/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/weaver/chl-sre-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 06:32:01,800 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 06:32:01,876 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 06:32:01,883 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 06:32:01,884 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 06:32:01,913 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 06:32:01,914 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 06:32:01,914 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 06:32:01,915 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 06:32:01,918 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 06:32:01,918 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 06:32:01,918 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 06:32:01,919 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 06:32:01,920 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 06:32:01,920 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 06:32:01,920 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 06:32:01,920 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 06:32:01,921 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 06:32:01,921 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 06:32:01,921 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 06:32:01,921 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 06:32:01,922 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 06:32:01,922 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 06:32:01,923 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 06:32:01,923 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 06:32:01,923 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 06:32:01,923 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 06:32:01,923 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 06:32:01,924 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 06:32:01,924 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 06:32:01,925 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 06:32:01,925 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 06:32:01,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 06:32:01,925 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 06:32:01,925 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 06:32:01,926 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 06:32:02,205 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 06:32:02,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 06:32:02,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 06:32:02,230 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 06:32:02,230 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 06:32:02,231 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-sre-trans.wvr.c [2023-08-27 06:32:03,392 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 06:32:03,580 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 06:32:03,581 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-sre-trans.wvr.c [2023-08-27 06:32:03,586 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37d64d517/7a3a74857ed44bef9e5d7f5498dee8ef/FLAGadee7f9af [2023-08-27 06:32:03,596 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37d64d517/7a3a74857ed44bef9e5d7f5498dee8ef [2023-08-27 06:32:03,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 06:32:03,599 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 06:32:03,600 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 06:32:03,600 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 06:32:03,602 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 06:32:03,603 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:32:03" (1/1) ... [2023-08-27 06:32:03,604 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79472bd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:32:03, skipping insertion in model container [2023-08-27 06:32:03,604 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:32:03" (1/1) ... [2023-08-27 06:32:03,622 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 06:32:03,809 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 06:32:03,822 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 06:32:03,857 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 06:32:03,870 INFO L206 MainTranslator]: Completed translation [2023-08-27 06:32:03,871 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:32:03 WrapperNode [2023-08-27 06:32:03,871 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 06:32:03,872 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 06:32:03,872 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 06:32:03,872 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 06:32:03,878 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:32:03" (1/1) ... [2023-08-27 06:32:03,892 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:32:03" (1/1) ... [2023-08-27 06:32:03,915 INFO L138 Inliner]: procedures = 22, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 75 [2023-08-27 06:32:03,916 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 06:32:03,917 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 06:32:03,917 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 06:32:03,917 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 06:32:03,926 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:32:03" (1/1) ... [2023-08-27 06:32:03,926 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:32:03" (1/1) ... [2023-08-27 06:32:03,931 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:32:03" (1/1) ... [2023-08-27 06:32:03,931 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:32:03" (1/1) ... [2023-08-27 06:32:03,936 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:32:03" (1/1) ... [2023-08-27 06:32:03,937 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:32:03" (1/1) ... [2023-08-27 06:32:03,938 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:32:03" (1/1) ... [2023-08-27 06:32:03,939 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:32:03" (1/1) ... [2023-08-27 06:32:03,944 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 06:32:03,945 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 06:32:03,945 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 06:32:03,946 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 06:32:03,946 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:32:03" (1/1) ... [2023-08-27 06:32:03,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 06:32:03,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:32:03,978 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 06:32:04,001 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 06:32:04,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 06:32:04,018 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 06:32:04,018 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 06:32:04,018 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 06:32:04,018 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 06:32:04,019 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 06:32:04,019 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 06:32:04,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 06:32:04,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 06:32:04,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 06:32:04,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 06:32:04,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 06:32:04,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 06:32:04,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 06:32:04,021 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 06:32:04,122 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 06:32:04,124 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 06:32:04,335 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 06:32:04,341 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 06:32:04,341 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 06:32:04,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:32:04 BoogieIcfgContainer [2023-08-27 06:32:04,343 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 06:32:04,345 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 06:32:04,346 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 06:32:04,348 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 06:32:04,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 06:32:03" (1/3) ... [2023-08-27 06:32:04,349 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f458e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:32:04, skipping insertion in model container [2023-08-27 06:32:04,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:32:03" (2/3) ... [2023-08-27 06:32:04,349 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f458e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:32:04, skipping insertion in model container [2023-08-27 06:32:04,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:32:04" (3/3) ... [2023-08-27 06:32:04,351 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-sre-trans.wvr.c [2023-08-27 06:32:04,366 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 06:32:04,366 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-27 06:32:04,366 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 06:32:04,450 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 06:32:04,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 85 transitions, 194 flow [2023-08-27 06:32:04,535 INFO L124 PetriNetUnfolderBase]: 1/82 cut-off events. [2023-08-27 06:32:04,535 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 06:32:04,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 82 events. 