./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-race-challenges/atomic-gcc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-race-challenges/atomic-gcc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e871b2733ca48641b94165aca85ae57dbaeb869d27034829a9a99745860b5f9f --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 11:16:26,235 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 11:16:26,277 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-03-17 11:16:26,281 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 11:16:26,281 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 11:16:26,304 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 11:16:26,305 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 11:16:26,306 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 11:16:26,307 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 11:16:26,307 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 11:16:26,307 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 11:16:26,307 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 11:16:26,307 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 11:16:26,307 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 11:16:26,307 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 11:16:26,307 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 11:16:26,308 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 11:16:26,308 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 11:16:26,308 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 11:16:26,308 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 11:16:26,308 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 11:16:26,308 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 11:16:26,308 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-03-17 11:16:26,308 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 11:16:26,308 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 11:16:26,308 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 11:16:26,308 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 11:16:26,308 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 11:16:26,309 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 11:16:26,309 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 11:16:26,309 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 11:16:26,309 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 11:16:26,309 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 11:16:26,309 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 11:16:26,309 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 11:16:26,309 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 11:16:26,309 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 11:16:26,309 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 11:16:26,309 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 11:16:26,309 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 11:16:26,309 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 11:16:26,310 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 11:16:26,310 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e871b2733ca48641b94165aca85ae57dbaeb869d27034829a9a99745860b5f9f [2025-03-17 11:16:26,508 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 11:16:26,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 11:16:26,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 11:16:26,518 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 11:16:26,518 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 11:16:26,519 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-race-challenges/atomic-gcc.i [2025-03-17 11:16:27,677 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01c3bb2de/2e08e4f60ad941818a9a66da92c15efb/FLAG68cf0fd30 [2025-03-17 11:16:27,967 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 11:16:27,969 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-race-challenges/atomic-gcc.i [2025-03-17 11:16:27,988 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01c3bb2de/2e08e4f60ad941818a9a66da92c15efb/FLAG68cf0fd30 [2025-03-17 11:16:28,254 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01c3bb2de/2e08e4f60ad941818a9a66da92c15efb [2025-03-17 11:16:28,256 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 11:16:28,257 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 11:16:28,258 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 11:16:28,258 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 11:16:28,262 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 11:16:28,262 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 11:16:28" (1/1) ... [2025-03-17 11:16:28,264 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60cd8bab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:16:28, skipping insertion in model container [2025-03-17 11:16:28,264 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 11:16:28" (1/1) ... [2025-03-17 11:16:28,292 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 11:16:28,518 WARN L639 FunctionHandler]: implicit declaration of function __sync_fetch_and_add [2025-03-17 11:16:28,535 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 11:16:28,543 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 11:16:28,573 WARN L639 FunctionHandler]: implicit declaration of function __sync_fetch_and_add [2025-03-17 11:16:28,576 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 11:16:28,609 WARN L1212 FunctionHandler]: The following functions are not defined or handled internally: __sync_fetch_and_add [2025-03-17 11:16:28,614 INFO L204 MainTranslator]: Completed translation [2025-03-17 11:16:28,615 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:16:28 WrapperNode [2025-03-17 11:16:28,615 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 11:16:28,616 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 11:16:28,616 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 11:16:28,616 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 11:16:28,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:16:28" (1/1) ... [2025-03-17 11:16:28,634 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:16:28" (1/1) ... [2025-03-17 11:16:28,652 INFO L138 Inliner]: procedures = 264, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 62 [2025-03-17 11:16:28,654 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 11:16:28,654 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 11:16:28,655 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 11:16:28,655 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 11:16:28,660 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:16:28" (1/1) ... [2025-03-17 11:16:28,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:16:28" (1/1) ... [2025-03-17 11:16:28,663 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:16:28" (1/1) ... [2025-03-17 11:16:28,667 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:16:28" (1/1) ... [2025-03-17 11:16:28,671 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:16:28" (1/1) ... [2025-03-17 11:16:28,671 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:16:28" (1/1) ... [2025-03-17 11:16:28,673 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:16:28" (1/1) ... [2025-03-17 11:16:28,673 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:16:28" (1/1) ... [2025-03-17 11:16:28,674 