/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -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-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:35:14,162 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:35:14,229 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-SemanticLbe.epf [2023-11-17 11:35:14,267 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:35:14,268 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:35:14,268 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:35:14,273 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:35:14,273 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:35:14,274 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:35:14,277 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:35:14,278 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:35:14,278 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:35:14,278 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:35:14,279 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:35:14,280 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:35:14,280 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:35:14,280 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:35:14,280 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:35:14,280 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:35:14,281 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:35:14,281 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:35:14,281 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:35:14,282 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:35:14,282 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:35:14,282 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:35:14,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:35:14,282 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:35:14,283 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:35:14,283 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:35:14,283 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:35:14,284 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:35:14,284 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:35:14,284 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:35:14,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:35:14,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:35:14,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:35:14,537 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:35:14,537 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:35:14,539 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i [2023-11-17 11:35:15,720 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:35:15,933 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:35:15,934 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i [2023-11-17 11:35:15,946 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff3fb46c8/98bf3f8f3fc442809fdb2da094fe91dc/FLAG90257e754 [2023-11-17 11:35:15,958 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff3fb46c8/98bf3f8f3fc442809fdb2da094fe91dc [2023-11-17 11:35:15,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:35:15,962 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:35:15,963 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:35:15,963 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:35:15,967 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:35:15,968 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:35:15" (1/1) ... [2023-11-17 11:35:15,969 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b87af12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:35:15, skipping insertion in model container [2023-11-17 11:35:15,969 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:35:15" (1/1) ... [2023-11-17 11:35:16,013 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:35:16,150 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i[1105,1118] [2023-11-17 11:35:16,292 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:35:16,306 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:35:16,316 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_52-refine-protected-loop2-small_true.i[1105,1118] [2023-11-17 11:35:16,347 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:35:16,376 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:35:16,376 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:35:16 WrapperNode [2023-11-17 11:35:16,377 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:35:16,378 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:35:16,378 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:35:16,378 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:35:16,384 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:35:16" (1/1) ... [2023-11-17 11:35:16,395 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:35:16" (1/1) ... [2023-11-17 11:35:16,412 INFO L138 Inliner]: procedures = 163, calls = 28, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 68 [2023-11-17 11:35:16,412 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:35:16,413 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:35:16,413 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:35:16,415 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:35:16,422 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:35:16" (1/1) ... [2023-11-17 11:35:16,422 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:35:16" (1/1) ... [2023-11-17 11:35:16,425 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:35:16" (1/1) ... [2023-11-17 11:35:16,425 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:35:16" (1/1) ... [2023-11-17 11:35:16,432 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:35:16" (1/1) ... [2023-11-17 11:35:16,440 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:35:16" (1/1) ... [2023-11-17 11:35:16,441 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:35:16" (1/1) ... [2023-11-17 11:35:16,442 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:35:16" (1/1) ... [2023-11-17 11:35:16,445 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:35:16,453 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:35:16,453 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:35:16,453 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:35:16,454 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:35:16" (1/1) ... [2023-11-17 11:35:16,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:35:16,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:35:16,486 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) [2023-11-17 11:35:16,514 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 [2023-11-17 11:35:16,525 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2023-11-17 11:35:16,526 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2023-11-17 11:35:16,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:35:16,527 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 