./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/stateful01-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 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/stateful01-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4f746010868b331b940ee2293ff3d78b9aa516b26fde95d84f76493b23741d03 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 02:01:32,032 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 02:01:32,081 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-04 02:01:32,088 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 02:01:32,089 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 02:01:32,118 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 02:01:32,119 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 02:01:32,119 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 02:01:32,120 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 02:01:32,120 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 02:01:32,120 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 02:01:32,120 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 02:01:32,121 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 02:01:32,121 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 02:01:32,121 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 02:01:32,121 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 02:01:32,122 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 02:01:32,122 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 02:01:32,122 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 02:01:32,122 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 02:01:32,122 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 02:01:32,122 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 02:01:32,122 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 02:01:32,123 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 02:01:32,123 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 02:01:32,123 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 02:01:32,123 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 02:01:32,123 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 02:01:32,123 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 02:01:32,123 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 02:01:32,123 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 02:01:32,123 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 02:01:32,123 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 02:01:32,123 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 02:01:32,123 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 02:01:32,123 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 02:01:32,123 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 02:01:32,124 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 02:01:32,124 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 02:01:32,124 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 02:01:32,124 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 02:01:32,124 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 02:01:32,124 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 02:01:32,124 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 ! call(reach_error())) ) 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 -> 4f746010868b331b940ee2293ff3d78b9aa516b26fde95d84f76493b23741d03 [2025-03-04 02:01:32,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 02:01:32,359 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 02:01:32,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 02:01:32,363 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 02:01:32,363 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 02:01:32,364 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/stateful01-1.i [2025-03-04 02:01:33,572 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea800667b/404c4d8aa2e345918e393eae67354f66/FLAGc70dc021e [2025-03-04 02:01:33,809 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 02:01:33,809 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stateful01-1.i [2025-03-04 02:01:33,818 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea800667b/404c4d8aa2e345918e393eae67354f66/FLAGc70dc021e [2025-03-04 02:01:33,828 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea800667b/404c4d8aa2e345918e393eae67354f66 [2025-03-04 02:01:33,830 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 02:01:33,831 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 02:01:33,832 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 02:01:33,832 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 02:01:33,835 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 02:01:33,836 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:01:33" (1/1) ... [2025-03-04 02:01:33,836 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ba96874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:01:33, skipping insertion in model container [2025-03-04 02:01:33,836 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 02:01:33" (1/1) ... [2025-03-04 02:01:33,858 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 02:01:34,062 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stateful01-1.i[30826,30839] [2025-03-04 02:01:34,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 02:01:34,083 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 02:01:34,129 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/stateful01-1.i[30826,30839] [2025-03-04 02:01:34,130 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 02:01:34,158 INFO L204 MainTranslator]: Completed translation [2025-03-04 02:01:34,158 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:01:34 WrapperNode [2025-03-04 02:01:34,159 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 02:01:34,159 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 02:01:34,159 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 02:01:34,159 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 02:01:34,163 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:01:34" (1/1) ... [2025-03-04 02:01:34,170 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:01:34" (1/1) ... [2025-03-04 02:01:34,181 INFO L138 Inliner]: procedures = 168, calls = 28, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 50 [2025-03-04 02:01:34,181 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 02:01:34,182 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 02:01:34,182 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 02:01:34,182 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 02:01:34,187 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:01:34" (1/1) ... [2025-03-04 02:01:34,187 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:01:34" (1/1) ... [2025-03-04 02:01:34,189 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:01:34" (1/1) ... [2025-03-04 02:01:34,197 INFO L175 MemorySlicer]: Split 12 memory accesses to 3 slices as follows [2, 5, 5]. 