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 11:16:28,675 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 11:16:28,675 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 11:16:28,675 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 11:16:28,676 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:16:28" (1/1) ... [2025-03-17 11:16:28,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 11:16:28,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 11:16:28,708 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 11:16:28,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 11:16:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 11:16:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-17 11:16:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-03-17 11:16:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 11:16:28,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 11:16:28,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-17 11:16:28,726 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2025-03-17 11:16:28,726 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2025-03-17 11:16:28,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 11:16:28,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 11:16:28,726 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 11:16:28,809 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 11:16:28,810 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 11:16:28,951 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 11:16:28,952 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 11:16:28,963 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 11:16:28,964 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 11:16:28,964 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 11:16:28 BoogieIcfgContainer [2025-03-17 11:16:28,964 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 11:16:28,967 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 11:16:28,968 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 11:16:28,971 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 11:16:28,972 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 11:16:28" (1/3) ... [2025-03-17 11:16:28,972 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ceaf6c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 11:16:28, skipping insertion in model container [2025-03-17 11:16:28,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:16:28" (2/3) ... [2025-03-17 11:16:28,973 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ceaf6c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 11:16:28, skipping insertion in model container [2025-03-17 11:16:28,973 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 11:16:28" (3/3) ... [2025-03-17 11:16:28,974 INFO L128 eAbstractionObserver]: Analyzing ICFG atomic-gcc.i [2025-03-17 11:16:28,987 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 11:16:28,988 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG atomic-gcc.i that has 2 procedures, 74 locations, 1 initial locations, 3 loop locations, and 3 error locations. [2025-03-17 11:16:28,989 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 11:16:29,040 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-17 11:16:29,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 77 transitions, 161 flow [2025-03-17 11:16:29,125 INFO L124 PetriNetUnfolderBase]: 3/106 cut-off events. [2025-03-17 11:16:29,126 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 11:16:29,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 106 events. 3/106 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 158 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 52. Up to 3 conditions per place. [2025-03-17 11:16:29,131 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 77 transitions, 161 flow [2025-03-17 11:16:29,134 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 77 transitions, 161 flow [2025-03-17 11:16:29,144 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 11:16:29,152 INFO L333 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, 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;@451a5326, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 11:16:29,152 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-17 11:16:29,163 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 11:16:29,166 INFO L124 PetriNetUnfolderBase]: 1/48 cut-off events. [2025-03-17 11:16:29,166 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 11:16:29,166 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:16:29,167 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 11:16:29,167 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-17 11:16:29,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:16:29,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1146939442, now seen corresponding path program 1 times [2025-03-17 11:16:29,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:16:29,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094174108] [2025-03-17 11:16:29,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:16:29,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:16:29,257 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-17 11:16:29,293 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 11:16:29,296 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:16:29,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:16:29,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:16:29,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:16:29,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094174108] [2025-03-17 11:16:29,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094174108] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:16:29,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:16:29,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 11:16:29,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516308374] [2025-03-17 11:16:29,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:16:29,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 11:16:29,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:16:29,806 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 11:16:29,806 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-17 11:16:29,943 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 77 [2025-03-17 11:16:29,946 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 77 transitions, 161 flow. Second operand has 6 states, 6 states have (on average 55.5) internal successors, (333), 6 states have internal predecessors, (333), 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) [2025-03-17 11:16:29,946 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:16:29,946 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 77 [2025-03-17 11:16:29,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:16:29,999 INFO L124 PetriNetUnfolderBase]: 0/90 cut-off events. [2025-03-17 11:16:30,000 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 11:16:30,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 90 events. 