11:35:16,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:35:16,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:35:16,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:35:16,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:35:16,528 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-17 11:35:16,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:35:16,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:35:16,529 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 11:35:16,649 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:35:16,652 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:35:16,777 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:35:16,895 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:35:16,896 INFO L307 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-17 11:35:16,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:35:16 BoogieIcfgContainer [2023-11-17 11:35:16,897 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:35:16,899 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:35:16,899 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:35:16,902 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:35:16,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:35:15" (1/3) ... [2023-11-17 11:35:16,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2caee12b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:35:16, skipping insertion in model container [2023-11-17 11:35:16,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:35:16" (2/3) ... [2023-11-17 11:35:16,903 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2caee12b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:35:16, skipping insertion in model container [2023-11-17 11:35:16,903 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:35:16" (3/3) ... [2023-11-17 11:35:16,905 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_52-refine-protected-loop2-small_true.i [2023-11-17 11:35:16,921 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:35:16,921 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 11:35:16,922 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:35:16,967 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 11:35:17,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 22 places, 20 transitions, 44 flow [2023-11-17 11:35:17,037 INFO L124 PetriNetUnfolderBase]: 2/19 cut-off events. [2023-11-17 11:35:17,038 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:35:17,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23 conditions, 19 events. 2/19 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 9 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 17. Up to 2 conditions per place. [2023-11-17 11:35:17,041 INFO L82 GeneralOperation]: Start removeDead. Operand has 22 places, 20 transitions, 44 flow [2023-11-17 11:35:17,044 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 18 transitions, 39 flow [2023-11-17 11:35:17,047 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:35:17,067 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 20 places, 18 transitions, 39 flow [2023-11-17 11:35:17,070 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 20 places, 18 transitions, 39 flow [2023-11-17 11:35:17,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 20 places, 18 transitions, 39 flow [2023-11-17 11:35:17,077 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2023-11-17 11:35:17,077 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:35:17,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22 conditions, 18 events. 2/18 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 7 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 16. Up to 2 conditions per place. [2023-11-17 11:35:17,078 INFO L119 LiptonReduction]: Number of co-enabled transitions 30 [2023-11-17 11:35:17,887 INFO L134 LiptonReduction]: Checked pairs total: 18 [2023-11-17 11:35:17,887 INFO L136 LiptonReduction]: Total number of compositions: 19 [2023-11-17 11:35:17,914 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:35:17,919 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=LoopHeads, 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;@796bd313, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:35:17,920 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 11:35:17,922 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:35:17,923 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2023-11-17 11:35:17,923 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:35:17,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:35:17,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-17 11:35:17,924 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr0ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-17 11:35:17,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:35:17,928 INFO L85 PathProgramCache]: Analyzing trace with hash 6269361, now seen corresponding path program 1 times [2023-11-17 11:35:17,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:35:17,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842105628] [2023-11-17 11:35:17,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:35:17,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:35:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:35:18,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 11:35:18,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:35:18,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842105628] [2023-11-17 11:35:18,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842105628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:35:18,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:35:18,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:35:18,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826176716] [2023-11-17 11:35:18,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:35:18,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:35:18,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:35:18,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:35:18,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:35:18,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 39 [2023-11-17 11:35:18,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 9 places, 6 transitions, 15 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-11-17 11:35:18,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:35:18,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 39 [2023-11-17 11:35:18,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:35:18,319 INFO L124 PetriNetUnfolderBase]: 3/8 cut-off events. [2023-11-17 11:35:18,319 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:35:18,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 8 events. 3/8 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 5 event pairs, 0 based on Foata normal form. 0/8 useless extension candidates. Maximal degree in co-relation 12. Up to 5 conditions per place. [2023-11-17 11:35:18,321 INFO L140 encePairwiseOnDemand]: 37/39 looper letters, 0 selfloop transitions, 0 changer transitions 6/6 dead transitions. [2023-11-17 11:35:18,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 10 places, 6 transitions, 27 flow [2023-11-17 11:35:18,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:35:18,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:35:18,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 28 transitions. [2023-11-17 11:35:18,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.23931623931623933 [2023-11-17 11:35:18,333 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 28 transitions. [2023-11-17 11:35:18,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 28 transitions. [2023-11-17 11:35:18,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:35:18,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 28 transitions. [2023-11-17 11:35:18,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2023-11-17 11:35:18,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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) [2023-11-17 11:35:18,343 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 39.0) internal successors, (156), 4 states have internal predecessors, (156), 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) [2023-11-17 11:35:18,345 INFO L175 Difference]: Start difference. First operand has 9 places, 6 transitions, 15 flow. Second operand 3 states and 28 transitions. [2023-11-17 11:35:18,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 10 places, 6 transitions, 27 flow [2023-11-17 11:35:18,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 9 places, 6 transitions, 26 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:35:18,350 INFO L231 Difference]: Finished difference. Result has 9 places, 0 transitions, 0 flow [2023-11-17 11:35:18,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=39, PETRI_DIFFERENCE_MINUEND_FLOW=12, PETRI_DIFFERENCE_MINUEND_PLACES=7, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=9, PETRI_TRANSITIONS=0} [2023-11-17 11:35:18,355 INFO L281 CegarLoopForPetriNet]: 9 programPoint places, 0 predicate places. [2023-11-17 11:35:18,355 INFO L495 AbstractCegarLoop]: Abstraction has has 9 places, 0 transitions, 0 flow [2023-11-17 11:35:18,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2023-11-17 11:35:18,358 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-11-17 11:35:18,359 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-11-17 11:35:18,359 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-11-17 11:35:18,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:35:18,359 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-17 11:35:18,367 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:35:18,367 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:35:18,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:35:18 BasicIcfg [2023-11-17 11:35:18,378 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:35:18,379 INFO L158 Benchmark]: Toolchain (without parser) took 2416.42ms. Allocated memory is still 270.5MB. Free memory was 222.6MB in the beginning and 166.9MB in the end (delta: 55.7MB). Peak memory consumption was 57.3MB. Max. memory is 8.0GB. [2023-11-17 11:35:18,379 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 179.3MB. Free memory is still 128.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:35:18,379 INFO L158 Benchmark]: CACSL2BoogieTranslator took 413.66ms. Allocated memory is still 270.5MB. Free memory was 222.2MB in the beginning and 203.2MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-11-17 11:35:18,381 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.56ms. Allocated memory is still 270.5MB. Free memory was 203.2MB in the beginning and 201.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:35:18,382 INFO L158 Benchmark]: Boogie Preprocessor took 39.71ms. Allocated memory is still 270.5MB. Free memory was 201.2MB in the beginning and 199.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 11:35:18,386 INFO L158 Benchmark]: RCFGBuilder took 444.21ms. Allocated memory is still 270.5MB. Free memory was 199.8MB in the beginning and 176.7MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2023-11-17 11:35:18,387 INFO L158 Benchmark]: TraceAbstraction took 1478.89ms. Allocated memory is still 270.5MB. Free memory was 176.1MB in the beginning and 166.9MB in the end (delta: 9.2MB). Peak memory consumption was 10.1MB. Max. memory is 8.0GB. [2023-11-17 11:35:18,394 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 179.3MB. Free memory is still 128.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 413.66ms. Allocated memory is still 270.5MB. Free memory was 222.2MB in the beginning and 203.2MB in the end (delta: 19.0MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 34.56ms. Allocated memory is still 270.5MB. Free memory was 203.2MB in the beginning and 201.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 39.71ms. Allocated memory is still 270.5MB. Free memory was 201.2MB in the beginning and 199.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 444.21ms. Allocated memory is still 270.5MB. Free memory was 199.8MB in the beginning and 176.7MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. * TraceAbstraction took 1478.89ms. Allocated memory is still 270.5MB. Free memory was 176.1MB in the beginning and 166.9MB in the end (delta: 9.2MB). Peak memory consumption was 10.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.8s, 20 PlacesBefore, 9 PlacesAfterwards, 18 TransitionsBefore, 6 TransitionsAfterwards, 30 CoEnabledTransitionPairs, 5 FixpointIterations, 0 TrivialSequentialCompositions, 9 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 19 TotalNumberOfCompositions, 18 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 18, independent: 18, independent conditional: 0, independent unconditional: 18, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 17, independent: 17, independent conditional: 0, independent unconditional: 17, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 17, independent: 17, independent conditional: 0, independent unconditional: 17, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 18, independent: 1, independent conditional: 0, independent unconditional: 1, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 17, unknown conditional: 0, unknown unconditional: 17] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, 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: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 35 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9 IncrementalHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 0 mSDtfsCounter, 9 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 3, 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, 0.2s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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! [2023-11-17 11:35:18,418 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...