42 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5]. The 0 writes are split as follows [0, 0, 0]. [2025-03-04 02:01:34,197 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:01:34" (1/1) ... [2025-03-04 02:01:34,197 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:01:34" (1/1) ... [2025-03-04 02:01:34,202 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:01:34" (1/1) ... [2025-03-04 02:01:34,202 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:01:34" (1/1) ... [2025-03-04 02:01:34,203 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:01:34" (1/1) ... [2025-03-04 02:01:34,203 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:01:34" (1/1) ... [2025-03-04 02:01:34,209 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 02:01:34,209 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 02:01:34,209 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 02:01:34,209 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 02:01:34,210 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:01:34" (1/1) ... [2025-03-04 02:01:34,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 02:01:34,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 02:01:34,233 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) [2025-03-04 02:01:34,238 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 [2025-03-04 02:01:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-04 02:01:34,250 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-04 02:01:34,250 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-04 02:01:34,250 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-04 02:01:34,251 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-04 02:01:34,251 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 02:01:34,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 02:01:34,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 02:01:34,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-04 02:01:34,251 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-04 02:01:34,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 02:01:34,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 02:01:34,252 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 02:01:34,334 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 02:01:34,335 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 02:01:34,454 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 02:01:34,454 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 02:01:34,550 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 02:01:34,551 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 02:01:34,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:01:34 BoogieIcfgContainer [2025-03-04 02:01:34,552 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 02:01:34,554 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 02:01:34,554 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 02:01:34,558 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 02:01:34,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 02:01:33" (1/3) ... [2025-03-04 02:01:34,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c6c1ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:01:34, skipping insertion in model container [2025-03-04 02:01:34,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 02:01:34" (2/3) ... [2025-03-04 02:01:34,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31c6c1ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 02:01:34, skipping insertion in model container [2025-03-04 02:01:34,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:01:34" (3/3) ... [2025-03-04 02:01:34,560 INFO L128 eAbstractionObserver]: Analyzing ICFG stateful01-1.i [2025-03-04 02:01:34,570 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 02:01:34,571 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG stateful01-1.i that has 3 procedures, 32 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-03-04 02:01:34,571 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 02:01:34,607 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-04 02:01:34,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 32 transitions, 78 flow [2025-03-04 02:01:34,662 INFO L124 PetriNetUnfolderBase]: 1/30 cut-off events. [2025-03-04 02:01:34,665 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-04 02:01:34,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 1/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 16. Up to 2 conditions per place. [2025-03-04 02:01:34,669 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 32 transitions, 78 flow [2025-03-04 02:01:34,672 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 27 transitions, 66 flow [2025-03-04 02:01:34,677 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 02:01:34,685 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;@588e04e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 02:01:34,686 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2025-03-04 02:01:34,695 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 02:01:34,696 INFO L124 PetriNetUnfolderBase]: 0/26 cut-off events. [2025-03-04 02:01:34,696 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-04 02:01:34,696 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 02:01:34,696 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] [2025-03-04 02:01:34,697 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-03-04 02:01:34,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 02:01:34,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1685869250, now seen corresponding path program 1 times [2025-03-04 02:01:34,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 02:01:34,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258740106] [2025-03-04 02:01:34,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 02:01:34,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 02:01:34,778 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-04 02:01:34,834 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-04 02:01:34,834 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:01:34,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 02:01:34,834 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 02:01:34,846 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-04 02:01:34,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-04 02:01:34,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 02:01:34,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 02:01:34,901 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-04 02:01:34,903 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 02:01:34,904 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2025-03-04 02:01:34,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2025-03-04 02:01:34,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2025-03-04 02:01:34,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 02:01:34,907 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-04 02:01:34,949 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-04 02:01:34,950 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 02:01:34,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 02:01:34 BasicIcfg [2025-03-04 02:01:34,954 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 02:01:34,954 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 02:01:34,954 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 02:01:34,954 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 02:01:34,955 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 02:01:34" (3/4) ... [2025-03-04 02:01:34,955 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2025-03-04 02:01:35,002 INFO L127 tionWitnessGenerator]: Generated YAML witness of length 2. [2025-03-04 02:01:35,033 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-04 02:01:35,033 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-04 02:01:35,033 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 02:01:35,035 INFO L158 Benchmark]: Toolchain (without parser) took 1203.69ms. Allocated memory is still 167.8MB. Free memory was 121.8MB in the beginning and 33.0MB in the end (delta: 88.7MB). Peak memory consumption was 83.9MB. Max. memory is 16.1GB. [2025-03-04 02:01:35,036 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 119.9MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 02:01:35,037 INFO L158 Benchmark]: CACSL2BoogieTranslator took 326.46ms. Allocated memory is still 167.8MB. Free memory was 121.8MB in the beginning and 101.6MB in the end (delta: 20.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 02:01:35,037 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.03ms. Allocated memory is still 167.8MB. Free memory was 101.6MB in the beginning and 100.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 02:01:35,038 INFO L158 Benchmark]: Boogie Preprocessor took 27.05ms. Allocated memory is still 167.8MB. Free memory was 100.1MB in the beginning and 98.3MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 02:01:35,039 INFO L158 Benchmark]: IcfgBuilder took 342.79ms. Allocated memory is still 167.8MB. Free memory was 98.3MB in the beginning and 70.8MB in the end (delta: 27.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-04 02:01:35,040 INFO L158 Benchmark]: TraceAbstraction took 399.93ms. Allocated memory is still 167.8MB. Free memory was 69.9MB in the beginning and 41.9MB in the end (delta: 28.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-04 02:01:35,040 INFO L158 Benchmark]: Witness Printer took 78.98ms. Allocated memory is still 167.8MB. Free memory was 41.9MB in the beginning and 33.0MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 02:01:35,042 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 119.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 326.46ms. Allocated memory is still 167.8MB. Free memory was 121.8MB in the beginning and 101.6MB in the end (delta: 20.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.03ms. Allocated memory is still 167.8MB. Free memory was 101.6MB in the beginning and 100.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.05ms. Allocated memory is still 167.8MB. Free memory was 100.1MB in the beginning and 98.3MB in the end (delta: 1.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 342.79ms. Allocated memory is still 167.8MB. Free memory was 98.3MB in the beginning and 70.8MB in the end (delta: 27.4MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 399.93ms. Allocated memory is still 167.8MB. Free memory was 69.9MB in the beginning and 41.9MB in the end (delta: 28.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 78.98ms. Allocated memory is still 167.8MB. Free memory was 41.9MB in the beginning and 33.0MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 727]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L692] 0 pthread_mutex_t ma, mb; [L692] 0 pthread_mutex_t ma, mb; [L692] 0 pthread_mutex_t ma, mb; [L692] 0 pthread_mutex_t ma, mb; [L692] 0 pthread_mutex_t ma, mb; [L692] 0 pthread_mutex_t ma, mb; [L692] 0 pthread_mutex_t ma, mb; [L692] 0 pthread_mutex_t ma, mb; [L692] 0 pthread_mutex_t ma, mb; [L692] 0 pthread_mutex_t ma, mb; [L692] 0 pthread_mutex_t ma, mb; [L692] 0 pthread_mutex_t ma, mb; [L693] 0 int data1, data2; [L716] 0 pthread_t t1, t2; [L719] 0 data1 = 10 [L720] 0 data2 = 10 [L721] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [\old(arg)={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, t1=-1] [L722] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, data1=10, data2=10, ma={3:0}, mb={4:0}, t1=-1, t2=0] [L697] 1 data1++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, data1=11, data2=10, ma={3:0}, mb={4:0}] [L700] 1 data2++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, arg={0:0}, data1=11, data2=11, ma={3:0}, mb={4:0}] [L702] 1 return 0; [L723] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, arg={0:0}, data1=11, data2=11, ma={3:0}, mb={4:0}, t1=-1, t2=0] [L707] 2 data1+=5 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=11, ma={3:0}, mb={4:0}] [L710] 2 data2-=6 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}] [L712] 2 return 0; [L724] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1=-1, t2=0] [L725] COND TRUE 0 data1==16 && data2==5 VAL [\old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1=-1, t2=0] [L727] 0 reach_error() VAL [\old(arg)={0:0}, \old(arg)={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, data1=16, data2=5, ma={3:0}, mb={4:0}, t1=-1, t2=0] - UnprovableResult [Line: 722]: 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. - UnprovableResult [Line: 721]: 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 5 procedures, 54 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=0, InterpolantAutomatonStates: 0, 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, 0.0s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 proved your program to be incorrect! [2025-03-04 02:01:35,089 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE