3MB. Max. memory is 16.0GB. [2023-08-23 23:12:09,202 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 398.5MB. Free memory is still 375.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 466.74ms. Allocated memory is still 398.5MB. Free memory was 374.0MB in the beginning and 353.1MB in the end (delta: 20.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 58.22ms. Allocated memory is still 398.5MB. Free memory was 353.1MB in the beginning and 350.9MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 32.57ms. Allocated memory is still 398.5MB. Free memory was 350.9MB in the beginning and 349.4MB in the end (delta: 1.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * RCFGBuilder took 388.40ms. Allocated memory is still 398.5MB. Free memory was 349.4MB in the beginning and 336.5MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 3144.25ms. Allocated memory was 398.5MB in the beginning and 507.5MB in the end (delta: 109.1MB). Free memory was 336.2MB in the beginning and 423.1MB in the end (delta: -86.9MB). Peak memory consumption was 25.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 62 PlacesBefore, 19 PlacesAfterwards, 56 TransitionsBefore, 13 TransitionsAfterwards, 540 CoEnabledTransitionPairs, 6 FixpointIterations, 19 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 49 TotalNumberOfCompositions, 1072 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 636, independent: 567, independent conditional: 0, independent unconditional: 567, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 318, independent: 299, independent conditional: 0, independent unconditional: 299, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 636, independent: 268, independent conditional: 0, independent unconditional: 268, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 318, unknown conditional: 0, unknown unconditional: 318] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 20, Positive conditional cache size: 0, Positive unconditional cache size: 20, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: 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, 83 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: 3.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 22 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 22 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 127 IncrementalHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 5 mSDtfsCounter, 127 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=2, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 35 ConstructedInterpolants, 0 QuantifiedInterpolants, 121 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-23 23:12:09,219 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...