0/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 112 event pairs, 0 based on Foata normal form. 16/99 useless extension candidates. Maximal degree in co-relation 0. Up to 20 conditions per place. [2025-03-17 11:16:30,001 INFO L140 encePairwiseOnDemand]: 68/77 looper letters, 13 selfloop transitions, 5 changer transitions 1/62 dead transitions. [2025-03-17 11:16:30,002 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 62 transitions, 164 flow [2025-03-17 11:16:30,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 11:16:30,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 11:16:30,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 354 transitions. [2025-03-17 11:16:30,015 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7662337662337663 [2025-03-17 11:16:30,017 INFO L175 Difference]: Start difference. First operand has 77 places, 77 transitions, 161 flow. Second operand 6 states and 354 transitions. [2025-03-17 11:16:30,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 62 transitions, 164 flow [2025-03-17 11:16:30,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 62 transitions, 164 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 11:16:30,026 INFO L231 Difference]: Finished difference. Result has 70 places, 61 transitions, 136 flow [2025-03-17 11:16:30,028 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=136, PETRI_PLACES=70, PETRI_TRANSITIONS=61} [2025-03-17 11:16:30,030 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, -7 predicate places. [2025-03-17 11:16:30,030 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 61 transitions, 136 flow [2025-03-17 11:16:30,031 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 55.5) internal successors, (333), 6 states have internal predecessors, (333), 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) [2025-03-17 11:16:30,031 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:16:30,031 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 11:16:30,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 11:16:30,031 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-17 11:16:30,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:16:30,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1953341857, now seen corresponding path program 1 times [2025-03-17 11:16:30,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:16:30,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625727019] [2025-03-17 11:16:30,032 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:16:30,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:16:30,045 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-17 11:16:30,050 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 11:16:30,050 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:16:30,050 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:16:30,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:16:30,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:16:30,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625727019] [2025-03-17 11:16:30,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625727019] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:16:30,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:16:30,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 11:16:30,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848519128] [2025-03-17 11:16:30,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:16:30,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 11:16:30,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:16:30,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 11:16:30,104 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 11:16:30,161 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 77 [2025-03-17 11:16:30,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 61 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 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) [2025-03-17 11:16:30,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:16:30,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 77 [2025-03-17 11:16:30,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:16:30,189 INFO L124 PetriNetUnfolderBase]: 0/81 cut-off events. [2025-03-17 11:16:30,190 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 11:16:30,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 81 events. 0/81 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 78 event pairs, 0 based on Foata normal form. 1/81 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2025-03-17 11:16:30,190 INFO L140 encePairwiseOnDemand]: 69/77 looper letters, 9 selfloop transitions, 2 changer transitions 5/66 dead transitions. [2025-03-17 11:16:30,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 66 transitions, 178 flow [2025-03-17 11:16:30,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 11:16:30,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 11:16:30,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 383 transitions. [2025-03-17 11:16:30,193 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.829004329004329 [2025-03-17 11:16:30,193 INFO L175 Difference]: Start difference. First operand has 70 places, 61 transitions, 136 flow. Second operand 6 states and 383 transitions. [2025-03-17 11:16:30,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 66 transitions, 178 flow [2025-03-17 11:16:30,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 66 transitions, 168 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-17 11:16:30,198 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 144 flow [2025-03-17 11:16:30,198 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=144, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2025-03-17 11:16:30,198 INFO L279 CegarLoopForPetriNet]: 77 programPoint places, -4 predicate places. [2025-03-17 11:16:30,198 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 144 flow [2025-03-17 11:16:30,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 62.4) internal successors, (312), 5 states have internal predecessors, (312), 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) [2025-03-17 11:16:30,199 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:16:30,199 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 11:16:30,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 11:16:30,199 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-17 11:16:30,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:16:30,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1450057367, now seen corresponding path program 1 times [2025-03-17 11:16:30,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:16:30,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575438365] [2025-03-17 11:16:30,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:16:30,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:16:30,208 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-17 11:16:30,215 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-17 11:16:30,215 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:16:30,215 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 11:16:30,215 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 11:16:30,219 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-17 11:16:30,225 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-17 11:16:30,227 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:16:30,227 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 11:16:30,246 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 11:16:30,247 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 11:16:30,248 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location threadErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE (4 of 5 remaining) [2025-03-17 11:16:30,249 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2025-03-17 11:16:30,249 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2025-03-17 11:16:30,249 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2025-03-17 11:16:30,249 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE (0 of 5 remaining) [2025-03-17 11:16:30,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 11:16:30,250 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-03-17 11:16:30,267 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-17 11:16:30,267 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-17 11:16:30,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 11:16:30 BasicIcfg [2025-03-17 11:16:30,271 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-17 11:16:30,272 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 11:16:30,272 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 11:16:30,272 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 11:16:30,273 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 11:16:28" (3/4) ... [2025-03-17 11:16:30,274 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-17 11:16:30,274 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 11:16:30,275 INFO L158 Benchmark]: Toolchain (without parser) took 2017.83ms. Allocated memory is still 142.6MB. Free memory was 109.7MB in the beginning and 69.7MB in the end (delta: 39.9MB). Peak memory consumption was 45.7MB. Max. memory is 16.1GB. [2025-03-17 11:16:30,275 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 201.3MB. Free memory is still 123.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 11:16:30,275 INFO L158 Benchmark]: CACSL2BoogieTranslator took 357.37ms. Allocated memory is still 142.6MB. Free memory was 109.2MB in the beginning and 82.2MB in the end (delta: 26.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2025-03-17 11:16:30,276 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.14ms. Allocated memory is still 142.6MB. Free memory was 82.2MB in the beginning and 80.2MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 11:16:30,276 INFO L158 Benchmark]: Boogie Preprocessor took 20.11ms. Allocated memory is still 142.6MB. Free memory was 80.2MB in the beginning and 79.3MB in the end (delta: 987.4kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 11:16:30,276 INFO L158 Benchmark]: IcfgBuilder took 288.95ms. Allocated memory is still 142.6MB. Free memory was 79.3MB in the beginning and 64.0MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 11:16:30,276 INFO L158 Benchmark]: TraceAbstraction took 1304.06ms. Allocated memory is still 142.6MB. Free memory was 63.5MB in the beginning and 69.7MB in the end (delta: -6.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 11:16:30,276 INFO L158 Benchmark]: Witness Printer took 2.58ms. Allocated memory is still 142.6MB. Free memory was 69.7MB in the beginning and 69.7MB in the end (delta: 24.1kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 11:16:30,277 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 201.3MB. Free memory is still 123.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 357.37ms. Allocated memory is still 142.6MB. Free memory was 109.2MB in the beginning and 82.2MB in the end (delta: 26.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.14ms. Allocated memory is still 142.6MB. Free memory was 82.2MB in the beginning and 80.2MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.11ms. Allocated memory is still 142.6MB. Free memory was 80.2MB in the beginning and 79.3MB in the end (delta: 987.4kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 288.95ms. Allocated memory is still 142.6MB. Free memory was 79.3MB in the beginning and 64.0MB in the end (delta: 15.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1304.06ms. Allocated memory is still 142.6MB. Free memory was 63.5MB in the beginning and 69.7MB in the end (delta: -6.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.58ms. Allocated memory is still 142.6MB. Free memory was 69.7MB in the beginning and 69.7MB in the end (delta: 24.1kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1021]: Unable to prove that there are no unsupported features in the program Unable to prove that there are no unsupported features in the program Reason: overapproximation of undefined function __sync_fetch_and_add at line 1021. Possible FailurePath: [L1019] 0 int data; VAL [data={1:0}] [L1025] 0 int threads_total = __VERIFIER_nondet_int(); VAL [data={1:0}, threads_total=2] [L1026] CALL 0 assume_abort_if_not(threads_total >= 0) [L1016] COND FALSE 0 !(!cond) VAL [\old(cond)=1, cond=1, data={1:0}] [L1026] RET 0 assume_abort_if_not(threads_total >= 0) [L1027] 0 pthread_t *tids = malloc(threads_total * sizeof(pthread_t)); VAL [data={1:0}, threads_total=2, tids={-2:0}] [L1028] 0 int i = 0; VAL [data={1:0}, i=0, threads_total=2, tids={-2:0}] [L1028] COND TRUE 0 i < threads_total VAL [data={1:0}] [L1029] 0 pthread_create(&tids[i], ((void *)0), &thread, ((void *)0)) VAL [data={1:0}, i=0, threads_total=2, tids={-2:0}] [L1029] FCALL, FORK 0 pthread_create(&tids[i], ((void *)0), &thread, ((void *)0)) VAL [data={1:0}, i=0, threads_total=2, tids={-2:0}] [L1021] CALL 1 __sync_fetch_and_add(&data, 1) - UnprovableResult [Line: 1029]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 87 locations, 91 edges, 5 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: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 154 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 104 mSDsluCounter, 32 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 28 mSDsCounter, 8 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 195 IncrementalHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 8 mSolverCounterUnsat, 4 mSDtfsCounter, 195 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=161occurred in iteration=0, InterpolantAutomatonStates: 12, 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, 0.5s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 187 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, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-03-17 11:16:30,289 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-race-challenges/atomic-gcc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e871b2733ca48641b94165aca85ae57dbaeb869d27034829a9a99745860b5f9f --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 11:16:32,217 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 11:16:32,284 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Bitvector.epf [2025-03-17 11:16:32,288 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 11:16:32,291 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 11:16:32,306 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 11:16:32,307 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 11:16:32,307 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 11:16:32,307 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 11:16:32,307 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 11:16:32,307 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 11:16:32,307 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 11:16:32,307 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 11:16:32,307 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 11:16:32,307 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 11:16:32,307 