/root/.sdkman/candidates/java/21.0.5-tem/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata ./data -tc ../benchexec/../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.automaton.type.used.in.concurrency.analysis PETRI_NET -i ../../../trunk/examples/svcomp/ldv-races/race-1_1-join.i -------------------------------------------------------------------------------- This is Ultimate 0.3.0-wip.dk.cfg-lbe-improvements-94356ea-m [2025-04-13 19:37:55,513 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-04-13 19:37:55,591 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../benchexec/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2025-04-13 19:37:55,594 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-04-13 19:37:55,595 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-04-13 19:37:55,617 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-04-13 19:37:55,618 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-04-13 19:37:55,618 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-04-13 19:37:55,618 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-04-13 19:37:55,618 INFO L153 SettingsManager]: * Use memory slicer=true [2025-04-13 19:37:55,618 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-04-13 19:37:55,618 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-04-13 19:37:55,619 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-04-13 19:37:55,619 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-04-13 19:37:55,619 INFO L153 SettingsManager]: * Use SBE=true [2025-04-13 19:37:55,620 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-04-13 19:37:55,620 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-04-13 19:37:55,620 INFO L153 SettingsManager]: * sizeof long=4 [2025-04-13 19:37:55,620 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-04-13 19:37:55,620 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-04-13 19:37:55,620 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-04-13 19:37:55,620 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-04-13 19:37:55,620 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-04-13 19:37:55,620 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-04-13 19:37:55,620 INFO L153 SettingsManager]: * sizeof long double=12 [2025-04-13 19:37:55,620 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-04-13 19:37:55,620 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-04-13 19:37:55,620 INFO L153 SettingsManager]: * Use constant arrays=true [2025-04-13 19:37:55,620 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-04-13 19:37:55,621 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:37:55,621 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:37:55,621 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:37:55,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:37:55,621 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-04-13 19:37:55,621 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-04-13 19:37:55,621 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-04-13 19:37:55,621 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-04-13 19:37:55,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:37:55,621 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-04-13 19:37:55,621 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-04-13 19:37:55,621 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-04-13 19:37:55,621 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-04-13 19:37:55,621 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-04-13 19:37:55,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-04-13 19:37:55,622 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-04-13 19:37:55,622 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-04-13 19:37:55,622 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-04-13 19:37:55,622 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Automaton type used in concurrency analysis -> PETRI_NET [2025-04-13 19:37:55,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-04-13 19:37:55,854 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-04-13 19:37:55,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-04-13 19:37:55,856 INFO L270 PluginConnector]: Initializing CDTParser... [2025-04-13 19:37:55,858 INFO L274 PluginConnector]: CDTParser initialized [2025-04-13 19:37:55,859 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-races/race-1_1-join.i [2025-04-13 19:37:57,144 INFO L538 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebf46b77e/23a4390e9a764ee984e5722571f75ac8/FLAGffb6c8798 [2025-04-13 19:37:57,397 INFO L389 CDTParser]: Found 1 translation units. [2025-04-13 19:37:57,398 INFO L178 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_1-join.i [2025-04-13 19:37:57,414 INFO L432 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebf46b77e/23a4390e9a764ee984e5722571f75ac8/FLAGffb6c8798 [2025-04-13 19:37:58,146 INFO L440 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebf46b77e/23a4390e9a764ee984e5722571f75ac8 [2025-04-13 19:37:58,148 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-04-13 19:37:58,149 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2025-04-13 19:37:58,150 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-04-13 19:37:58,150 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-04-13 19:37:58,152 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-04-13 19:37:58,153 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:37:58" (1/1) ... [2025-04-13 19:37:58,153 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@591ad204 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:58, skipping insertion