1/82 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 20 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2023-08-27 06:32:04,539 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 85 transitions, 194 flow [2023-08-27 06:32:04,542 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 71 transitions, 160 flow [2023-08-27 06:32:04,545 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 06:32:04,554 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 71 transitions, 160 flow [2023-08-27 06:32:04,556 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 71 transitions, 160 flow [2023-08-27 06:32:04,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 71 transitions, 160 flow [2023-08-27 06:32:04,588 INFO L124 PetriNetUnfolderBase]: 1/71 cut-off events. [2023-08-27 06:32:04,588 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 06:32:04,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84 conditions, 71 events. 1/71 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 19 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2023-08-27 06:32:04,590 INFO L119 LiptonReduction]: Number of co-enabled transitions 270 [2023-08-27 06:32:06,995 INFO L134 LiptonReduction]: Checked pairs total: 323 [2023-08-27 06:32:06,995 INFO L136 LiptonReduction]: Total number of compositions: 60 [2023-08-27 06:32:07,008 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 06:32:07,014 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;@51aa4d13, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 06:32:07,014 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-27 06:32:07,020 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 06:32:07,020 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-08-27 06:32:07,021 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 06:32:07,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:32:07,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:32:07,022 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:32:07,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:32:07,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1215582655, now seen corresponding path program 1 times [2023-08-27 06:32:07,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:32:07,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594463545] [2023-08-27 06:32:07,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:32:07,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:32:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:32:07,772 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 06:32:07,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:32:07,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594463545] [2023-08-27 06:32:07,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594463545] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:32:07,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:32:07,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 06:32:07,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453392730] [2023-08-27 06:32:07,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:32:07,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 06:32:07,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:32:07,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 06:32:07,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 06:32:07,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 145 [2023-08-27 06:32:07,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 50 flow. Second operand has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 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 06:32:07,807 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:32:07,807 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 145 [2023-08-27 06:32:07,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:32:07,912 INFO L124 PetriNetUnfolderBase]: 41/99 cut-off events. [2023-08-27 06:32:07,912 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-27 06:32:07,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 99 events. 41/99 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 282 event pairs, 17 based on Foata normal form. 1/100 useless extension candidates. Maximal degree in co-relation 168. Up to 51 conditions per place. [2023-08-27 06:32:07,915 INFO L140 encePairwiseOnDemand]: 141/145 looper letters, 18 selfloop transitions, 2 changer transitions 8/28 dead transitions. [2023-08-27 06:32:07,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 28 transitions, 145 flow [2023-08-27 06:32:07,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 06:32:07,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 06:32:07,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 297 transitions. [2023-08-27 06:32:07,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5120689655172413 [2023-08-27 06:32:07,936 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 297 transitions. [2023-08-27 06:32:07,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 297 transitions. [2023-08-27 06:32:07,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:32:07,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 297 transitions. [2023-08-27 06:32:07,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 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 06:32:07,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 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 06:32:07,948 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 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 06:32:07,949 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 50 flow. Second operand 4 states and 297 transitions. [2023-08-27 06:32:07,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 28 transitions, 145 flow [2023-08-27 06:32:07,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 28 transitions, 123 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 06:32:07,953 INFO L231 Difference]: Finished difference. Result has 25 places, 16 transitions, 49 flow [2023-08-27 06:32:07,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=49, PETRI_PLACES=25, PETRI_TRANSITIONS=16} [2023-08-27 06:32:07,958 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2023-08-27 06:32:07,958 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 16 transitions, 49 flow [2023-08-27 06:32:07,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 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 06:32:07,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:32:07,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:32:07,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 06:32:07,963 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-27 06:32:07,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:32:07,963 INFO L85 PathProgramCache]: Analyzing trace with hash 348555727, now seen corresponding path program 2 times [2023-08-27 06:32:07,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:32:07,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637994768] [2023-08-27 06:32:07,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:32:07,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:32:07,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:32:08,240 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 06:32:08,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:32:08,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637994768] [2023-08-27 06:32:08,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637994768] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:32:08,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:32:08,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 06:32:08,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927898442] [2023-08-27 06:32:08,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:32:08,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 06:32:08,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:32:08,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 06:32:08,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:32:08,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 145 [2023-08-27 06:32:08,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 16 transitions, 49 flow. Second operand has 5 states, 5 states have (on average 70.2) internal successors, (351), 5 states have internal predecessors, (351), 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 06:32:08,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:32:08,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 145 [2023-08-27 06:32:08,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:32:08,365 INFO L124 PetriNetUnfolderBase]: 27/69 cut-off events. [2023-08-27 06:32:08,365 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2023-08-27 06:32:08,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 69 events. 27/69 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 153 event pairs, 11 based on Foata normal form. 1/70 useless extension candidates. Maximal degree in co-relation 52. Up to 32 conditions per place. [2023-08-27 06:32:08,367 INFO L140 encePairwiseOnDemand]: 141/145 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2023-08-27 06:32:08,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 26 transitions, 126 flow [2023-08-27 06:32:08,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 06:32:08,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 06:32:08,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 362 transitions. [2023-08-27 06:32:08,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4993103448275862 [2023-08-27 06:32:08,370 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 362 transitions. [2023-08-27 06:32:08,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 362 transitions. [2023-08-27 06:32:08,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:32:08,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 362 transitions. [2023-08-27 06:32:08,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 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 06:32:08,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 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 06:32:08,378 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 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 06:32:08,379 INFO L175 Difference]: Start difference. First operand has 25 places, 16 transitions, 49 flow. Second operand 5 states and 362 transitions. [2023-08-27 06:32:08,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 26 transitions, 126 flow [2023-08-27 06:32:08,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 26 transitions, 119 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 06:32:08,380 INFO L231 Difference]: Finished difference. Result has 25 places, 0 transitions, 0 flow [2023-08-27 06:32:08,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=25, PETRI_TRANSITIONS=0} [2023-08-27 06:32:08,381 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2023-08-27 06:32:08,381 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 0 transitions, 0 flow [2023-08-27 06:32:08,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.2) internal successors, (351), 5 states have internal predecessors, (351), 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 06:32:08,383 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2023-08-27 06:32:08,384 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-27 06:32:08,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-27 06:32:08,386 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-27 06:32:08,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 06:32:08,389 INFO L445 BasicCegarLoop]: Path program histogram: [2] [2023-08-27 06:32:08,394 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 06:32:08,394 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 06:32:08,404 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 06:32:08 BasicIcfg [2023-08-27 06:32:08,405 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 06:32:08,407 INFO L158 Benchmark]: Toolchain (without parser) took 4806.55ms. Allocated memory is still 373.3MB. Free memory was 329.3MB in the beginning and 164.5MB in the end (delta: 164.9MB). Peak memory consumption was 165.9MB. Max. memory is 16.0GB. [2023-08-27 06:32:08,407 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 373.3MB. Free memory was 351.2MB in the beginning and 351.1MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 06:32:08,408 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.11ms. Allocated memory is still 373.3MB. Free memory was 329.3MB in the beginning and 318.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-27 06:32:08,410 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.74ms. Allocated memory is still 373.3MB. Free memory was 318.9MB in the beginning and 316.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 06:32:08,410 INFO L158 Benchmark]: Boogie Preprocessor took 27.80ms. Allocated memory is still 373.3MB. Free memory was 316.8MB in the beginning and 315.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 06:32:08,412 INFO L158 Benchmark]: RCFGBuilder took 397.65ms. Allocated memory is still 373.3MB. Free memory was 315.7MB in the beginning and 302.1MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-27 06:32:08,413 INFO L158 Benchmark]: TraceAbstraction took 4059.64ms. Allocated memory is still 373.3MB. Free memory was 302.1MB in the beginning and 164.5MB in the end (delta: 137.6MB). Peak memory consumption was 138.7MB. Max. memory is 16.0GB. [2023-08-27 06:32:08,416 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 373.3MB. Free memory was 351.2MB in the beginning and 351.1MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 271.11ms. Allocated memory is still 373.3MB. Free memory was 329.3MB in the beginning and 318.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 43.74ms. Allocated memory is still 373.3MB. Free memory was 318.9MB in the beginning and 316.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.80ms. Allocated memory is still 373.3MB. Free memory was 316.8MB in the beginning and 315.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 397.65ms. Allocated memory is still 373.3MB. Free memory was 315.7MB in the beginning and 302.1MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4059.64ms. Allocated memory is still 373.3MB. Free memory was 302.1MB in the beginning and 164.5MB in the end (delta: 137.6MB). Peak memory consumption was 138.7MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 80 PlacesBefore, 26 PlacesAfterwards, 71 TransitionsBefore, 16 TransitionsAfterwards, 270 CoEnabledTransitionPairs, 6 FixpointIterations, 38 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 60 TotalNumberOfCompositions, 323 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 323, independent: 323, independent conditional: 0, independent unconditional: 323, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 149, independent: 149, independent conditional: 0, independent unconditional: 149, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 323, independent: 174, independent conditional: 0, independent unconditional: 174, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 149, unknown conditional: 0, unknown unconditional: 149] , Statistics on independence cache: Total cache size (in pairs): 18, Positive cache size: 18, Positive conditional cache size: 0, Positive unconditional cache size: 18, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 21]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 100 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.9s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 58 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 58 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 76 IncrementalHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 76 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=0, InterpolantAutomatonStates: 9, 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, 0.8s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 376 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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! [2023-08-27 06:32:08,435 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...