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 11:16:32,307 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 11:16:32,307 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 11:16:32,308 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 11:16:32,308 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 11:16:32,308 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 11:16:32,308 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-03-17 11:16:32,308 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2025-03-17 11:16:32,308 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2025-03-17 11:16:32,308 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 11:16:32,308 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 11:16:32,308 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 11:16:32,308 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 11:16:32,308 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 11:16:32,308 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 11:16:32,308 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 11:16:32,308 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 11:16:32,308 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 11:16:32,309 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 11:16:32,309 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 11:16:32,309 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 11:16:32,309 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 11:16:32,311 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2025-03-17 11:16:32,312 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2025-03-17 11:16:32,312 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 11:16:32,312 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 11:16:32,312 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 11:16:32,312 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 11:16:32,312 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e871b2733ca48641b94165aca85ae57dbaeb869d27034829a9a99745860b5f9f [2025-03-17 11:16:32,552 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 11:16:32,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 11:16:32,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 11:16:32,563 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 11:16:32,563 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 11:16:32,564 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-race-challenges/atomic-gcc.i [2025-03-17 11:16:33,771 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c968bc2c9/dfc0a18ef89a4dd4b628a3df3c9942ca/FLAG5528b37bc [2025-03-17 11:16:34,071 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 11:16:34,072 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-race-challenges/atomic-gcc.i [2025-03-17 11:16:34,088 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c968bc2c9/dfc0a18ef89a4dd4b628a3df3c9942ca/FLAG5528b37bc [2025-03-17 11:16:34,097 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c968bc2c9/dfc0a18ef89a4dd4b628a3df3c9942ca [2025-03-17 11:16:34,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 11:16:34,100 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 11:16:34,101 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 11:16:34,101 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 11:16:34,104 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 11:16:34,105 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 11:16:34" (1/1) ... [2025-03-17 11:16:34,105 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@604c0198 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:16:34, skipping insertion in model container [2025-03-17 11:16:34,105 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 11:16:34" (1/1) ... [2025-03-17 11:16:34,129 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 11:16:34,362 WARN L639 FunctionHandler]: implicit declaration of function __sync_fetch_and_add [2025-03-17 11:16:34,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 11:16:34,386 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 11:16:34,418 WARN L639 FunctionHandler]: implicit declaration of function __sync_fetch_and_add [2025-03-17 11:16:34,423 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 11:16:34,462 WARN L1212 FunctionHandler]: The following functions are not defined or handled internally: __sync_fetch_and_add [2025-03-17 11:16:34,468 INFO L204 MainTranslator]: Completed translation [2025-03-17 11:16:34,468 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:16:34 WrapperNode [2025-03-17 11:16:34,468 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 11:16:34,469 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 11:16:34,469 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 11:16:34,469 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 11:16:34,474 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:16:34" (1/1) ... [2025-03-17 11:16:34,488 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:16:34" (1/1) ... [2025-03-17 11:16:34,509 INFO L138 Inliner]: procedures = 265, calls = 11, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2025-03-17 11:16:34,510 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 11:16:34,511 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 11:16:34,511 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 11:16:34,511 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 11:16:34,517 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:16:34" (1/1) ... [2025-03-17 11:16:34,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:16:34" (1/1) ... [2025-03-17 11:16:34,519 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:16:34" (1/1) ... [2025-03-17 11:16:34,520 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:16:34" (1/1) ... [2025-03-17 11:16:34,526 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:16:34" (1/1) ... [2025-03-17 11:16:34,527 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:16:34" (1/1) ... [2025-03-17 11:16:34,528 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:16:34" (1/1) ... [2025-03-17 11:16:34,529 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:16:34" (1/1) ... [2025-03-17 11:16:34,531 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 11:16:34,531 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 11:16:34,535 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 11:16:34,536 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 11:16:34,536 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:16:34" (1/1) ... [2025-03-17 11:16:34,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 11:16:34,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 11:16:34,567 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 11:16:34,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 11:16:34,589 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2025-03-17 11:16:34,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 11:16:34,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2025-03-17 11:16:34,590 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2025-03-17 11:16:34,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-03-17 11:16:34,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 11:16:34,590 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2025-03-17 11:16:34,590 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2025-03-17 