in model container [2025-04-13 19:37:58,154 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.04 07:37:58" (1/1) ... [2025-04-13 19:37:58,187 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-04-13 19:37:58,639 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_1-join.i[76068,76081] [2025-04-13 19:37:58,666 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:37:58,679 INFO L200 MainTranslator]: Completed pre-run [2025-04-13 19:37:58,746 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-races/race-1_1-join.i[76068,76081] [2025-04-13 19:37:58,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-04-13 19:37:58,823 INFO L204 MainTranslator]: Completed translation [2025-04-13 19:37:58,823 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:58 WrapperNode [2025-04-13 19:37:58,823 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-04-13 19:37:58,824 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-04-13 19:37:58,824 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-04-13 19:37:58,824 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-04-13 19:37:58,829 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:58" (1/1) ... [2025-04-13 19:37:58,847 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:58" (1/1) ... [2025-04-13 19:37:58,866 INFO L138 Inliner]: procedures = 481, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 90 [2025-04-13 19:37:58,868 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-04-13 19:37:58,869 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-04-13 19:37:58,869 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-04-13 19:37:58,869 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-04-13 19:37:58,874 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:58" (1/1) ... [2025-04-13 19:37:58,874 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:58" (1/1) ... [2025-04-13 19:37:58,877 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:58" (1/1) ... [2025-04-13 19:37:58,887 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 5, 1]. 63 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0]. The 1 writes are split as follows [0, 0, 1]. [2025-04-13 19:37:58,887 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:58" (1/1) ... [2025-04-13 19:37:58,887 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:58" (1/1) ... [2025-04-13 19:37:58,895 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:58" (1/1) ... [2025-04-13 19:37:58,896 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:58" (1/1) ... [2025-04-13 19:37:58,898 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:58" (1/1) ... [2025-04-13 19:37:58,900 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:58" (1/1) ... [2025-04-13 19:37:58,900 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:58" (1/1) ... [2025-04-13 19:37:58,907 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-04-13 19:37:58,908 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-04-13 19:37:58,908 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-04-13 19:37:58,908 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-04-13 19:37:58,911 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:58" (1/1) ... [2025-04-13 19:37:58,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-04-13 19:37:58,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-04-13 19:37:58,935 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) [2025-04-13 19:37:58,937 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 [2025-04-13 19:37:58,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-04-13 19:37:58,955 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-04-13 19:37:58,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-04-13 19:37:58,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-04-13 19:37:58,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-04-13 19:37:58,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-04-13 19:37:58,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-04-13 19:37:58,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-04-13 19:37:58,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-04-13 19:37:58,956 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-04-13 19:37:58,956 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-04-13 19:37:58,956 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-04-13 19:37:58,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-04-13 19:37:58,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-04-13 19:37:58,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-04-13 19:37:58,957 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-04-13 19:37:59,138 INFO L234 CfgBuilder]: Building ICFG [2025-04-13 19:37:59,140 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-04-13 19:37:59,270 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-04-13 19:37:59,271 INFO L289 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-04-13 19:37:59,271 INFO L294 CfgBuilder]: Performing block encoding [2025-04-13 19:37:59,407 WARN L179 LargeBlockEncoding]: Complex 2:2 sequential composition. Such compositions can cause exponential blowup and should not occur in structured programs. [2025-04-13 19:37:59,422 INFO L313 CfgBuilder]: Removed 0 assume(true) statements. [2025-04-13 19:37:59,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:37:59 BoogieIcfgContainer [2025-04-13 19:37:59,423 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-04-13 19:37:59,426 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-04-13 19:37:59,426 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-04-13 19:37:59,429 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-04-13 19:37:59,429 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.04 07:37:58" (1/3) ... [2025-04-13 19:37:59,430 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e49164d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:37:59, skipping insertion in model container [2025-04-13 19:37:59,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.04 07:37:58" (2/3) ... [2025-04-13 19:37:59,430 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e49164d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.04 07:37:59, skipping insertion in model container [2025-04-13 19:37:59,430 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.04 07:37:59" (3/3) ... [2025-04-13 19:37:59,431 INFO L128 eAbstractionObserver]: Analyzing ICFG race-1_1-join.i [2025-04-13 19:37:59,441 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-04-13 19:37:59,442 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG race-1_1-join.i that has 2 procedures, 16 locations, 17 edges, 1 initial locations, 0 loop locations, and 4 error locations. [2025-04-13 19:37:59,442 INFO L490 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-04-13 19:37:59,471 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-04-13 19:37:59,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 19 places, 18 transitions, 43 flow [2025-04-13 19:37:59,519 INFO L116 PetriNetUnfolderBase]: 1/17 cut-off events. [2025-04-13 19:37:59,520 INFO L117 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-04-13 19:37:59,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22 conditions, 17 events. 1/17 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 20 event pairs, 0 based on Foata normal form. 0/10 useless extension candidates. Maximal degree in co-relation 2. Up to 3 conditions per place. [2025-04-13 19:37:59,523 INFO L82 GeneralOperation]: Start removeDead. Operand has 19 places, 18 transitions, 43 flow [2025-04-13 19:37:59,526 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 18 places, 14 transitions, 34 flow [2025-04-13 19:37:59,533 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-04-13 19:37:59,546 INFO L340 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;@3194be2c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-04-13 19:37:59,546 INFO L341 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2025-04-13 19:37:59,547 INFO L177 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-04-13 19:37:59,547 INFO L116 PetriNetUnfolderBase]: 0/0 cut-off events. [2025-04-13 19:37:59,547 INFO L117 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-04-13 19:37:59,547 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-04-13 19:37:59,548 INFO L206 CegarLoopForPetriNet]: trace histogram [1] [2025-04-13 19:37:59,548 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2025-04-13 19:37:59,552 INFO L155 PredicateUnifier]: Initialized classic predicate unifier [2025-04-13 19:37:59,553 INFO L85 PathProgramCache]: Analyzing trace with hash 292, now seen corresponding path program 1 times [2025-04-13 19:37:59,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-04-13 19:37:59,558 INFO L324 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000900855] [2025-04-13 19:37:59,559 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-04-13 19:37:59,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-04-13 19:37:59,685 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1 statements into 1 equivalence classes. [2025-04-13 19:37:59,699 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1 of 1 statements. [2025-04-13 19:37:59,700 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-04-13 19:37:59,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-04-13 19:37:59,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-04-13 19:37:59,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-04-13 19:37:59,853 INFO L324 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000900855] [2025-04-13 19:37:59,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000900855] provided 1 perfect and 0 imperfect interpolant sequences [2025-04-13 19:37:59,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-04-13 19:37:59,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2025-04-13 19:37:59,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438951098] [2025-04-13 19:37:59,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-04-13 19:37:59,860 INFO L562 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-04-13 19:37:59,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-04-13 19:37:59,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-04-13 19:37:59,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-04-13 19:37:59,882 INFO L464 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 18 [2025-04-13 19:37:59,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 14 transitions, 34 flow. Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2025-04-13 19:37:59,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-04-13 19:37:59,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 18 [2025-04-13 19:37:59,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-04-13 19:37:59,920 INFO L116 PetriNetUnfolderBase]: 4/17 cut-off events. [2025-04-13 19:37:59,921 INFO L117 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-04-13 19:37:59,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 17 events. 4/17 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 14 event pairs, 4 based on Foata normal form. 1/18 useless extension candidates. Maximal degree in co-relation 27. Up to 17 conditions per place. [2025-04-13 19:37:59,922 INFO L140 encePairwiseOnDemand]: 13/18 looper letters, 0 selfloop transitions, 0 changer transitions 9/9 dead transitions. [2025-04-13 19:37:59,922 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 9 transitions, 40 flow [2025-04-13 19:37:59,923 INFO L140 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-04-13 19:37:59,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-04-13 19:37:59,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 17 transitions. [2025-04-13 19:37:59,933 INFO L509 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2025-04-13 19:37:59,935 INFO L175 Difference]: Start difference. First operand has 18 places, 14 transitions, 34 flow. Second operand 2 states and 17 transitions. [2025-04-13 19:37:59,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 9 transitions, 40 flow [2025-04-13 19:37:59,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 9 transitions, 36 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-04-13 19:37:59,940 INFO L231 Difference]: Finished difference. Result has 12 places, 0 transitions, 0 flow [2025-04-13 19:37:59,942 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=18, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=0, PETRI_PLACES=12, PETRI_TRANSITIONS=0} [2025-04-13 19:37:59,944 INFO L279 CegarLoopForPetriNet]: 18 programPoint places, -6 predicate places. [2025-04-13 19:37:59,944 INFO L485 AbstractCegarLoop]: Abstraction has has 12 places, 0 transitions, 0 flow [2025-04-13 19:37:59,944 INFO L486 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2025-04-13 19:37:59,946 INFO L790 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2025-04-13 19:37:59,948 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2025-04-13 19:37:59,948 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2025-04-13 19:37:59,948 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2025-04-13 19:37:59,948 INFO L790 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2025-04-13 19:37:59,948 INFO L790 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2025-04-13 19:37:59,948 WARN L466 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-04-13 19:37:59,948 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-04-13 19:37:59,953 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-04-13 19:37:59,953 INFO L171 ceAbstractionStarter]: Computing trace abstraction results [2025-04-13 19:37:59,958 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.04 07:37:59 BasicIcfg [2025-04-13 19:37:59,958 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-04-13 19:37:59,959 INFO L158 Benchmark]: Toolchain (without parser) took 1810.32ms. Allocated memory is still 155.2MB. Free memory was 106.6MB in the beginning and 45.0MB in the end (delta: 61.6MB). Peak memory consumption was 62.4MB. Max. memory is 8.0GB. [2025-04-13 19:37:59,959 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 159.4MB. Free memory is still 86.0MB. There was no memory consumed. Max. memory is 8.0GB. [2025-04-13 19:37:59,959 INFO L158 Benchmark]: CACSL2BoogieTranslator took 673.96ms. Allocated memory is still 155.2MB. Free memory was 106.6MB in the beginning and 49.5MB in the end (delta: 57.1MB). Peak memory consumption was 58.7MB. Max. memory is 8.0GB. [2025-04-13 19:37:59,960 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.17ms. Allocated memory is still 155.2MB. Free memory was 49.5MB in the beginning and 46.2MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 19:37:59,961 INFO L158 Benchmark]: Boogie Preprocessor took 38.72ms. Allocated memory is still 155.2MB. Free memory was 46.2MB in the beginning and 42.8MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2025-04-13 19:37:59,961 INFO L158 Benchmark]: RCFGBuilder took 514.89ms. Allocated memory is still 155.2MB. Free memory was 42.8MB in the beginning and 80.3MB in the end (delta: -37.4MB). Peak memory consumption was 24.6MB. Max. memory is 8.0GB. [2025-04-13 19:37:59,961 INFO L158 Benchmark]: TraceAbstraction took 532.84ms. Allocated memory is still 155.2MB. Free memory was 80.3MB in the beginning and 45.0MB in the end (delta: 35.2MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2025-04-13 19:37:59,962 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 159.4MB. Free memory is still 86.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 673.96ms. Allocated memory is still 155.2MB. Free memory was 106.6MB in the beginning and 49.5MB in the end (delta: 57.1MB). Peak memory consumption was 58.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 44.17ms. Allocated memory is still 155.2MB. Free memory was 49.5MB in the beginning and 46.2MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 38.72ms. Allocated memory is still 155.2MB. Free memory was 46.2MB in the beginning and 42.8MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 514.89ms. Allocated memory is still 155.2MB. Free memory was 42.8MB in the beginning and 80.3MB in the end (delta: -37.4MB). Peak memory consumption was 24.6MB. Max. memory is 8.0GB. * TraceAbstraction took 532.84ms. Allocated memory is still 155.2MB. Free memory was 80.3MB in the beginning and 45.0MB in the end (delta: 35.2MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1693]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 24 locations, 26 edges, 6 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: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8 IncrementalHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 0 mSDtfsCounter, 8 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 0.1s InterpolantComputationTime, 1 NumberOfCodeBlocks, 1 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-04-13 19:37:59,978 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...