./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/goblint-regression/04-mutex_54-pt_rwlock_ww.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/goblint-regression/04-mutex_54-pt_rwlock_ww.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a0d4dc1bad36ea6a944d96610a1da4f49d6f4e54f23122f87b052f14d480b584 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 12:54:09,871 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 12:54:09,951 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2025-02-06 12:54:09,960 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 12:54:09,960 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 12:54:09,985 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 12:54:09,989 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 12:54:09,989 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 12:54:09,990 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 12:54:09,990 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 12:54:09,993 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 12:54:09,994 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 12:54:09,994 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 12:54:09,994 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 12:54:09,994 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 12:54:09,994 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 12:54:09,994 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 12:54:09,994 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 12:54:09,994 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 12:54:09,994 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 12:54:09,994 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2025-02-06 12:54:09,994 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2025-02-06 12:54:09,994 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2025-02-06 12:54:09,994 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 12:54:09,995 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2025-02-06 12:54:09,995 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 12:54:09,995 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 12:54:09,995 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 12:54:09,995 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 12:54:09,995 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 12:54:09,995 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 12:54:09,995 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 12:54:09,995 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 12:54:09,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:54:09,995 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 12:54:09,995 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 12:54:09,995 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 12:54:09,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 12:54:09,995 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 12:54:09,995 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 12:54:09,995 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 12:54:09,995 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 12:54:09,995 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-jdk21/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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> a0d4dc1bad36ea6a944d96610a1da4f49d6f4e54f23122f87b052f14d480b584 [2025-02-06 12:54:10,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 12:54:10,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 12:54:10,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 12:54:10,335 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 12:54:10,336 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 12:54:10,337 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/04-mutex_54-pt_rwlock_ww.i [2025-02-06 12:54:11,582 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/12b9975e2/c7fd079154564bf4b14509eb38281d0e/FLAGe5a31c852 [2025-02-06 12:54:11,981 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 12:54:11,981 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_54-pt_rwlock_ww.i [2025-02-06 12:54:11,994 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/12b9975e2/c7fd079154564bf4b14509eb38281d0e/FLAGe5a31c852 [2025-02-06 12:54:12,161 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/12b9975e2/c7fd079154564bf4b14509eb38281d0e [2025-02-06 12:54:12,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 12:54:12,164 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 12:54:12,165 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 12:54:12,165 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 12:54:12,168 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 12:54:12,168 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:54:12" (1/1) ... [2025-02-06 12:54:12,169 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f5819b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:12, skipping insertion in model container [2025-02-06 12:54:12,169 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 12:54:12" (1/1) ... [2025-02-06 12:54:12,189 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 12:54:12,378 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:54:12,390 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 12:54:12,435 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 12:54:12,480 INFO L204 MainTranslator]: Completed translation [2025-02-06 12:54:12,481 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:12 WrapperNode [2025-02-06 12:54:12,481 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 12:54:12,482 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 12:54:12,482 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 12:54:12,482 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 12:54:12,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:12" (1/1) ... [2025-02-06 12:54:12,502 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:12" (1/1) ... [2025-02-06 12:54:12,512 INFO L138 Inliner]: procedures = 262, calls = 19, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 40 [2025-02-06 12:54:12,512 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 12:54:12,512 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 12:54:12,512 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 12:54:12,512 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 12:54:12,517 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:12" (1/1) ... [2025-02-06 12:54:12,517 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:12" (1/1) ... [2025-02-06 12:54:12,523 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:12" (1/1) ... [2025-02-06 12:54:12,532 INFO L175 MemorySlicer]: Split 11 memory accesses to 1 slices as follows [11]. 