11:16:34,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 11:16:34,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 11:16:34,591 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 11:16:34,690 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 11:16:34,691 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 11:16:34,909 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 11:16:34,910 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 11:16:34,916 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 11:16:34,916 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 11:16:34,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 11:16:34 BoogieIcfgContainer [2025-03-17 11:16:34,917 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 11:16:34,919 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 11:16:34,920 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 11:16:34,923 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 11:16:34,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 11:16:34" (1/3) ... [2025-03-17 11:16:34,924 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b22d4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 11:16:34, skipping insertion in model container [2025-03-17 11:16:34,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:16:34" (2/3) ... [2025-03-17 11:16:34,925 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b22d4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 11:16:34, skipping insertion in model container [2025-03-17 11:16:34,925 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 11:16:34" (3/3) ... [2025-03-17 11:16:34,926 INFO L128 eAbstractionObserver]: Analyzing ICFG atomic-gcc.i [2025-03-17 11:16:34,938 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 11:16:34,940 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG atomic-gcc.i that has 2 procedures, 73 locations, 1 initial locations, 3 loop locations, and 3 error locations. [2025-03-17 11:16:34,940 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 11:16:34,984 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-17 11:16:35,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 76 transitions, 159 flow [2025-03-17 11:16:35,068 INFO L124 PetriNetUnfolderBase]: 3/105 cut-off events. [2025-03-17 11:16:35,070 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 11:16:35,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 105 events. 3/105 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 152 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 52. Up to 3 conditions per place. [2025-03-17 11:16:35,075 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 76 transitions, 159 flow [2025-03-17 11:16:35,077 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 76 places, 76 transitions, 159 flow [2025-03-17 11:16:35,083 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 11:16:35,091 INFO L333 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, 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;@128a0f86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 11:16:35,091 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2025-03-17 11:16:35,107 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 11:16:35,107 INFO L124 PetriNetUnfolderBase]: 1/48 cut-off events. [2025-03-17 11:16:35,107 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 11:16:35,107 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:16:35,108 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 11:16:35,108 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-17 11:16:35,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:16:35,114 INFO L85 PathProgramCache]: Analyzing trace with hash 283252234, now seen corresponding path program 1 times [2025-03-17 11:16:35,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 11:16:35,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [556902790] [2025-03-17 11:16:35,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:16:35,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 11:16:35,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 11:16:35,127 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 11:16:35,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 11:16:35,202 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-17 11:16:35,216 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 11:16:35,216 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:16:35,216 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:16:35,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-03-17 11:16:35,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 11:16:35,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2025-03-17 11:16:35,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2025-03-17 11:16:35,536 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 11:16:35,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 38 [2025-03-17 11:16:35,606 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-17 11:16:35,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 52 [2025-03-17 11:16:35,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:16:35,655 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 11:16:35,655 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 11:16:35,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556902790] [2025-03-17 11:16:35,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556902790] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:16:35,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:16:35,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2025-03-17 11:16:35,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437395110] [2025-03-17 11:16:35,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:16:35,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 11:16:35,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 11:16:35,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 11:16:35,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2025-03-17 11:16:35,947 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 76 [2025-03-17 11:16:35,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 76 transitions, 159 flow. Second operand has 11 states, 11 states have (on average 46.54545454545455) internal successors, (512), 11 states have internal predecessors, (512), 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) [2025-03-17 11:16:35,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:16:35,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 76 [2025-03-17 11:16:35,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:16:36,050 INFO L124 PetriNetUnfolderBase]: 0/91 cut-off events. [2025-03-17 11:16:36,050 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 11:16:36,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 91 events. 0/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 17/101 useless extension candidates. Maximal degree in co-relation 0. Up to 19 conditions per place. [2025-03-17 11:16:36,051 INFO L140 encePairwiseOnDemand]: 56/76 looper letters, 17 selfloop transitions, 16 changer transitions 1/70 dead transitions. [2025-03-17 11:16:36,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 70 transitions, 212 flow [2025-03-17 11:16:36,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 11:16:36,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 11:16:36,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 584 transitions. [2025-03-17 11:16:36,063 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6403508771929824 [2025-03-17 11:16:36,065 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 159 flow. Second operand 12 states and 584 transitions. [2025-03-17 11:16:36,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 70 transitions, 212 flow [2025-03-17 11:16:36,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 70 transitions, 212 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 11:16:36,074 INFO L231 Difference]: Finished difference. Result has 82 places, 67 transitions, 195 flow [2025-03-17 11:16:36,077 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=195, PETRI_PLACES=82, PETRI_TRANSITIONS=67} [2025-03-17 11:16:36,080 INFO L279 CegarLoopForPetriNet]: 76 programPoint places, 6 predicate places. [2025-03-17 11:16:36,082 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 67 transitions, 195 flow [2025-03-17 11:16:36,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 46.54545454545455) internal successors, (512), 11 states have internal predecessors, (512), 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) [2025-03-17 11:16:36,082 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:16:36,082 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 11:16:36,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 11:16:36,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 11:16:36,283 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-17 11:16:36,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:16:36,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1898971422, now seen corresponding path program 1 times [2025-03-17 11:16:36,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 11:16:36,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2118171586] [2025-03-17 11:16:36,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:16:36,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 11:16:36,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 11:16:36,286 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 11:16:36,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 11:16:36,333 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-03-17 11:16:36,341 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-03-17 11:16:36,341 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:16:36,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:16:36,342 INFO L256 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-17 11:16:36,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 11:16:36,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:16:36,372 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 11:16:36,372 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2025-03-17 11:16:36,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118171586] [2025-03-17 11:16:36,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118171586] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:16:36,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:16:36,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 11:16:36,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376222161] [2025-03-17 11:16:36,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:16:36,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 11:16:36,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2025-03-17 11:16:36,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 11:16:36,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 11:16:36,480 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 76 [2025-03-17 11:16:36,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 67 transitions, 195 flow. Second operand has 5 states, 5 states have (on average 61.4) internal successors, (307), 5 states have internal predecessors, (307), 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) [2025-03-17 11:16:36,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:16:36,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 76 [2025-03-17 11:16:36,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:16:36,516 INFO L124 PetriNetUnfolderBase]: 0/82 cut-off events. [2025-03-17 11:16:36,516 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-17 11:16:36,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 82 events. 0/82 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 1/82 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2025-03-17 11:16:36,519 INFO L140 encePairwiseOnDemand]: 68/76 looper letters, 9 selfloop transitions, 2 changer transitions 5/71 dead transitions. [2025-03-17 11:16:36,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 71 transitions, 237 flow [2025-03-17 11:16:36,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 11:16:36,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 11:16:36,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 377 transitions. [2025-03-17 11:16:36,521 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8267543859649122 [2025-03-17 11:16:36,521 INFO L175 Difference]: Start difference. First operand has 82 places, 67 transitions, 195 flow. Second operand 6 states and 377 transitions. [2025-03-17 11:16:36,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 71 transitions, 237 flow [2025-03-17 11:16:36,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 71 transitions, 214 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-03-17 11:16:36,525 INFO L231 Difference]: Finished difference. Result has 82 places, 66 transitions, 186 flow [2025-03-17 11:16:36,526 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=186, PETRI_PLACES=82, PETRI_TRANSITIONS=66} [2025-03-17 11:16:36,526 INFO L279 CegarLoopForPetriNet]: 76 programPoint places, 6 predicate places. [2025-03-17 11:16:36,526 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 66 transitions, 186 flow [2025-03-17 11:16:36,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.4) internal successors, (307), 5 states have internal predecessors, (307), 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) [2025-03-17 11:16:36,526 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:16:36,527 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 11:16:36,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 11:16:36,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 11:16:36,727 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE === [ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2025-03-17 11:16:36,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:16:36,728 INFO L85 PathProgramCache]: Analyzing trace with hash -813129540, now seen corresponding path program 1 times [2025-03-17 11:16:36,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2025-03-17 11:16:36,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1926933190] [2025-03-17 11:16:36,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:16:36,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 11:16:36,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 11:16:36,730 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 11:16:36,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 11:16:36,780 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-17 11:16:36,790 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-17 11:16:36,791 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:16:36,791 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 11:16:36,791 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 11:16:36,800 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 36 statements into 1 equivalence classes. [2025-03-17 11:16:36,809 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 36 of 36 statements. [2025-03-17 11:16:36,809 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:16:36,809 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 11:16:36,829 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2025-03-17 11:16:36,829 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 11:16:36,830 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location threadErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE (4 of 5 remaining) [2025-03-17 11:16:36,831 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (3 of 5 remaining) [2025-03-17 11:16:36,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (2 of 5 remaining) [2025-03-17 11:16:36,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2025-03-17 11:16:36,832 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONUNSUPPORTED_FEATURE (0 of 5 remaining) [2025-03-17 11:16:36,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 11:16:37,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 11:16:37,033 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-03-17 11:16:37,055 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-17 11:16:37,055 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-17 11:16:37,059 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 11:16:37 BasicIcfg [2025-03-17 11:16:37,059 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-17 11:16:37,059 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 11:16:37,059 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 11:16:37,060 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 11:16:37,060 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 11:16:34" (3/4) ... [2025-03-17 11:16:37,061 INFO L149 WitnessPrinter]: No result that supports witness generation found [2025-03-17 11:16:37,062 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 11:16:37,062 INFO L158 Benchmark]: Toolchain (without parser) took 2962.34ms. Allocated memory is still 109.1MB. Free memory was 82.3MB in the beginning and 37.8MB in the end (delta: 44.4MB). Peak memory consumption was 48.8MB. Max. memory is 16.1GB. [2025-03-17 11:16:37,063 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 83.9MB. Free memory is still 61.6MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 11:16:37,063 INFO L158 Benchmark]: CACSL2BoogieTranslator took 367.42ms. Allocated memory is still 109.1MB. Free memory was 82.3MB in the beginning and 54.0MB in the end (delta: 28.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-17 11:16:37,063 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.04ms. Allocated memory is still 109.1MB. Free memory was 54.0MB in the beginning and 51.8MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 11:16:37,063 INFO L158 Benchmark]: Boogie Preprocessor took 20.03ms. Allocated memory is still 109.1MB. Free memory was 51.8MB in the beginning and 50.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 11:16:37,063 INFO L158 Benchmark]: IcfgBuilder took 385.68ms. Allocated memory is still 109.1MB. Free memory was 50.3MB in the beginning and 80.1MB in the end (delta: -29.8MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. [2025-03-17 11:16:37,063 INFO L158 Benchmark]: TraceAbstraction took 2140.11ms. Allocated memory is still 109.1MB. Free memory was 79.4MB in the beginning and 37.8MB in the end (delta: 41.6MB). Peak memory consumption was 44.1MB. Max. memory is 16.1GB. [2025-03-17 11:16:37,063 INFO L158 Benchmark]: Witness Printer took 2.60ms. Allocated memory is still 109.1MB. Free memory was 37.8MB in the beginning and 37.8MB in the end (delta: 7.0kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 11:16:37,064 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 83.9MB. Free memory is still 61.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 367.42ms. Allocated memory is still 109.1MB. Free memory was 82.3MB in the beginning and 54.0MB in the end (delta: 28.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 41.04ms. Allocated memory is still 109.1MB. Free memory was 54.0MB in the beginning and 51.8MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.03ms. Allocated memory is still 109.1MB. Free memory was 51.8MB in the beginning and 50.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 385.68ms. Allocated memory is still 109.1MB. Free memory was 50.3MB in the beginning and 80.1MB in the end (delta: -29.8MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2140.11ms. Allocated memory is still 109.1MB. Free memory was 79.4MB in the beginning and 37.8MB in the end (delta: 41.6MB). Peak memory consumption was 44.1MB. Max. memory is 16.1GB. * Witness Printer took 2.60ms. Allocated memory is still 109.1MB. Free memory was 37.8MB in the beginning and 37.8MB in the end (delta: 7.0kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1021]: Unable to prove that there are no unsupported features in the program Unable to prove that there are no unsupported features in the program Reason: overapproximation of undefined function __sync_fetch_and_add at line 1021. Possible FailurePath: [L1019] 0 int data; VAL [data={1:0}] [L1025] 0 int threads_total = __VERIFIER_nondet_int(); VAL [data={1:0}, threads_total=1073741824] [L1026] CALL 0 assume_abort_if_not(threads_total >= 0) [L1016] COND FALSE 0 !(!cond) VAL [\old(cond)=1, cond=1, data={1:0}] [L1026] RET 0 assume_abort_if_not(threads_total >= 0) [L1027] 0 pthread_t *tids = malloc(threads_total * sizeof(pthread_t)); VAL [data={1:0}, threads_total=1073741824, tids={2:0}] [L1028] 0 int i = 0; VAL [data={1:0}, i=0, threads_total=1073741824, tids={2:0}] [L1028] COND TRUE 0 i < threads_total VAL [data={1:0}] [L1029] 0 pthread_create(&tids[i], ((void *)0), &thread, ((void *)0)) VAL [data={1:0}, i=0, threads_total=1073741824, tids={2:0}] [L1029] FCALL, FORK 0 pthread_create(&tids[i], ((void *)0), &thread, ((void *)0)) VAL [data={1:0}, i=0, threads_total=1073741824, tids={2:0}] [L1021] CALL 1 __sync_fetch_and_add(&data, 1) - UnprovableResult [Line: 1029]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1032]: Unable to prove that there are no data races Unable to prove that there are no data races Reason: Not analyzed. - UnprovableResult [Line: 1029]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 85 locations, 89 edges, 5 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: 2.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 265 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 200 mSDsluCounter, 263 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 245 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 432 IncrementalHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 18 mSDtfsCounter, 432 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=195occurred in iteration=1, InterpolantAutomatonStates: 18, 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, 0.5s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 249 SizeOfPredicates, 5 NumberOfNonLiveVariables, 104 ConjunctsInSsa, 22 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, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2025-03-17 11:16:37,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample