/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/04-mutex_04-munge_nr.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 04:40:22,274 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 04:40:22,360 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 [2023-08-27 04:40:22,366 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 04:40:22,367 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 04:40:22,394 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 04:40:22,395 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 04:40:22,395 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 04:40:22,396 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 04:40:22,399 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 04:40:22,399 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 04:40:22,400 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 04:40:22,400 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 04:40:22,401 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 04:40:22,401 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 04:40:22,402 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 04:40:22,402 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 04:40:22,402 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 04:40:22,402 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 04:40:22,402 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 04:40:22,403 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 04:40:22,403 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 04:40:22,403 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 04:40:22,404 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 04:40:22,404 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 04:40:22,404 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 04:40:22,405 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 04:40:22,405 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 04:40:22,405 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 04:40:22,405 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 04:40:22,406 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 04:40:22,407 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 04:40:22,407 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 04:40:22,407 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 04:40:22,407 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 04:40:22,407 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 04:40:22,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 04:40:22,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 04:40:22,739 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 04:40:22,740 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 04:40:22,742 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 04:40:22,743 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/04-mutex_04-munge_nr.i [2023-08-27 04:40:23,821 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 04:40:24,129 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 04:40:24,129 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/04-mutex_04-munge_nr.i [2023-08-27 04:40:24,145 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/251ab4710/d6260d92a3854c2fb7f0ca40bf417e0a/FLAG4c3acb898 [2023-08-27 04:40:24,157 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/251ab4710/d6260d92a3854c2fb7f0ca40bf417e0a [2023-08-27 04:40:24,159 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 04:40:24,160 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 04:40:24,163 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 04:40:24,163 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 04:40:24,166 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 04:40:24,166 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:40:24" (1/1) ... [2023-08-27 04:40:24,167 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aafecab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:40:24, skipping insertion in model container [2023-08-27 04:40:24,167 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:40:24" (1/1) ... [2023-08-27 04:40:24,206 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 04:40:24,645 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 04:40:24,659 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 04:40:24,693 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 04:40:24,695 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-27 04:40:24,701 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [736] [2023-08-27 04:40:24,710 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 04:40:24,768 INFO L206 MainTranslator]: Completed translation [2023-08-27 04:40:24,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:40:24 WrapperNode [2023-08-27 04:40:24,769 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 04:40:24,770 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 04:40:24,770 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 04:40:24,770 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 04:40:24,776 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:40:24" (1/1) ... [2023-08-27 04:40:24,806 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:40:24" (1/1) ... [2023-08-27 04:40:24,830 INFO L138 Inliner]: procedures = 263, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 48 [2023-08-27 04:40:24,831 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 04:40:24,832 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 04:40:24,832 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 04:40:24,832 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 04:40:24,839 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:40:24" (1/1) ... [2023-08-27 04:40:24,839 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:40:24" (1/1) ... [2023-08-27 04:40:24,851 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:40:24" (1/1) ... [2023-08-27 04:40:24,852 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:40:24" (1/1) ... [2023-08-27 04:40:24,860 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:40:24" (1/1) ... [2023-08-27 04:40:24,861 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:40:24" (1/1) ... [2023-08-27 04:40:24,863 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:40:24" (1/1) ... [2023-08-27 04:40:24,863 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:40:24" (1/1) ... [2023-08-27 04:40:24,865 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 04:40:24,866 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 04:40:24,866 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 04:40:24,866 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 04:40:24,867 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:40:24" (1/1) ... [2023-08-27 04:40:24,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 04:40:24,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:40:24,903 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) [2023-08-27 04:40:24,925 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 [2023-08-27 04:40:24,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 04:40:24,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 04:40:24,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 04:40:24,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 04:40:24,946 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 04:40:24,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 04:40:24,946 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-27 04:40:24,946 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-27 04:40:24,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 04:40:24,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 04:40:24,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 04:40:24,948 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 04:40:25,088 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 04:40:25,090 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 04:40:25,258 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 04:40:25,265 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 04:40:25,266 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 04:40:25,268 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:40:25 BoogieIcfgContainer [2023-08-27 04:40:25,268 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 04:40:25,271 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 04:40:25,271 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 04:40:25,274 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 04:40:25,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 04:40:24" (1/3) ... [2023-08-27 04:40:25,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c18284a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:40:25, skipping insertion in model container [2023-08-27 04:40:25,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:40:24" (2/3) ... [2023-08-27 04:40:25,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c18284a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:40:25, skipping insertion in model container [2023-08-27 04:40:25,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:40:25" (3/3) ... [2023-08-27 04:40:25,277 INFO L112 eAbstractionObserver]: Analyzing ICFG 04-mutex_04-munge_nr.i [2023-08-27 04:40:25,293 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 04:40:25,293 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-27 04:40:25,294 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 04:40:25,368 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-27 04:40:25,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 55 transitions, 118 flow [2023-08-27 04:40:25,426 INFO L124 PetriNetUnfolderBase]: 0/54 cut-off events. [2023-08-27 04:40:25,426 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 04:40:25,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 54 events. 0/54 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-27 04:40:25,434 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 55 transitions, 118 flow [2023-08-27 04:40:25,439 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 47 transitions, 97 flow [2023-08-27 04:40:25,443 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 04:40:25,454 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 47 transitions, 97 flow [2023-08-27 04:40:25,458 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 47 transitions, 97 flow [2023-08-27 04:40:25,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 51 places, 47 transitions, 97 flow [2023-08-27 04:40:25,485 INFO L124 PetriNetUnfolderBase]: 0/47 cut-off events. [2023-08-27 04:40:25,485 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 04:40:25,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 47 events. 0/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-27 04:40:25,486 INFO L119 LiptonReduction]: Number of co-enabled transitions 420 [2023-08-27 04:40:26,719 INFO L134 LiptonReduction]: Checked pairs total: 1287 [2023-08-27 04:40:26,720 INFO L136 LiptonReduction]: Total number of compositions: 33 [2023-08-27 04:40:26,740 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 04:40:26,748 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;@5e5595b9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 04:40:26,748 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-27 04:40:26,754 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 04:40:26,754 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-08-27 04:40:26,754 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 04:40:26,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:40:26,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 04:40:26,756 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-27 04:40:26,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:40:26,767 INFO L85 PathProgramCache]: Analyzing trace with hash 5846992, now seen corresponding path program 1 times [2023-08-27 04:40:26,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:40:26,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097140702] [2023-08-27 04:40:26,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:40:26,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:40:26,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:40:26,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:40:26,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:40:26,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097140702] [2023-08-27 04:40:26,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097140702] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:40:26,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:40:26,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 04:40:26,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031538883] [2023-08-27 04:40:26,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:40:26,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 04:40:26,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:40:26,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 04:40:26,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 04:40:26,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 88 [2023-08-27 04:40:27,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 16 transitions, 35 flow. Second operand has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2023-08-27 04:40:27,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:40:27,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 88 [2023-08-27 04:40:27,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:40:27,067 INFO L124 PetriNetUnfolderBase]: 29/74 cut-off events. [2023-08-27 04:40:27,067 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 04:40:27,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 74 events. 29/74 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 198 event pairs, 15 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 144. Up to 49 conditions per place. [2023-08-27 04:40:27,071 INFO L140 encePairwiseOnDemand]: 81/88 looper letters, 17 selfloop transitions, 3 changer transitions 4/24 dead transitions. [2023-08-27 04:40:27,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 24 transitions, 99 flow [2023-08-27 04:40:27,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 04:40:27,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 04:40:27,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2023-08-27 04:40:27,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2023-08-27 04:40:27,085 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 154 transitions. [2023-08-27 04:40:27,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 154 transitions. [2023-08-27 04:40:27,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:40:27,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 154 transitions. [2023-08-27 04:40:27,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2023-08-27 04:40:27,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 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) [2023-08-27 04:40:27,094 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 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) [2023-08-27 04:40:27,095 INFO L175 Difference]: Start difference. First operand has 20 places, 16 transitions, 35 flow. Second operand 3 states and 154 transitions. [2023-08-27 04:40:27,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 24 transitions, 99 flow [2023-08-27 04:40:27,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 24 transitions, 98 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 04:40:27,099 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 51 flow [2023-08-27 04:40:27,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=51, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2023-08-27 04:40:27,104 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 2 predicate places. [2023-08-27 04:40:27,104 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 51 flow [2023-08-27 04:40:27,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2023-08-27 04:40:27,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:40:27,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:40:27,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 04:40:27,105 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-27 04:40:27,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:40:27,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1063274708, now seen corresponding path program 1 times [2023-08-27 04:40:27,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:40:27,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981569128] [2023-08-27 04:40:27,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:40:27,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:40:27,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:40:27,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:40:27,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:40:27,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981569128] [2023-08-27 04:40:27,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981569128] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:40:27,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:40:27,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 04:40:27,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721113255] [2023-08-27 04:40:27,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:40:27,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 04:40:27,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:40:27,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 04:40:27,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 04:40:27,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 88 [2023-08-27 04:40:27,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 51 flow. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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) [2023-08-27 04:40:27,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:40:27,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 88 [2023-08-27 04:40:27,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:40:27,326 INFO L124 PetriNetUnfolderBase]: 0/22 cut-off events. [2023-08-27 04:40:27,327 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 04:40:27,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 22 events. 0/22 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 34 event pairs, 0 based on Foata normal form. 4/26 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2023-08-27 04:40:27,327 INFO L140 encePairwiseOnDemand]: 84/88 looper letters, 6 selfloop transitions, 4 changer transitions 0/16 dead transitions. [2023-08-27 04:40:27,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 16 transitions, 71 flow [2023-08-27 04:40:27,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 04:40:27,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 04:40:27,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 135 transitions. [2023-08-27 04:40:27,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5113636363636364 [2023-08-27 04:40:27,329 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 135 transitions. [2023-08-27 04:40:27,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 135 transitions. [2023-08-27 04:40:27,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:40:27,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 135 transitions. [2023-08-27 04:40:27,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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) [2023-08-27 04:40:27,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 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) [2023-08-27 04:40:27,332 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 88.0) internal successors, (352), 4 states have internal predecessors, (352), 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) [2023-08-27 04:40:27,332 INFO L175 Difference]: Start difference. First operand has 22 places, 16 transitions, 51 flow. Second operand 3 states and 135 transitions. [2023-08-27 04:40:27,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 16 transitions, 71 flow [2023-08-27 04:40:27,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 16 transitions, 68 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 04:40:27,333 INFO L231 Difference]: Finished difference. Result has 23 places, 16 transitions, 56 flow [2023-08-27 04:40:27,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=23, PETRI_TRANSITIONS=16} [2023-08-27 04:40:27,334 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 3 predicate places. [2023-08-27 04:40:27,334 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 16 transitions, 56 flow [2023-08-27 04:40:27,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 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) [2023-08-27 04:40:27,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:40:27,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:40:27,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 04:40:27,335 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-27 04:40:27,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:40:27,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1887588689, now seen corresponding path program 1 times [2023-08-27 04:40:27,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:40:27,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394673973] [2023-08-27 04:40:27,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:40:27,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:40:27,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:40:27,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:40:27,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:40:27,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394673973] [2023-08-27 04:40:27,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394673973] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:40:27,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:40:27,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 04:40:27,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759846812] [2023-08-27 04:40:27,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:40:27,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 04:40:27,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:40:27,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 04:40:27,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 04:40:27,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 88 [2023-08-27 04:40:27,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 16 transitions, 56 flow. Second operand has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 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) [2023-08-27 04:40:27,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:40:27,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 88 [2023-08-27 04:40:27,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:40:27,420 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2023-08-27 04:40:27,420 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 04:40:27,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 20 events. 0/20 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 21 event pairs, 0 based on Foata normal form. 2/22 useless extension candidates. Maximal degree in co-relation 0. Up to 12 conditions per place. [2023-08-27 04:40:27,421 INFO L140 encePairwiseOnDemand]: 83/88 looper letters, 15 selfloop transitions, 3 changer transitions 2/20 dead transitions. [2023-08-27 04:40:27,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 20 transitions, 104 flow [2023-08-27 04:40:27,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 04:40:27,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 04:40:27,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 190 transitions. [2023-08-27 04:40:27,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5397727272727273 [2023-08-27 04:40:27,423 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 190 transitions. [2023-08-27 04:40:27,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 190 transitions. [2023-08-27 04:40:27,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:40:27,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 190 transitions. [2023-08-27 04:40:27,425 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 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) [2023-08-27 04:40:27,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 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) [2023-08-27 04:40:27,426 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 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) [2023-08-27 04:40:27,426 INFO L175 Difference]: Start difference. First operand has 23 places, 16 transitions, 56 flow. Second operand 4 states and 190 transitions. [2023-08-27 04:40:27,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 20 transitions, 104 flow [2023-08-27 04:40:27,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 20 transitions, 98 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 04:40:27,428 INFO L231 Difference]: Finished difference. Result has 23 places, 14 transitions, 50 flow [2023-08-27 04:40:27,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=50, PETRI_PLACES=23, PETRI_TRANSITIONS=14} [2023-08-27 04:40:27,432 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 3 predicate places. [2023-08-27 04:40:27,432 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 14 transitions, 50 flow [2023-08-27 04:40:27,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.25) internal successors, (177), 4 states have internal predecessors, (177), 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) [2023-08-27 04:40:27,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:40:27,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:40:27,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 04:40:27,433 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-27 04:40:27,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:40:27,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1614292936, now seen corresponding path program 1 times [2023-08-27 04:40:27,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:40:27,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509533521] [2023-08-27 04:40:27,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:40:27,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:40:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:40:27,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:40:27,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:40:27,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509533521] [2023-08-27 04:40:27,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509533521] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:40:27,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:40:27,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 04:40:27,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641040321] [2023-08-27 04:40:27,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:40:27,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 04:40:27,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:40:27,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 04:40:27,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 04:40:27,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 88 [2023-08-27 04:40:27,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 14 transitions, 50 flow. Second operand has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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) [2023-08-27 04:40:27,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:40:27,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 88 [2023-08-27 04:40:27,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:40:27,511 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2023-08-27 04:40:27,512 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 04:40:27,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 18 events. 0/18 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 15 event pairs, 0 based on Foata normal form. 2/20 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2023-08-27 04:40:27,512 INFO L140 encePairwiseOnDemand]: 83/88 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2023-08-27 04:40:27,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 18 transitions, 92 flow [2023-08-27 04:40:27,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 04:40:27,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 04:40:27,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 188 transitions. [2023-08-27 04:40:27,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5340909090909091 [2023-08-27 04:40:27,514 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 188 transitions. [2023-08-27 04:40:27,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 188 transitions. [2023-08-27 04:40:27,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:40:27,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 188 transitions. [2023-08-27 04:40:27,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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) [2023-08-27 04:40:27,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 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) [2023-08-27 04:40:27,517 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 88.0) internal successors, (440), 5 states have internal predecessors, (440), 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) [2023-08-27 04:40:27,517 INFO L175 Difference]: Start difference. First operand has 23 places, 14 transitions, 50 flow. Second operand 4 states and 188 transitions. [2023-08-27 04:40:27,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 18 transitions, 92 flow [2023-08-27 04:40:27,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 18 transitions, 85 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 04:40:27,518 INFO L231 Difference]: Finished difference. Result has 21 places, 0 transitions, 0 flow [2023-08-27 04:40:27,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=88, PETRI_DIFFERENCE_MINUEND_FLOW=35, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=21, PETRI_TRANSITIONS=0} [2023-08-27 04:40:27,519 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 1 predicate places. [2023-08-27 04:40:27,520 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 0 transitions, 0 flow [2023-08-27 04:40:27,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.5) internal successors, (178), 4 states have internal predecessors, (178), 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) [2023-08-27 04:40:27,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 7 remaining) [2023-08-27 04:40:27,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 7 remaining) [2023-08-27 04:40:27,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-08-27 04:40:27,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 7 remaining) [2023-08-27 04:40:27,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 7 remaining) [2023-08-27 04:40:27,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 7 remaining) [2023-08-27 04:40:27,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 7 remaining) [2023-08-27 04:40:27,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 04:40:27,524 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-27 04:40:27,529 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 04:40:27,529 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 04:40:27,532 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 04:40:27 BasicIcfg [2023-08-27 04:40:27,532 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 04:40:27,533 INFO L158 Benchmark]: Toolchain (without parser) took 3372.41ms. Allocated memory was 369.1MB in the beginning and 461.4MB in the end (delta: 92.3MB). Free memory was 344.0MB in the beginning and 348.4MB in the end (delta: -4.4MB). Peak memory consumption was 88.5MB. Max. memory is 16.0GB. [2023-08-27 04:40:27,533 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 369.1MB. Free memory is still 346.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 04:40:27,534 INFO L158 Benchmark]: CACSL2BoogieTranslator took 605.98ms. Allocated memory is still 369.1MB. Free memory was 343.5MB in the beginning and 316.7MB in the end (delta: 26.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-27 04:40:27,534 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.21ms. Allocated memory is still 369.1MB. Free memory was 316.7MB in the beginning and 314.6MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-27 04:40:27,535 INFO L158 Benchmark]: Boogie Preprocessor took 33.25ms. Allocated memory is still 369.1MB. Free memory was 314.6MB in the beginning and 313.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 04:40:27,535 INFO L158 Benchmark]: RCFGBuilder took 402.42ms. Allocated memory is still 369.1MB. Free memory was 313.1MB in the beginning and 300.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 04:40:27,536 INFO L158 Benchmark]: TraceAbstraction took 2261.15ms. Allocated memory was 369.1MB in the beginning and 461.4MB in the end (delta: 92.3MB). Free memory was 300.0MB in the beginning and 348.4MB in the end (delta: -48.4MB). Peak memory consumption was 44.4MB. Max. memory is 16.0GB. [2023-08-27 04:40:27,538 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 369.1MB. Free memory is still 346.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 605.98ms. Allocated memory is still 369.1MB. Free memory was 343.5MB in the beginning and 316.7MB in the end (delta: 26.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 61.21ms. Allocated memory is still 369.1MB. Free memory was 316.7MB in the beginning and 314.6MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 33.25ms. Allocated memory is still 369.1MB. Free memory was 314.6MB in the beginning and 313.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 402.42ms. Allocated memory is still 369.1MB. Free memory was 313.1MB in the beginning and 300.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 2261.15ms. Allocated memory was 369.1MB in the beginning and 461.4MB in the end (delta: 92.3MB). Free memory was 300.0MB in the beginning and 348.4MB in the end (delta: -48.4MB). Peak memory consumption was 44.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 736]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [736] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.3s, 51 PlacesBefore, 20 PlacesAfterwards, 47 TransitionsBefore, 16 TransitionsAfterwards, 420 CoEnabledTransitionPairs, 5 FixpointIterations, 16 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 33 TotalNumberOfCompositions, 1287 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 763, independent: 633, independent conditional: 0, independent unconditional: 633, dependent: 130, dependent conditional: 0, dependent unconditional: 130, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 221, independent: 204, independent conditional: 0, independent unconditional: 204, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 763, independent: 429, independent conditional: 0, independent unconditional: 429, dependent: 113, dependent conditional: 0, dependent unconditional: 113, unknown: 221, unknown conditional: 0, unknown unconditional: 221] , Statistics on independence cache: Total cache size (in pairs): 45, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 921]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 921]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 921]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 921]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 72 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 28 mSDsluCounter, 2 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 104 IncrementalHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 2 mSDtfsCounter, 104 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=2, InterpolantAutomatonStates: 14, 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, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 73 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 04:40:27,553 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...