100 percent of accesses are in the largest equivalence class. The 11 initializations are split as follows [11]. The 0 writes are split as follows [0]. [2025-02-06 12:54:12,532 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:12" (1/1) ... [2025-02-06 12:54:12,533 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:12" (1/1) ... [2025-02-06 12:54:12,537 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:12" (1/1) ... [2025-02-06 12:54:12,538 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:12" (1/1) ... [2025-02-06 12:54:12,538 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:12" (1/1) ... [2025-02-06 12:54:12,539 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:12" (1/1) ... [2025-02-06 12:54:12,540 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 12:54:12,540 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 12:54:12,541 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 12:54:12,541 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 12:54:12,541 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:12" (1/1) ... [2025-02-06 12:54:12,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 12:54:12,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 12:54:12,567 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 12:54:12,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 12:54:12,585 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockWriteLock [2025-02-06 12:54:12,585 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsRwLockUnlock [2025-02-06 12:54:12,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 12:54:12,585 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-02-06 12:54:12,586 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-02-06 12:54:12,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 12:54:12,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 12:54:12,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 12:54:12,587 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 12:54:12,676 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 12:54:12,678 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 12:54:12,801 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 12:54:12,801 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 12:54:12,860 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 12:54:12,860 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 12:54:12,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:54:12 BoogieIcfgContainer [2025-02-06 12:54:12,861 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 12:54:12,862 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 12:54:12,862 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 12:54:12,865 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 12:54:12,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 12:54:12" (1/3) ... [2025-02-06 12:54:12,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b67474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:54:12, skipping insertion in model container [2025-02-06 12:54:12,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 12:54:12" (2/3) ... [2025-02-06 12:54:12,866 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b67474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 12:54:12, skipping insertion in model container [2025-02-06 12:54:12,866 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:54:12" (3/3) ... [2025-02-06 12:54:12,867 INFO L128 eAbstractionObserver]: Analyzing ICFG 04-mutex_54-pt_rwlock_ww.i [2025-02-06 12:54:12,877 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 12:54:12,882 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 04-mutex_54-pt_rwlock_ww.i that has 2 procedures, 18 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-06 12:54:12,882 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 12:54:12,921 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-02-06 12:54:12,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 21 places, 17 transitions, 41 flow [2025-02-06 12:54:12,960 INFO L124 PetriNetUnfolderBase]: 0/16 cut-off events. [2025-02-06 12:54:12,961 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 12:54:12,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21 conditions, 16 events. 0/16 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 10 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-02-06 12:54:12,963 INFO L82 GeneralOperation]: Start removeDead. Operand has 21 places, 17 transitions, 41 flow [2025-02-06 12:54:12,964 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 19 places, 15 transitions, 36 flow [2025-02-06 12:54:12,969 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 12:54:12,976 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=None, 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;@6e3c22e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 12:54:12,976 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2025-02-06 12:54:12,981 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 12:54:12,982 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2025-02-06 12:54:12,982 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 12:54:12,982 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 12:54:12,982 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 12:54:12,982 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2025-02-06 12:54:12,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 12:54:12,986 INFO L85 PathProgramCache]: Analyzing trace with hash -424026384, now seen corresponding path program 1 times [2025-02-06 12:54:12,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 12:54:12,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500430464] [2025-02-06 12:54:12,991 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 12:54:12,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 12:54:13,044 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 12:54:13,056 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 12:54:13,056 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 12:54:13,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 12:54:13,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 12:54:13,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 12:54:13,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500430464] [2025-02-06 12:54:13,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500430464] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 12:54:13,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 12:54:13,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 12:54:13,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98389428] [2025-02-06 12:54:13,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 12:54:13,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-06 12:54:13,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 12:54:13,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-06 12:54:13,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-06 12:54:13,278 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 17 [2025-02-06 12:54:13,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 15 transitions, 36 flow. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2025-02-06 12:54:13,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 12:54:13,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 17 [2025-02-06 12:54:13,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 12:54:13,320 INFO L124 PetriNetUnfolderBase]: 2/12 cut-off events. [2025-02-06 12:54:13,320 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-02-06 12:54:13,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28 conditions, 12 events. 2/12 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 13 event pairs, 0 based on Foata normal form. 7/18 useless extension candidates. Maximal degree in co-relation 19. Up to 8 conditions per place. [2025-02-06 12:54:13,325 INFO L140 encePairwiseOnDemand]: 13/17 looper letters, 0 selfloop transitions, 0 changer transitions 9/9 dead transitions. [2025-02-06 12:54:13,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 9 transitions, 37 flow [2025-02-06 12:54:13,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-06 12:54:13,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-02-06 12:54:13,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 27 transitions. [2025-02-06 12:54:13,342 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2025-02-06 12:54:13,343 INFO L175 Difference]: Start difference. First operand has 19 places, 15 transitions, 36 flow. Second operand 3 states and 27 transitions. [2025-02-06 12:54:13,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 9 transitions, 37 flow [2025-02-06 12:54:13,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 9 transitions, 36 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 12:54:13,350 INFO L231 Difference]: Finished difference. Result has 13 places, 0 transitions, 0 flow [2025-02-06 12:54:13,352 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=17, PETRI_DIFFERENCE_MINUEND_FLOW=18, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=13, PETRI_TRANSITIONS=0} [2025-02-06 12:54:13,358 INFO L279 CegarLoopForPetriNet]: 19 programPoint places, -6 predicate places. [2025-02-06 12:54:13,358 INFO L471 AbstractCegarLoop]: Abstraction has has 13 places, 0 transitions, 0 flow [2025-02-06 12:54:13,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2025-02-06 12:54:13,363 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2025-02-06 12:54:13,364 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2025-02-06 12:54:13,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 12:54:13,364 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-02-06 12:54:13,366 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-02-06 12:54:13,367 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-02-06 12:54:13,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.02 12:54:13 BasicIcfg [2025-02-06 12:54:13,370 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-02-06 12:54:13,370 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-02-06 12:54:13,371 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-02-06 12:54:13,371 INFO L274 PluginConnector]: Witness Printer initialized [2025-02-06 12:54:13,371 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 12:54:12" (3/4) ... [2025-02-06 12:54:13,372 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-02-06 12:54:13,375 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t_fun [2025-02-06 12:54:13,377 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2025-02-06 12:54:13,377 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2025-02-06 12:54:13,377 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-02-06 12:54:13,377 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-06 12:54:13,377 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-02-06 12:54:13,422 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-02-06 12:54:13,422 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2025-02-06 12:54:13,422 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-02-06 12:54:13,423 INFO L158 Benchmark]: Toolchain (without parser) took 1259.07ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 78.1MB in the end (delta: 27.4MB). Peak memory consumption was 31.4MB. Max. memory is 16.1GB. [2025-02-06 12:54:13,423 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 201.3MB. Free memory is still 128.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 12:54:13,423 INFO L158 Benchmark]: CACSL2BoogieTranslator took 316.49ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 78.6MB in the end (delta: 26.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-02-06 12:54:13,424 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.19ms. Allocated memory is still 142.6MB. Free memory was 78.6MB in the beginning and 76.5MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 12:54:13,424 INFO L158 Benchmark]: Boogie Preprocessor took 27.61ms. Allocated memory is still 142.6MB. Free memory was 76.5MB in the beginning and 75.6MB in the end (delta: 901.8kB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 12:54:13,424 INFO L158 Benchmark]: IcfgBuilder took 320.33ms. Allocated memory is still 142.6MB. Free memory was 75.6MB in the beginning and 55.3MB in the end (delta: 20.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-02-06 12:54:13,424 INFO L158 Benchmark]: TraceAbstraction took 507.82ms. Allocated memory is still 142.6MB. Free memory was 54.4MB in the beginning and 84.2MB in the end (delta: -29.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-02-06 12:54:13,424 INFO L158 Benchmark]: Witness Printer took 52.04ms. Allocated memory is still 142.6MB. Free memory was 84.2MB in the beginning and 78.1MB in the end (delta: 6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-02-06 12:54:13,425 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 201.3MB. Free memory is still 128.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 316.49ms. Allocated memory is still 142.6MB. Free memory was 105.5MB in the beginning and 78.6MB in the end (delta: 26.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.19ms. Allocated memory is still 142.6MB. Free memory was 78.6MB in the beginning and 76.5MB in the end (delta: 2.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.61ms. Allocated memory is still 142.6MB. Free memory was 76.5MB in the beginning and 75.6MB in the end (delta: 901.8kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 320.33ms. Allocated memory is still 142.6MB. Free memory was 75.6MB in the beginning and 55.3MB in the end (delta: 20.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 507.82ms. Allocated memory is still 142.6MB. Free memory was 54.4MB in the beginning and 84.2MB in the end (delta: -29.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 52.04ms. Allocated memory is still 142.6MB. Free memory was 84.2MB in the beginning and 78.1MB in the end (delta: 6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 927]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 25 locations, 2 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: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11 IncrementalHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 0 mSDtfsCounter, 11 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-02-06 12:54:13,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/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: TRUE